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+<div class="title">TerrainPatch.cpp</div> </div>
+</div><!--header-->
+<div class="contents">
+<a href="_terrain_patch_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* Project Starshatter 4.5</span></div>
+<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> Destroyer Studios LLC</span></div>
+<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> Copyright © 1997-2005. All Rights Reserved.</span></div>
+<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"></span></div>
+<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> SUBSYSTEM: Stars.exe</span></div>
+<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> FILE: TerrainPatch.cpp</span></div>
+<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> AUTHOR: John DiCamillo</span></div>
+<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"></span></div>
+<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"></span></div>
+<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> OVERVIEW</span></div>
+<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> ========</span></div>
+<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">*/</span></div>
+<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div>
+<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_mem_debug_8h.html">MemDebug.h</a>&quot;</span></div>
+<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_terrain_8h.html">Terrain.h</a>&quot;</span></div>
+<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_terrain_layer_8h.html">TerrainLayer.h</a>&quot;</span></div>
+<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_terrain_patch_8h.html">TerrainPatch.h</a>&quot;</span></div>
+<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_terrain_region_8h.html">TerrainRegion.h</a>&quot;</span></div>
+<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_sim_8h.html">Sim.h</a>&quot;</span></div>
+<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
+<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_light_8h.html">Light.h</a>&quot;</span></div>
+<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_camera_view_8h.html">CameraView.h</a>&quot;</span></div>
+<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_projector_8h.html">Projector.h</a>&quot;</span></div>
+<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_bitmap_8h.html">Bitmap.h</a>&quot;</span></div>
+<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_data_loader_8h.html">DataLoader.h</a>&quot;</span></div>
+<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_game_8h.html">Game.h</a>&quot;</span></div>
+<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_scene_8h.html">Scene.h</a>&quot;</span></div>
+<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_water_8h.html">Water.h</a>&quot;</span></div>
+<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;</div>
+<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">// +====================================================================+</span></div>
+<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div>
+<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">// #define DEBUG_DETAIL 1</span></div>
+<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;</div>
+<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">// +====================================================================+</span></div>
+<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;</div>
+<div class="line"><a name="l00036"></a><span class="lineno"><a class="code" href="_terrain_patch_8cpp.html#af956e344e4e5a3c7efc68d5534d77c64"> 36</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="_terrain_patch_8cpp.html#af956e344e4e5a3c7efc68d5534d77c64">MAX_DETAIL</a> = 4;</div>
+<div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="_terrain_patch_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b"> 37</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> = 17;</div>
+<div class="line"><a name="l00038"></a><span class="lineno"><a class="code" href="_terrain_patch_8cpp.html#a0c20caf891fa82dd0ec8d424d38fffd5"> 38</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="_terrain_apron_8cpp.html#a0c20caf891fa82dd0ec8d424d38fffd5">HALF_PATCH_SIZE</a> = 8;</div>
+<div class="line"><a name="l00039"></a><span class="lineno"><a class="code" href="_terrain_patch_8cpp.html#a6165aa48b296495536465bdbdc99b888"> 39</a></span>&#160;<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="_terrain_apron_8cpp.html#a6165aa48b296495536465bdbdc99b888">MAX_VERTS</a> = <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> * <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>;</div>
+<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
+<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> illuminating = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;</div>
+<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;</div>
+<div class="line"><a name="l00045"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#a7f9cf52398a14f07a896d89b3c4c6e09"> 45</a></span>&#160;<a class="code" href="class_terrain_patch.html#a7f9cf52398a14f07a896d89b3c4c6e09">TerrainPatch::TerrainPatch</a>(<a class="code" href="class_terrain.html">Terrain</a>* terr,<span class="keyword">const</span> <a class="code" href="class_bitmap.html">Bitmap</a>* patch, <span class="keyword">const</span> <a class="code" href="struct_rect.html">Rect</a>&amp; r,</div>
+<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="keyword">const</span> <a class="code" href="struct_point.html">Point</a>&amp; p1, <span class="keyword">const</span> <a class="code" href="struct_point.html">Point</a>&amp; p2)</div>
+<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;: ndetail(0), terrain(terr), rect(r), water(0), min_height(1e9), max_height(-1e9)</div>
+<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;{</div>
+<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <a class="code" href="class_graphic.html#a3a427eeadbeeacedc27c09a07c30769e">luminous</a> = <span class="keyword">true</span>; <span class="comment">// we will do our own lighting</span></div>
+<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <a class="code" href="class_solid.html#ab4ccd613c87cff8fde6e13b9c4e3be97">own_model</a> = <span class="keyword">false</span>; <span class="comment">// manage the model lifetimes in this derived class</span></div>
+<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;</div>
+<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <a class="code" href="class_terrain_patch.html#ad4b7de3fbba0e7fa97eb0214ea88b16c">max_detail</a> = <a class="code" href="class_terrain.html#a27ca091882e714aefb18f5cbe98b0687">Terrain::DetailLevel</a>();</div>
+<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a> = fabs(p1.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> - p2.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a>) / (<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>-1);</div>
+<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <a class="code" href="class_terrain_patch.html#a11042f0fa0c057b6cd9a8192c05c1727">mtnscale</a> = p2.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> - p1.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a>;</div>
+<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <a class="code" href="class_terrain_patch.html#a8c4c331e4f49e94ed82f87a9be3a5279">base</a> = p1.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a>;</div>
+<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <a class="code" href="class_terrain_patch.html#a2c30103b6d1f0aaa748bfa7dc62e5ad2">size</a> = p2.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> - p1.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a>;</div>
+<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div>
+<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; ZeroMemory(<a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>, <span class="keyword">sizeof</span>(<a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>));</div>
+<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;</div>
+<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a> = patch-&gt;<a class="code" href="class_bitmap.html#af98be2706939528725684068c28d2969">Width</a>();</div>
+<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;</div>
+<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a> = (p1 + p2) * 0.5;</div>
+<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> = <a class="code" href="class_terrain_patch.html#a8c4c331e4f49e94ed82f87a9be3a5279">base</a>;</div>
+<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;</div>
+<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <a class="code" href="class_graphic.html#a375d4c28b1feb40e12fb5a7cbba6a59c">radius</a> = (float) (<a class="code" href="class_terrain_patch.html#a2c30103b6d1f0aaa748bfa7dc62e5ad2">size</a> * 0.75);</div>
+<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a> = <span class="keyword">new</span>(__FILE__,__LINE__) <span class="keywordtype">float</span>[<a class="code" href="_terrain_apron_8cpp.html#a6165aa48b296495536465bdbdc99b888">MAX_VERTS</a>];</div>
+<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;</div>
+<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">float</span>* pHeight = <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>;</div>
+<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordtype">int</span> tscale = <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a36b6c8bb15c7706c3b2b3e91345e11f8">w</a> / (<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>-1);</div>
+<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordtype">int</span> i, j;</div>
+<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;</div>
+<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>; i++) {</div>
+<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordtype">int</span> ty = <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a1e37b6f8a4fb0d68ba22c8fffffab0a4">y</a> + i * tscale;</div>
+<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;</div>
+<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordflow">if</span> (ty &lt; 0)</div>
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+<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div>
+<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">if</span> (ty &gt; patch-&gt;<a class="code" href="class_bitmap.html#a2b8f07ee82c95736121aeef55a40cf6a">Height</a>()-1)</div>
+<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; ty = patch-&gt;<a class="code" href="class_bitmap.html#a2b8f07ee82c95736121aeef55a40cf6a">Height</a>()-1;</div>
+<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;</div>
+<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>; j++) {</div>
+<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordtype">int</span> tx = <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a64d1ef14e429e1816539de4c54361e55">x</a> + (PATCH_SIZE-1 - j) * tscale;</div>
+<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div>
+<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordflow">if</span> (tx &lt; 0)</div>
+<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; tx = 0;</div>
+<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div>
+<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordflow">if</span> (tx &gt; patch-&gt;<a class="code" href="class_bitmap.html#af98be2706939528725684068c28d2969">Width</a>()-1)</div>
+<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; tx = patch-&gt;<a class="code" href="class_bitmap.html#af98be2706939528725684068c28d2969">Width</a>()-1;</div>
+<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div>
+<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordtype">int</span> red = patch-&gt;<a class="code" href="class_bitmap.html#a62921f97cbeefa419e74fb0a760c8ffe">GetColor</a>(tx,ty).<a class="code" href="class_color.html#ae74d9df827e314c643c95112dea3d1d7">Red</a>();</div>
+<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordtype">float</span> alt = (float) (red * <a class="code" href="class_terrain_patch.html#a11042f0fa0c057b6cd9a8192c05c1727">mtnscale</a>);</div>
+<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;</div>
+<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">if</span> (alt &lt; <a class="code" href="class_terrain_patch.html#a538b56d9591f963f47b038a5e56ee16b">min_height</a>)</div>
+<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <a class="code" href="class_terrain_patch.html#a538b56d9591f963f47b038a5e56ee16b">min_height</a> = alt;</div>
+<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keywordflow">if</span> (alt &gt; <a class="code" href="class_terrain_patch.html#a392520e7b02ccc4d949defc471aa1247">max_height</a>)</div>
+<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <a class="code" href="class_terrain_patch.html#a392520e7b02ccc4d949defc471aa1247">max_height</a> = alt;</div>
+<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;</div>
+<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#ac8c8409fdbd90e90ada97353927958fb">WaterTexture</a>() &amp;&amp; red &lt; 2)</div>
+<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; alt = -5000.0f;</div>
+<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;</div>
+<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; *pHeight++ = alt;</div>
+<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; }</div>
+<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div>
+<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
+<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <a class="code" href="struct_material.html">Material</a>* mtl = <span class="keyword">new</span>(__FILE__,__LINE__) <a class="code" href="struct_material.html">Material</a>;</div>
+<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a7ccfd56c0310ca12545afb515e81b85f">Ka</a> = <a class="code" href="class_color_value.html">ColorValue</a>(0.5f, 0.5f, 0.5f);</div>
+<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a05b646c99f9ab5df7092109916b506a6">Kd</a> = <a class="code" href="class_color_value.html">ColorValue</a>(0.3f, 0.6f, 0.2f);</div>
+<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a03326968d7c667605aa2f70f8a551444">Ks</a> = <a class="code" href="class_color.html#ad4282315e214e01f5c2cc046c3a3d8f4">Color::Black</a>;</div>
+<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div>
+<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a1d848bfac5c7f17f91557fd23c44b101">tex_diffuse</a> = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a313d33cf9db654bcd51dd762b48d2a36">Texture</a>();</div>
+<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;</div>
+<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#ab3180edb4da02be2a4b62320071755b8">append</a>(mtl);</div>
+<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;</div>
+<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <a class="code" href="class_list.html">List&lt;TerrainLayer&gt;</a>&amp; <a class="code" href="class_terrain_region.html#ad00644ed494ad25ac834392114fd1f34">layers</a> = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a0fff6f973850a359df8bf3fd9ab7f293">GetLayers</a>();</div>
+<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; layers.<a class="code" href="class_list.html#a802e2aa9aaef248591140fa032d20d61">size</a>(); i++) {</div>
+<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <a class="code" href="class_bitmap.html">Bitmap</a>* tex0 = layers.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(i)-&gt;<a class="code" href="class_terrain_layer.html#ae5a917d563382593d18c5a17fab39e64">GetTileTexture</a>();</div>
+<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <a class="code" href="class_bitmap.html">Bitmap</a>* tex1 = 0;</div>
+<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <a class="code" href="class_bitmap.html">Bitmap</a>* texd = layers.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(i)-&gt;<a class="code" href="class_terrain_layer.html#a0a52222ae983cc2deae652f621af8b22">GetDetailTexture</a>();</div>
+<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;</div>
+<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keywordflow">if</span> (i &lt; layers.<a class="code" href="class_list.html#a802e2aa9aaef248591140fa032d20d61">size</a>()-1)</div>
+<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; tex1 = layers.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(i+1)-&gt;<a class="code" href="class_terrain_layer.html#ae5a917d563382593d18c5a17fab39e64">GetTileTexture</a>();</div>
+<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;</div>
+<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">if</span> (!texd)</div>
+<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; texd = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a402179ee1ed5f7a75a5f13d75d9c62fc">DetailTexture</a>(0);</div>
+<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;</div>
+<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; mtl = <span class="keyword">new</span>(__FILE__,__LINE__) <a class="code" href="struct_material.html">Material</a>;</div>
+<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a7ccfd56c0310ca12545afb515e81b85f">Ka</a> = <a class="code" href="class_color_value.html">ColorValue</a>(0.5f, 0.5f, 0.5f);</div>
+<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a05b646c99f9ab5df7092109916b506a6">Kd</a> = <a class="code" href="class_color_value.html">ColorValue</a>(0.3f, 0.6f, 0.2f);</div>
+<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a03326968d7c667605aa2f70f8a551444">Ks</a> = <a class="code" href="class_color.html#ad4282315e214e01f5c2cc046c3a3d8f4">Color::Black</a>;</div>
+<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;</div>
+<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordflow">if</span> ((i &amp; 1) != 0) {</div>
+<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a1d848bfac5c7f17f91557fd23c44b101">tex_diffuse</a> = tex1;</div>
+<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a626e419ce051501f1e42053556e7da0f">tex_alternate</a> = tex0;</div>
+<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; }</div>
+<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a1d848bfac5c7f17f91557fd23c44b101">tex_diffuse</a> = tex0;</div>
+<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a626e419ce051501f1e42053556e7da0f">tex_alternate</a> = tex1;</div>
+<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; }</div>
+<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;</div>
+<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a84da46b60cffcfa54aec42729a632538">tex_detail</a> = texd;</div>
+<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div>
+<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#ab3180edb4da02be2a4b62320071755b8">append</a>(mtl);</div>
+<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; }</div>
+<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;</div>
+<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt;= <a class="code" href="class_terrain_patch.html#ad4b7de3fbba0e7fa97eb0214ea88b16c">max_detail</a>; i++)</div>
+<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <a class="code" href="class_terrain_patch.html#aaf3c1b0ef327e924c300aa44de59e397">BuildDetailLevel</a>(i);</div>
+<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;</div>
+<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a> = <a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>[1];</div>
+<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;}</div>
+<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;</div>
+<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;</div>
+<div class="line"><a name="l00153"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#aca30bd31db71b18a93e3443bdf2b87c7"> 153</a></span>&#160;<a class="code" href="class_terrain_patch.html#a7f9cf52398a14f07a896d89b3c4c6e09">TerrainPatch::TerrainPatch</a>(<a class="code" href="class_terrain.html">Terrain</a>* terr,</div>
+<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="keyword">const</span> <a class="code" href="struct_rect.html">Rect</a>&amp; r, </div>
+<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="keyword">const</span> <a class="code" href="struct_point.html">Point</a>&amp; p1,</div>
+<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="keyword">const</span> <a class="code" href="struct_point.html">Point</a>&amp; p2,</div>
+<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="keywordtype">double</span> sea_level)</div>
+<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;: ndetail(0), terrain(terr), rect(r), water(0)</div>
+<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;{</div>
+<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <a class="code" href="class_graphic.html#a3a427eeadbeeacedc27c09a07c30769e">luminous</a> = <span class="keyword">true</span>; <span class="comment">// water is lit by the graphics engine</span></div>
+<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <a class="code" href="class_solid.html#ab4ccd613c87cff8fde6e13b9c4e3be97">own_model</a> = <span class="keyword">false</span>; <span class="comment">// manage the model lifetimes in this derived class</span></div>
+<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;</div>
+<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; <a class="code" href="class_terrain_patch.html#ad4b7de3fbba0e7fa97eb0214ea88b16c">max_detail</a> = <a class="code" href="class_terrain.html#a27ca091882e714aefb18f5cbe98b0687">Terrain::DetailLevel</a>();</div>
+<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; <a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a> = fabs(p1.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> - p2.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a>) / (<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>-1);</div>
+<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <a class="code" href="class_terrain_patch.html#a11042f0fa0c057b6cd9a8192c05c1727">mtnscale</a> = 0;</div>
+<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; <a class="code" href="class_terrain_patch.html#a8c4c331e4f49e94ed82f87a9be3a5279">base</a> = sea_level;</div>
+<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; <a class="code" href="class_terrain_patch.html#a2c30103b6d1f0aaa748bfa7dc62e5ad2">size</a> = p2.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> - p1.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a>;</div>
+<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;</div>
+<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; ZeroMemory(<a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>, <span class="keyword">sizeof</span>(<a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>));</div>
+<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;</div>
+<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a> = 0;</div>
+<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;</div>
+<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a> = (p1 + p2) * 0.5;</div>
+<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> = <a class="code" href="class_terrain_patch.html#a8c4c331e4f49e94ed82f87a9be3a5279">base</a>;</div>
+<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;</div>
+<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <a class="code" href="class_graphic.html#a375d4c28b1feb40e12fb5a7cbba6a59c">radius</a> = (float) (<a class="code" href="class_terrain_patch.html#a2c30103b6d1f0aaa748bfa7dc62e5ad2">size</a> * 0.75);</div>
+<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a> = <span class="keyword">new</span>(__FILE__,__LINE__) <span class="keywordtype">float</span>[<a class="code" href="_terrain_apron_8cpp.html#a6165aa48b296495536465bdbdc99b888">MAX_VERTS</a>];</div>
+<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;</div>
+<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keywordtype">float</span>* pHeight = <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>;</div>
+<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordtype">int</span> i, j;</div>
+<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;</div>
+<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>; i++) {</div>
+<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>; j++) {</div>
+<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; *pHeight++ = (float) sea_level;</div>
+<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; }</div>
+<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; }</div>
+<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;</div>
+<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <a class="code" href="struct_material.html">Material</a>* mtl = <span class="keyword">new</span>(__FILE__,__LINE__) <a class="code" href="struct_material.html">Material</a>;</div>
+<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a7ccfd56c0310ca12545afb515e81b85f">Ka</a> = <a class="code" href="class_color.html#af2dd026627915f6b0ed9763d0023b28b">Color::Gray</a>;</div>
+<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a05b646c99f9ab5df7092109916b506a6">Kd</a> = <a class="code" href="class_color.html#a85c6885383e69ed18d7c7f633c7ea110">Color::White</a>;</div>
+<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a03326968d7c667605aa2f70f8a551444">Ks</a> = <a class="code" href="class_color.html#a85c6885383e69ed18d7c7f633c7ea110">Color::White</a>;</div>
+<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a40f9d86ecf678d45c4334f5d57a6cba7">power</a> = 30.0f;</div>
+<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a0e8b3aa08dcf57340fea05bbdf05ea4a">shadow</a> = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a1d848bfac5c7f17f91557fd23c44b101">tex_diffuse</a> = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#ac8c8409fdbd90e90ada97353927958fb">WaterTexture</a>();</div>
+<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="comment">//strcpy_s(mtl-&gt;shader, &quot;WaterReflections&quot;);</span></div>
+<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#ab3180edb4da02be2a4b62320071755b8">append</a>(mtl);</div>
+<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;</div>
+<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a> = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#af0f4e75c28222a0af4b30a987f81e90c">GetWater</a>(1);</div>
+<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;</div>
+<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt;= <a class="code" href="class_terrain_patch.html#ad4b7de3fbba0e7fa97eb0214ea88b16c">max_detail</a>; i++)</div>
+<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <a class="code" href="class_terrain_patch.html#aaf3c1b0ef327e924c300aa44de59e397">BuildDetailLevel</a>(i);</div>
+<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;</div>
+<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a> = <a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>[1];</div>
+<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;}</div>
+<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;</div>
+<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;</div>
+<div class="line"><a name="l00208"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#aa503d5f7eda93eb152b2148cbb967537"> 208</a></span>&#160;<a class="code" href="class_terrain_patch.html#aa503d5f7eda93eb152b2148cbb967537">TerrainPatch::~TerrainPatch</a>()</div>
+<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160;{</div>
+<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keyword">delete</span> [] <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>;</div>
+<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;</div>
+<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="class_terrain_patch.html#a09c70ef1805bbe5cc84a5c270e4f7f3aa295231f7ca35a80450a1c71a51841e9e">MAX_LOD</a>; i++) {</div>
+<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <a class="code" href="class_model.html">Model</a>* m = <a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>[i];</div>
+<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;</div>
+<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordflow">if</span> (m) {</div>
+<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; m-&gt;<a class="code" href="class_model.html#a33fd31e6556eb7c14299081302d7f387">GetMaterials</a>().<a class="code" href="class_list.html#ae296516a252e11963dbf963727ce429a">clear</a>();</div>
+<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keyword">delete</span> m;</div>
+<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; }</div>
+<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; }</div>
+<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;</div>
+<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a2c39145db843e6fc3fe5e835cd52b68d">destroy</a>();</div>
+<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;}</div>
+<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;</div>
+<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160;</div>
+<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00227"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#a3c218c2234a06ff6848cd501a103074e"> 227</a></span>&#160;<a class="code" href="class_terrain_patch.html#a3c218c2234a06ff6848cd501a103074e">TerrainPatch::SetScales</a>(<span class="keywordtype">double</span> s, <span class="keywordtype">double</span> m, <span class="keywordtype">double</span> b)</div>
+<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;{</div>
+<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a> = s;</div>
+<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <a class="code" href="class_terrain_patch.html#a11042f0fa0c057b6cd9a8192c05c1727">mtnscale</a> = m;</div>
+<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <a class="code" href="class_terrain_patch.html#a8c4c331e4f49e94ed82f87a9be3a5279">base</a> = b;</div>
+<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160;}</div>
+<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160;</div>
+<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160;</div>
+<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> mcomp(<span class="keyword">const</span> <span class="keywordtype">void</span>* a, <span class="keyword">const</span> <span class="keywordtype">void</span>* b)</div>
+<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;{</div>
+<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* pa = (<a class="code" href="struct_poly.html">Poly</a>*) a;</div>
+<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* pb = (<a class="code" href="struct_poly.html">Poly</a>*) b;</div>
+<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;</div>
+<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordflow">if</span> (pa-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> == pb-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a>)</div>
+<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="keywordflow">return</span> 0;</div>
+<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;</div>
+<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="keywordflow">if</span> (pa-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> &lt; pb-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a>)</div>
+<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="keywordflow">return</span> 1;</div>
+<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;</div>
+<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="keywordflow">return</span> -1;</div>
+<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;}</div>
+<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;</div>
+<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;</div>
+<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> bisect(<a class="code" href="struct_vertex_set.html">VertexSet</a>* vset, <span class="keywordtype">int</span> v[4])</div>
+<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160;{</div>
+<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; <span class="keywordtype">double</span> d1 = fabs(vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[ v[0] ].<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a> -</div>
+<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[ v[3] ].<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a>);</div>
+<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;</div>
+<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; <span class="keywordtype">double</span> d2 = fabs(vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[ v[1] ].<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a> -</div>
+<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[ v[2] ].<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a>);</div>
+<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;</div>
+<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; <span class="keywordflow">if</span> (d2 &lt; 0.7*d1) {</div>
+<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; <span class="keywordtype">int</span> odd[4] = { v[1], v[3], v[0], v[2] };</div>
+<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 4; i++)</div>
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+<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; }</div>
+<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;}</div>
+<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160;</div>
+<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="keywordtype">bool</span></div>
+<div class="line"><a name="l00267"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#aaf3c1b0ef327e924c300aa44de59e397"> 267</a></span>&#160;<a class="code" href="class_terrain_patch.html#aaf3c1b0ef327e924c300aa44de59e397">TerrainPatch::BuildDetailLevel</a>(<span class="keywordtype">int</span> level)</div>
+<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;{</div>
+<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="keywordtype">int</span> i, j;</div>
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+<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordtype">int</span> ds1 = detail_size+1;</div>
+<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160;</div>
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+<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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+<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; <a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>[level] = <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a>;</div>
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+<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; model-&gt;<a class="code" href="class_model.html#a765c577214736ed5423833090c871c17">SetDynamic</a>(<span class="keyword">true</span>);</div>
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+<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> NUM_STRIPS = 4;</div>
+<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="_terrain_apron_8cpp.html#acdaa29bcd166daf9eae4e6c616e84c85">NUM_INDICES_TRI</a> = 3;</div>
+<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span> NUM_INDICES_QUAD = 6;</div>
+<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160;</div>
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+<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; <span class="keywordtype">int</span> npolys = detail_size*detail_size*2;</div>
+<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; <span class="keywordtype">int</span> strip_len = detail_size;</div>
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+<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; strip_len = 0;</div>
+<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; total = npolys;</div>
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+<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; <a class="code" href="struct_vertex_set.html">VertexSet</a>* vset = 0;</div>
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+<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; s-&gt;<a class="code" href="class_surface.html#ad5dfc88bc9cc433dd4053997453646bb">CreateVerts</a>(nverts);</div>
+<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; s-&gt;<a class="code" href="class_surface.html#a45ce266d6d69b040719a582f7e3c9567">CreatePolys</a>(total);</div>
+<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; s-&gt;<a class="code" href="class_surface.html#a783c7765e41d541360da8deaa6d95093">AddIndices</a>(npolys*NUM_INDICES_TRI + strip_len*NUM_STRIPS*NUM_INDICES_QUAD);</div>
+<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;</div>
+<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; vset = s-&gt;<a class="code" href="class_surface.html#af2fac48e415e8fb46b4b5186b94c0a1b">GetVertexSet</a>();</div>
+<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>)</div>
+<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#aaac6cbe561e8f60d0416d73f95ea8315">CreateAdditionalTexCoords</a>();</div>
+<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160;</div>
+<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>, nverts * <span class="keyword">sizeof</span>(<a class="code" href="struct_vec3.html">Vec3</a>));</div>
+<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#aba2d775c75be70d0d821281d2f02d788">diffuse</a>, nverts * <span class="keyword">sizeof</span>(DWORD));</div>
+<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#a2bf3f3497ac0ec9369021a36bd6f50a8">specular</a>, nverts * <span class="keyword">sizeof</span>(DWORD));</div>
+<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#af62b2db3dc8405d7061691a67339604d">tu</a>, nverts * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
+<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#a49d11e5c7d4b3026a5ee92052ff65a9f">tv</a>, nverts * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
+<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#a596bbe94e0ab7b862ef0cc3f199df8ec">tu1</a>, nverts * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
+<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#a6a1b57b8faf21a1fabe96f5ca19a65b4">tv1</a>, nverts * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
+<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; }</div>
+<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; ZeroMemory(vset-&gt;<a class="code" href="struct_vertex_set.html#adba10fd9cb37e93c50aa52edab55e757">rw</a>, nverts * <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
+<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160;</div>
+<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="comment">// initialize vertices</span></div>
+<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; <a class="code" href="struct_vec3.html">Vec3</a>* pVert = vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>;</div>
+<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; <span class="keywordtype">float</span>* pTu = vset-&gt;<a class="code" href="struct_vertex_set.html#af62b2db3dc8405d7061691a67339604d">tu</a>;</div>
+<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; <span class="keywordtype">float</span>* pTv = vset-&gt;<a class="code" href="struct_vertex_set.html#a49d11e5c7d4b3026a5ee92052ff65a9f">tv</a>;</div>
+<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; <span class="keywordtype">float</span>* pTu1 = vset-&gt;<a class="code" href="struct_vertex_set.html#a596bbe94e0ab7b862ef0cc3f199df8ec">tu1</a>;</div>
+<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; <span class="keywordtype">float</span>* pTv1 = vset-&gt;<a class="code" href="struct_vertex_set.html#a6a1b57b8faf21a1fabe96f5ca19a65b4">tv1</a>;</div>
+<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; DWORD* pSpec = vset-&gt;<a class="code" href="struct_vertex_set.html#a2bf3f3497ac0ec9369021a36bd6f50a8">specular</a>;</div>
+<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160;</div>
+<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; <span class="keywordtype">int</span> dscale = (<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>-1)/detail_size;</div>
+<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; <span class="keywordtype">double</span> dt = 0.0625 / (ds1-1); <span class="comment">// terrain texture scale</span></div>
+<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; <span class="keywordtype">double</span> dtt = 2.0000 / (ds1-1); <span class="comment">// tile texture scale</span></div>
+<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; <span class="keywordtype">double</span> tu0 = (double) <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a64d1ef14e429e1816539de4c54361e55">x</a> / <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a36b6c8bb15c7706c3b2b3e91345e11f8">w</a> / 16.0 + 1.0/16.0;</div>
+<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; <span class="keywordtype">double</span> tv0 = (<span class="keywordtype">double</span>) <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a1e37b6f8a4fb0d68ba22c8fffffab0a4">y</a> / <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#af9111a21106ba65952da60320ea91df6">h</a> / 16.0;</div>
+<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;</div>
+<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; <span class="comment">// surface verts</span></div>
+<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; ds1; i++) {</div>
+<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; ds1; j++) {</div>
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+<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; (<span class="keywordtype">float</span>) (<a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[i*dscale*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + j*dscale]),</div>
+<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; (<span class="keywordtype">float</span>) (i* scale * dscale - (<a class="code" href="_terrain_apron_8cpp.html#a0c20caf891fa82dd0ec8d424d38fffd5">HALF_PATCH_SIZE</a>*scale)));</div>
+<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160;</div>
+<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2) {</div>
+<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; *pTu++ = (float) (-j*dtt);</div>
+<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; *pTv++ = (float) ( i*dtt);</div>
+<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160;</div>
+<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; <span class="keywordflow">if</span> (level &gt;= 4 &amp;&amp; !<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160; *pTu1++ = (float) (-j*dtt*3);</div>
+<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; *pTv1++ = (float) ( i*dtt*3);</div>
+<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; }</div>
+<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160;</div>
+<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; *pSpec++ = <a class="code" href="class_terrain_patch.html#ad5794e8cb2f19eeaffda0a28476d1629">BlendValue</a>(pVert-&gt;<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a>);</div>
+<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; }</div>
+<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160;</div>
+<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; *pTu++ = (float) (tu0 - j*dt);</div>
+<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; *pTv++ = (float) (tv0 + i*dt);</div>
+<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160; }</div>
+<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160;</div>
+<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160; pVert++;</div>
+<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; }</div>
+<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160; }</div>
+<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160;</div>
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+<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160; <span class="comment">// strip 1 &amp; 2 verts</span></div>
+<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; ds1; i += detail_size) {</div>
+<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; ds1; j++) {</div>
+<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160; <a class="code" href="struct_vec3.html">Vec3</a> vl = <a class="code" href="struct_vec3.html">Vec3</a>((<span class="keywordtype">float</span>) (j* <a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a> * dscale - (<a class="code" href="_terrain_apron_8cpp.html#a0c20caf891fa82dd0ec8d424d38fffd5">HALF_PATCH_SIZE</a>*<a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a>)),</div>
+<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; (<span class="keywordtype">float</span>) (<a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[i*dscale*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + j*dscale]),</div>
+<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160; (<span class="keywordtype">float</span>) (i* scale * dscale - (<a class="code" href="_terrain_apron_8cpp.html#a0c20caf891fa82dd0ec8d424d38fffd5">HALF_PATCH_SIZE</a>*scale)));</div>
+<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160;</div>
+<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160; *pVert++ = vl;</div>
+<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160;</div>
+<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160; DWORD blend = 0;</div>
+<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160;</div>
+<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2) {</div>
+<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; blend = <a class="code" href="class_terrain_patch.html#ad5794e8cb2f19eeaffda0a28476d1629">BlendValue</a>(vl.<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a>);</div>
+<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160;</div>
+<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; *pSpec++ = blend;</div>
+<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160; *pTu++ = (float) (-j*dtt);</div>
+<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; *pTv++ = (float) ( i*dtt);</div>
+<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160; }</div>
+<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160;</div>
+<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; *pTu++ = (float) (tu0 - j*dt);</div>
+<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; *pTv++ = (float) (tv0 + i*dt);</div>
+<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160; }</div>
+<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160;</div>
+<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160; vl.<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a> = -5000.0f;</div>
+<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160;</div>
+<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160; *pVert++ = vl;</div>
+<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160;</div>
+<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2) {</div>
+<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160; *pSpec++ = blend;</div>
+<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160; *pTu++ = (float) (-j*dtt);</div>
+<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; *pTv++ = (float) ( i*dtt);</div>
+<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; }</div>
+<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160;</div>
+<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; *pTu++ = (float) (tu0 - j*dt);</div>
+<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160; *pTv++ = (float) (tv0 + i*dt);</div>
+<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; }</div>
+<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; }</div>
+<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; }</div>
+<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160;</div>
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+<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; ds1; j += detail_size) {</div>
+<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; ds1; i++) {</div>
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+<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; (<span class="keywordtype">float</span>) (<a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[i*dscale*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + j*dscale]),</div>
+<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; (<span class="keywordtype">float</span>) (i* scale * dscale - (<a class="code" href="_terrain_apron_8cpp.html#a0c20caf891fa82dd0ec8d424d38fffd5">HALF_PATCH_SIZE</a>*scale)));</div>
+<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160;</div>
+<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; *pVert++ = vl;</div>
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+<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; DWORD blend = 0;</div>
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+<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2) {</div>
+<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; blend = <a class="code" href="class_terrain_patch.html#ad5794e8cb2f19eeaffda0a28476d1629">BlendValue</a>(vl.<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a>);</div>
+<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160;</div>
+<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160; *pSpec++ = blend;</div>
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+<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; *pTv++ = (float) ( i*dtt);</div>
+<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; }</div>
+<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160;</div>
+<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; *pTu++ = (float) (tu0 - j*dt);</div>
+<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; *pTv++ = (float) (tv0 + i*dt);</div>
+<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160; }</div>
+<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160;</div>
+<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; vl.<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a> = -5000.0f;</div>
+<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160;</div>
+<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; *pVert++ = vl;</div>
+<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160;</div>
+<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2) {</div>
+<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; *pSpec++ = blend;</div>
+<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160; *pTu++ = (float) (-j*dtt);</div>
+<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; *pTv++ = (float) ( i*dtt);</div>
+<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; }</div>
+<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160;</div>
+<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; *pTu++ = (float) (tu0 - j*dt);</div>
+<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; *pTv++ = (float) (tv0 + i*dt);</div>
+<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; }</div>
+<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; }</div>
+<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160; }</div>
+<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; }</div>
+<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160;</div>
+<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160; <a class="code" href="struct_material.html">Material</a>* m = <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a8aae283be6114a4234b851d5e796634a">first</a>();</div>
+<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;</div>
+<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160; <span class="comment">// initialize the polys</span></div>
+<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; npolys; i++) {</div>
+<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>() + i;</div>
+<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a7c282f5bb936e91855269f710bcbcff7">nverts</a> = 3;</div>
+<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a17e3c99c231b235ee402eb5ea6982d1b">vertex_set</a> = vset;</div>
+<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ae835e02d0cedbf5229bcb958688f9313">visible</a> = 1;</div>
+<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> = 0;</div>
+<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> = m;</div>
+<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160;</div>
+<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2 &amp;&amp; !<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> = <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(1);</div>
+<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> = 1;</div>
+<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160; }</div>
+<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160; }</div>
+<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160;</div>
+<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160; <span class="keywordflow">for</span> (i = npolys; i &lt; total; i++) {</div>
+<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>() + i;</div>
+<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a7c282f5bb936e91855269f710bcbcff7">nverts</a> = 4;</div>
+<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a17e3c99c231b235ee402eb5ea6982d1b">vertex_set</a> = vset;</div>
+<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ae835e02d0cedbf5229bcb958688f9313">visible</a> = 1;</div>
+<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> = 0;</div>
+<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160; p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> = m;</div>
+<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; }</div>
+<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160;</div>
+<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; <span class="keywordtype">int</span> index = 0;</div>
+<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160;</div>
+<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; <span class="comment">// build main patch polys:</span></div>
+<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; detail_size; i++) {</div>
+<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; detail_size; j++) {</div>
+<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160; <span class="keywordtype">int</span> v[4] = {</div>
+<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160; (ds1 * (i ) + (j )),</div>
+<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160; (ds1 * (i ) + (j+1)),</div>
+<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160; (ds1 * (i+1) + (j )),</div>
+<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160; (ds1 * (i+1) + (j+1)) };</div>
+<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160;</div>
+<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; bisect(vset, v);</div>
+<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160;</div>
+<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160; <span class="comment">// first triangle</span></div>
+<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>() + index++;</div>
+<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[0] = v[0];</div>
+<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[1] = v[1];</div>
+<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[2] = v[3];</div>
+<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160;</div>
+<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2 &amp;&amp; !<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160; <span class="keywordtype">int</span> layer = <a class="code" href="class_terrain_patch.html#a2f0234e9239845c98f079386e8e43275">CalcLayer</a>(p) + 1;</div>
+<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160; p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> = <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(layer);</div>
+<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> = layer;</div>
+<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>&#160; }</div>
+<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160;</div>
+<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160; <span class="comment">// second triangle</span></div>
+<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160; p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>() + index++;</div>
+<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[0] = v[0];</div>
+<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[1] = v[3];</div>
+<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[2] = v[2];</div>
+<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160;</div>
+<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2 &amp;&amp; !<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160; <span class="keywordtype">int</span> layer = <a class="code" href="class_terrain_patch.html#a2f0234e9239845c98f079386e8e43275">CalcLayer</a>(p) + 1;</div>
+<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>&#160; p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> = <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(layer);</div>
+<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> = layer;</div>
+<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>&#160; }</div>
+<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>&#160; }</div>
+<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160; }</div>
+<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160;</div>
+<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160; <span class="comment">// build vertical edge strip polys:</span></div>
+<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160;</div>
+<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; NUM_STRIPS; i++) {</div>
+<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>() + npolys + i*strip_len;</div>
+<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; <span class="keywordtype">int</span> base_index = ds1*ds1 + ds1*2*i;</div>
+<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160;</div>
+<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; strip_len; j++) {</div>
+<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <span class="keywordtype">int</span> v = base_index + j * 2;</div>
+<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a7c282f5bb936e91855269f710bcbcff7">nverts</a> = 4;</div>
+<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160;</div>
+<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; <span class="keywordflow">if</span> (i == 1 || i == 2) {</div>
+<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[0] = v;</div>
+<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[1] = v+2;</div>
+<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[2] = v+3;</div>
+<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[3] = v+1;</div>
+<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160; }</div>
+<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160;</div>
+<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[0] = v;</div>
+<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[1] = v+1;</div>
+<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[2] = v+3;</div>
+<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160; p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>[3] = v+2;</div>
+<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160; }</div>
+<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160;</div>
+<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160; <span class="keywordflow">if</span> (level &gt;= 2) {</div>
+<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160; <span class="keywordtype">int</span> layer = <a class="code" href="class_terrain_patch.html#a2f0234e9239845c98f079386e8e43275">CalcLayer</a>(p) + 1;</div>
+<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160; p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> = <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a92f41ba1f2810b54d6b47ce727ff9835">at</a>(layer);</div>
+<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160; p-&gt;<a class="code" href="struct_poly.html#ad974f3a8d591a1dc5455d40f7c106dd5">sortval</a> = layer;</div>
+<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160; }</div>
+<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160;</div>
+<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160; p++;</div>
+<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160; }</div>
+<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160; }</div>
+<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160; }</div>
+<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160;</div>
+<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160; <span class="comment">// update the poly planes:</span></div>
+<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; total; i++) {</div>
+<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>() + i;</div>
+<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160; <a class="code" href="struct_plane.html">Plane</a>&amp; plane = p-&gt;<a class="code" href="struct_poly.html#a5be012ca0623a37857a9ab897c6c731d">plane</a>;</div>
+<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160; WORD* v = p-&gt;<a class="code" href="struct_poly.html#a1b2335f28a4e7bb98956928ee0f0e00e">verts</a>;</div>
+<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160;</div>
+<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160; plane = <a class="code" href="struct_plane.html">Plane</a>(vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[v[0]] + <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>,</div>
+<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[v[1]] + <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>,</div>
+<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[v[2]] + <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>);</div>
+<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160; }</div>
+<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160;</div>
+<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160; s-&gt;<a class="code" href="class_surface.html#a9fd3cfb54fcadd7de7447019cf341dbf">Normalize</a>();</div>
+<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160;</div>
+<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>&#160; <span class="comment">// create continguous segments for each material:</span></div>
+<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160; <span class="comment">// sort the polys by material index:</span></div>
+<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160; qsort((<span class="keywordtype">void</span>*) s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>(), s-&gt;<a class="code" href="class_surface.html#a45cd14771d5cc1937ab85a2e89e5bc08">NumPolys</a>(), <span class="keyword">sizeof</span>(<a class="code" href="struct_poly.html">Poly</a>), mcomp);</div>
+<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160;</div>
+<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160; <span class="comment">// then assign them to cohesive segments:</span></div>
+<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160; <a class="code" href="class_segment.html">Segment</a>* segment = 0;</div>
+<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* spolys = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>();</div>
+<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160;</div>
+<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = 0; n &lt; s-&gt;<a class="code" href="class_surface.html#a45cd14771d5cc1937ab85a2e89e5bc08">NumPolys</a>(); n++) {</div>
+<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>&#160; <span class="keywordflow">if</span> (segment &amp;&amp; segment-&gt;<a class="code" href="class_segment.html#a315eceab50f153e784630d1705ddf706">material</a> == spolys[n].<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a>) {</div>
+<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>&#160; segment-&gt;<a class="code" href="class_segment.html#aa56fe5f47ddde76648a7aac53934eda8">npolys</a>++;</div>
+<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160; }</div>
+<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>&#160; segment = 0;</div>
+<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>&#160; }</div>
+<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>&#160;</div>
+<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>&#160; <span class="keywordflow">if</span> (!segment) {</div>
+<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>&#160; segment = <span class="keyword">new</span>(__FILE__,__LINE__) <a class="code" href="class_segment.html">Segment</a>;</div>
+<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>&#160;</div>
+<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>&#160; segment-&gt;<a class="code" href="class_segment.html#aa56fe5f47ddde76648a7aac53934eda8">npolys</a> = 1;</div>
+<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>&#160; segment-&gt;<a class="code" href="class_segment.html#a5d14ea63073c220aa084bdaf961269a3">polys</a> = &amp;spolys[n];</div>
+<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>&#160; segment-&gt;<a class="code" href="class_segment.html#a315eceab50f153e784630d1705ddf706">material</a> = segment-&gt;<a class="code" href="class_segment.html#a5d14ea63073c220aa084bdaf961269a3">polys</a>-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a>;</div>
+<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>&#160; segment-&gt;<a class="code" href="class_segment.html#a02b25a9d5ce95913122597af5e136dc0">model</a> = <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a>;</div>
+<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>&#160;</div>
+<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>&#160; s-&gt;<a class="code" href="class_surface.html#a916cefb968876b6844c0059072589d13">GetSegments</a>().<a class="code" href="class_list.html#ab3180edb4da02be2a4b62320071755b8">append</a>(segment);</div>
+<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>&#160; }</div>
+<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>&#160; }</div>
+<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160;</div>
+<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160; <a class="code" href="class_solid.html#a49925b6090a9c0e19fd89f23aa3274b6">Solid::EnableCollision</a>(<span class="keyword">false</span>);</div>
+<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>&#160; model-&gt;<a class="code" href="class_model.html#ad03998d29bfa2a38e302a1581e2db8dd">AddSurface</a>(s);</div>
+<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160; <a class="code" href="class_solid.html#a49925b6090a9c0e19fd89f23aa3274b6">Solid::EnableCollision</a>(<span class="keyword">true</span>);</div>
+<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160;</div>
+<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>&#160; <span class="comment">// copy vertex normals:</span></div>
+<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>&#160; <span class="keyword">const</span> <a class="code" href="struct_vec3_b.html">Vec3B</a>* tnorms = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a0428784079fbc3b8f825165241277be6">Normals</a>();</div>
+<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>&#160;</div>
+<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160; <span class="keywordflow">for</span> (i = 0; i &lt; ds1; i++) {</div>
+<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; ds1; j++) {</div>
+<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160;</div>
+<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#a8ec6916c3e1db17ea271ccaa7a839b07">nrm</a>[i*ds1+j] = <a class="code" href="struct_point.html">Point</a>(0,1,0);</div>
+<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>&#160; }</div>
+<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>&#160;</div>
+<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160; <span class="comment">// blend adjacent normals:</span></div>
+<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (dscale &gt; 1) {</div>
+<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160; <a class="code" href="struct_point.html">Point</a> normal;</div>
+<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160;</div>
+<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160; <span class="comment">// but don&#39;t blend more than 16 normals per vertex:</span></div>
+<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160; <span class="keywordtype">int</span> step = 1;</div>
+<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160; <span class="keywordflow">if</span> (dscale &gt; 4)</div>
+<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160; step = dscale / 4;</div>
+<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160;</div>
+<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> dy = -dscale/2; dy &lt; dscale/2; dy += step) {</div>
+<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> dx = -dscale/2; dx &lt; dscale/2; dx += step) {</div>
+<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>&#160; <span class="keywordtype">int</span> ix = <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a64d1ef14e429e1816539de4c54361e55">x</a> + (ds1-1-j)*dscale + dx;</div>
+<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>&#160; <span class="keywordtype">int</span> iy = <a class="code" href="class_terrain_patch.html#af7977bb9b8a9b6137284db8f2eab3c96">rect</a>.<a class="code" href="struct_rect.html#a1e37b6f8a4fb0d68ba22c8fffffab0a4">y</a> + i*dscale + dy;</div>
+<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>&#160;</div>
+<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>&#160; <span class="keywordflow">if</span> (ix &lt; 0) ix = 0;</div>
+<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>&#160; <span class="keywordflow">if</span> (ix &gt; <a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a>-1) ix = <a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a>-1;</div>
+<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>&#160; <span class="keywordflow">if</span> (iy &lt; 0) iy = 0;</div>
+<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>&#160; <span class="keywordflow">if</span> (iy &gt; <a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a>-1) iy = <a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a>-1;</div>
+<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>&#160;</div>
+<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>&#160; <a class="code" href="struct_vec3_b.html">Vec3B</a> vbn = tnorms[iy*<a class="code" href="class_terrain_patch.html#ae89bb2897196cea7e4c7bc2247bf11b1">terrain_width</a> + ix];</div>
+<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>&#160; normal += <a class="code" href="struct_point.html">Point</a>((128-vbn.<a class="code" href="struct_vec3_b.html#adde019b4bfccd945c9d45390c438c899">x</a>)/127.0, (vbn.<a class="code" href="struct_vec3_b.html#a989153b1fa76599dd3ea313529853675">z</a>-128)/127.0, (vbn.<a class="code" href="struct_vec3_b.html#a817714c27846a743121e49392b9a1976">y</a>-128)/127.0);</div>
+<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>&#160; }</div>
+<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>&#160; }</div>
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+<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>&#160; normal.<a class="code" href="struct_point.html#a6efd403e2a6c0aa686e278d244d5e525">Normalize</a>();</div>
+<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#a8ec6916c3e1db17ea271ccaa7a839b07">nrm</a>[i*ds1+j] = normal;</div>
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+<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>&#160;</div>
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+<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>&#160; }</div>
+<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>&#160; }</div>
+<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>&#160; }</div>
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+<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>&#160;</div>
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+<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>&#160; }</div>
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+<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>&#160; <span class="keywordflow">for</span> (j = 0; j &lt; ds1; j += detail_size) {</div>
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+<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>&#160; *pVert++ = vn;</div>
+<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>&#160; *pVert++ = vn;</div>
+<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>&#160; }</div>
+<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>&#160; }</div>
+<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>&#160; }</div>
+<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>&#160; }</div>
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+<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>&#160; <a class="code" href="class_terrain_patch.html#ad4b7de3fbba0e7fa97eb0214ea88b16c">max_detail</a> = level;</div>
+<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>&#160;</div>
+<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
+<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>&#160;}</div>
+<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>&#160;</div>
+<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
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+<div class="line"><a name="l00675"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#ad5794e8cb2f19eeaffda0a28476d1629"> 675</a></span>&#160;<a class="code" href="class_terrain_patch.html#ad5794e8cb2f19eeaffda0a28476d1629">TerrainPatch::BlendValue</a>(<span class="keywordtype">double</span> y)</div>
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+<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a> &amp;&amp; y &gt;= 0 &amp;&amp; !<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>&#160; <span class="comment">// find the proper layer:</span></div>
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+<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>&#160; }</div>
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+<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>&#160; }</div>
+<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>&#160; }</div>
+<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>&#160; }</div>
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+<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>&#160;}</div>
+<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>&#160;</div>
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+<div class="line"><a name="l00707"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#a2f0234e9239845c98f079386e8e43275"> 707</a></span>&#160;<a class="code" href="class_terrain_patch.html#a2f0234e9239845c98f079386e8e43275">TerrainPatch::CalcLayer</a>(<a class="code" href="struct_poly.html">Poly</a>* poly)</div>
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+<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a> &amp;&amp; poly) {</div>
+<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>)</div>
+<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>&#160; <span class="keywordflow">return</span> 0;</div>
+<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>&#160;</div>
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+<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>&#160; <span class="keywordflow">return</span> 0;</div>
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+<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>&#160;</div>
+<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>&#160; <span class="comment">// build detail levels on demand:</span></div>
+<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>[<a class="code" href="class_terrain_patch.html#a0840cda0e4d9159fbf90a53b014a3420">ndetail</a>] == 0)</div>
+<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>&#160; <a class="code" href="class_terrain_patch.html#aaf3c1b0ef327e924c300aa44de59e397">BuildDetailLevel</a>(<a class="code" href="class_terrain_patch.html#a0840cda0e4d9159fbf90a53b014a3420">ndetail</a>);</div>
+<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>&#160;</div>
+<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>&#160; <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a> = <a class="code" href="class_terrain_patch.html#a3051037ed39305c114af8589a33fa4ff">detail_levels</a>[<a class="code" href="class_terrain_patch.html#a0840cda0e4d9159fbf90a53b014a3420">ndetail</a>];</div>
+<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>&#160;</div>
+<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>)</div>
+<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>&#160; <a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a> = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#af0f4e75c28222a0af4b30a987f81e90c">GetWater</a>(<a class="code" href="class_terrain_patch.html#a0840cda0e4d9159fbf90a53b014a3420">ndetail</a>);</div>
+<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>&#160; }</div>
+<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>&#160;}</div>
+<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>&#160;</div>
+<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>&#160;</div>
+<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>&#160;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00805"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#a54dea9655327a11d3c29b918aa8b8ef7"> 805</a></span>&#160;<a class="code" href="class_terrain_patch.html#a54dea9655327a11d3c29b918aa8b8ef7">TerrainPatch::Illuminate</a>(<a class="code" href="class_color.html">Color</a> <a class="code" href="class_terrain_region.html#a8e269451178cd5858275a5b04f6a9030">ambient</a>, <a class="code" href="class_list.html">List&lt;Light&gt;</a>&amp; lights)</div>
+<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>&#160;{</div>
+<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a> || <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a>-&gt;<a class="code" href="class_model.html#a2eca281d394bec3ac1556b2a5f8fabaa">NumVerts</a>() &lt; 1) <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>&#160; <a class="code" href="class_surface.html">Surface</a>* s = <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a>-&gt;<a class="code" href="class_model.html#ace987f384a7f542279ba7efecfbd37e3">GetSurfaces</a>().<a class="code" href="class_list.html#a8aae283be6114a4234b851d5e796634a">first</a>();</div>
+<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>&#160; <span class="keywordflow">if</span> (!s) <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>&#160;</div>
+<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>&#160; illuminating = <span class="keyword">true</span>;</div>
+<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>&#160;</div>
+<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>&#160; <span class="comment">// clear the solid lights to ambient:</span></div>
+<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>&#160; <a class="code" href="struct_vertex_set.html">VertexSet</a>* vset = s-&gt;<a class="code" href="class_surface.html#af2fac48e415e8fb46b4b5186b94c0a1b">GetVertexSet</a>();</div>
+<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>&#160; <span class="keywordtype">int</span> nverts = vset-&gt;<a class="code" href="struct_vertex_set.html#a4942a5af779580847cfe7036b4ba5c3f">nverts</a>;</div>
+<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>&#160; DWORD aval = ambient.<a class="code" href="class_color.html#a601f1ea0ac8b6f3d420021e6086b8a6a">Value</a>();</div>
+<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>&#160;</div>
+<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nverts; i++) {</div>
+<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#aba2d775c75be70d0d821281d2f02d788">diffuse</a>[i] = aval;</div>
+<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>&#160; }</div>
+<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>&#160;</div>
+<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>&#160; <a class="code" href="class_terrain_region.html">TerrainRegion</a>* trgn = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a455ff0ec4ab654d264dfe199f88ae36b">GetRegion</a>();</div>
+<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>&#160; <span class="keywordtype">bool</span> <a class="code" href="class_terrain_region.html#ae39039897cd132b8f3d27fea8fd6dd04">eclipsed</a> = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>&#160; <span class="keywordtype">bool</span> first = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a40d040fa6552b0b66986d44d11357c9a">IsFirstPatch</a>(<span class="keyword">this</span>);</div>
+<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>&#160;</div>
+<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>&#160; <span class="keywordflow">if</span> (trgn &amp;&amp; !first) {</div>
+<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>&#160; eclipsed = trgn-&gt;<a class="code" href="class_terrain_region.html#a5ac6765fd43d99ef452e9965c7fd6957">IsEclipsed</a>();</div>
+<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>&#160; }</div>
+<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>&#160;</div>
+<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>&#160; <span class="comment">// for sun and back lights:</span></div>
+<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>&#160; <a class="code" href="class_list_iter.html">ListIter&lt;Light&gt;</a> iter = lights;</div>
+<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>&#160; <span class="keywordflow">while</span> (++iter) {</div>
+<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>&#160; <a class="code" href="class_light.html">Light</a>* light = iter.<a class="code" href="class_list_iter.html#a70cb1260924c01a38c4a68552120a5e0">value</a>();</div>
+<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>&#160;</div>
+<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>&#160; <span class="keywordflow">if</span> (!light-&gt;<a class="code" href="class_light.html#a2dd355438969673dc055c765340d3ebc">IsDirectional</a>()) <span class="comment">// only do sun and</span></div>
+<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>&#160; <span class="keywordflow">continue</span>; <span class="comment">// back lights</span></div>
+<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>&#160;</div>
+<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>&#160; <span class="keywordflow">if</span> (light-&gt;<a class="code" href="class_light.html#a00c488439151ac75ae67b27fae08d284">CastsShadow</a>() &amp;&amp; first) {</div>
+<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>&#160; eclipsed = light-&gt;<a class="code" href="class_light.html#af1bdc26f6d1d7f0b0da9c58a3f6866fe">Location</a>().<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> &lt; -100 || <span class="comment">// has sun set, or</span></div>
+<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>&#160;</div>
+<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>&#160; <a class="code" href="class_graphic.html#ab3a0ecdf867c61704fdca3d2414ace21">scene</a>-&gt;<a class="code" href="class_scene.html#ae0e73b0cb00d77f9bfd8e3b90ba736a8">IsLightObscured</a>(vset-&gt;<a class="code" href="struct_vertex_set.html#ace261b0101f85d89b26e2fbfec6a8c28">loc</a>[0], <span class="comment">// is sun in eclipse</span></div>
+<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>&#160; light-&gt;<a class="code" href="class_light.html#af1bdc26f6d1d7f0b0da9c58a3f6866fe">Location</a>(), <span class="comment">// by orbital body</span></div>
+<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>&#160; <a class="code" href="class_graphic.html#a375d4c28b1feb40e12fb5a7cbba6a59c">radius</a>); <span class="comment">// such as a moon?</span></div>
+<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>&#160; }</div>
+<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>&#160;</div>
+<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>&#160; <span class="keywordflow">if</span> (!light-&gt;<a class="code" href="class_light.html#a00c488439151ac75ae67b27fae08d284">CastsShadow</a>() || !<a class="code" href="class_terrain_region.html#ae39039897cd132b8f3d27fea8fd6dd04">eclipsed</a>) {</div>
+<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>&#160; <a class="code" href="struct_vec3.html">Vec3</a> vl = light-&gt;<a class="code" href="class_light.html#af1bdc26f6d1d7f0b0da9c58a3f6866fe">Location</a>();</div>
+<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>&#160; vl.<a class="code" href="struct_vec3.html#a269d13893a87a616b6709e5fc3d34d4f">Normalize</a>();</div>
+<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>&#160;</div>
+<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nverts; i++) {</div>
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+<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>&#160; <span class="keywordtype">double</span> val = 0;</div>
+<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>&#160; <span class="keywordtype">double</span> gain = vl * nrm;</div>
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+<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>&#160; <span class="keywordflow">if</span> (gain &gt; 0) {</div>
+<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>&#160; val = light-&gt;<a class="code" href="class_light.html#a4e34f091f98e512e065e120206de0d8b">Intensity</a>() * (0.85 * gain);</div>
+<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>&#160;</div>
+<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>&#160; <span class="keywordflow">if</span> (val &gt; 1)</div>
+<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>&#160; val = 1;</div>
+<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>&#160; }</div>
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+<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>&#160; <span class="keywordflow">if</span> (val &gt; 0.01)</div>
+<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>&#160; vset-&gt;<a class="code" href="struct_vertex_set.html#aba2d775c75be70d0d821281d2f02d788">diffuse</a>[i] = ((light-&gt;<a class="code" href="class_light.html#a5868e2a9de93df1ee1338920990acc9f">GetColor</a>().<a class="code" href="class_color.html#a33e1288ed19c3a5bd1854fafe37dc541">dim</a>(val)) + vset-&gt;<a class="code" href="struct_vertex_set.html#aba2d775c75be70d0d821281d2f02d788">diffuse</a>[i]).Value();</div>
+<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>&#160; }</div>
+<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>&#160; }</div>
+<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>&#160; }</div>
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+<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a0840cda0e4d9159fbf90a53b014a3420">ndetail</a> &gt;= 2) {</div>
+<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nverts; i++) {</div>
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+<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>&#160; }</div>
+<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>&#160; }</div>
+<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>&#160;</div>
+<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>&#160; <span class="keywordflow">if</span> (trgn &amp;&amp; first) {</div>
+<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>&#160; trgn-&gt;<a class="code" href="class_terrain_region.html#ad75a12d41105be365e5919747312fc4a">SetEclipsed</a>(eclipsed);</div>
+<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>&#160; }</div>
+<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>&#160;</div>
+<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>&#160; <a class="code" href="class_solid.html#a357eb8304578288cbec5118ce3708114">InvalidateSurfaceData</a>();</div>
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+<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>&#160;}</div>
+<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>&#160;</div>
+<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>&#160;</div>
+<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>&#160;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00886"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#a9209d92f3244548b714d3b67cbc3d90a"> 886</a></span>&#160;<a class="code" href="class_terrain_patch.html#a9209d92f3244548b714d3b67cbc3d90a">TerrainPatch::Render</a>(<a class="code" href="class_video.html">Video</a>* video, DWORD flags)</div>
+<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>&#160;{</div>
+<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a392520e7b02ccc4d949defc471aa1247">max_height</a> &lt; 0)</div>
+<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>&#160; <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>&#160;</div>
+<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>&#160; <span class="keywordflow">if</span> (flags &amp; <a class="code" href="class_graphic.html#a9916b73164fa91ae51d5d1964a19923ba29558b48b11569eddf097dde625072af">RENDER_ADDITIVE</a>)</div>
+<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>&#160; <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>&#160;</div>
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+<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>&#160;</div>
+<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_graphic.html#ab3a0ecdf867c61704fdca3d2414ace21">scene</a>) {</div>
+<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>&#160; <span class="comment">/***</span></div>
+<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>&#160;<span class="comment"> *** TWO PASS LIGHTING FOR TERRAIN SHADOWS DOESN&#39;T</span></div>
+<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>&#160;<span class="comment"> *** WORK - IT MESSES UP THE HARDWARE FOG CALCS</span></div>
+<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>&#160;<span class="comment"> ***</span></div>
+<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>&#160;<span class="comment"> *** PLUS, IT&#39;S INCREDIBLY SLOW!!!</span></div>
+<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>&#160;<span class="comment"> ***/</span></div>
+<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>&#160;</div>
+<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>&#160; <span class="keywordflow">if</span> ((flags &amp; <a class="code" href="class_graphic.html#a9916b73164fa91ae51d5d1964a19923baf8ce820255bbf2c5498560e237e7f95a">RENDER_ADD_LIGHT</a>) != 0)</div>
+<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>&#160; <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>&#160;</div>
+<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) {</div>
+<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>&#160; <a class="code" href="class_terrain_patch.html#a3840075d8762f715f95ff69afe737ae7">UpdateSurfaceWaves</a>(<a class="code" href="struct_vec3.html">Vec3</a>(0,0,0));</div>
+<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>&#160; <a class="code" href="class_terrain_patch.html#a54dea9655327a11d3c29b918aa8b8ef7">Illuminate</a>(<a class="code" href="class_graphic.html#ab3a0ecdf867c61704fdca3d2414ace21">scene</a>-&gt;<a class="code" href="class_scene.html#ae07a7c30fa3db8add389570ffd76703a">Ambient</a>(), <a class="code" href="class_graphic.html#ab3a0ecdf867c61704fdca3d2414ace21">scene</a>-&gt;<a class="code" href="class_scene.html#a3ad8b17aed8bc3d675e0452e7a626152">Lights</a>());</div>
+<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>&#160; }</div>
+<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>&#160; <a class="code" href="class_terrain_patch.html#a54dea9655327a11d3c29b918aa8b8ef7">Illuminate</a>(<a class="code" href="class_graphic.html#ab3a0ecdf867c61704fdca3d2414ace21">scene</a>-&gt;<a class="code" href="class_scene.html#ae07a7c30fa3db8add389570ffd76703a">Ambient</a>(), <a class="code" href="class_graphic.html#ab3a0ecdf867c61704fdca3d2414ace21">scene</a>-&gt;<a class="code" href="class_scene.html#a3ad8b17aed8bc3d675e0452e7a626152">Lights</a>());</div>
+<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>&#160; }</div>
+<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>&#160; }</div>
+<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>&#160; <span class="keywordflow">if</span> ((flags &amp; <a class="code" href="class_graphic.html#a9916b73164fa91ae51d5d1964a19923baf8ce820255bbf2c5498560e237e7f95a">RENDER_ADD_LIGHT</a>) != 0)</div>
+<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>&#160; <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>&#160; }</div>
+<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>&#160;</div>
+<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>&#160; <a class="code" href="class_bitmap.html">Bitmap</a>* details[16];</div>
+<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>&#160; ZeroMemory(details, <span class="keyword">sizeof</span>(details));</div>
+<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>&#160;</div>
+<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#a0840cda0e4d9159fbf90a53b014a3420">ndetail</a> &lt; 3) {</div>
+<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 16 &amp;&amp; i &lt; <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>.<a class="code" href="class_list.html#a802e2aa9aaef248591140fa032d20d61">size</a>(); i++) {</div>
+<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>&#160; <a class="code" href="struct_material.html">Material</a>* mtl = <a class="code" href="class_terrain_patch.html#ae6b247bb81ef5289a83c3e523a8c8451">materials</a>[i];</div>
+<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>&#160;</div>
+<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>&#160; <span class="keywordflow">if</span> (mtl-&gt;<a class="code" href="struct_material.html#a84da46b60cffcfa54aec42729a632538">tex_detail</a>) {</div>
+<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>&#160; details[i] = mtl-&gt;<a class="code" href="struct_material.html#a84da46b60cffcfa54aec42729a632538">tex_detail</a>;</div>
+<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a84da46b60cffcfa54aec42729a632538">tex_detail</a> = 0;</div>
+<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>&#160; }</div>
+<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>&#160; }</div>
+<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>&#160; }</div>
+<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>&#160;</div>
+<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>&#160; <span class="keywordtype">double</span> visibility = <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a455ff0ec4ab654d264dfe199f88ae36b">GetRegion</a>()-&gt;<a class="code" href="class_terrain_region.html#a55a8c2741d1e2f7fd6ad3551b78f4e25">GetWeather</a>().<a class="code" href="class_weather.html#a9c5719167d3e530924c14c1bb42193af">Visibility</a>();</div>
+<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>&#160; FLOAT <a class="code" href="class_terrain_region.html#a99b65df2d049ee3a2bbee98ad6e835e5">fog_density</a> = (FLOAT) (<a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a455ff0ec4ab654d264dfe199f88ae36b">GetRegion</a>()-&gt;<a class="code" href="class_terrain_region.html#aaedebb8826beb26c7d1ff40fc884d4ee">FogDensity</a>() * 2.5e-5 * 1/visibility);</div>
+<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>&#160;</div>
+<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9a46b369ce2c6d214557aa84a385b35a20">Video::LIGHTING_ENABLE</a>, <span class="keyword">false</span>);</div>
+<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9acb00af309eb074384b035f4949b67701">Video::SPECULAR_ENABLE</a>, <span class="keyword">false</span>); <span class="comment">//water != 0);</span></div>
+<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9adff6f9efb1d3c44099bdd6c379c785a1">Video::FOG_ENABLE</a>, <span class="keyword">true</span>);</div>
+<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9ad4bf22671a842645b5cd6d2fa24cb8c6">Video::FOG_COLOR</a>, <a class="code" href="class_terrain_patch.html#a1e98334d55b3fa7c8986df6097891ea9">terrain</a>-&gt;<a class="code" href="class_terrain.html#a455ff0ec4ab654d264dfe199f88ae36b">GetRegion</a>()-&gt;<a class="code" href="class_terrain_region.html#a3d5b73132615deb41bd204a099cce3e0">FogColor</a>().<a class="code" href="class_color.html#a601f1ea0ac8b6f3d420021e6086b8a6a">Value</a>());</div>
+<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9a06b98ef0e0a0ea6f75c07c312cd27507">Video::FOG_DENSITY</a>, *((DWORD*) &amp;fog_density));</div>
+<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>&#160;</div>
+<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>&#160; <span class="comment">// Too bad this doesn&#39;t work right. But it makes the</span></div>
+<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>&#160; <span class="comment">// ground mostly disappear. :-(</span></div>
+<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>&#160; <span class="comment">//</span></div>
+<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>&#160; <span class="comment">//video-&gt;SetRenderState(Video::Z_BIAS, -2);</span></div>
+<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>&#160;</div>
+<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>&#160; <a class="code" href="class_terrain_patch.html#a9209d92f3244548b714d3b67cbc3d90a">Solid::Render</a>(video, flags);</div>
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+<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9acb00af309eb074384b035f4949b67701">Video::SPECULAR_ENABLE</a>, <span class="keyword">true</span>);</div>
+<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>&#160; video-&gt;<a class="code" href="class_video.html#ad6d15be603f17d68b69c9be8c5a91cbc">SetRenderState</a>(<a class="code" href="class_video.html#a6714be092b4fd2a23735f8e5325f52b9adff6f9efb1d3c44099bdd6c379c785a1">Video::FOG_ENABLE</a>, <span class="keyword">false</span>);</div>
+<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>&#160; <span class="comment">//video-&gt;SetRenderState(Video::Z_BIAS, 0);</span></div>
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+<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>&#160;</div>
+<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>&#160; <span class="keywordflow">if</span> (details[i] &amp;&amp; !mtl-&gt;<a class="code" href="struct_material.html#a84da46b60cffcfa54aec42729a632538">tex_detail</a>) {</div>
+<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>&#160; mtl-&gt;<a class="code" href="struct_material.html#a84da46b60cffcfa54aec42729a632538">tex_detail</a> = details[i];</div>
+<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>&#160; }</div>
+<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>&#160; }</div>
+<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>&#160; }</div>
+<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>&#160;}</div>
+<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>&#160;</div>
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+<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>&#160;</div>
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+<div class="line"><a name="l00970"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#aecdb2ade4ecea242b1a605d451aeb3cc"> 970</a></span>&#160;<a class="code" href="class_terrain_patch.html#aecdb2ade4ecea242b1a605d451aeb3cc">TerrainPatch::CheckRayIntersection</a>(<a class="code" href="struct_point.html">Point</a> obj_pos, <a class="code" href="struct_point.html">Point</a> dir, <span class="keywordtype">double</span> len, <a class="code" href="struct_point.html">Point</a>&amp; ipt, <span class="keywordtype">bool</span> ttpas)</div>
+<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>&#160;{</div>
+<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>&#160; <a class="code" href="struct_point.html">Point</a> light_pos = obj_pos + dir * len;</div>
+<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>&#160; <span class="keywordtype">int</span> impact = light_pos.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> &lt; -100;</div>
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+<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>&#160; <span class="comment">// Special case for illumination -</span></div>
+<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>&#160; <span class="comment">// just check if sun is above or below the horizon:</span></div>
+<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>&#160;</div>
+<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>&#160; <span class="keywordflow">if</span> (illuminating || impact) {</div>
+<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>&#160; <span class="keywordflow">return</span> impact;</div>
+<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>&#160; }</div>
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+<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>&#160; <span class="keywordflow">if</span> (obj_pos.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> != 0 || obj_pos.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> != 0 || obj_pos.<a class="code" href="struct_point.html#a05ba3b1dfcb19430582ae953cbbfbded">z</a> != 0) {</div>
+<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>&#160; <span class="keywordflow">return</span> impact;</div>
+<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>&#160; }</div>
+<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>&#160;</div>
+<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>&#160; <span class="comment">// the rest of this code is only used for eclipsing</span></div>
+<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>&#160; <span class="comment">// the solar lens flare:</span></div>
+<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>&#160;</div>
+<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>&#160; <span class="comment">// check right angle spherical distance:</span></div>
+<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>&#160; <a class="code" href="struct_point.html">Point</a> d0 = <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>;</div>
+<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>&#160; <a class="code" href="struct_point.html">Point</a> d1 = d0.<a class="code" href="struct_point.html#ae600bcc9fe480e782a05fade3b78f8c0">cross</a>(dir);</div>
+<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>&#160; <span class="keywordtype">double</span> dlen = d1.<a class="code" href="struct_point.html#a8ebcce847b8c214b7351904ce60f5518">length</a>(); <span class="comment">// distance of point from line</span></div>
+<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>&#160;</div>
+<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>&#160; <span class="keywordflow">if</span> (dlen &gt; <a class="code" href="class_graphic.html#a375d4c28b1feb40e12fb5a7cbba6a59c">radius</a>) <span class="comment">// clean miss</span></div>
+<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>&#160; <span class="keywordflow">return</span> 0; <span class="comment">// (no impact)</span></div>
+<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>&#160;</div>
+<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>&#160; <span class="comment">// make sure some part of this patch falls between</span></div>
+<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>&#160; <span class="comment">// the camera and the sun:</span></div>
+<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>&#160;</div>
+<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160; <a class="code" href="struct_point.html">Point</a> closest = <a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a> + dir * <a class="code" href="class_graphic.html#a375d4c28b1feb40e12fb5a7cbba6a59c">radius</a>;</div>
+<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;</div>
+<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160; <span class="keywordflow">if</span> (closest * dir &lt; 0)</div>
+<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160; <span class="keywordflow">return</span> 0;</div>
+<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;</div>
+<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160; <span class="comment">// probable hit at this point...</span></div>
+<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160; <span class="comment">// test for polygon intersection:</span></div>
+<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a>)</div>
+<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160; <span class="keywordflow">return</span> 0;</div>
+<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160;</div>
+<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160; <a class="code" href="class_surface.html">Surface</a>* s = <a class="code" href="class_solid.html#af40b436e67a38f424ea63758efc063c4">model</a>-&gt;<a class="code" href="class_model.html#ace987f384a7f542279ba7efecfbd37e3">GetSurfaces</a>().<a class="code" href="class_list.html#a8aae283be6114a4234b851d5e796634a">first</a>();</div>
+<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;</div>
+<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160; <span class="keywordflow">if</span> (!s)</div>
+<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160; <span class="keywordflow">return</span> 0;</div>
+<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;</div>
+<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;</div>
+<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160; <span class="comment">// transform ray into object space:</span></div>
+<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160; <a class="code" href="struct_matrix.html">Matrix</a> xform(<a class="code" href="class_solid.html#a1d78a55ebf9711da164c72779825806b">Orientation</a>());</div>
+<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;</div>
+<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160; <a class="code" href="struct_vec3.html">Vec3</a> tmp = dir;</div>
+<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;</div>
+<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160; dir.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> = tmp * <a class="code" href="struct_vec3.html">Vec3</a>(xform(0,0), xform(0,1), xform(0,2));</div>
+<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160; dir.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> = tmp * Vec3(xform(1,0), xform(1,1), xform(1,2));</div>
+<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160; dir.<a class="code" href="struct_point.html#a05ba3b1dfcb19430582ae953cbbfbded">z</a> = tmp * Vec3(xform(2,0), xform(2,1), xform(2,2));</div>
+<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;</div>
+<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160; tmp = obj_pos-<a class="code" href="class_graphic.html#a9ce2c536ee7744836ddde006907df8e7">loc</a>;</div>
+<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;</div>
+<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160; obj_pos.<a class="code" href="struct_point.html#ab99c56589bc8ad5fa5071387110a5bc7">x</a> = tmp * Vec3(xform(0,0), xform(0,1), xform(0,2));</div>
+<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160; obj_pos.<a class="code" href="struct_point.html#afa38be143ae800e6ad69ce8ed4df62d8">y</a> = tmp * Vec3(xform(1,0), xform(1,1), xform(1,2));</div>
+<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160; obj_pos.<a class="code" href="struct_point.html#a05ba3b1dfcb19430582ae953cbbfbded">z</a> = tmp * Vec3(xform(2,0), xform(2,1), xform(2,2));</div>
+<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;</div>
+<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160; <span class="keywordtype">double</span> min = 2 * len;</div>
+<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;</div>
+<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160; <span class="comment">// check each polygon:</span></div>
+<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160; <a class="code" href="struct_poly.html">Poly</a>* p = s-&gt;<a class="code" href="class_surface.html#a825c00815c558d148be44147e04367e4">GetPolys</a>();</div>
+<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;</div>
+<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; s-&gt;<a class="code" href="class_surface.html#a45cd14771d5cc1937ab85a2e89e5bc08">NumPolys</a>(); i++) {</div>
+<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160; <a class="code" href="struct_point.html">Point</a> v = p-&gt;<a class="code" href="struct_poly.html#a5be012ca0623a37857a9ab897c6c731d">plane</a>.<a class="code" href="struct_plane.html#a4fca1d30bfad2542c8e38aa32ff13655">normal</a>;</div>
+<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160; <span class="keywordtype">double</span> d = p-&gt;<a class="code" href="struct_poly.html#a5be012ca0623a37857a9ab897c6c731d">plane</a>.<a class="code" href="struct_plane.html#a6ad7fdbb1461aa0527eb1f6745e10962">distance</a>;</div>
+<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;</div>
+<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160; <span class="keywordtype">double</span> denom = dir*v;</div>
+<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;</div>
+<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160; <span class="keywordflow">if</span> (denom &lt; -1.0e-5) {</div>
+<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160; <a class="code" href="struct_point.html">Point</a> P = v * d;</div>
+<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160; <span class="keywordtype">double</span> ilen = ((P-obj_pos)*v)/denom;</div>
+<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;</div>
+<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160; <span class="keywordflow">if</span> (ilen &gt; 0 &amp;&amp; ilen &lt; min) {</div>
+<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160; <a class="code" href="struct_point.html">Point</a> intersect = obj_pos + dir * ilen;</div>
+<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;</div>
+<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160; <span class="keywordflow">if</span> (p-&gt;<a class="code" href="struct_poly.html#a59d6612e72067b94da2d772b74b3eee9">Contains</a>(intersect)) {</div>
+<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160; ipt = intersect;</div>
+<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160; min = ilen;</div>
+<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160; impact = 1;</div>
+<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160; }</div>
+<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160; }</div>
+<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160; }</div>
+<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;</div>
+<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160; p++;</div>
+<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160; }</div>
+<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;</div>
+<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160; <span class="comment">// xform impact point back into world coordinates:</span></div>
+<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;</div>
+<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160; <span class="keywordflow">if</span> (impact) {</div>
+<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160; ipt = (ipt * <a class="code" href="class_solid.html#a1d78a55ebf9711da164c72779825806b">Orientation</a>()) + loc;</div>
+<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160; }</div>
+<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;</div>
+<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160; <span class="keywordflow">return</span> impact;</div>
+<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;}</div>
+<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;</div>
+<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;</div>
+<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;<span class="keywordtype">double</span></div>
+<div class="line"><a name="l01072"></a><span class="lineno"><a class="code" href="class_terrain_patch.html#ab157e48084f36bccc5092f1f51101e48"> 1072</a></span>&#160;<a class="code" href="class_terrain_patch.html#ab157e48084f36bccc5092f1f51101e48">TerrainPatch::Height</a>(<span class="keywordtype">double</span> x, <span class="keywordtype">double</span> z)<span class="keyword"> const</span></div>
+<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;<span class="keyword"></span>{</div>
+<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_terrain_patch.html#aaef7896faec575710b901b6aa2a991b2">water</a>) <span class="keywordflow">return</span> <a class="code" href="class_terrain_patch.html#a8c4c331e4f49e94ed82f87a9be3a5279">base</a>;</div>
+<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160;</div>
+<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160; <span class="keywordtype">double</span> height = 0;</div>
+<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;</div>
+<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160; x /= <a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a>;</div>
+<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160; z /= <a class="code" href="class_terrain_patch.html#aa31906778e8dec08157370c86cbac279">scale</a>;</div>
+<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;</div>
+<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160; <span class="keywordtype">int</span> x0 = (int) x;</div>
+<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160; <span class="keywordtype">int</span> z0 = (int) z;</div>
+<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;</div>
+<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160; <span class="keywordflow">if</span> (x0 &gt;= 0 &amp;&amp; x0 &lt; PATCH_SIZE &amp;&amp; z0 &gt;= 0 &amp;&amp; z0 &lt; <a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a>) {</div>
+<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160; <span class="keywordtype">double</span> dx = x-x0;</div>
+<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160; <span class="keywordtype">double</span> dz = z-z0;</div>
+<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;</div>
+<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160; <span class="keywordtype">double</span> h[4];</div>
+<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;</div>
+<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160; h[0] = <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[(z0*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + x0)];</div>
+<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160; h[1] = <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[((z0+1)*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + x0)];</div>
+<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160; h[2] = <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[(z0*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + x0+1)];</div>
+<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160; h[3] = <a class="code" href="class_terrain_patch.html#ad4aed55c38320a907582fab760bc6058">heights</a>[((z0+1)*<a class="code" href="_terrain_8cpp.html#a452fd58b0e3c2931d0927755710e9c3b">PATCH_SIZE</a> + x0+1)];</div>
+<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;</div>
+<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160; <span class="comment">// if level, just return height of one vertex:</span></div>
+<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160; <span class="keywordflow">if</span> (h[0] == h[1] &amp;&amp; h[1] == h[2] &amp;&amp; h[2] == h[3]) {</div>
+<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160; height = h[0];</div>
+<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160; }</div>
+<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;</div>
+<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160; <span class="comment">// if sloped, interpolate between vertex heights:</span></div>
+<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160; <span class="keywordflow">else</span> {</div>
+<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160; <span class="keywordtype">double</span> hl = h[0]*(1-dz) + h[1]*dz;</div>
+<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160; <span class="keywordtype">double</span> hr = h[2]*(1-dz) + h[3]*dz;</div>
+<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;</div>
+<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160; height = hl*(1-dx) + hr*dx + 5; <span class="comment">// fudge</span></div>
+<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160; }</div>
+<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160; }</div>
+<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;</div>
+<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160; <span class="keywordflow">if</span> (height &lt; 0)</div>
+<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160; height = 0;</div>
+<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;</div>
+<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160; <span class="keywordflow">return</span> height;</div>
+<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;}</div>
+</div><!-- fragment --></div><!-- contents -->
+</div><!-- doc-content -->
+<!-- start footer part -->
+<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
+ <ul>
+ <li class="navelem"><a class="el" href="dir_ea1b58c809a5070716d7c602998a95b0.html">Stars45</a></li><li class="navelem"><a class="el" href="_terrain_patch_8cpp.html">TerrainPatch.cpp</a></li>
+ <li class="footer">Generated on Thu May 31 2012 16:31:17 for Starshatter_Open by
+ <a href="http://www.doxygen.org/index.html">
+ <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.1 </li>
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