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+<div class="title">Shadow.cpp</div> </div>
+</div><!--header-->
+<div class="contents">
+<a href="_shadow_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 nGenEx</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 © 1997-2004. 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: nGenEx.lib</span></div>
+<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> FILE: Shadow.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"> Dynamic Stencil Shadow Volumes</span></div>
+<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">*/</span></div>
+<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div>
+<div class="line"><a name="l00015"></a><span class="lineno"> 15</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="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_shadow_8h.html">Shadow.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="_light_8h.html">Light.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="_solid_8h.html">Solid.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="_scene_8h.html">Scene.h</a>&quot;</span></div>
+<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_video_8h.html">Video.h</a>&quot;</span></div>
+<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
+<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> visible_shadow_volumes = <span class="keyword">false</span>;</div>
+<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
+<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div>
+<div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="class_shadow.html#ab9f840c6b2b85de44a312218d512e9fb"> 26</a></span>&#160;<a class="code" href="class_shadow.html#ab9f840c6b2b85de44a312218d512e9fb">Shadow::Shadow</a>(<a class="code" href="class_solid.html">Solid</a>* s)</div>
+<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;: verts(0), nverts(0), max_verts(0), edges(0), num_edges(0), enabled(true)</div>
+<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;{</div>
+<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <a class="code" href="class_shadow.html#a6b29e438387c929d42fa1010556d7cd3">solid</a> = s;</div>
+<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;</div>
+<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_shadow.html#a6b29e438387c929d42fa1010556d7cd3">solid</a> &amp;&amp; <a class="code" href="class_shadow.html#a6b29e438387c929d42fa1010556d7cd3">solid</a>-&gt;<a class="code" href="class_solid.html#a994ce9964ce1beb66b08265e7f991ac9">GetModel</a>()) {</div>
+<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <a class="code" href="class_model.html">Model</a>* model = <a class="code" href="class_shadow.html#a6b29e438387c929d42fa1010556d7cd3">solid</a>-&gt;<a class="code" href="class_solid.html#a994ce9964ce1beb66b08265e7f991ac9">GetModel</a>();</div>
+<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keywordtype">int</span> npolys = model-&gt;<a class="code" href="class_model.html#af60c1e820d1feef12d095e361e63bc25">NumPolys</a>();</div>
+<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div>
+<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <a class="code" href="class_shadow.html#afd3eb45f0805f7b7f32845e05da59716">max_verts</a> = model-&gt;<a class="code" href="class_model.html#a2eca281d394bec3ac1556b2a5f8fabaa">NumVerts</a>() * 4;</div>
+<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a> = <span class="keyword">new</span>(__FILE__,__LINE__) <a class="code" href="struct_vec3.html">Vec3</a>[<a class="code" href="class_shadow.html#afd3eb45f0805f7b7f32845e05da59716">max_verts</a>];</div>
+<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a> = <span class="keyword">new</span>(__FILE__,__LINE__) WORD[npolys * 6];</div>
+<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; }</div>
+<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;}</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="comment">// +--------------------------------------------------------------------+</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"><a class="code" href="class_shadow.html#a6fed128929e13ea3d3de6e64da074b8a"> 43</a></span>&#160;<a class="code" href="class_shadow.html#a6fed128929e13ea3d3de6e64da074b8a">Shadow::~Shadow</a>()</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"> 45</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>) <span class="keyword">delete</span> [] <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>;</div>
+<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>) <span class="keyword">delete</span> [] <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>;</div>
+<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;}</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;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;</div>
+<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="class_shadow.html#a0179677be8e47b15c57d57893cf93880"> 52</a></span>&#160;<a class="code" href="class_shadow.html#a0179677be8e47b15c57d57893cf93880">Shadow::Reset</a>()</div>
+<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;{</div>
+<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <a class="code" href="class_shadow.html#aea6ab0d8cbf78e6b7239f6f37eb8623a">num_edges</a> = 0;</div>
+<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a> = 0;</div>
+<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;}</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;<span class="comment">// +--------------------------------------------------------------------+</span></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;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00061"></a><span class="lineno"><a class="code" href="class_shadow.html#a8811cc7b1a4633d28d342a924c5af29f"> 61</a></span>&#160;<a class="code" href="class_shadow.html#a8811cc7b1a4633d28d342a924c5af29f">Shadow::Render</a>(<a class="code" href="class_video.html">Video</a>* video)</div>
+<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;{</div>
+<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_shadow.html#a6705448c7af0d19f567c7008543ac9cd">enabled</a>)</div>
+<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; video-&gt;<a class="code" href="class_video.html#a89f4ece161cd6619f424ea24dbe44b6d">DrawShadow</a>(<a class="code" href="class_shadow.html#a6b29e438387c929d42fa1010556d7cd3">solid</a>, <a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>, <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>, visible_shadow_volumes);</div>
+<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;}</div>
+<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div>
+<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment">// +--------------------------------------------------------------------+</span></div>
+<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;</div>
+<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="class_shadow.html#a1b5fa827e5b30ec9a0daf1b783cfb171"> 70</a></span>&#160;<a class="code" href="class_shadow.html#a1b5fa827e5b30ec9a0daf1b783cfb171">Shadow::Update</a>(<a class="code" href="class_light.html">Light</a>* light)</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; <a class="code" href="class_shadow.html#a0179677be8e47b15c57d57893cf93880">Reset</a>();</div>
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+<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;</div>
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+<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">while</span> (++iter) {</div>
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+<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="comment">// transform light location into surface object space</span></div>
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+<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;</div>
+<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordflow">if</span> (!directional)</div>
+<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; tmp -= (<a class="code" href="class_shadow.html#a6b29e438387c929d42fa1010556d7cd3">solid</a>-&gt;<a class="code" href="class_graphic.html#a0b6627c441a7e4e8d5a1ef04bd03880b">Location</a>() + s-&gt;<a class="code" href="class_surface.html#a9a6594940b0c2281c8025bc2835757c6">GetOffset</a>());</div>
+<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div>
+<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; lpos.<a class="code" href="struct_vec3.html#a2814580e9b9372738c0a61197ea46b51">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="l00093"></a><span class="lineno"> 93</span>&#160; lpos.<a class="code" href="struct_vec3.html#abc1d241232cb04aa98217a942402ae68">y</a> = tmp * Vec3(xform(1,0), xform(1,1), xform(1,2));</div>
+<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; lpos.<a class="code" href="struct_vec3.html#a64f3f00cd2dd9076999eeb2f05210388">z</a> = tmp * Vec3(xform(2,0), xform(2,1), xform(2,2));</div>
+<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div>
+<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="comment">// compute the silohuette for the mesh with respect to the light:</span></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">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="l00099"></a><span class="lineno"> 99</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="l00100"></a><span class="lineno"> 100</span>&#160;</div>
+<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="comment">// skip polys with non-shadowing materials:</span></div>
+<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">if</span> (p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a> &amp;&amp; !p-&gt;<a class="code" href="struct_poly.html#adac6649f5a8a049c8da2c0b34b022bd1">material</a>-&gt;<a class="code" href="struct_material.html#a0e8b3aa08dcf57340fea05bbdf05ea4a">shadow</a>)</div>
+<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keywordflow">continue</span>;</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; <span class="comment">// if this poly faces the light:</span></div>
+<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keywordflow">if</span> (p-&gt;<a class="code" href="struct_poly.html#a5be012ca0623a37857a9ab897c6c731d">plane</a>.<a class="code" href="struct_plane.html#a4fca1d30bfad2542c8e38aa32ff13655">normal</a> * lpos &gt; 0) {</div>
+<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = 0; n &lt; p-&gt;<a class="code" href="struct_poly.html#a7c282f5bb936e91855269f710bcbcff7">nverts</a>; n++) {</div>
+<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keywordflow">if</span> (n &lt; p-&gt;<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>-1)</div>
+<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <a class="code" href="class_shadow.html#ad0b8fea8c671ac01a2f9c0d69583bbc8">AddEdge</a>(p-&gt;<a class="code" href="struct_poly.html#a58e80ea7ba4831cbc6384519fd9b728d">vlocs</a>[n], p-&gt;<a class="code" href="struct_poly.html#a58e80ea7ba4831cbc6384519fd9b728d">vlocs</a>[n+1]);</div>
+<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">else</span></div>
+<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <a class="code" href="class_shadow.html#ad0b8fea8c671ac01a2f9c0d69583bbc8">AddEdge</a>(p-&gt;<a class="code" href="struct_poly.html#a58e80ea7ba4831cbc6384519fd9b728d">vlocs</a>[n], p-&gt;<a class="code" href="struct_poly.html#a58e80ea7ba4831cbc6384519fd9b728d">vlocs</a>[0]);</div>
+<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; }</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; }</div>
+<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div>
+<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="comment">// extrude the silohuette away from the light source</span></div>
+<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="comment">// to create the shadow volume:</span></div>
+<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;</div>
+<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; Vec3 extent = lpos * -1;</div>
+<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; extent.<a class="code" href="struct_vec3.html#a269d13893a87a616b6709e5fc3d34d4f">Normalize</a>();</div>
+<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; extent *= 50.0e3f; <span class="comment">//solid-&gt;Radius() * 2.1f;</span></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">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; (int) <a class="code" href="class_shadow.html#aea6ab0d8cbf78e6b7239f6f37eb8623a">num_edges</a>; i++) {</div>
+<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>+6 &lt;= <a class="code" href="class_shadow.html#afd3eb45f0805f7b7f32845e05da59716">max_verts</a>) {</div>
+<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; Vec3 v1 = s-&gt;<a class="code" href="class_surface.html#a9bcc97d3512578e9244226950874b8db">GetVLoc</a>()[<a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+0]];</div>
+<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; Vec3 v2 = s-&gt;<a class="code" href="class_surface.html#a9bcc97d3512578e9244226950874b8db">GetVLoc</a>()[<a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+1]];</div>
+<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; Vec3 v3 = v1 + extent;</div>
+<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; Vec3 v4 = v2 + extent;</div>
+<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;</div>
+<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>[<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>++] = v1;</div>
+<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>[<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>++] = v2;</div>
+<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>[<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>++] = v3;</div>
+<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;</div>
+<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>[<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>++] = v2;</div>
+<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>[<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>++] = v4;</div>
+<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <a class="code" href="class_shadow.html#a1c00b6881850379a53de03b269dec802">verts</a>[<a class="code" href="class_shadow.html#ac6ab4950ed39258a79f65dc84d37c27f">nverts</a>++] = v3;</div>
+<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</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;}</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;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00143"></a><span class="lineno"><a class="code" href="class_shadow.html#ad0b8fea8c671ac01a2f9c0d69583bbc8"> 143</a></span>&#160;<a class="code" href="class_shadow.html#ad0b8fea8c671ac01a2f9c0d69583bbc8">Shadow::AddEdge</a>(WORD v1, WORD v2)</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="comment">// Remove interior edges (which appear in the list twice)</span></div>
+<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">for</span> (DWORD i = 0; i &lt; <a class="code" href="class_shadow.html#aea6ab0d8cbf78e6b7239f6f37eb8623a">num_edges</a>; i++) {</div>
+<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <span class="keywordflow">if</span> ((<a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+0] == v1 &amp;&amp; <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+1] == v2) ||</div>
+<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; (<a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+0] == v2 &amp;&amp; <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+1] == v1))</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; <span class="keywordflow">if</span> (num_edges &gt; 1) {</div>
+<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+0] = <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*(num_edges-1)+0];</div>
+<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*i+1] = edges[2*(num_edges-1)+1];</div>
+<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; }</div>
+<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;</div>
+<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; num_edges--;</div>
+<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keywordflow">return</span>;</div>
+<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; }</div>
+<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; }</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_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*num_edges+0] = v1;</div>
+<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <a class="code" href="class_shadow.html#a01c7d1b56cfe4878ed68432637abc191">edges</a>[2*num_edges+1] = v2;</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; num_edges++;</div>
+<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;}</div>
+<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;</div>
+<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="keywordtype">bool</span></div>
+<div class="line"><a name="l00167"></a><span class="lineno"><a class="code" href="class_shadow.html#a1c3caae51a58c7fa2220cdd94d89f252"> 167</a></span>&#160;<a class="code" href="class_shadow.html#a1c3caae51a58c7fa2220cdd94d89f252">Shadow::GetVisibleShadowVolumes</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; <span class="keywordflow">return</span> visible_shadow_volumes;</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;</div>
+<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="keywordtype">void</span></div>
+<div class="line"><a name="l00173"></a><span class="lineno"><a class="code" href="class_shadow.html#a86c1b9c00636d7e302d527820b3c651e"> 173</a></span>&#160;<a class="code" href="class_shadow.html#a86c1b9c00636d7e302d527820b3c651e">Shadow::SetVisibleShadowVolumes</a>(<span class="keywordtype">bool</span> vis)</div>
+<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;{</div>
+<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; visible_shadow_volumes = vis;</div>
+<div class="line"><a name="l00176"></a><span class="lineno"> 176</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_d6625d0f3efd9eb70ff961583505095b.html">nGenEx</a></li><li class="navelem"><a class="el" href="_shadow_8cpp.html">Shadow.cpp</a></li>
+ <li class="footer">Generated on Tue Jun 5 2012 20:46:29 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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