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+/* Starshatter OpenSource Distribution
+ Copyright (c) 1997-2004, Destroyer Studios LLC.
+ All Rights Reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+ * Neither the name "Destroyer Studios" nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+
+ SUBSYSTEM: Magic.exe
+ FILE: ModelView.cpp
+ AUTHOR: John DiCamillo
+
+
+ OVERVIEW
+ ========
+ Implementation of the ModelView class
+*/
+
+#include "stdafx.h"
+#include "Magic.h"
+
+#include "MagicDoc.h"
+#include "ModelView.h"
+#include "Grid.h"
+#include "Selector.h"
+#include "Selection.h"
+
+#include "ActiveWindow.h"
+#include "Color.h"
+#include "Light.h"
+#include "Scene.h"
+#include "Screen.h"
+#include "Shadow.h"
+#include "Solid.h"
+#include "Video.h"
+
+DWORD GetRealTime();
+
+#ifdef _DEBUG
+#define new DEBUG_NEW
+#undef THIS_FILE
+static char THIS_FILE[] = __FILE__;
+#endif
+
+static ModelView* views[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+// +--------------------------------------------------------------------+
+
+ModelView::ModelView(Window* c, Scene* s, DWORD m)
+ : CameraView(c, 0, s), view_mode(100), fill_mode(FILL_WIRE),
+ grid(0), az(-PI/4), el(PI/4)
+{
+ UseCamera(&cam);
+ SetViewMode(m);
+}
+
+ModelView::~ModelView()
+{
+ if (views[view_mode] == this)
+ views[view_mode] = 0;
+}
+
+// +--------------------------------------------------------------------+
+
+void
+ModelView::SetViewMode(DWORD m)
+{
+ if (view_mode != m) {
+ view_mode = m;
+
+ double x = 1e3 * sin(az) * cos(el);
+ double y = 1e3 * cos(az) * cos(el);
+ double z = 1e3 * sin(el);
+
+ switch (view_mode) {
+ case VIEW_PLAN:
+ cam.LookAt(Point(0,0,0),
+ Point(0,1e3,0),
+ Point(0,0,1));
+ SetProjectionType(Video::PROJECTION_ORTHOGONAL);
+ SetFieldOfView(1.75);
+ break;
+
+ case VIEW_FRONT:
+ cam.LookAt(Point(0,0,0),
+ Point(0,0,1e3),
+ Point(0,1,0));
+ SetProjectionType(Video::PROJECTION_ORTHOGONAL);
+ SetFieldOfView(1.75);
+ break;
+
+ case VIEW_SIDE:
+ cam.LookAt(Point(0,0,0),
+ Point(1e3,0,0),
+ Point(0,1,0));
+ SetProjectionType(Video::PROJECTION_ORTHOGONAL);
+ SetFieldOfView(1.75);
+ break;
+
+ case VIEW_PROJECT:
+ cam.LookAt(Point(0,0,0),
+ Point(x,z,y),
+ Point(0,1,0));
+ SetProjectionType(Video::PROJECTION_PERSPECTIVE);
+ SetFieldOfView(1.75);
+ break;
+ }
+
+ views[view_mode] = this;
+ }
+}
+
+ModelView*
+ModelView::FindView(DWORD mode)
+{
+ if (mode >= 0 && mode < 8)
+ return views[mode];
+
+ return 0;
+}
+
+// +--------------------------------------------------------------------+
+
+void
+ModelView::MoveTo(Point pos)
+{
+ switch (view_mode) {
+ case VIEW_PLAN:
+ cam.LookAt( pos - Point(0,1e3,0),
+ pos,
+ Point(0,0,1));
+ break;
+
+ case VIEW_FRONT:
+ cam.LookAt( pos - Point(0,0,1e3),
+ pos,
+ Point(0,1,0));
+ break;
+
+ case VIEW_SIDE:
+ cam.LookAt( pos - Point(1e3,0,0),
+ pos,
+ Point(0,1,0));
+ break;
+ }
+}
+
+void
+ModelView::MoveBy(double dx, double dy)
+{
+ Point pos = cam.Pos();
+
+ dx *= 2.00/GetFieldOfView();
+ dy *= 2.00/GetFieldOfView();
+
+ switch (view_mode) {
+ case VIEW_PLAN:
+ pos.x -= dx;
+ pos.z += dy;
+
+ cam.LookAt( pos - Point(0,1e3,0),
+ pos,
+ Point(0,0,1));
+ break;
+
+ case VIEW_FRONT:
+ pos.x += dx;
+ pos.y += dy;
+
+ cam.LookAt( pos - Point(0,0,1e3),
+ pos,
+ Point(0,1,0));
+ break;
+
+ case VIEW_SIDE:
+ pos.z -= dx;
+ pos.y += dy;
+
+ cam.LookAt( pos - Point(1e3,0,0),
+ pos,
+ Point(0,1,0));
+ break;
+ }
+}
+
+void
+ModelView::SpinBy(double phi, double theta)
+{
+ const double limit = (0.43 * PI);
+
+ Point pos = cam.Pos();
+ double len = pos.length();
+
+ az += phi;
+ el += theta;
+
+ if (az > PI)
+ az = -2*PI + az;
+
+ else if (az < -PI)
+ az = 2*PI + az;
+
+ if (el > limit)
+ el = limit;
+ else if (el < -limit)
+ el = -limit;
+
+ double x = len * sin(az) * cos(el);
+ double y = len * cos(az) * cos(el);
+ double z = len * sin(el);
+
+ cam.LookAt(Point(0,0,0), Point(x,z,y), Point(0,1,0));
+}
+
+void
+ModelView::UseGrid(Grid* g)
+{
+ grid = g;
+}
+
+void
+ModelView::ZoomNormal()
+{
+ DWORD v = view_mode; // remember current view mode
+ view_mode = 100; // force set view mode to setup the view
+ az = -PI/4; // if this happens to be a perspective view,
+ el = PI/4; // reset the spin to the original 3/4ths view
+
+ SetViewMode(v); // restore default view params for this mode
+}
+
+// +--------------------------------------------------------------------+
+
+void
+ModelView::RenderScene()
+{
+ // activate all lights:
+ ListIter<Light> light_iter = scene->Lights();
+
+ while (++light_iter) {
+ Light* light = light_iter.value();
+ light->SetActive(true);
+ }
+
+ video->SetLights(scene->Lights());
+
+ RenderGrid();
+
+
+ bool old_shadows = video->IsShadowEnabled();
+ bool old_bumps = video->IsBumpMapEnabled();
+
+ if (fill_mode != FILL_TEXTURE) {
+ video->SetShadowEnabled(false);
+ video->SetBumpMapEnabled(false);
+ CameraView::RenderScene();
+ }
+
+ else {
+ CameraView::RenderScene();
+ }
+
+ const char* title = "ModelView";
+ switch (view_mode) {
+ case VIEW_PLAN: title = "Top"; break;
+ case VIEW_FRONT: title = "Front"; break;
+ case VIEW_SIDE: title = "Right Side"; break;
+ case VIEW_PROJECT: title = "Perspective"; break;
+ }
+
+ int len = strlen(title);
+ Rect r(6,4,200,20);
+
+ r.x += window->GetRect().x;
+ r.y += window->GetRect().y;
+
+ video->DrawText(title, len, r, DT_LEFT|DT_SINGLELINE, Color::Black);
+
+ r.x--;
+ r.y--;
+
+ video->DrawText(title, len, r, DT_LEFT|DT_SINGLELINE, Color::White);
+ video->SetShadowEnabled(old_shadows);
+ video->SetBumpMapEnabled(old_bumps);
+}
+
+// +--------------------------------------------------------------------+
+
+void
+ModelView::Render(Graphic* g, DWORD flags)
+{
+ if (!g)
+ return;
+
+ if (!strcmp(g->Name(), "Selector")) {
+ Selector* selector = (Selector*) g;
+
+ if (selector->GetViewMode() != (int) view_mode)
+ return;
+ }
+
+ else if (!strcmp(g->Name(), "Selection")) {
+ Selection* selection = (Selection*) g;
+ selection->UseView(this);
+ }
+
+ if (fill_mode == FILL_WIRE) {
+ Material m;
+ video->UseMaterial(&m);
+ video->SetRenderState(Video::Z_ENABLE, FALSE);
+
+ if (g->IsSolid()) {
+ m.Kd = ColorValue(0.0f, 0.0f, 0.0f, 0.5f);
+ m.Ke = ColorValue(0.8f, 0.8f, 0.9f, 1.0f);
+ m.blend = Video::BLEND_ALPHA;
+ m.luminous = true;
+
+ video->SetRenderState(Video::FILL_MODE, Video::FILL_SOLID);
+ g->Render(video, flags);
+ }
+
+ m.Ka = Color::Black;
+ m.Kd = Color::Black;
+ m.Ks = Color::Black;
+ m.Ke = Color::Black;
+ m.blend = Video::BLEND_SOLID;
+
+ video->SetRenderState(Video::FILL_MODE, Video::FILL_WIREFRAME);
+
+ g->Render(video, flags);
+ video->UseMaterial(0);
+ }
+
+ else if (fill_mode == FILL_SOLID) {
+ if (g->IsSolid() && flags != Graphic::RENDER_SOLID)
+ return;
+
+ Material m;
+ video->UseMaterial(&m);
+ video->SetRenderState(Video::Z_ENABLE, TRUE);
+
+ m.Kd = ColorValue(0.5f, 0.5f, 0.5f, 1.0f);
+ m.blend = Video::BLEND_SOLID;
+
+ video->SetRenderState(Video::FILL_MODE, Video::FILL_SOLID);
+
+ if (g->IsSolid()) {
+ MarkVisibleLights(g, flags);
+ video->SetLights(scene->Lights());
+ }
+
+ g->Render(video, flags);
+ video->UseMaterial(0);
+ }
+
+ else if (fill_mode == FILL_TEXTURE) {
+ video->SetRenderState(Video::Z_ENABLE, TRUE);
+ video->UseMaterial(0);
+
+ if (g->IsSolid()) {
+ MarkVisibleLights(g, flags);
+ video->SetLights(scene->Lights());
+ }
+
+ g->Render(video, flags);
+ }
+}
+
+void
+ModelView::RenderGrid()
+{
+ if (!grid || !grid->IsShow())
+ return;
+
+ int plane = Grid::GRID_XZ;
+
+ if (view_mode == VIEW_FRONT)
+ plane = Grid::GRID_XY;
+
+ else if (view_mode == VIEW_SIDE)
+ plane = Grid::GRID_YZ;
+
+ grid->ShowPlane(plane);
+ grid->MoveTo(camera_loc * -1);
+ grid->ShowReference(view_mode != VIEW_PROJECT);
+ grid->Render(video, Graphic::RENDER_SOLID);
+
+ video->SetRenderState(Video::Z_ENABLE, TRUE);
+ video->SetRenderState(Video::LIGHTING_ENABLE, TRUE);
+ video->UseMaterial(0);
+}
+
+// +--------------------------------------------------------------------+
+
+CPoint
+ModelView::ProjectPoint(Vec3& p)
+{
+ CPoint result;
+
+ switch (view_mode) {
+ case VIEW_PLAN:
+ case VIEW_FRONT:
+ case VIEW_SIDE:
+ case VIEW_PROJECT: {
+ Vec3 pt = p;
+ projector.Transform(pt);
+ projector.Project(pt, false);
+
+ result.x = (LONG) (pt.x + GetWindow()->X());
+ result.y = (LONG) (pt.y + GetWindow()->Y());
+ }
+ break;
+
+ default:
+ result.x = 0;
+ result.y = 0;
+ break;
+ }
+
+ return result;
+}
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