Add torus shadow render example.

examples/RenderingExamples/TinyRendererSetup.cpp

@@ -154,6 +154,7 @@ TinyRendererSetup::TinyRendererSetup(struct GUIHelperInterface* gui)
     
 	const char* fileName = "textured_sphere_smooth.obj";
     fileName = "cube.obj";
+    fileName = "torus/torus_with_plane.obj";
 
 	{
 		
@@ -342,7 +343,44 @@ void TinyRendererSetup::stepSimulation(float deltaTime)
         render->getActiveCamera()->getCameraViewMatrix(viewMat);
         render->getActiveCamera()->getCameraProjectionMatrix(projMat);
             
+        for (int o=0;o<this->m_internalData->m_renderObjects.size();o++)
+        {
             
+            const btTransform& tr = m_internalData->m_transforms[o];
+            tr.getOpenGLMatrix(modelMat2);
+            
+            
+            for (int i=0;i<4;i++)
+            {
+                for (int j=0;j<4;j++)
+                {
+                    m_internalData->m_renderObjects[o]->m_modelMatrix[i][j] = float(modelMat2[i+4*j]);
+                    m_internalData->m_renderObjects[o]->m_viewMatrix[i][j] = viewMat[i+4*j];
+                    m_internalData->m_renderObjects[o]->m_projectionMatrix[i][j] = projMat[i+4*j];
+                    
+                    btVector3 lightDirWorld;
+                    switch (m_app->getUpAxis())
+                    {
+                        case 1:
+                            lightDirWorld = btVector3(-50.f,100,30);
+                            break;
+                        case 2:
+                            lightDirWorld = btVector3(-50.f,30,100);
+                            break;
+                        default:{}
+                    };
+                    
+                    m_internalData->m_renderObjects[o]->m_lightDirWorld = lightDirWorld.normalized();
+                    
+                    btVector3 lightColor(1.0,1.0,1.0);
+                    m_internalData->m_renderObjects[o]->m_lightColor = lightColor;
+                    
+                    m_internalData->m_renderObjects[o]->m_lightDistance = 10.0;
+                    
+                }
+            }
+            TinyRenderer::renderObjectDepth(*m_internalData->m_renderObjects[o]);
+        }
         
         for (int o=0;o<this->m_internalData->m_renderObjects.size();o++)
         {
@@ -376,6 +414,8 @@ void TinyRendererSetup::stepSimulation(float deltaTime)
                     btVector3 lightColor(1.0,1.0,1.0);
                     m_internalData->m_renderObjects[o]->m_lightColor = lightColor;
                     
+                    m_internalData->m_renderObjects[o]->m_lightDistance = 10.0;
+					
                 }
             }
             TinyRenderer::renderObject(*m_internalData->m_renderObjects[o]);

examples/TinyRenderer/our_gl.cpp

@@ -8,18 +8,6 @@ IShader::~IShader() {}
 
 Matrix viewport(int x, int y, int w, int h) 
 {
-    /*
-    Matrix Viewport;
-    Viewport = Matrix::identity();
-    Viewport[0][3] = x+w/2.f;
-    Viewport[1][3] = y+h/2.f;
-    Viewport[2][3] = 1.f;
-    Viewport[0][0] = w/2.f;
-    Viewport[1][1] = h/2.f;
-    Viewport[2][2] = 0;
-    return Viewport;
-    */
-    
     Matrix Viewport;
     Viewport = Matrix::identity();
     Viewport[0][3] = x+w/2.f;
@@ -29,7 +17,6 @@ Matrix viewport(int x, int y, int w, int h)
     Viewport[1][1] = h/2.f;
     Viewport[2][2] = .5f;
     return Viewport;
-
 }
 
 Matrix projection(float coeff) {
@@ -40,23 +27,6 @@ Matrix projection(float coeff) {
 }
 
 Matrix lookat(Vec3f eye, Vec3f center, Vec3f up) {
-    /*
-    Vec3f z = (eye-center).normalize();
-    Vec3f x = cross(up,z).normalize();
-    Vec3f y = cross(z,x).normalize();
-    Matrix Minv = Matrix::identity();
-    Matrix Tr   = Matrix::identity();
-    for (int i=0; i<3; i++) {
-        Minv[0][i] = x[i];
-        Minv[1][i] = y[i];
-        Minv[2][i] = z[i];
-        Tr[i][3] = -center[i];
-    }
-    Matrix ModelView;
-    ModelView = Minv*Tr;
-    return ModelView;
-    */
-    
     Vec3f f = (center - eye).normalize();
     Vec3f u = up.normalize();
     Vec3f s = cross(f,u).normalize();
@@ -85,7 +55,6 @@ Matrix lookat(Vec3f eye, Vec3f center, Vec3f up) {
     ModelView[3][3] = 1.f;
     
     return ModelView;
-    
 }
 
 Vec3f barycentric(Vec2f A, Vec2f B, Vec2f C, Vec2f P) {
@@ -113,7 +82,6 @@ void triangle(mat<4,3,float> &clipc, IShader &shader, TGAImage &image, float *zb
 	if (pts[0][3]<0 || pts[1][3] <0 || pts[2][3] <0)
 		return;
 
-	
 	mat<3,2,float> pts2;
     for (int i=0; i<3; i++) pts2[i] = proj<2>(pts[i]/pts[i][3]);
 
@@ -128,15 +96,11 @@ void triangle(mat<4,3,float> &clipc, IShader &shader, TGAImage &image, float *zb
         }
     }
 
-	
-	
 	Vec2i P;
     TGAColor color;
     for (P.x=bboxmin.x; P.x<=bboxmax.x; P.x++) {
         for (P.y=bboxmin.y; P.y<=bboxmax.y; P.y++) {
             Vec3f bc_screen  = barycentric(pts2[0], pts2[1], pts2[2], P);
-
-			
             Vec3f bc_clip    = Vec3f(bc_screen.x/pts[0][3], bc_screen.y/pts[1][3], bc_screen.z/pts[2][3]);
             bc_clip = bc_clip/(bc_clip.x+bc_clip.y+bc_clip.z);
             float frag_depth = -1*(clipc[2]*bc_clip);