Changeset 2933

Timestamp:

09/12/08 10:39:52 (16 years ago)

Author:

mattausch

Message:

 

Location:

GTP/trunk/App/Demos/Vis/FriendlyCulling/src

Files:

• Matrix4x4.cpp (modified) (1 diff)
• RenderState.cpp (modified) (1 diff)
• ShadowMapping.cpp (modified) (16 diffs)

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/Matrix4x4.cpp

@@ -748 +748 @@
         Vector3 position = m * -pos;
         
-        // note: left handet system => we go into positive z
+        // note: left handed system => we go into positive z
         m.x[3][0] = position.x;
         m.x[3][1] = position.y;

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/RenderState.cpp

@@ -89 +89 @@
         {
                 mCullFaceEnabled = true;
-                glEnable(GL_CULL_FACE);
+                //glEnable(GL_CULL_FACE);
         }
 

GTP/trunk/App/Demos/Vis/FriendlyCulling/src/ShadowMapping.cpp

@@ -223 +223 @@
         //-- first find the free parameter values n, and P (the projection center), and the projection depth
 
-        const float n = 1e2f;
+        const float n = 1e3f;
         //const float n = 1e6f;
         //const float n = ComputeN(bounds_ls) * 100;
@@ -230 +230 @@
 
         const Vector3 nearPt = GetNearCameraPointE(body);
-        const float dummy = 0;
+        
         //get the coordinates of the near camera point in light space
         const Vector3 lsNear = lightSpace * nearPt;
@@ -249 +249 @@
 
         // light space y size
-        const float d = fabs(bounds_ls.Max()[2] - bounds_ls.Min()[2])+dummy;
+        const float d = fabs(bounds_ls.Max()[2] - bounds_ls.Min()[2]);
 
         const float dy = fabs(bounds_ls.Max()[1] - bounds_ls.Min()[1]);
@@ -263 +263 @@
         Matrix4x4 matLispSM;
         
-        matLispSM = GetFrustum(-1.0, 1.0, -1.0, 1.0, n+dummy, n + d);
+        matLispSM = GetFrustum(-1.0, 1.0, -1.0, 1.0, n, n + d);
 
         //cout << "lispsm\n" << matLispSM << endl;
@@ -310 +310 @@
         }
 
-        //      Invert(eyeView); return eyeView * nearest;
+        //      return Invert(eyeView) * nearest;
         return nearest;
 }
@@ -346 +346 @@
 #endif
 
-Vector3 ShadowMap::GetProjViewDir(const Matrix4x4 &lightSpace, const VertexArray &pts) const 
+Vector3 ShadowMap::GetProjViewDir(const Matrix4x4 &lightSpace, 
+                                                                  const VertexArray &pts) const 
 {
         //get the point in the LVS volume that is nearest to the camera
@@ -359 +360 @@
         Vector3 projDir(b_lp - e_lp);
 
-        Matrix4x4 dummy = lightSpace;
+        Matrix4x4 dummy = Invert(lightSpace);
         Invert(dummy);
         Vector3 dummyVec = dummy * e_lp;
@@ -412 +413 @@
 
         //switch to the lightspace used in the article
-        //lightProj = lightProj * transform2LispSM;
+        lightProj = lightProj * transform2LispSM;
 
         const Vector3 projViewDir = GetProjViewDir(lightView * lightProj, frustumPoints);
@@ -418 +419 @@
 
         cout << "projViewDir: " << projViewDir << " orig " << mCamera->GetDirection() << endl;
-
+                                                                
         //do Light Space Perspective shadow mapping
         //rotate the lightspace so that the projected light view always points upwards
@@ -424 +425 @@
         //look(from position, into the direction of the projected direction, with unchanged up-vector)
         const Matrix4x4 frame = MyLookAt(Vector3::ZERO(), projViewDir, Vector3::UNIT_Y());
+        //const Matrix4x4 frame = MyLookAt(Vector3::ZERO(), projViewDir, Vector3::UNIT_Z());
 
         cout << "frame\n " << frame << endl;
-        //lightProj = lightProj * frame;
+        lightProj = lightProj * frame;
 
         cout << "here9\n" << lightProj << endl;
@@ -443 +445 @@
         transformToGL.x[3][3] =  1.0f;
 
-        //lightProj = lightProj * transformToGL;
+        lightProj = lightProj * transformToGL;
         //cout << "here4 \n" << lightProj << endl;
 
@@ -562 +564 @@
 
         Vector3 upVec = CalcUpVec(mCamera->GetDirection(), dir);
-        Matrix4x4 lightView = 
-                MyLookAt(mShadowCam->GetPosition(), dir, upVec);
+        Matrix4x4 lightView = MyLookAt(mShadowCam->GetPosition(), -dir, -upVec);
+        //Matrix4x4 lightView = MyLookAt(mShadowCam->GetPosition(), dir, mCamera->GetDirection());
 
         mShadowCam->mViewOrientation = lightView;
@@ -601 +603 @@
 
         mLightProjView = lightView * lightProj;
-
+glEnable(GL_CULL_FACE);
         cout << "here3" << endl;
         DEL_PTR(lightPoly);
@@ -674 +676 @@
 
         Vector3 upVec = CalcUpVec(mCamera->GetDirection(), dir);
-        Matrix4x4 lightView = MyLookAt(mShadowCam->GetPosition(), dir, upVec);
+        Matrix4x4 lightView = MyLookAt(mShadowCam->GetPosition(), -dir, -upVec);
+        //Matrix4x4 lightView = Invert(_lightView);
+        //Matrix4x4 lightView = MyLookAt(mShadowCam->GetPosition(), dir, mCamera->GetDirection());
 
         mShadowCam->mViewOrientation = lightView;
@@ -706 +710 @@
         glPushMatrix();
         glLoadIdentity();
+
+        glDisable(GL_CULL_FACE);
 
         mShadowCam->SetupCameraView();
@@ -722 +728 @@
         glDisable(GL_DEPTH_TEST);
         glDepthMask(GL_FALSE);
-        glDisable(GL_CULL_FACE);
 
         Polyhedron *hpoly = CreatePolyhedron(projView, mSceneBox);