Changeset 2919 for GTP/trunk/App/Demos/Vis/FriendlyCulling/src/ShadowMapping.cpp

Timestamp:

09/08/08 17:32:16 (16 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/App/Demos/Vis/FriendlyCulling/src/ShadowMapping.cpp (modified) (2 diffs)

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

@@ -224 +224 @@
 
 
+Vector3 ShadowMap::GetProjViewDir(const Matrix4x4 &lightSpace) const 
+{
+        //get the point in the LVS volume that is nearest to the camera
+        const V3 e = getNearCameraPointE(fs);
+        //construct edge to transform into light-space
+        const V3 b = e+fs.getEyeDir();
+        //transform to light-space
+        const V3 e_lp = lightSpace.mulHomogenPoint(e);
+        const V3 b_lp = lightSpace.mulHomogenPoint(b);
+        V3 projDir(b_lp-e_lp);
+        //project the view direction into the shadow map plane
+        projDir.y() = 0.0;
+        return projDir;
+}
+
+
 bool ShadowMap::CalcLightProjection(Matrix4x4 &lightProj)
 {
@@ -267 +283 @@
         mShadowCam->GetModelViewMatrix(shadowView);
 
+        Vector3 projViewDir = 
         //do Light Space Perspective shadow mapping
         //rotate the lightspace so that the proj light view always points upwards
         //calculate a frame matrix that uses the projViewDir[light-space] as up vector
         //look(from position, into the direction of the projected direction, with unchanged up-vector)
-        //lightProj = Math::look<REAL>(M4(),V3::ZERO(),projViewDir,V3::UNIT_Y())*lightProj
+        Matrix4x4 frame = LookAt(Vector3(0), projViewDir, Vector3(0, 0, 1));
+        lightProj *= frame;
 
         const Matrix4x4 matLispSM =