Changeset 525 for trunk/VUT/GtpVisibilityPreprocessor/src/GlRenderer.cpp

Timestamp:

01/12/06 14:27:18 (18 years ago)

Author:

mattausch

Message:

 

File:

• trunk/VUT/GtpVisibilityPreprocessor/src/GlRenderer.cpp (modified) (4 diffs)

trunk/VUT/GtpVisibilityPreprocessor/src/GlRenderer.cpp

@@ -53 +53 @@
 static void handleCgError() 
 {
-    fprintf(stderr, "Cg error: %s\n", cgGetErrorString(cgGetError()));
+    Debug << "Cg error: " << cgGetErrorString(cgGetError()) << endl;
     exit(1);
 }
@@ -639 +639 @@
 {
         // 1. setup the view port to match the desired samples
+        glViewport(0, 0, desiredSamples, desiredSamples);
+
         // 2. setup the projection matrix and view matrix to match the viewpoint + beam.mDirBox
-  
+        SetupProjectionForViewPoint(viewPoint, beam, sourceObject);
+        
         // 3. reset z-buffer to 0 and render the source object for the beam
         //    with glCullFace(Enabled) and glFrontFace(GL_CW)
@@ -740 +743 @@
         {
                 glBeginOcclusionQueryNV(sQueries[queryIdx ++]);
-  
+
                 RenderIntersectable(*vit);
-  
+                
                 glEndOcclusionQueryNV();
         }
@@ -785 +788 @@
         }
 }
+
+void GlRendererBuffer::SetupProjectionForViewPoint(const Vector3 &viewPoint, 
+                                                                                                 const Beam &beam, 
+                                                                                                 Intersectable *sourceObject)
+{
+        float left, right, bottom, top, znear, zfar;
+
+        beam.ComputeFrustum(left, right, bottom, top, znear, zfar,
+                                                mSceneGraph->GetBox());
+
+        glFrustum(left, right, bottom, top, znear, zfar);
+
+    const Vector3 eye = viewPoint + beam.GetMainDirection;
+        const Vector3 up = AbitraryNormal(eye);
+
+        gluLookAt(eye, viewPoint, up);
+}