Changeset 1824 for GTP/trunk/Lib/Vis/Preprocessing/src/SamplingStrategy.cpp

Timestamp:

11/28/06 19:46:36 (18 years ago)

Author:

bittner

Message:

global lines support

File:

• GTP/trunk/Lib/Vis/Preprocessing/src/SamplingStrategy.cpp (modified) (1 diff)

GTP/trunk/Lib/Vis/Preprocessing/src/SamplingStrategy.cpp

@@ -386 +386 @@
 }
 
-}
-
-
+
+bool
+GlobalLinesDistribution::GenerateSample(SimpleRay &ray) const
+{
+        Vector3 origin, termination, direction; 
+        
+        origin = mPreprocessor.mViewCellsManager->GetViewSpaceBox().GetRandomSurfacePoint();
+
+        termination = mPreprocessor.mViewCellsManager->GetViewSpaceBox().GetRandomSurfacePoint();
+        
+        direction = termination - origin;
+        //direction = UniformRandomVector();
+
+
+        // $$ jb the pdf is yet not correct for all sampling methods!
+        const float c = Magnitude(direction);
+        if (c <= Limits::Small) 
+                return false;
+        
+        
+        direction *= 1.0f / c;
+        
+        // a little offset
+        //      origin += direction * 0.001f;
+        
+        // $$ jb the pdf is yet not correct for all sampling methods!
+        const float pdf = 1.0f;
+
+        ray = SimpleRay(origin, direction, pdf);
+        ray.mType = Ray::GLOBAL_RAY;
+        return true;
+}
+
+}
+
+