Changeset 639 for GTP/trunk/Lib/Vis/Preprocessing/src/RayInfo.cpp

Timestamp:

02/14/06 17:13:42 (18 years ago)

Author:

mattausch

Message:

 

File:

• GTP/trunk/Lib/Vis/Preprocessing/src/RayInfo.cpp (modified) (2 diffs)

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

@@ -106 +106 @@
                 mMaxT = t; 
         }
-        
 #endif 
+
 
 int RayInfo::ComputeRayIntersection(const int axis, const float position, float &t) const
@@ -133 +133 @@
 {       
         t = splitPlane.FindT(mRay->GetOrigin(), mRay->GetTermination());
-//      Debug << "t: " << t << " mint " << GetMinT() << " maxt " << GetMaxT() << 
-//      " orig: " << mRay->GetOrigin() << " term " << mRay->GetTermination() << endl;
+
+        if (0)
+                Debug << "t: " << t << " mint " << GetMinT() << " maxt " << GetMaxT() 
+                      << " orig: " << mRay->GetOrigin() << " term " << mRay->GetTermination() << endl;
 
         // NOTE: if plane equals end point of ray, the ray should be classified
         // non-intersecting, otherwise polygon-plane intersections of bsp tree
         // approaches are not eliminating any rays intersecting the polygon!
-#if 1
-        if (t >= GetMaxT() - 1e-20)
+        const float thresh = 1 ? 1e-6f : 0.0f;
+
+        // segment is not intersecting plane: fond out if on front or back side
+        if (t >= GetMaxT() - thresh)
+        {
                 return splitPlane.Side(ExtrapOrigin());
-        if (t <= GetMinT() + 1e-20)
+        }
+                
+        if (t <= GetMinT() + thresh)
+        {
                 return splitPlane.Side(ExtrapTermination());
-#else
-        if (t > GetMaxT())
-                return splitPlane.Side(ExtrapOrigin());
-        else if (t < GetMinT())
-                return splitPlane.Side(ExtrapTermination());
-#endif
+        }
+        
         return 0;
 }
+
 
 float RayInfo::SegmentLength() const