Changeset 545 for trunk/VUT/GtpVisibilityPreprocessor/src/ViewCellBsp.cpp

Timestamp:

01/17/06 00:28:06 (18 years ago)

Author:

mattausch

Message:

 

File:

• trunk/VUT/GtpVisibilityPreprocessor/src/ViewCellBsp.cpp (modified) (3 diffs)

trunk/VUT/GtpVisibilityPreprocessor/src/ViewCellBsp.cpp

@@ -1167 +1167 @@
 }
 
+
 Plane3 BspTree::SelectPlane(BspLeaf *leaf, BspTraversalData &data)
 {
@@ -1553 +1554 @@
         }
                         
-        bool useRand;;
+        bool useRand;
         int limit;
 
@@ -2559 +2560 @@
         PolygonContainer::const_iterator pit, pit_end = mPolys.end();
 
+        // note: can take arbitrary point, e.g., the origin. However,
+        // center of mass prevents precision errors
+        const Vector3 center = CenterOfMass();
+
         for (pit = mPolys.begin(); pit != pit_end; ++ pit)
         {
                 Polygon3 *poly = *pit;
-                const Vector3 v = poly->mVertices[0];
+                const Vector3 v0 = poly->mVertices[0] - center;
 
                 for (int i = 1; i < (int)poly->mVertices.size() - 1; ++ i)
                 {
-                        volume += f * (DotProd(v, 
-                                CrossProd(poly->mVertices[i], poly->mVertices[i + 1])));
-                }
-        }
-
-        Debug << "volume: " << volume << endl;
+                        const Vector3 v1 = poly->mVertices[i] - center;
+                        const Vector3 v2 = poly->mVertices[i + 1] - center;
+
+                        volume += f * (DotProd(v0, CrossProd(v1, v2)));
+                }
+        }
+
         return volume;
 }
 
 
-Vector3 BspNodeGeometry::ComputeMassCenter() const
+Vector3 BspNodeGeometry::CenterOfMass() const
 {
         int n = 0;