Changeset 704 for GTP/trunk/Lib/Vis/Preprocessing/src/ViewCellBsp.cpp

Timestamp:

03/16/06 15:04:03 (18 years ago)

Author:

mattausch

Message:

implemented first version of the visibility filter

File:

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

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

@@ -2951 +2951 @@
 int BspNodeGeometry::ComputeIntersection(const AxisAlignedBox3 &box) const
 {
-        AxisAlignedBox3 boundingBox;
-        GetBoundingBox(boundingBox);
-
-        const bool overlap = Overlap(boundingBox, box);
-
-        // no intersections with bounding box
-        if (!overlap)
-        {
-                return 1;
-        }
-        int result = -1;
-
         // 1: box does not intersect geometry
         // 0: box intersects geometry
         // -1: box contains geometry
-        for (int i = 0; i < 6; ++ i) 
+
+        AxisAlignedBox3 boundingBox;
+        GetBoundingBox(boundingBox);
+
+        // no intersections with bounding box
+        if (!Overlap(box, boundingBox))
+        {
+                return 1;
+        }
+
+        // box cotains bounding box of geometry >=> contains geometry
+        if (box.Includes(boundingBox))
+                return -1;
+
+        int result = 0;
+
+        // test geometry planes for intersections
+        vector<Plane3>::const_iterator it, it_end = mPlanes.end();
+
+        for (it = mPlanes.begin(); it != it_end; ++ it)
         {               
-                const int side = Side(box.GetPlane(i));
+                const int side = box.Side(*it);
                 
                 // box does not intersects geometry
                 if (side == 1)
+                {
                         return 1;
-
-                if (side == 0)
-            result = 0;
+                }
+                //if (side == 0) result = 0;
   }