Changeset 540 for trunk/VUT/GtpVisibilityPreprocessor/src/X3dExporter.cpp

Timestamp:

01/15/06 04:23:51 (18 years ago)

Author:

mattausch

Message:

 

File:

• trunk/VUT/GtpVisibilityPreprocessor/src/X3dExporter.cpp (modified) (3 diffs)

trunk/VUT/GtpVisibilityPreprocessor/src/X3dExporter.cpp

@@ -1242 +1242 @@
 void X3dExporter::ExportBeam(const Beam &beam, const AxisAlignedBox3 &box)
 {
+        if (beam.mMesh)
+        {
+                ExportMesh(beam.mMesh);
+                return;
+        }
+
         PolygonContainer polys;
         //ExportBox(beam.mBox);
 
-        for (int i = 0; i < beam.mPlanes.size(); ++ i)
-        {
-                Polygon3 *poly = box.CrossSection(beam.mPlanes[i]);
+        const float zfar = 2.0f * Magnitude(box.Diagonal());
+
+        // box should not never remove part of beam polygons
+        Vector3 bmin = beam.mBox.Min() - Vector3(zfar * 2.0);
+        Vector3 bmax = beam.mBox.Max() + Vector3(zfar * 2.0);
+
+        AxisAlignedBox3 bbox(bmin, bmax);
+        Plane3 fplane;
+        fplane.mNormal = -beam.mPlanes[0].mNormal;
+
+        fplane.mD = beam.mPlanes[0].mD - zfar - 1.0f; 
+        
+        vector<Plane3> planes = beam.mPlanes;
+        planes.push_back(fplane);
+
+        for (int i = 0; i < planes.size(); ++ i)
+        {
+                Polygon3 *poly = bbox.CrossSection(planes[i]);
+                if (!poly->Valid(Limits::Small))
+                        DEL_PTR(poly);
                 
-                for (int j = 0; (j < beam.mPlanes.size()) && poly; ++ j)
+                for (int j = 0; (j < planes.size()) && poly; ++ j)
                 {
                         if (j != i)
@@ -1256 +1279 @@
                                 Polygon3 *back = new Polygon3();
                                 
-                                poly->Split(beam.mPlanes[j], *front, *back, Limits::Small);
+                                poly->Split(planes[j], *front, *back, Limits::Small);
                                 DEL_PTR(poly);
                                 DEL_PTR(front);
@@ -1269 +1292 @@
         }
 
-
         ExportPolygons(polys);
         CLEAR_CONTAINER(polys);