Changeset 8569 in orxonox.OLD for branches/terrain/src/lib/graphics/importer/terrain/frustum.h

Timestamp:

Jun 18, 2006, 8:26:57 PM (18 years ago)

Author:

ponder

Message:

• The terrain now uses VBO's instead of VARS. Its possible to switch back, though.
• The multitexturing works fine.

File:

• branches/terrain/src/lib/graphics/importer/terrain/frustum.h (modified) (3 diffs)

branches/terrain/src/lib/graphics/importer/terrain/frustum.h

@@ -28 +28 @@
         
 /** 
- * Code borrowed from Lighthouse 3D 
+ * Code borrowed from Lighthouse 3D. Its a very good tutorial on culling.
  */
 class Frustum;
@@ -64 +64 @@
                 {
                         int result = INSIDE;
-                        for(int i=0; i < 6; i++) {
+                        //for each plane do ...
+                        for( int i = 0; i < 6; ++i ) {
 
+                                // is the positive vertex outside?
                                 if ( planes[i].distance( _box.vertexP( planes[i].n ) ) < 0 )
                                         return OUTSIDE;
-                                if ( planes[i].distance( _box.vertexN( planes[i].n) ) < 0 )
-                                        result =  INTERSECT;
+                                // is the negative vertex outside?      
+                                else if ( planes[i].distance( _box.vertexN( planes[i].n ) ) < 0 )
+                                        result = INTERSECT;
                         }
-                        return result;          
+                        return result;
                 }
                 
@@ -78 +81 @@
                         int result = INSIDE;
                         for(int i=0; i < 6; i++) {
-
                                 if (planes[i].distance( _point ) < 0)
                                         return OUTSIDE;