Implemented KRAABB class.

Occlusion culling in progress

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4085

KREngine/KREngine/Classes/KROctree.h

@@ -27,6 +27,8 @@ public:
     KROctreeNode *getRootNode();
     std::set<KRNode *> &getOuterSceneNodes();
     
+    void getOcclusionQueryResults(std::set<KRAABB> &renderedBounds);
+    
 private:
     KROctreeNode *m_pRootNode;
     std::set<KRNode *>m_outerSceneNodes;