Panda3D

cullPlanes.h

00001 // Filename: cullPlanes.h
00002 // Created by:  drose (23Aug05)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef CULLPLANES_H
00016 #define CULLPLANES_H
00017 
00018 #include "pandabase.h"
00019 #include "referenceCount.h"
00020 #include "nodePath.h"
00021 #include "clipPlaneAttrib.h"
00022 #include "boundingPlane.h"
00023 #include "pointerTo.h"
00024 #include "luse.h"
00025 #include "deletedChain.h"
00026 
00027 ////////////////////////////////////////////////////////////////////
00028 //       Class : CullPlanes
00029 // Description : This represents the set of clip planes that are
00030 //               definitely in effect for the current node of the
00031 //               CullTraverserData, as well as on all child nodes.
00032 //               Any clip planes in this list may be safely culled
00033 //               against.
00034 //
00035 //               This does not include the clip planes that are in
00036 //               effect now, but might later be turned off by a child
00037 //               node, since we can't safely cull against such clip
00038 //               planes.
00039 //
00040 //               The bounding volumes in this object are transformed
00041 //               for each level of the scene graph.
00042 ////////////////////////////////////////////////////////////////////
00043 class EXPCL_PANDA_PGRAPH CullPlanes : public ReferenceCount {
00044 protected:
00045   INLINE CullPlanes();
00046   INLINE CullPlanes(const CullPlanes &copy);
00047   INLINE void operator = (const CullPlanes &copy); 
00048 
00049 public:
00050   INLINE ~CullPlanes();
00051   ALLOC_DELETED_CHAIN(CullPlanes);
00052 
00053   INLINE bool is_empty() const;
00054 
00055   static CPT(CullPlanes) make_empty();
00056   CPT(CullPlanes) xform(const LMatrix4f &mat) const;
00057   CPT(CullPlanes) apply_state(const CullTraverser *trav, 
00058                               const CullTraverserData *data,
00059                               const ClipPlaneAttrib *net_attrib,
00060                               const ClipPlaneAttrib *off_attrib) const;
00061   CPT(CullPlanes) do_cull(int &result, CPT(RenderState) &state,
00062                           const GeometricBoundingVolume *node_gbv) const;
00063 
00064   CPT(CullPlanes) remove_plane(const NodePath &clip_plane) const;
00065 
00066   void write(ostream &out) const;
00067 
00068 private:
00069   typedef pmap<NodePath, PT(BoundingPlane) > Planes;
00070   Planes _planes;
00071 };
00072 
00073 #include "cullPlanes.I"
00074 
00075 #endif
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