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 "boundingHexahedron.h"
00022 #include "boundingPlane.h"
00023 #include "pointerTo.h"
00024 #include "luse.h"
00025 #include "deletedChain.h"
00026 
00027 class ClipPlaneAttrib;
00028 class OccluderEffect;
00029 
00030 ////////////////////////////////////////////////////////////////////
00031 //       Class : CullPlanes
00032 // Description : This represents the set of clip planes and/or
00033 //               occluders that are definitely in effect for the
00034 //               current node of the CullTraverserData, as well as on
00035 //               all child nodes.  Any clip planes and occluders in
00036 //               this list may be safely culled against.
00037 //
00038 //               This does not include the clip planes that are in
00039 //               effect now, but might later be turned off by a child
00040 //               node, since we can't safely cull against such clip
00041 //               planes.
00042 //
00043 //               The bounding volumes in this object are transformed
00044 //               for each level of the scene graph.
00045 ////////////////////////////////////////////////////////////////////
00046 class EXPCL_PANDA_PGRAPH CullPlanes : public ReferenceCount {
00047 protected:
00048   INLINE CullPlanes();
00049   INLINE CullPlanes(const CullPlanes &copy);
00050   INLINE void operator = (const CullPlanes &copy); 
00051 
00052 public:
00053   INLINE ~CullPlanes();
00054   ALLOC_DELETED_CHAIN(CullPlanes);
00055 
00056   INLINE bool is_empty() const;
00057 
00058   static CPT(CullPlanes) make_empty();
00059   CPT(CullPlanes) xform(const LMatrix4 &mat) const;
00060   CPT(CullPlanes) apply_state(const CullTraverser *trav, 
00061                               const CullTraverserData *data,
00062                               const ClipPlaneAttrib *net_attrib,
00063                               const ClipPlaneAttrib *off_attrib,
00064                               const OccluderEffect *node_effect) const;
00065   CPT(CullPlanes) do_cull(int &result, CPT(RenderState) &state,
00066                           const GeometricBoundingVolume *node_gbv) const;
00067 
00068   CPT(CullPlanes) remove_plane(const NodePath &clip_plane) const;
00069   CPT(CullPlanes) remove_occluder(const NodePath &occluder) const;
00070 
00071   void write(ostream &out) const;
00072 
00073 private:
00074   typedef pmap<NodePath, PT(BoundingPlane) > Planes;
00075   Planes _planes;
00076 
00077   typedef pmap<NodePath, PT(BoundingHexahedron) > Occluders;
00078   Occluders _occluders;
00079 };
00080 
00081 #include "cullPlanes.I"
00082 
00083 #endif
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