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intersectionBoundingVolume.h
00001 // Filename: intersectionBoundingVolume.h
00002 // Created by:  drose (08Feb12)
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 INTERSECTIONBOUNDINGVOLUME_H
00016 #define INTERSECTIONBOUNDINGVOLUME_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "geometricBoundingVolume.h"
00021 #include "pvector.h"
00022 
00023 ////////////////////////////////////////////////////////////////////
00024 //       Class : IntersectionBoundingVolume
00025 // Description : This special bounding volume is the intersection of all of
00026 //               its constituent bounding volumes.
00027 //
00028 //               A point is defined to be within an
00029 //               IntersectionBoundingVolume if it is within all of its
00030 //               component bounding volumes.
00031 ////////////////////////////////////////////////////////////////////
00032 class EXPCL_PANDA_MATHUTIL IntersectionBoundingVolume : public GeometricBoundingVolume {
00033 PUBLISHED:
00034   INLINE_MATHUTIL IntersectionBoundingVolume();
00035   ALLOC_DELETED_CHAIN(IntersectionBoundingVolume);
00036 
00037 public:
00038   IntersectionBoundingVolume(const IntersectionBoundingVolume &copy);
00039 
00040 public:
00041   virtual BoundingVolume *make_copy() const;
00042 
00043   virtual LPoint3 get_approx_center() const;
00044   virtual void xform(const LMatrix4 &mat);
00045 
00046   virtual void output(ostream &out) const;
00047   virtual void write(ostream &out, int indent_level) const;
00048 
00049 PUBLISHED:
00050   INLINE_MATHUTIL int get_num_components() const;
00051   INLINE_MATHUTIL const GeometricBoundingVolume *get_component(int n) const;
00052   MAKE_SEQ(get_components, get_num_components, get_component);
00053 
00054   void clear_components();
00055   void add_component(const GeometricBoundingVolume *component);
00056 
00057 protected:
00058   virtual bool extend_other(BoundingVolume *other) const;
00059   virtual bool around_other(BoundingVolume *other,
00060                             const BoundingVolume **first,
00061                             const BoundingVolume **last) const;
00062   virtual int contains_other(const BoundingVolume *other) const;
00063 
00064   virtual int contains_point(const LPoint3 &point) const;
00065   virtual int contains_lineseg(const LPoint3 &a, const LPoint3 &b) const;
00066   virtual int contains_sphere(const BoundingSphere *sphere) const;
00067   virtual int contains_box(const BoundingBox *box) const;
00068   virtual int contains_hexahedron(const BoundingHexahedron *hexahedron) const;
00069   virtual int contains_line(const BoundingLine *line) const;
00070   virtual int contains_plane(const BoundingPlane *plane) const;
00071   virtual int contains_union(const UnionBoundingVolume *unionv) const;
00072   virtual int contains_intersection(const IntersectionBoundingVolume *intersection) const;
00073   virtual int contains_finite(const FiniteBoundingVolume *volume) const;
00074   virtual int contains_geometric(const GeometricBoundingVolume *volume) const;
00075   int other_contains_intersection(const BoundingVolume *other) const;
00076 
00077 private:
00078   typedef pvector<CPT(GeometricBoundingVolume) > Components;
00079   Components _components;
00080 
00081 public:
00082   static TypeHandle get_class_type() {
00083     return _type_handle;
00084   }
00085   static void init_type() {
00086     GeometricBoundingVolume::init_type();
00087     register_type(_type_handle, "IntersectionBoundingVolume",
00088                   GeometricBoundingVolume::get_class_type());
00089   }
00090   virtual TypeHandle get_type() const {
00091     return get_class_type();
00092   }
00093   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00094 
00095 private:
00096   static TypeHandle _type_handle;
00097 
00098   friend class BoundingVolume;
00099 };
00100 
00101 #include "intersectionBoundingVolume.I"
00102 
00103 #endif
00104 
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