Panda3D
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00001 // Filename: boundingBox.h 00002 // Created by: drose (31May07) 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 BOUNDINGBOX_H 00016 #define BOUNDINGBOX_H 00017 00018 #include "pandabase.h" 00019 00020 #include "finiteBoundingVolume.h" 00021 #include "plane.h" 00022 00023 //////////////////////////////////////////////////////////////////// 00024 // Class : BoundingBox 00025 // Description : An axis-aligned bounding box; that is, a minimum and 00026 // maximum coordinate triple. 00027 // 00028 // This box is always axis-aligned. If you need a more 00029 // general bounding box, try BoundingHexahedron. 00030 //////////////////////////////////////////////////////////////////// 00031 class EXPCL_PANDA_MATHUTIL BoundingBox : public FiniteBoundingVolume { 00032 PUBLISHED: 00033 INLINE_MATHUTIL BoundingBox(); 00034 INLINE_MATHUTIL BoundingBox(const LPoint3 &min, const LPoint3 &max); 00035 ALLOC_DELETED_CHAIN(BoundingBox); 00036 00037 public: 00038 virtual BoundingVolume *make_copy() const; 00039 00040 virtual LPoint3 get_min() const; 00041 virtual LPoint3 get_max() const; 00042 virtual PN_stdfloat get_volume() const; 00043 00044 virtual LPoint3 get_approx_center() const; 00045 virtual void xform(const LMatrix4 &mat); 00046 00047 virtual void output(ostream &out) const; 00048 00049 PUBLISHED: 00050 INLINE_MATHUTIL int get_num_points() const; 00051 INLINE_MATHUTIL LPoint3 get_point(int n) const; 00052 MAKE_SEQ(get_points, get_num_points, get_point); 00053 INLINE_MATHUTIL int get_num_planes() const; 00054 INLINE_MATHUTIL LPlane get_plane(int n) const; 00055 MAKE_SEQ(get_planes, get_num_planes, get_plane); 00056 00057 public: 00058 // Inline accessors for speed. 00059 INLINE_MATHUTIL const LPoint3 &get_minq() const; 00060 INLINE_MATHUTIL const LPoint3 &get_maxq() const; 00061 00062 public: 00063 virtual const BoundingBox *as_bounding_box() const; 00064 00065 protected: 00066 virtual bool extend_other(BoundingVolume *other) const; 00067 virtual bool around_other(BoundingVolume *other, 00068 const BoundingVolume **first, 00069 const BoundingVolume **last) const; 00070 virtual int contains_other(const BoundingVolume *other) const; 00071 00072 00073 virtual bool extend_by_point(const LPoint3 &point); 00074 virtual bool extend_by_box(const BoundingBox *box); 00075 virtual bool extend_by_finite(const FiniteBoundingVolume *volume); 00076 00077 virtual bool around_points(const LPoint3 *first, 00078 const LPoint3 *last); 00079 virtual bool around_finite(const BoundingVolume **first, 00080 const BoundingVolume **last); 00081 00082 virtual int contains_point(const LPoint3 &point) const; 00083 virtual int contains_lineseg(const LPoint3 &a, const LPoint3 &b) const; 00084 virtual int contains_hexahedron(const BoundingHexahedron *hexahedron) const; 00085 virtual int contains_box(const BoundingBox *box) const; 00086 virtual int contains_line(const BoundingLine *line) const; 00087 virtual int contains_plane(const BoundingPlane *plane) const; 00088 virtual int contains_finite(const FiniteBoundingVolume *volume) const; 00089 00090 private: 00091 LPoint3 _min; 00092 LPoint3 _max; 00093 00094 static const int plane_def[6][3]; 00095 00096 public: 00097 static TypeHandle get_class_type() { 00098 return _type_handle; 00099 } 00100 static void init_type() { 00101 FiniteBoundingVolume::init_type(); 00102 register_type(_type_handle, "BoundingBox", 00103 FiniteBoundingVolume::get_class_type()); 00104 } 00105 virtual TypeHandle get_type() const { 00106 return get_class_type(); 00107 } 00108 virtual TypeHandle force_init_type() {init_type(); return get_class_type();} 00109 00110 private: 00111 static TypeHandle _type_handle; 00112 00113 friend class BoundingSphere; 00114 }; 00115 00116 #include "boundingBox.I" 00117 00118 #endif