Panda3D
 All Classes Functions Variables Enumerations
boundingSphere.h
00001 // Filename: boundingSphere.h
00002 // Created by:  drose (01Oct99)
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 BOUNDINGSPHERE_H
00016 #define BOUNDINGSPHERE_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "finiteBoundingVolume.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : BoundingSphere
00024 // Description : This defines a bounding sphere, consisting of a
00025 //               center and a radius.  It is always a sphere, and
00026 //               never an ellipsoid or other quadric.
00027 ////////////////////////////////////////////////////////////////////
00028 class EXPCL_PANDA_MATHUTIL BoundingSphere : public FiniteBoundingVolume {
00029 PUBLISHED:
00030   INLINE_MATHUTIL BoundingSphere();
00031   INLINE_MATHUTIL BoundingSphere(const LPoint3 &center, PN_stdfloat radius);
00032   ALLOC_DELETED_CHAIN(BoundingSphere);
00033 
00034 public:
00035   virtual BoundingVolume *make_copy() const;
00036 
00037   virtual LPoint3 get_min() const;
00038   virtual LPoint3 get_max() const;
00039   virtual PN_stdfloat get_volume() const;
00040 
00041   virtual LPoint3 get_approx_center() const;
00042   virtual void xform(const LMatrix4 &mat);
00043 
00044   virtual void output(ostream &out) const;
00045 
00046 PUBLISHED:
00047   INLINE_MATHUTIL LPoint3 get_center() const;
00048   INLINE_MATHUTIL PN_stdfloat get_radius() const;
00049 
00050 public:
00051   virtual const BoundingSphere *as_bounding_sphere() const;
00052 
00053 protected:
00054   virtual bool extend_other(BoundingVolume *other) const;
00055   virtual bool around_other(BoundingVolume *other,
00056                             const BoundingVolume **first,
00057                             const BoundingVolume **last) const;
00058   virtual int contains_other(const BoundingVolume *other) const;
00059 
00060 
00061   virtual bool extend_by_point(const LPoint3 &point);
00062   virtual bool extend_by_sphere(const BoundingSphere *sphere);
00063   virtual bool extend_by_box(const BoundingBox *box);
00064   virtual bool extend_by_hexahedron(const BoundingHexahedron *hexahedron);
00065   virtual bool extend_by_finite(const FiniteBoundingVolume *volume);
00066 
00067   virtual bool around_points(const LPoint3 *first,
00068                              const LPoint3 *last);
00069   virtual bool around_finite(const BoundingVolume **first,
00070                              const BoundingVolume **last);
00071 
00072   virtual int contains_point(const LPoint3 &point) const;
00073   virtual int contains_lineseg(const LPoint3 &a, const LPoint3 &b) const;
00074   virtual int contains_hexahedron(const BoundingHexahedron *hexahedron) const;
00075   virtual int contains_sphere(const BoundingSphere *sphere) const;
00076   virtual int contains_box(const BoundingBox *box) const;
00077   virtual int contains_line(const BoundingLine *line) const;
00078   virtual int contains_plane(const BoundingPlane *plane) const;
00079 
00080 private:
00081   LPoint3 _center;
00082   PN_stdfloat _radius;
00083 
00084 
00085 public:
00086   static TypeHandle get_class_type() {
00087     return _type_handle;
00088   }
00089   static void init_type() {
00090     FiniteBoundingVolume::init_type();
00091     register_type(_type_handle, "BoundingSphere",
00092                   FiniteBoundingVolume::get_class_type());
00093   }
00094   virtual TypeHandle get_type() const {
00095     return get_class_type();
00096   }
00097   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00098 
00099 private:
00100   static TypeHandle _type_handle;
00101 
00102   friend class BoundingHexahedron;
00103 };
00104 
00105 #include "boundingSphere.I"
00106 
00107 #endif
 All Classes Functions Variables Enumerations