Panda3D
boundingHexahedron.h
Go to the documentation of this file.
1 /**
2  * PANDA 3D SOFTWARE
3  * Copyright (c) Carnegie Mellon University. All rights reserved.
4  *
5  * All use of this software is subject to the terms of the revised BSD
6  * license. You should have received a copy of this license along
7  * with this source code in a file named "LICENSE."
8  *
9  * @file boundingHexahedron.h
10  * @author drose
11  * @date 1999-10-03
12  */
13 
14 #ifndef BOUNDINGHEXAHEDRON_H
15 #define BOUNDINGHEXAHEDRON_H
16 
17 #include "pandabase.h"
18 
19 #include "finiteBoundingVolume.h"
20 #include "frustum.h"
21 #include "plane.h"
22 
23 #include "coordinateSystem.h"
24 
25 
26 /**
27  * This defines a bounding convex hexahedron. It is typically used to
28  * represent a frustum, but may represent any enclosing convex hexahedron,
29  * including simple boxes. However, if all you want is an axis-aligned
30  * bounding box, you may be better off with the simpler BoundingBox class.
31  */
32 class EXPCL_PANDA_MATHUTIL BoundingHexahedron : public FiniteBoundingVolume {
33 public:
34  INLINE_MATHUTIL BoundingHexahedron();
35 
36 PUBLISHED:
37  BoundingHexahedron(const LFrustum &frustum, bool is_ortho,
38  CoordinateSystem cs = CS_default);
39  BoundingHexahedron(const LPoint3 &fll, const LPoint3 &flr,
40  const LPoint3 &fur, const LPoint3 &ful,
41  const LPoint3 &nll, const LPoint3 &nlr,
42  const LPoint3 &nur, const LPoint3 &nul);
43 
44 public:
45  ALLOC_DELETED_CHAIN(BoundingHexahedron);
46  virtual BoundingVolume *make_copy() const;
47 
48  virtual LPoint3 get_min() const;
49  virtual LPoint3 get_max() const;
50 
51  virtual LPoint3 get_approx_center() const;
52  virtual void xform(const LMatrix4 &mat);
53 
54  virtual void output(std::ostream &out) const;
55  virtual void write(std::ostream &out, int indent_level = 0) const;
56 
57 PUBLISHED:
58  INLINE_MATHUTIL int get_num_points() const;
59  INLINE_MATHUTIL LPoint3 get_point(int n) const;
60  MAKE_SEQ(get_points, get_num_points, get_point);
61  INLINE_MATHUTIL int get_num_planes() const;
62  INLINE_MATHUTIL LPlane get_plane(int n) const;
63  MAKE_SEQ(get_planes, get_num_planes, get_plane);
64 
65  MAKE_SEQ_PROPERTY(points, get_num_points, get_point);
66  MAKE_SEQ_PROPERTY(planes, get_num_planes, get_plane);
67 
68 public:
69  virtual const BoundingHexahedron *as_bounding_hexahedron() const;
70 
71 protected:
72  virtual bool extend_other(BoundingVolume *other) const;
73  virtual bool around_other(BoundingVolume *other,
74  const BoundingVolume **first,
75  const BoundingVolume **last) const;
76  virtual int contains_other(const BoundingVolume *other) const;
77 
78  virtual int contains_point(const LPoint3 &point) const;
79  virtual int contains_lineseg(const LPoint3 &a, const LPoint3 &b) const;
80  virtual int contains_sphere(const BoundingSphere *sphere) const;
81  virtual int contains_box(const BoundingBox *box) const;
82  virtual int contains_plane(const BoundingPlane *plane) const;
83  virtual int contains_hexahedron(const BoundingHexahedron *hexahedron) const;
84 
85 private:
86  void set_planes();
87  void set_centroid();
88 
89 private:
90  enum {
91  num_points = 8,
92  num_planes = 6
93  };
94  LPoint3 _points[num_points];
95  LPlane _planes[num_planes];
96  LPoint3 _centroid;
97 
98 
99 public:
100  static TypeHandle get_class_type() {
101  return _type_handle;
102  }
103  static void init_type() {
104  FiniteBoundingVolume::init_type();
105  register_type(_type_handle, "BoundingHexahedron",
106  FiniteBoundingVolume::get_class_type());
107  }
108  virtual TypeHandle get_type() const {
109  return get_class_type();
110  }
111  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
112 
113 private:
114  static TypeHandle _type_handle;
115 
116  friend class BoundingSphere;
117  friend class BoundingBox;
118 };
119 
120 #include "boundingHexahedron.I"
121 
122 #endif
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
An axis-aligned bounding box; that is, a minimum and maximum coordinate triple.
Definition: boundingBox.h:29
This defines a bounding convex hexahedron.
This funny bounding volume is an infinite plane that divides space into two regions: the part behind ...
Definition: boundingPlane.h:28
This defines a bounding sphere, consisting of a center and a radius.
This is an abstract class for any volume in any sense which can be said to define the locality of ref...
virtual const BoundingHexahedron * as_bounding_hexahedron() const
Virtual downcast method.
A special kind of GeometricBoundingVolume that is known to be finite.
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition: register_type.I:22