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boundingSphere.h
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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 boundingSphere.h
10 * @author drose
11 * @date 1999-10-01
12 */
13
14#ifndef BOUNDINGSPHERE_H
15#define BOUNDINGSPHERE_H
16
17#include "pandabase.h"
18
20
21/**
22 * This defines a bounding sphere, consisting of a center and a radius. It is
23 * always a sphere, and never an ellipsoid or other quadric.
24 */
25class EXPCL_PANDA_MATHUTIL BoundingSphere : public FiniteBoundingVolume {
26PUBLISHED:
27 INLINE_MATHUTIL BoundingSphere();
28 INLINE_MATHUTIL explicit BoundingSphere(const LPoint3 &center, PN_stdfloat radius);
29 ALLOC_DELETED_CHAIN(BoundingSphere);
30
31public:
32 virtual BoundingVolume *make_copy() const;
33
34 virtual LPoint3 get_min() const;
35 virtual LPoint3 get_max() const;
36 virtual PN_stdfloat get_volume() const;
37
38 virtual LPoint3 get_approx_center() const;
39 virtual void xform(const LMatrix4 &mat);
40
41 virtual void output(std::ostream &out) const;
42
43PUBLISHED:
44 INLINE_MATHUTIL LPoint3 get_center() const;
45 INLINE_MATHUTIL PN_stdfloat get_radius() const;
46
47 INLINE_MATHUTIL void set_center(const LPoint3 &center);
48 INLINE_MATHUTIL void set_radius(PN_stdfloat radius);
49
50 MAKE_PROPERTY(center, get_center, set_center);
51 MAKE_PROPERTY(radius, get_radius, set_radius);
52
53public:
54 virtual const BoundingSphere *as_bounding_sphere() const;
55
56protected:
57 virtual bool extend_other(BoundingVolume *other) const;
58 virtual bool around_other(BoundingVolume *other,
59 const BoundingVolume **first,
60 const BoundingVolume **last) const;
61 virtual int contains_other(const BoundingVolume *other) const;
62
63
64 virtual bool extend_by_point(const LPoint3 &point);
65 virtual bool extend_by_sphere(const BoundingSphere *sphere);
66 virtual bool extend_by_box(const BoundingBox *box);
67 virtual bool extend_by_hexahedron(const BoundingHexahedron *hexahedron);
68 virtual bool extend_by_finite(const FiniteBoundingVolume *volume);
69
70 virtual bool around_points(const LPoint3 *first,
71 const LPoint3 *last);
72 virtual bool around_finite(const BoundingVolume **first,
73 const BoundingVolume **last);
74
75 virtual int contains_point(const LPoint3 &point) const;
76 virtual int contains_lineseg(const LPoint3 &a, const LPoint3 &b) const;
77 virtual int contains_hexahedron(const BoundingHexahedron *hexahedron) const;
78 virtual int contains_sphere(const BoundingSphere *sphere) const;
79 virtual int contains_box(const BoundingBox *box) const;
80 virtual int contains_line(const BoundingLine *line) const;
81 virtual int contains_plane(const BoundingPlane *plane) const;
82
83private:
84 LPoint3 _center;
85 PN_stdfloat _radius;
86
87
88public:
89 static TypeHandle get_class_type() {
90 return _type_handle;
91 }
92 static void init_type() {
93 FiniteBoundingVolume::init_type();
94 register_type(_type_handle, "BoundingSphere",
95 FiniteBoundingVolume::get_class_type());
96 }
97 virtual TypeHandle get_type() const {
98 return get_class_type();
99 }
100 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
101
102private:
103 static TypeHandle _type_handle;
104
105 friend class BoundingHexahedron;
106};
107
108#include "boundingSphere.I"
109
110#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 line with no thickness and extending to infinity in both di...
This funny bounding volume is an infinite plane that divides space into two regions: the part behind ...
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 BoundingSphere * as_bounding_sphere() 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.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...