Panda3D

boundingLine.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 boundingLine.h
10 * @author drose
11 * @date 2000-07-04
12 */
13
14 #ifndef BOUNDINGLINE_H
15 #define BOUNDINGLINE_H
16
17 #include "pandabase.h"
18
19 #include "geometricBoundingVolume.h"
20
21 /**
22 * This funny bounding volume is an infinite line with no thickness and
23 * extending to infinity in both directions.
24 *
25 * Note that it *always* extends in both directions, despite the fact that you
26 * specify two points to the constructor. These are not endpoints, they are
27 * two arbitrary points on the line.
28 */
29 class EXPCL_PANDA_MATHUTIL BoundingLine : public GeometricBoundingVolume {
30 public:
31 INLINE_MATHUTIL BoundingLine();
32
33 PUBLISHED:
34 INLINE_MATHUTIL explicit BoundingLine(const LPoint3 &a, const LPoint3 &b);
35 ALLOC_DELETED_CHAIN(BoundingLine);
36
37 public:
38 virtual BoundingVolume *make_copy() const;
39
40 virtual LPoint3 get_approx_center() const;
41 virtual void xform(const LMatrix4 &mat);
42
43 virtual void output(std::ostream &out) const;
44
45 PUBLISHED:
46 INLINE_MATHUTIL const LPoint3 &get_point_a() const;
47 INLINE_MATHUTIL LPoint3 get_point_b() const;
48
49 public:
50 virtual const BoundingLine *as_bounding_line() const;
51
52 protected:
53 virtual bool extend_other(BoundingVolume *other) const;
54 virtual bool around_other(BoundingVolume *other,
55 const BoundingVolume **first,
56 const BoundingVolume **last) const;
57 virtual int contains_other(const BoundingVolume *other) const;
58
59 virtual bool extend_by_line(const BoundingLine *line);
60
61 virtual int contains_sphere(const BoundingSphere *sphere) const;
62 virtual int contains_box(const BoundingBox *box) const;
63
64 PN_stdfloat sqr_dist_to_line(const LPoint3 &point) const;
65
66 private:
67 LPoint3 _origin;
68 LVector3 _vector;
69
70
71 public:
72 static TypeHandle get_class_type() {
73 return _type_handle;
74 }
75 static void init_type() {
76 GeometricBoundingVolume::init_type();
77 register_type(_type_handle, "BoundingLine",
78 GeometricBoundingVolume::get_class_type());
79 }
80 virtual TypeHandle get_type() const {
81 return get_class_type();
82 }
83 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
84
85 private:
86 static TypeHandle _type_handle;
87
88 friend class BoundingSphere;
89 friend class BoundingBox;
90 };
91
92 #include "boundingLine.I"
93
94 #endif
boundingLine.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
BoundingBox
An axis-aligned bounding box; that is, a minimum and maximum coordinate triple.
Definition: boundingBox.h:29
BoundingLine
This funny bounding volume is an infinite line with no thickness and extending to infinity in both di...
Definition: boundingLine.h:29
BoundingSphere
This defines a bounding sphere, consisting of a center and a radius.
Definition: boundingSphere.h:25
BoundingVolume
This is an abstract class for any volume in any sense which can be said to define the locality of ref...
Definition: boundingVolume.h:41
BoundingVolume::as_bounding_line
virtual const BoundingLine * as_bounding_line() const
Virtual downcast method.
Definition: boundingVolume.cxx:144
GeometricBoundingVolume
This is another abstract class, for a general class of bounding volumes that actually enclose points ...
Definition: geometricBoundingVolume.h:29
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
geometricBoundingVolume.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
register_type
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