Panda3D
collisionSegment.h
1 // Filename: collisionSegment.h
2 // Created by: drose (30Jan01)
3 //
4 ////////////////////////////////////////////////////////////////////
5 //
6 // PANDA 3D SOFTWARE
7 // Copyright (c) Carnegie Mellon University. All rights reserved.
8 //
9 // All use of this software is subject to the terms of the revised BSD
10 // license. You should have received a copy of this license along
11 // with this source code in a file named "LICENSE."
12 //
13 ////////////////////////////////////////////////////////////////////
14 
15 #ifndef COLLISIONSEGMENT_H
16 #define COLLISIONSEGMENT_H
17 
18 #include "pandabase.h"
19 
20 #include "collisionSolid.h"
21 
22 class LensNode;
23 
24 ////////////////////////////////////////////////////////////////////
25 // Class : CollisionSegment
26 // Description : A finite line segment, with two specific endpoints
27 // but no thickness. It's similar to a CollisionRay,
28 // except it does not continue to infinity.
29 //
30 // It does have an ordering, from point A to point B.
31 // If more than a single point of the segment is
32 // intersecting a solid, the reported intersection point
33 // is generally the closest on the segment to point A.
34 ////////////////////////////////////////////////////////////////////
35 class EXPCL_PANDA_COLLIDE CollisionSegment : public CollisionSolid {
36 PUBLISHED:
37  INLINE CollisionSegment();
38  INLINE CollisionSegment(const LPoint3 &a, const LPoint3 &db);
39  INLINE CollisionSegment(PN_stdfloat ax, PN_stdfloat ay, PN_stdfloat az,
40  PN_stdfloat bx, PN_stdfloat by, PN_stdfloat bz);
41 
42  virtual LPoint3 get_collision_origin() const;
43 
44 public:
45  INLINE CollisionSegment(const CollisionSegment &copy);
46  virtual CollisionSolid *make_copy();
47 
48  virtual PT(CollisionEntry)
49  test_intersection(const CollisionEntry &entry) const;
50 
51  virtual void xform(const LMatrix4 &mat);
52 
53  virtual void output(ostream &out) const;
54 
55 PUBLISHED:
56  INLINE void set_point_a(const LPoint3 &a);
57  INLINE void set_point_a(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
58  INLINE const LPoint3 &get_point_a() const;
59 
60  INLINE void set_point_b(const LPoint3 &b);
61  INLINE void set_point_b(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
62  INLINE const LPoint3 &get_point_b() const;
63 
64  bool set_from_lens(LensNode *camera, const LPoint2 &point);
65  INLINE bool set_from_lens(LensNode *camera, PN_stdfloat px, PN_stdfloat py);
66 
67 protected:
68  virtual PT(BoundingVolume) compute_internal_bounds() const;
69 
70 protected:
71  virtual void fill_viz_geom();
72 
73 private:
74  LPoint3 _a, _b;
75 
76 public:
77  static void register_with_read_factory();
78  virtual void write_datagram(BamWriter *manager, Datagram &dg);
79 
80 protected:
81  static TypedWritable *make_from_bam(const FactoryParams &params);
82  void fillin(DatagramIterator &scan, BamReader *manager);
83 
84 public:
85  static TypeHandle get_class_type() {
86  return _type_handle;
87  }
88  static void init_type() {
89  CollisionSolid::init_type();
90  register_type(_type_handle, "CollisionSegment",
91  CollisionSolid::get_class_type());
92  }
93  virtual TypeHandle get_type() const {
94  return get_class_type();
95  }
96  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
97 
98 private:
99  static TypeHandle _type_handle;
100 };
101 
102 #include "collisionSegment.I"
103 
104 #endif
105 
106 
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition: bamReader.h:122
The abstract base class for all things that can collide with other things in the world, and all the things they can collide with (except geometry).
A node that contains a Lens.
Definition: lensNode.h:32
Base class for objects that can be written to and read from Bam files.
Definition: typedWritable.h:37
This is a three-component point in space (as opposed to a three-component vector, which represents a ...
Definition: lpoint3.h:99
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition: bamWriter.h:73
virtual void write_datagram(BamWriter *manager, Datagram &me)
Function to write the important information in the particular object to a Datagram.
This is an abstract class for any volume in any sense which can be said to define the locality of ref...
A finite line segment, with two specific endpoints but no thickness.
This is a 4-by-4 transform matrix.
Definition: lmatrix.h:451
Defines a single collision event.
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Definition: factoryParams.h:40
A class to retrieve the individual data elements previously stored in a Datagram. ...
This is a two-component point in space.
Definition: lpoint2.h:92
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:85
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition: datagram.h:43