Panda3D
collisionRay.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 collisionRay.h
10  * @author drose
11  * @date 2000-06-22
12  */
13 
14 #ifndef COLLISIONRAY_H
15 #define COLLISIONRAY_H
16 
17 #include "pandabase.h"
18 
19 #include "collisionSolid.h"
20 #include "lensNode.h"
21 
22 /**
23  * An infinite ray, with a specific origin and direction. It begins at its
24  * origin and continues in one direction to infinity, and it has no radius.
25  * Useful for picking from a window, or for gravity effects.
26  */
27 class EXPCL_PANDA_COLLIDE CollisionRay : public CollisionSolid {
28 PUBLISHED:
29  INLINE CollisionRay();
30  INLINE explicit CollisionRay(const LPoint3 &origin, const LVector3 &direction);
31  INLINE explicit CollisionRay(PN_stdfloat ox, PN_stdfloat oy, PN_stdfloat oz,
32  PN_stdfloat dx, PN_stdfloat dy, PN_stdfloat dz);
33 
34  virtual LPoint3 get_collision_origin() const;
35 
36 public:
37  INLINE CollisionRay(const CollisionRay &copy);
38  virtual CollisionSolid *make_copy();
39 
40  virtual PT(CollisionEntry)
41  test_intersection(const CollisionEntry &entry) const;
42 
43  virtual void xform(const LMatrix4 &mat);
44 
45  virtual void output(std::ostream &out) const;
46 
47 PUBLISHED:
48  INLINE void set_origin(const LPoint3 &origin);
49  INLINE void set_origin(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
50  INLINE const LPoint3 &get_origin() const;
51  MAKE_PROPERTY(origin, get_origin, set_origin);
52 
53  INLINE void set_direction(const LVector3 &direction);
54  INLINE void set_direction(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
55  INLINE const LVector3 &get_direction() const;
56  MAKE_PROPERTY(direction, get_direction, set_direction);
57 
58  bool set_from_lens(LensNode *camera, const LPoint2 &point);
59  INLINE bool set_from_lens(LensNode *camera, PN_stdfloat px, PN_stdfloat py);
60 
61 protected:
62  virtual PT(BoundingVolume) compute_internal_bounds() const;
63 
64 protected:
65  virtual void fill_viz_geom();
66 
67 private:
68  LPoint3 _origin;
69  LVector3 _direction;
70 
71 public:
72  static void register_with_read_factory();
73  virtual void write_datagram(BamWriter *manager, Datagram &dg);
74 
75 protected:
76  static TypedWritable *make_from_bam(const FactoryParams &params);
77  void fillin(DatagramIterator &scan, BamReader *manager);
78 
79 public:
80  static TypeHandle get_class_type() {
81  return _type_handle;
82  }
83  static void init_type() {
84  CollisionSolid::init_type();
85  register_type(_type_handle, "CollisionRay",
86  CollisionSolid::get_class_type());
87  }
88  virtual TypeHandle get_type() const {
89  return get_class_type();
90  }
91  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
92 
93 private:
94  static TypeHandle _type_handle;
95 };
96 
97 #include "collisionRay.I"
98 
99 #endif
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition: bamReader.h:110
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition: bamWriter.h:63
This is an abstract class for any volume in any sense which can be said to define the locality of ref...
Defines a single collision event.
An infinite ray, with a specific origin and direction.
Definition: collisionRay.h:27
The abstract base class for all things that can collide with other things in the world,...
virtual void write_datagram(BamWriter *manager, Datagram &me)
Function to write the important information in the particular object to a Datagram.
A class to retrieve the individual data elements previously stored in a Datagram.
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition: datagram.h:38
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Definition: factoryParams.h:36
A node that contains a Lens.
Definition: lensNode.h:29
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
Base class for objects that can be written to and read from Bam files.
Definition: typedWritable.h:35
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