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bulletBoxShape.cxx
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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 bulletBoxShape.cxx
10 * @author enn0x
11 * @date 2010-01-24
12 */
13
14#include "bulletBoxShape.h"
15
16#include "bulletWorld.h"
17
18#include "bullet_utils.h"
19
20TypeHandle BulletBoxShape::_type_handle;
21
22/**
23 *
24 */
25BulletBoxShape::
26BulletBoxShape(const LVecBase3 &halfExtents) : _half_extents(halfExtents) {
27
28 btVector3 btHalfExtents = LVecBase3_to_btVector3(halfExtents);
29
30 _shape = new btBoxShape(btHalfExtents);
31 _shape->setUserPointer(this);
32}
33
34/**
35 *
36 */
37BulletBoxShape::
38BulletBoxShape(const BulletBoxShape &copy) {
39 LightMutexHolder holder(BulletWorld::get_global_lock());
40
41 _half_extents = copy._half_extents;
42 btVector3 btHalfExtents = LVecBase3_to_btVector3(_half_extents);
43
44 _shape = new btBoxShape(btHalfExtents);
45 _shape->setUserPointer(this);
46}
47
48/**
49 *
50 */
51btCollisionShape *BulletBoxShape::
52ptr() const {
53
54 return _shape;
55}
56
57/**
58 *
59 */
60LVecBase3 BulletBoxShape::
61get_half_extents_without_margin() const {
62 LightMutexHolder holder(BulletWorld::get_global_lock());
63
64 return btVector3_to_LVecBase3(_shape->getHalfExtentsWithoutMargin());
65}
66
67/**
68 *
69 */
70LVecBase3 BulletBoxShape::
71get_half_extents_with_margin() const {
72 LightMutexHolder holder(BulletWorld::get_global_lock());
73
74 return btVector3_to_LVecBase3(_shape->getHalfExtentsWithMargin());
75}
76
77/**
78 *
79 */
80BulletBoxShape *BulletBoxShape::
81make_from_solid(const CollisionBox *solid) {
82
83 LPoint3 p0 = solid->get_min();
84 LPoint3 p1 = solid->get_max();
85
86 LVecBase3 extents((p1.get_x() - p0.get_x()) / 2.0,
87 (p1.get_y() - p0.get_y()) / 2.0,
88 (p1.get_z() - p0.get_z()) / 2.0);
89
90 return new BulletBoxShape(extents);
91}
92
93/**
94 * Tells the BamReader how to create objects of type BulletShape.
95 */
98 BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
99}
100
101/**
102 * Writes the contents of this object to the datagram for shipping out to a
103 * Bam file.
104 */
106write_datagram(BamWriter *manager, Datagram &dg) {
107 BulletShape::write_datagram(manager, dg);
108 dg.add_stdfloat(get_margin());
109 _half_extents.write_datagram(dg);
110}
111
112/**
113 * This function is called by the BamReader's factory when a new object of
114 * type BulletShape is encountered in the Bam file. It should create the
115 * BulletShape and extract its information from the file.
116 */
117TypedWritable *BulletBoxShape::
118make_from_bam(const FactoryParams &params) {
119 BulletBoxShape *param = new BulletBoxShape;
120 DatagramIterator scan;
121 BamReader *manager;
122
123 parse_params(params, scan, manager);
124 param->fillin(scan, manager);
125
126 return param;
127}
128
129/**
130 * This internal function is called by make_from_bam to read in all of the
131 * relevant data from the BamFile for the new BulletShape.
132 */
133void BulletBoxShape::
134fillin(DatagramIterator &scan, BamReader *manager) {
135 BulletShape::fillin(scan, manager);
136 nassertv(_shape == nullptr);
137
138 PN_stdfloat margin = scan.get_stdfloat();
139
140 _half_extents.read_datagram(scan);
141
142 _shape = new btBoxShape(LVecBase3_to_btVector3(_half_extents));
143 _shape->setUserPointer(this);
144 _shape->setMargin(margin);
145}
void parse_params(const FactoryParams &params, DatagramIterator &scan, BamReader *&manager)
Takes in a FactoryParams, passed from a WritableFactory into any TypedWritable's make function,...
Definition bamReader.I:275
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition bamReader.h:110
static WritableFactory * get_factory()
Returns the global WritableFactory for generating TypedWritable objects.
Definition bamReader.I:177
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition bamWriter.h:63
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
static void register_with_read_factory()
Tells the BamReader how to create objects of type BulletShape.
A cuboid collision volume or object.
A class to retrieve the individual data elements previously stored in a Datagram.
PN_stdfloat get_stdfloat()
Extracts either a 32-bit or a 64-bit floating-point number, according to Datagram::set_stdfloat_doubl...
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition datagram.h:38
void add_stdfloat(PN_stdfloat value)
Adds either a 32-bit or a 64-bit floating-point number, according to set_stdfloat_double().
Definition datagram.I:133
An instance of this class is passed to the Factory when requesting it to do its business and construc...
void register_factory(TypeHandle handle, CreateFunc *func, void *user_data=nullptr)
Registers a new kind of thing the Factory will be able to create.
Definition factory.I:73
Similar to MutexHolder, but for a light mutex.
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.
virtual void fillin(DatagramIterator &scan, BamReader *manager)
This internal function is intended to be called by each class's make_from_bam() method to read in all...
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.