1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#include "bulletshape.hpp"
#include <stdexcept>
#include <string>
#include <BulletCollision/CollisionShapes/btBoxShape.h>
#include <BulletCollision/CollisionShapes/btCompoundShape.h>
#include <BulletCollision/CollisionShapes/btHeightfieldTerrainShape.h>
#include <BulletCollision/CollisionShapes/btScaledBvhTriangleMeshShape.h>
namespace Resource
{
namespace
{
CollisionShapePtr duplicateCollisionShape(const btCollisionShape* shape)
{
if (shape == nullptr)
return nullptr;
if (shape->isCompound())
{
const btCompoundShape* comp = static_cast<const btCompoundShape*>(shape);
std::unique_ptr<btCompoundShape, DeleteCollisionShape> newShape(new btCompoundShape);
for (int i = 0, n = comp->getNumChildShapes(); i < n; ++i)
{
auto child = duplicateCollisionShape(comp->getChildShape(i));
const btTransform& trans = comp->getChildTransform(i);
newShape->addChildShape(trans, child.release());
}
return newShape;
}
if (shape->getShapeType() == SCALED_TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
const btScaledBvhTriangleMeshShape* trishape = static_cast<const btScaledBvhTriangleMeshShape*>(shape);
return CollisionShapePtr(new btScaledBvhTriangleMeshShape(
const_cast<btBvhTriangleMeshShape*>(trishape->getChildShape()), trishape->getLocalScaling()));
}
if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
{
const btBvhTriangleMeshShape* trishape = static_cast<const btBvhTriangleMeshShape*>(shape);
return CollisionShapePtr(new btScaledBvhTriangleMeshShape(
const_cast<btBvhTriangleMeshShape*>(trishape), btVector3(1.f, 1.f, 1.f)));
}
if (shape->getShapeType() == BOX_SHAPE_PROXYTYPE)
{
const btBoxShape* boxshape = static_cast<const btBoxShape*>(shape);
return CollisionShapePtr(new btBoxShape(*boxshape));
}
if (shape->getShapeType() == TERRAIN_SHAPE_PROXYTYPE)
return CollisionShapePtr(
new btHeightfieldTerrainShape(static_cast<const btHeightfieldTerrainShape&>(*shape)));
throw std::logic_error(std::string("Unhandled Bullet shape duplication: ") + shape->getName());
}
void deleteShape(btCollisionShape* shape)
{
if (shape->isCompound())
{
btCompoundShape* compound = static_cast<btCompoundShape*>(shape);
for (int i = 0, n = compound->getNumChildShapes(); i < n; i++)
if (btCollisionShape* child = compound->getChildShape(i))
deleteShape(child);
}
delete shape;
}
}
void DeleteCollisionShape::operator()(btCollisionShape* shape) const
{
deleteShape(shape);
}
BulletShape::BulletShape(const BulletShape& other, const osg::CopyOp& copyOp)
: Object(other, copyOp)
, mCollisionShape(duplicateCollisionShape(other.mCollisionShape.get()))
, mAvoidCollisionShape(duplicateCollisionShape(other.mAvoidCollisionShape.get()))
, mCollisionBox(other.mCollisionBox)
, mAnimatedShapes(other.mAnimatedShapes)
, mFileName(other.mFileName)
, mFileHash(other.mFileHash)
, mVisualCollisionType(other.mVisualCollisionType)
{
}
void BulletShape::setLocalScaling(const btVector3& scale)
{
mCollisionShape->setLocalScaling(scale);
if (mAvoidCollisionShape)
mAvoidCollisionShape->setLocalScaling(scale);
}
osg::ref_ptr<BulletShapeInstance> makeInstance(osg::ref_ptr<const BulletShape> source)
{
return { new BulletShapeInstance(std::move(source)) };
}
BulletShapeInstance::BulletShapeInstance(osg::ref_ptr<const BulletShape> source)
: BulletShape(*source)
, mSource(std::move(source))
{
}
}
|
