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bullet: add interface to access BulletTriangleMesh vertices/triangles

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rdb 2017-10-20 19:53:02 +02:00
parent 8a35f360bd
commit 407c8e8712
3 changed files with 40 additions and 3 deletions
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28
panda/src/bullet/bulletTriangleMesh.I
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@ -19,6 +19,34 @@ ptr() const {
return (btStridingMeshInterface *)&_mesh; return (btStridingMeshInterface *)&_mesh;
} }
/**
* Returns the number of vertices in this triangle mesh.
*/
INLINE size_t BulletTriangleMesh::
get_num_vertices() const {
return _vertices.size();
}
/**
* Returns the vertex at the given vertex index.
*/
INLINE LPoint3 BulletTriangleMesh::
get_vertex(size_t index) const {
nassertr(index < _vertices.size(), LPoint3::zero());
const btVector3 &vertex = _vertices[index];
return LPoint3(vertex[0], vertex[1], vertex[2]);
}
/**
* Returns the vertex indices making up the given triangle index.
*/
INLINE LVecBase3i BulletTriangleMesh::
get_triangle(size_t index) const {
index *= 3;
nassertr(index + 2 < _indices.size(), LVecBase3i::zero());
return LVecBase3i(_indices[index], _indices[index + 1], _indices[index + 2]);
}
/** /**
* *
*/ */

2
panda/src/bullet/bulletTriangleMesh.cxx
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@ -39,7 +39,7 @@ BulletTriangleMesh()
/** /**
* Returns the number of triangles in this triangle mesh. * Returns the number of triangles in this triangle mesh.
*/ */
int BulletTriangleMesh:: size_t BulletTriangleMesh::
get_num_triangles() const { get_num_triangles() const {
return _indices.size() / 3; return _indices.size() / 3;
} }

13
panda/src/bullet/bulletTriangleMesh.h
View File

@ -48,15 +48,24 @@ PUBLISHED:
void set_welding_distance(PN_stdfloat distance); void set_welding_distance(PN_stdfloat distance);
void preallocate(int num_verts, int num_indices); void preallocate(int num_verts, int num_indices);
int get_num_triangles() const; size_t get_num_triangles() const;
PN_stdfloat get_welding_distance() const; PN_stdfloat get_welding_distance() const;
virtual void output(ostream &out) const; virtual void output(ostream &out) const;
virtual void write(ostream &out, int indent_level) const; virtual void write(ostream &out, int indent_level) const;
MAKE_PROPERTY(num_triangles, get_num_triangles); public:
INLINE size_t get_num_vertices() const;
INLINE LPoint3 get_vertex(size_t index) const;
INLINE LVecBase3i get_triangle(size_t index) const;
PUBLISHED:
MAKE_PROPERTY(welding_distance, get_welding_distance, set_welding_distance); MAKE_PROPERTY(welding_distance, get_welding_distance, set_welding_distance);
MAKE_SEQ_PROPERTY(vertices, get_num_vertices, get_vertex);
MAKE_SEQ_PROPERTY(triangles, get_num_triangles, get_triangle);
public: public:
INLINE btStridingMeshInterface *ptr() const; INLINE btStridingMeshInterface *ptr() const;