static btTriangleIndexVertexArray* GenerateTriMeshData
(iMeshWrapper* mesh, int*& indices, size_t& triangleCount, btVector3*& vertices,
size_t& vertexCount, csStringID base_id, csStringID colldet_id,
float internalScale)
{
csRef<iTriangleMesh> trimesh = FindColdetTriangleMesh(mesh, base_id, colldet_id);
if (!trimesh)
return 0;
// TODO: remove double vertices
csTriangle *c_triangle = trimesh->GetTriangles();
triangleCount = trimesh->GetTriangleCount();
vertexCount = trimesh->GetVertexCount ();
delete[] indices;
indices = new int[triangleCount * 3];
int indexStride = 3 * sizeof (int);
size_t i;
int* id = indices;
for (i = 0 ; i < triangleCount ; i++)
{
*id++ = c_triangle[i].a;
*id++ = c_triangle[i].b;
*id++ = c_triangle[i].c;
}
delete[] vertices;
vertices = new btVector3[vertexCount];
csVector3 *c_vertex = trimesh->GetVertices();
int vertexStride = sizeof (btVector3);
for (i = 0 ; i < vertexCount ; i++)
vertices[i].setValue (c_vertex[i].x * internalScale,
c_vertex[i].y * internalScale,
c_vertex[i].z * internalScale);
btTriangleIndexVertexArray* indexVertexArrays =
new btTriangleIndexVertexArray ((int)triangleCount, indices, (int)indexStride,
(int)vertexCount, (btScalar*) &vertices[0].x (), vertexStride);
return indexVertexArrays;
}
csOpcodeCollider::csOpcodeCollider (iMeshWrapper* mesh, csOpcodeCollisionSystem* sys)
: scfImplementationType (this), system (sys), mesh (mesh), model (NULL),
indexholder (NULL), vertholder (NULL), scale (1.0, 1.0, 1.0)
{
opcMeshInt.SetCallback (&MeshCallback, this);
csRef<iTriangleMesh> triMesh = FindColdetTriangleMesh (mesh,
system->baseID, system->colldetID);
if (!triMesh)
return;
csVector3* vertices = triMesh->GetVertices ();
size_t vertcount = triMesh->GetVertexCount ();
csTriangle* triangles = triMesh->GetTriangles ();
size_t tri_count = triMesh->GetTriangleCount ();
Opcode::OPCODECREATE OPCC;
size_t i;
if (tri_count>=1)
{
model = new Opcode::Model;
if (!model)
return;
vertholder = new Point [vertcount];
indexholder = new unsigned int[3*tri_count];
aabbox.StartBoundingBox ();
for (i = 0; i < vertcount; i++)
{
aabbox.AddBoundingVertex (vertices[i]);
vertholder[i].Set (vertices[i].x , vertices[i].y , vertices[i].z);
}
volume = aabbox.Volume ();
int index = 0;
for (i = 0 ; i < tri_count ; i++)
{
indexholder[index++] = triangles[i].a;
indexholder[index++] = triangles[i].b;
indexholder[index++] = triangles[i].c;
}
opcMeshInt.SetNbTriangles ((udword)tri_count);
opcMeshInt.SetNbVertices ((udword)vertcount);
// Mesh data
OPCC.mIMesh = &opcMeshInt;
OPCC.mSettings.mRules = Opcode::SPLIT_SPLATTER_POINTS | Opcode::SPLIT_GEOM_CENTER;
OPCC.mNoLeaf = true;
OPCC.mQuantized = true;
OPCC.mKeepOriginal = false;
OPCC.mCanRemap = false;
}
else
return;
// this should create the OPCODE model
bool status = model->Build (OPCC);
if (!status)
{
delete model;
model = NULL;
}
}