[ODE] dGeomTriMeshDataBuildSimple

[Adrian Boeing]

Hi,

I am trying to create a mesh with dGeomTriMeshDataBuildSimple. I have 
used this code before, and it has worked, however for the simple mesh I 
am now trying to construct objects just fall right through the mesh as 
if it was not there.

Does anyone know why ODE will not perform collision tests with this mesh?

This is the mesh I am trying to create is: (an upside down open square 
pyramid)
float verts[] = {        0,0,1,//top
                            -1,0,0,    0,-1,0, 1,0,0, //middle
                                    0,0,-1 }; //bottom
            int inds[] = {    2,1,0, 2,0,3,
                            1,2,4, 2,3,4};
...
    ptm->Init(0,0,0,verts,5,inds,3*4);

This is my code for setting up a trimesh:
void palODETerrainMesh::Init(Float px, Float py, Float pz, const Float 
*pVertices, int nVertices, const int *pIndices, int nIndices) {
    int i;
    dVector3 *spacedvert = new dVector3[nVertices];
    for (i=0;i<nVertices;i++) {
        spacedvert[i][0]=pVertices[i*3+0];
        spacedvert[i][1]=pVertices[i*3+1];
        spacedvert[i][2]=pVertices[i*3+2];
    }

    palTerrainMesh::Init(px,py,pz,pVertices,nVertices,pIndices,nIndices);
    // build the trimesh data
    dTriMeshDataID data=dGeomTriMeshDataCreate();
    
dGeomTriMeshDataBuildSimple(data,(dReal*)spacedvert,nVertices,pIndices,nIndices);
    // build the trimesh geom
    odeGeom=dCreateTriMesh(g_space,data,0,0,0);
    // set the geom position
    dGeomSetPosition(odeGeom,m_fPosX,m_fPosY,m_fPosZ);
    // in our application we don't want geoms constructed with meshes 
(the terrain) to have a body
    dGeomSetBody(odeGeom,0);

    delete [] spacedvert;
}

Thanks,
-Adrian