IndexBuffer IndexBuffer_new(e_mesh_mode mode)
{
index_buffer* buffer = (index_buffer*)Malloc(sizeof(index_buffer));
buffer->face_size = face_size(mode);
buffer->index_buffer = (char*)SMalloc(DEFAULT_INDEX_BUFFER_SIZE);
buffer->index_buffer_size = DEFAULT_INDEX_BUFFER_SIZE;
buffer->index_buffer_tail = 0;
buffer->dirty_flag = 1;
buffer->mesh_mode = mode;
glGenBuffers( 1, &buffer->id );
glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, buffer->id );
IndexBuffer ret;
ret = buffer;
return ret;
}
unsigned int ROMesh<Variable, VertexDim, Scalar, VertexOffset
>::edge_face_index( unsigned int face_index,
unsigned int v1,
unsigned int v2
) const {
//vertices of the face
const unsigned int* verts = face(face_index) ;
//size of the face
unsigned int fsize = face_size(face_index) ;
//loop over the vertices
for(unsigned int i = 0; i < fsize; ++i) {
unsigned int vi = verts[ i ] ;
unsigned int vj = verts[(i+1)%fsize] ;
if(((vi==v1)&&(vj==v2))||((vi==v2)&&(vj==v1))) {
return i ;
}
}
//if no return was issued before, the edge was not found
return NO_INDEX ;
}