Quote - > Quote - RorrKonn: If you ever come across the formula for repositioning the vertices where triangles and quadrangles meet, let me know. I'd be highly interested. Not for organic modeling, because I think Catmull-Clark is sufficient for that, but I've got other applications were that mixed algorithm would be really useful.

 

I am not getting what your asking.

When you subdivide a mesh using Catmull-Clark or similar methods, the vertices from the original mesh don't stay where they are. They get different positions in the subdivided mesh. There's a formula that determines where they go. That's the tricky part of the whole subdivision method. If you don't get that formula right, you don't get a smooth surface. I can subdivide triangles into triangles and quads into quads until the cows come home. But I don't know the right formula that tells me where to put the triangle vertices.

-- I'm not mad at you, just Westphalian.