2013/6/11 Mateusz Loskot <mateusz@loskot.net>
On 11 June 2013 21:12, Adam Wulkiewicz <adam.wulkiewicz@gmail.com> wrote:
> MultiPolygon concept to describe 3D mesh is a good idea. I'd rather provide
> additional concept.

I'm no expert of 3D, but isn't there a better concept for 3D mesh storage,
without redundan vertices and edges, perhaps less topologically fragile than
multipolygon? (I'm just curious).

Of course, typically 3D geometry may be stored in various ways. There can be a set of points/normals/tex_coords but more often geometry is stored as coordinates buffer + index buffer - indexes are defining polygons, which typically are triangles. And in the case of triangles we have a few possibilities. They can be defined as a seqence of triangles (3*N indexes or just points to define triangles), strip (2 + 1*N indexes), fan (1 + 1*N indexes).
And this may be a definition of a SubMesh which some number could be stored together to form a Mesh. There even could be one points buffer for a Mesh and SubMeshes could only store indexes + operation type. Idealy the concept would define that.