Mesh toolbox for matlab (Voronoi and non-convex polygon)

I am looking for a Matlab's toolbox for meshing a geometry. My question is very general because I want to mesh a geometry using voronoi decomposition or concave polygons.

For meshing my geometry using Voronoi decomposition, I have checked three solutions:

• matlab's functions but I want to obtain a clipped mesh and the matlab's tools didn't provide this kind of mesh
• MPT3 but the definition of the mesh is difficult to use and I spend a very long time only for extract a correct definition of the geometry (right order of the vertices for each polygon...)
• PolyMesher toolbox which seems to work well (even with non-square geometry) but sometimes the geometry don't fit well the bounding-box and remains some troubles with my following computation (mechanical computation).

If you have any idea of a simple toolbox (or simple code) for meshing simple geometry (without the Mapping toolbox ...).