Mesh Component Iteration

Meshes can be handled nicely through their wrapped MFnMesh methods, but in addition it is possible to quickly iterate its components using very pythonic syntax:

m = Mesh()
PolyCube().output.mconnectTo(m.inMesh)
average_x = 0.0
for vit in m.vtx:                  # iterate the whole mesh
        average_x += vit.position().x
average_x /= m.numVertices()
assert m.vtx.iter.count() == m.numVertices()

sid = 3
for vit in m.vtx[sid:sid+3]:       # iterate subsets
        assert sid == vit.index()
        sid += 1

for eit in m.e:                    # iterate edges
        eit.point(0); eit.point(1)

for fit in m.f:                    # iterate faces
        fit.isStarlike(); fit.isPlanar()

for mit in m.map:                  # iterate face-vertices
        mit.faceId(); mit.vertId()

As it has only been hinted at in the example, it should be clarified that all shortcuts supported by Components, i.e. m.cf[1,3,5] will work with iterators as well.