Hi,
I have commited some changes to grass51:
- should be possible compile with current MAIN branch g50 (merged release)
- vector 2D topology is available ( v.build, Vect_build() )
- d.what.vect - for 3D TIN can report z coordinate, GUI for attributes
- d.vect - display area, topology id, directioin
- other news are in grass51/CHANGES
Changes in vector library and modules are frequent and
so that is not area for other developers yet.
But in other parts I whould welcome other developers in grass51.
Radim