Math_Geometry_3D

Hi all there :) Just some quite simple functions rewrote from math analytical geometry formuleas: http://grincheux.codelutin.org/~monnier/Geometry.html Would you think it would have its place in Pear? If yes, perhaps its name could be "Math_Geometry_3D" (3D is shorter than 'Analytical' and with computers, geometry is always analytical, moreover analytical geometry could also be 2D) There are only 2/3 functions really interesting, which are at the end. [Finding the angle between 2 adjacent facets in a 3D modeling] There should also be functions for translation, homotety, rotation, etc, but I didn't had any need for those yet, so... (lol those formuleas correspond only to the first 3 pages of the analytical geometry book I have) ++Cheers