len3d

摘要： For triangles, as well as other planar shapes, there's an affine mapping from parametric space to object space, said M.In parametric space, we know the parametric coordiantes for 3 triangle corners are (u0, v0), (u1, v1), (u2, v2) respectively.While in object space, the 3D coordinates for 3 tria 阅读全文