I have the following geometric problem. The parameterisation of a surface is given in the UxV domain. I have another surface in the parameter domain SxT. I have also some (u,v),(s,t) pairs. How may i find a general map form UxV to SxT such that it satisfies f(u,v) = (s,t) for all (most) of the given pairs. (I need to find a point on surface S(SxT) corresonding to the point of surface S(UxV).) Has OCC any function for this task. Or has anyone any tip how and where to start?