Like DaSalo said in another thread, you can use a free form scan by reading a text file that contains points, or just reading file to measure points. It's easy on a plane, not on a curved surface without doing some maths...
I do it sometimes, the major problem is to have a math def of the surface, then derivate it to calculate the tangent, and extract the vector hit... Sometimes it's funny !
Like DaSalo said in another thread, you can use a free form scan by reading a text file that contains points, or just reading file to measure points. It's easy on a plane, not on a curved surface without doing some maths...
I do it sometimes, the major problem is to have a math def of the surface, then derivate it to calculate the tangent, and extract the vector hit... Sometimes it's funny !
