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SW and comical sketching (part 3)

Question asked by Philippe Carette on Jun 28, 2011

When a curve is tangent to another, I learned, when I was younger, that there are 2 possibilities for such tangent : a curve has 2 possible orientations, in a 3D affine space.



But SW designers haven't learn such basic concept.


So a relation of tangency give one choice, and get by with that....


I suggest that you spend your money with professional developments.


This begins with correct basic concepts with the affine geometry in affine spaces of dimension 3.


Message was edited by: Richard Doyle - Removed potential offensive word.