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 CAD / *44077 (-5)
  Re: Colinear Vertices
 
(...) It depends on what your threshold is but taking the difference (as you do in a cross product) of two big numbers is less accurate (very much so sometimes) than taking the difference of two smaller numbers. Even without this issue it means that (...) (18 years ago, 9-Dec-08, to lugnet.cad)
 
  Re: Colinear Vertices
 
(...) No, I just take the cross product, and if the length (squared) is 0, I give an error. I don't see how normalizing the length of the two vectors that I feed into the cross product would improve things much here. Sure, it might mean that my (...) (18 years ago, 9-Dec-08, to lugnet.cad)
 
  Re: SR 3D Builder version 3.2.2.3 just released
 
(...) Wow! Very impressive! I will definitely have to try it out. A couple of questions: are MLCAD's keyboard controls supported? Can I export back into LDR/MPD format? What does the model tree look like? -Mike (18 years ago, 9-Dec-08, to lugnet.cad)
 
  Re: Colinear Vertices
 
--snip-- (...) I assume that you divide by the vector lengths first (as in normalise them before taking the cross-product) but if you don't then you should. Tim (18 years ago, 9-Dec-08, to lugnet.cad)
 
  Re: Colinear Vertices
 
(...) If they're on a curved surface, you'll get higher quality out of LDView half the time if you split them into triangles. (I say half the time, because OpenGL splits them into triangles in order to render them, and half the time they'll be split (...) (18 years ago, 9-Dec-08, to lugnet.cad)

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