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 CAD / Development / 7245
  Re: The use of type 5 lines for smoothing of objects.
 
(...) Well, I added an initial go at Martijn's suggested algorithm to LDView (with some modifications here and there), and the results look extremely promising. Here is a sample: (URL) that this was rendered with Primitive Substitution disabled, so (...) (23 years ago, 20-May-02, to lugnet.cad.dev)
 
  Re: The use of type 5 lines for smoothing of objects.
 
(...) (with (...) the (...) helmet, (...) entirely (...) I was able to reproduce the exact glitches you saw. They are due to round off errors in the coordinates. Your map sees a difference e.g. between point (1.9999,0.0000,0.0000) and point (...) (23 years ago, 20-May-02, to lugnet.cad.dev)
 
  Re: The use of type 5 lines for smoothing of objects.
 
(...) I think I listed most of them, but here are the ones I can think of: Calculated per part, not per dat file. Only calculated when an edge is an exact match with a type 5 line; this requires some extra work to accomplish. Completely ignore the (...) (23 years ago, 20-May-02, to lugnet.cad.dev)
 
  Re: The use of type 5 lines for smoothing of objects.
 
(...) If you ignore the type 5 control points, what points do you use to generate the cross products? I would think to generate "fair" lengthy vectors you'd have to use the center of gravity point for the adjacent quads or triangles. Otherwise you (...) (23 years ago, 21-May-02, to lugnet.cad.dev)
 
  Re: The use of type 5 lines for smoothing of objects.
 
(...) I only use the actual (un-normalized) normals of the faces adjacent to the type 5 line. It's a little more complicated, because when a single point has multiple type 5 lines radiating out from it, the surface normal I compute at that point (...) (23 years ago, 21-May-02, to lugnet.cad.dev)

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