 | | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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Chris Dee wrote in message ... (...) partly (...) plastic. (...) is a (...) The algorithm I came up with yesterday will handle such cases. Basically for every face in a polygon, I'll pass a ray through it and count the number of polygons that it (...) (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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John VanZwieten wrote in message ... (...) I ran the search for 'backface culling', but it came up with four un-related articles. :( -GW (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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John VanZwieten wrote in message ... (...) fix (...) worry (...) file. (...) Thanks for the tip, I'll run a search. Actually I think I've worked out in my mind an automatic clockwise-sorting algorithm. It will fail for primitives like studs which (...) (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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(...) I'd be mighty impressed, too, if you could do this automatically. For solid polyhedra, it's not too difficult as you can assume that the origin of the solid is within the material, but most Lego parts are re-entrent (ie. partly hollow), so (...) (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | (canceled)
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