 | | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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(...) The main discussion was on the mailing list. I can check my home machine, to see if I have it archived. Anyone else keep copies of the L-CAD messages? Steve (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | Re: ldraw.org up and running again (Was: ldraw.org down until Monday)
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(...) Hey, a huge "BTW" round of thanks for Jacob and Tim and Todd and anyone else in the admin role...the online world wouldn't run without you! :-, Cheers, - jsproat (25 years ago, 27-Sep-99, to lugnet.cad.dev.org.ldraw)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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(...) Actually, most of mine say "not CW-Compliant", as a notice to anyone coming along who wants to clean up the library. Steve (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 couldn't find anything either, maybe the archive has a limit or it was discussed in the L-CAD list ? The only related message I found was (URL) but the discussion started several months before that. Leonardo (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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(...) That should have read, for every polygon in the element or primitive. (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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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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