 | | 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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| | Re: anyone else notice this?
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Hello Jonathan, (...) I was thinking of doing that one also. Planning to strart it about halfway October. (...) Mm, too big for me right now, I think I leave that up to someone else. But I could donate the early stage of the curved track file, (...) (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | ldraw.org up and running again (Was: ldraw.org down until Monday)
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As I promised Friday: ldraw.org is up and running again thanks to a friend of mine who installed a new kernel on hugin. Play well, Jacob PS: I have recieved a message from the Danish backbone operator, warning me that the connection to Risø will be (...) (25 years ago, 27-Sep-99, to lugnet.cad.dev.org.ldraw, lugnet.cad.dev, lugnet.cad, lugnet.announce)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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(...) If you run a LUGNET search on backface culling, you'll find extensive discussion of this. Some parts (mostly done by Steve Bliss) have a "0 CW- Compliant" tag, which means you can use backface culling on them. It would be pretty amazing if you (...) (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | Part 2409
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Heya all ! Where can I download part number 2409 and all other parts ? I need this part for my PD model for Datsville. Where can I get all LDraw parts ? (It was on geocities but now I can't find it.) Thanx. Rene e-mail: virsik@sco.svf.stuba.sk (25 years ago, 27-Sep-99, to lugnet.cad.dev)
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| | Hidden surface removal, and vertex order in part/primitive DAT files
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I performed some hidden surface removal tests today (I should have been working on other things, like the inventory file cleanup utility...) and it appears that there isn't a standard order for listing vertices in DAT files (I only tested a few (...) (25 years ago, 26-Sep-99, to lugnet.cad.dev)
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