 | | Re: Parts as volumes (instead of surfaces)
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(...) Wow, good questions. We know that some collision detection is already practical - Eric Olsen demonstrated that over a year ago. But decomposing LDraw parts into convex objects, that would be a trick. Each external box 5 (or pair of box 5's) (...) (22 years ago, 8-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: request for modification (Tracker)
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(...) Wow. Good ideas. Unfortunately, for now, I'll have to file them in with all the other improvements I want to make on PT. There are a few key changes that need to occur before many other things can happen. Steve (22 years ago, 8-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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(...) That's weird - I know I answered your email. No big deal. (...) files already having been done by you and Damien), you're going to work on the rest of the boxes. Anyone else want to help? (...) You *can't* post new versions of official files. (...) (22 years ago, 8-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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(...) [snip] OK, sounds reasonable to me. (...) Yes. (...) [snip more] You understand the usage correctly. Except there's no special tie between a 'mirroring' subfile reference and the INVERTNEXT command. Authors won't explicitly use one to 'undo' (...) (22 years ago, 8-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: Numbers Report
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In lugnet.cad.dev.org.ldraw, Damien Guichard wrote: [snipped a lot of great comments about using different pages on the PT] I totally agree with everything Damien wrote, except that if one only pays attention to the Activity page, older files may (...) (22 years ago, 8-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: Numbers Report
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(...) I think Bernd and Sascha are brothers. Part authors keep LDraw alive. Steve B. has a quite expeditive (if not bureaucratic) response to your legitimate expectings. My advise is: visit the "activity" PT page rather than the "certication" or (...) (22 years ago, 7-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: Parts as volumes (instead of surfaces)
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[ XFUT lugnet.cad.dev ] (...) What's "CSG descriptions"? (...) But they aren't (as you also write). Still, you are probably correct that BFC information in the LDraw parts can be used for collision detection. (...) I think it deserves further (...) (22 years ago, 7-Apr-02, to lugnet.cad.dev.org.ldraw, lugnet.cad.dev)
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| | Parts as volumes (instead of surfaces)
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It has been said that, with ldraw parts, we have the geometry of TLG bricks. This is rather optimistic. Because geometry would be CSG descriptions that allow much more (although slower) than quads and triangles. CSG descriptions allow part collision (...) (22 years ago, 6-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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Hello, Comments below... Travis Cobbs wrote: > In lugnet.cad.dev.org.ldraw, Steve Bliss writes: > >>In lugnet.cad.dev.org.ldraw, Tony Hafner writes: >> >>>In lugnet.cad.dev.org.ldraw, Steve Bliss writes: >>> >>>>>Um... Not to stir the pot or (...) (22 years ago, 6-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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(...) Given the fact that they have to check whether or not a given file has been mirrored, I can't see that the directionality would make a large difference. If everything used CCW, then only mirrored ones would need to be reordered (assuming the (...) (22 years ago, 6-Apr-02, to lugnet.cad.dev.org.ldraw)
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