 | | Re: Parts as volumes (instead of surfaces)
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(...) Stud4 primitive could be convex-decomposed just as Ring4 primitive is today. More generally, just as any LDraw surface is convex-decomposed with just triangles and quads (3,4 points respectively), I guess any LDraw volume can be (...) (22 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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(...) Sorry, I must have been reading more into your example than you intended. (...) It's the former: the author intends to make a reflected object, but not an inverted object. (...) It depends on who (or what) you want to keep things simple *for*. (...) (22 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: Parts as volumes (instead of surfaces)
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If you're interested, take a look at my old Rayshade libraries that made the bricks from scratch using CSG. I'm especially fond of the L3G0 40-tooth technic gear. I've thought it would be nice to have "bounding boxes" for the bricks, for collision (...) (22 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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Maybe I'm more confused now, or less who knows. But I don't think I made what I was trying to say clear in that last post. So here I am replying to myself... :) (...) That last sentance doesn't really get across what I was trying to say I think. (...) (22 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: [Parts Tracker] More BFC Primitives
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Steve Bliss wrote: > In lugnet.cad.dev.org.ldraw, Kyle McDonald wrote: > [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 (...) (22 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | 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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