 | | Whither Terry Keller?
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Hey all, Does anyone know Terry's status? Is he on vacation, caught up in Real World issues, is he okay? Cheers, - jsproat [f-ups set to lugnet.people -- posted off-topic in .cad.dev to catch attention which I know I'll get flack for...] (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Much better than I used to be. Steve "Never trust anything that can think for itself, if you can't see where it keeps its brain." (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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On Thu, 21 Oct 1999 01:07:30 GMT, "Gary Williams" <graywolf@pcpros.net> wrote: [clipped good stuff] (...) You are making sense, it is a valid issue, I've been missing the boat on inversion for awhile now, and I'll update the document. Should there (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Sometimes, life just sucks. ;) Have a great weekend! (...) OK. (...) Both of these. (0 CERTIFY with no tags would be a syntax error, IMO.) (...) Define necessary. ;) CERTIFY is not absolutely required, but it is logical and useful. The other (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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The proposal has been updated, with changes from Lars and Gary, some additional definitions, and a new section of parts guidelines. See it at (URL). The revision marks (along the left margin) will be maintained until we've got a final document, (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Yes. How are you on travel? :-) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Several replies to CLIPPING / WINDING
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(...) Sorry, you are right here. I allways think in some form of winding (CW or CCW) so this one slipped me, once again sorry, you are right. Can't assume nothing. (...) what I said was relative to my way of thinking, without the previous sentence, (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Thanks. (blushing) Can that be translated into paying work? (...) That's because it's written by someone who keeps the matrix-math reference material very close at hand whenever he's got to actually go under the hood. (...) Issue 1: should the (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Object Orientation & DAT files & CLIPPING/WINDING
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(...) You are right. Or more precisely, I was wrong. Matrix-based *inversions* are not required. But matrix-based mirrorings will be necessary, for asymmetric primitives, like 1-4cyls.dat. (...) I was thinking about some approach that would map (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Gary Williams wrote in message ... (...) a (...) Well, what I meant to say is: Matrices with negative determinants may be used for mirroring a part, BUT the matrix should never be assumed to perform the actual inversion. If a matrix has a negative (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote in message <380e2b8e.12563517@l...et.com>... (...) An orientation matrix doesn't contain enough information to invert an asymmetrical part; if you assume it does, this would result in a part with a mirrored shape. I propose that (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote... (...) Good idea, it's hard to discuss in so many threads. (...) Thank you for the well-written summary. Well-written because I agree with 99% of it ;) (...) Yes, too bad I'm off for an Internet-free :( 4-day week-end at the sea (...) (25 years ago, 21-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) I would. This is WAY better than most of the crap requirements I have to rationalize into some semblance of something to keep paying customers happy. Very nice work, Steve. Written in a way that made it understandable to someone that doesn't (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Object Orientation & DAT files & CLIPPING/WINDING [DAT]
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Steve Bliss wrote... (...) "Hey, (...) But it *is* compatible with LDraw! You left out my example (which BTW had the INVERT placed incorrectly :-), so I'll repeat it. stud2.dat is the hollow stud used on technic bricks. It uses two cylinders: 1 16 0 (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Line in the Sand
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OK, we've been discussing how to best extend the LDraw language to allow rendering engines to do backface-culling. We've got a pretty good agreement on most of what is needed. I think it would be productive, at this point, to work from a complete (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Minifigure Torso Generator
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Hi , at 19.10.99 Jonathan Wilson wrote in a mail: JW> The password is modelling (mabie that should be in the faq? Maybe. There I had realy not been looking for a password, my fault. JW> -- Jonathan Wilson wilsonj@xoommail.com JW> (URL) Joachim. (URL) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Several replies to CLIPPING / WINDING
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(...) No. With current files, you don't know, so you can't assume anything. (...) No, inversions are common. (...) Right. So non-wound-up files can't be backface culled. I don't see what you're getting at here. (...) But we don't get to specify what (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Several replies to CLIPPING / WINDING
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(...) This is a problem of the current design (the one beeing used now). You didn't knew in the past, because you didn't have the 0 INVERT meta-command. So you can only assume it' NOT inverted. If for some reason, it is inverted, then the old .DAT (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Fixed #3228a is ready
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I'm suffering from burnout working just half-time and therefore I have some time over. Had to look up the word "tapered" in my dictonary. That's my only faint objection. Thanks for your trouble, /Tore (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Several replies to CLIPPING / WINDING
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(...) That's not true. If a super-file is not certified, then there's no way to tell if the subfile is normal or inverted. So when a file is referenced by a non-certified super-file, it can't be clipped, even if the referenced file is certified. (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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