 | | Re: HOSER problem
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Ryan, Remember that first you need to place the hose ends in the model yourself. Then determine the x,y,z of the "top" of each hose end. These will be the endpoints for hoser. Add the control points, and hoser will calculate the position and (...) (25 years ago, 27-Oct-99, to lugnet.cad.dev)
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| | Re: Minifig Fire Helmet (3834)
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Hi For the parts with some regularity (helmets etc) I draw them up on graph paper, showing three projections, converting the curves to polygons/prisms, using judgement as to the level of detail. Circular sections follow the 16-agon standard, curves (...) (25 years ago, 26-Oct-99, to lugnet.cad.dev)
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| | Re: LDraw pieces printing
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Sorry for not replying sooner, but I had to re-format my hard drive for the second time in a year. Anyway, assuming LUGNet actually lets me post this time, my parts catalog can be found at (URL) this helps, --a signatureless (due to the web (...) (25 years ago, 26-Oct-99, to lugnet.cad.dev)
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| | Re: LDraw pieces printing
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(...) LDAO does have a catalog print function, which is a quick way of printing the bricks. Or you can look for Patrick's printable catalog, which has a better/more compact layout. You can find a link to the catalog by searching lugnet.cad.dev for (...) (25 years ago, 25-Oct-99, to lugnet.cad.dev)
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| | Re: LDraw pieces printing
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(...) That's spiffy. Snarf away! Steve "Never trust anything that can think for itself, if you can't see where it keeps its brain." (25 years ago, 25-Oct-99, to lugnet.cad.dev)
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| | Re: LDraw pieces printing
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(...) Steve Bliss has this page: (URL) isn't optimized for printing, but I snarf myself a copy from time to time anyway... (I hope that's okay, Steve!) Arguably, you could download the pages, re-format the tables so that you double up the skinnier (...) (25 years ago, 25-Oct-99, to lugnet.cad.dev)
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| | LDraw pieces printing
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Heya all ! Where is the best way to print the whole LDraw pieces catalog ? I mean I want print all pieces and I don't know from where may I print them. From VEC catalog in LDraw or from somewhere on Internet ? Thanx. Rene e-mail: (...) (25 years ago, 25-Oct-99, to lugnet.cad.dev)
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| | Re: Mindfest
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(...) Hi Larry. Be there in a few minutes. :) (25 years ago, 23-Oct-99, to lugnet.general, lugnet.robotics.events, lugnet.cad.dev, lugnet.admin.general)
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| | Mindfest
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Coming at you FROM the MINDFEST floor... Put it this way, Mindfest is a BLAST... More later. John Van Z will be demoing Lugnet and the CAD related stuff (LDraw format files, LDLite, L2P, running POVRay, Datsville and the Datsville explorer at 10 AM (...) (25 years ago, 23-Oct-99, to lugnet.general, lugnet.robotics.events, lugnet.cad.dev, lugnet.admin.general)
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| | HOSER problem
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This isn't urgent(I won't be able to do anything about it until Sun. or Mon.), but I'd appreciate it if anyone could help me out here. I have been working with Hoser a lot lately, but tonight I am having a problem. I am trying to get 282, -7.8, (...) (25 years ago, 23-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Good catch. I've been wondering how to describe/differentiate the "calling point" or "current environment" idea. I'll put your update in the doc. Steve "Never trust anything that can think for itself, if you can't see where it keeps its (...) (25 years ago, 22-Oct-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve: (...) Good work. I have one comment/clarification/question: (...) has disabled clipping at the "calling point" for this subfile. The current wording _could_ be interpreted as "somewhere in the file". Play well, Jacob ---...--- -- E-mail: (...) (25 years ago, 22-Oct-99, to lugnet.cad.dev)
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| | 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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| | Re: Object Orientation & DAT files & CLIPPING/WINDING
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(...) Great! (...) It's local when you look at it in the .DAT where it is used. It's effect is NOT local, when you are looking from the renderer program's view, because it has to keep track of the current invert state. The INVERT meta-command only (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Object Orientation & DAT files & CLIPPING/WINDING
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(...) Yes it is. (...) The reference of the current GLOBAL state is passed down the file-reference tree, YES. (...) Correct. (...) NOT the FILE, but the RENDERING PROGRAM ! (...) Agreed. (...) By default would be CCW. (...) YES and NO. The internal (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Object Orientation & DAT files & CLIPPING/WINDING
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(...) If by default you always use the same winding, then you can know the orientation of the polygon on the fly. IF you mix both you will have a hard time, because you are mixing or reference. (...) That I agree! but my NOTE (suggestion) to pair (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Several replies to CLIPPING / WINDING
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(...) Great ! (...) Don't be pessimistic ! As soon as people see that their models render twice as fast, they will start using the new features. And a utility to make the optimization job easier would make a big difference, to all the lazy people ;) (...) (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 can be done, but you will probably suffer a performance hit, because, most hardware, just use a bit, to keep track of the state. Just minimize the use of the 0 CCW and 0 CW meta-commands, to boost performance. When optimizing existent or (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Several replies to CLIPPING / WINDING
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(...) By candidate, I meant, someone could optiomize it, a place a 0 CLIPPING ON meta-command on it, and get some benefit. If you use enable clipping, but you have no graphic primitives in your file (assuming clipping is stryctly local), than you (...) (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, I said that, to be used when optimizing the existent files, not when rendering the optimized files. (...) I never said that ! (...) I think that depends on the host processor that you have and your specific graphics board (2D/3D) ;) (...) (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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| | Re: Object Orientation & DAT files & CLIPPING/WINDING
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(...) Yes the coded inversion is needed, for one big reason: The clipping-ready parts library must be compatible with non-clipping rendering programs, such as LDraw. So the inversions need to occur in the real commands, not in the clipping-extension (...) (25 years ago, 19-Oct-99, to lugnet.cad.dev)
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