 | | BFC revisited
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I'm looking for a model file that utilizes BFC-certified parts to test backface culling in the CAD application I'm developing. Unfortunately, as near as I can tell, only 13 part files have a BFC-related comment, and on top of that, they're not (...) (23 years ago, 16-Aug-01, to lugnet.cad.dev)
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| | Re: Datsville Overview Map (Was: Boundary Box Utility)
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Here is another idea for optimizing dat models. It isn't a very good one, but, it just seems more realistic than what I said earlier (writing a utility smart enough to optimize an entire model). One could write a utility that presents each polygon (...) (23 years ago, 16-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: LDGLite bug report (yes, one more)
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Don: (...) Definitely. (...) Yup. :-( Jacob (23 years ago, 16-Aug-01, to lugnet.cad.dev)
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| | Re: Datsville Overview Map (Was: Boundary Box Utility)
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You could specify (or firmly recommend) in the future that models must posses boundary boxes measured in degrees of tilewidths (or half-tilewidth's). Anything less than that would be considered a prop. Props would then be dealt with seperately, just (...) (23 years ago, 16-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: Datsville Overview Map (Was: Boundary Box Utility)
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Of course, the same could be accomplished in LDraw. Mike (...) (23 years ago, 16-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: Datsville Overview Map (Was: Boundary Box Utility)
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This is great! An idea: if bitmaps were created of the model from 6 directions (left, right, bottom, top, front, back), you could texture map those to the boundary box (inside, to make sort of a 6 point, 3 plane cross intersecting in the center) and (...) (23 years ago, 16-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: Help Needed: Boundary Box Utility
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(...) Don't thank me, thank Lars. It's mostly his code. Now if only he'd release some more of it... ;^) (23 years ago, 15-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Datsville Overview Map (Was: Boundary Box Utility)
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That's it for tonight. I bboxed the parts of Datsville and labelled them after their names in town.dat (URL) (19 Kb) Next step: adding *a few* key buildings to help orientation. Tomorrow... /Tore (23 years ago, 15-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: Help Needed: Boundary Box Utility [DAT]
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Thank you very much! I tested it on "my home" in Datsville, and it worked perfectly well, exactly as I want it to. With these two lines and viewed in L3Lab, any flaws would have been discoved: 1 16 0 0 0 1 0 0 0 1 0 0 0 1 ttore.dat 1 47 0 0 0 1 0 0 (...) (23 years ago, 15-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: Help Needed: Boundary Box Utility
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(...) [snipped: How-To instructions for making this from L3Input.cpp] (...) Ok, I decided to give this a shot during my lunch break. I hacked ldglite to bits and the results (source and win32 exe) should be here. (URL) to work for 3001.dat, but (...) (23 years ago, 15-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | datsville changes...
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1.I have a newer version of Datsville Petrollium than the one included with the current Datsville MPD (this version is the version that was featured as the ldraw.org model of the month & at kidvention) & since I hold the copyright on the model I (...) (23 years ago, 15-Aug-01, to lugnet.cad.dev)
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| | Re: LDGLite bug report (yes, one more)
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Haaaaaa!! That's a funky image! Datsville at hyperspeed! You could save that image in case you want to mix the Datsville and Star Wars themes. :) Mike (...) (23 years ago, 15-Aug-01, to lugnet.cad.dev)
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| | Re: Datsville continuation - more ideas
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Hey, no problem. I just browse Lugnet every once in a while to see if any progress on such a utility exists. I notice there has been little mention of such a thing in the newsgroups in the past. It would be a "cool" toy. Thanks, Mike (...) (23 years ago, 15-Aug-01, to lugnet.cad, lugnet.cad.dev, lugnet.cad.ray)
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| | Re: Datsville continuation - more ideas
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(...) If I understand the question correctly, and from my understanding of how a ray- tracer works, Pov-ray must keep all polygon data while it renders since it "traces" all the light rays, even those that you can't see (inside of a brick). It (...) (23 years ago, 14-Aug-01, to lugnet.cad, lugnet.cad.dev, lugnet.cad.ray)
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| | Re: Help Needed: Boundary Box Utility
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Thank you Don. I will give it a try tonight, but I'll probably fail. I'll let you know. I need it for two purposes: 1. Making an overview map of Datsville from the subdivision in town.dat. (Maybe post-editing of the Y and E values by hand). 2. (...) (23 years ago, 14-Aug-01, to lugnet.cad, lugnet.cad.dev)
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| | Re: LDGLite bug report (yes, one more)
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(...) It may be OpenGL implementation specific because I remember the Mac version of ldglite had a similar problem. I've run the datsville mpd file on a few Windoze machines and it clips the model at the far plane, but doesn't add the garbage you (...) (23 years ago, 14-Aug-01, to lugnet.cad.dev)
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| | Re: LDGLite bug report (yes, one more)
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Don: (...) Using the "l3" parser: $ time ldglite -ms -i1 -s0.2 -l3 town.mpd ... 281.790u 21.700s 8:48.81 57.3% 0+0k 0+0io 2290pf+0w $ A total of 303.49 seconds. The result: (URL) the "ld" parser: $ time ldglite -ms -i1 -s0.2 -ld town.mpd ... (...) (23 years ago, 14-Aug-01, to lugnet.cad.dev)
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| | Re: terrain in LDraw
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Actually, I was hoping to incorporate .DEM files into LDraw. At first glance I thought your utility could do that. It does so, but it generates studs instead of just plain polygons. Now, I can do this just as easily by doing a search over at the (...) (23 years ago, 14-Aug-01, to lugnet.cad.dev, lugnet.build.arch)
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| | Re: New Construction Toy In LDraw Format!
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(...) Cool. Any chance that you might do the K'nex figure? (23 years ago, 14-Aug-01, to lugnet.cad.dev, lugnet.general, lugnet.build)
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| | Re: LDGLite bug report (yes, one more)
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Don: (...) Okay. Doing that now. The errors in the ortographic projection rendering seem to be independent of the parser. You can see an image at: (URL) corresponding command line is: ldglite -ms -i1 -s0.2 -j -l3 ~/Projekter/LEGO/Dat...D/town.mpd (...) (23 years ago, 14-Aug-01, to lugnet.cad.dev)
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