 | | Re: BFCFixer
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(...) Of course, it's that simple - thanks. Except some of the most basic LDraw parts (regular bricks) fail this test because the studs are "stuck on" a complete quad, rather than a surface peppered with stud-sized holes. Chris (20 years ago, 4-Feb-05, to lugnet.cad.dev)
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| | Re: BFCFixer
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(...) Would you guys want a code repository for this? I have a SVN repo set up that I could easily add this as a project... Just LMK! (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: BFCFixer
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(...) Ask, and ye shall receive. (URL) code is included (hopefully my crude hackings can be deciphered by others) as well as an executable jarfile in the dist/ subdirectory. Enjoy. If you find any major bugs, let me know, and I'll see what I can do, (...) (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: BFCFixer
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(...) Oh yeah! Let me at it. :) Steve (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: BFCFixer
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(...) The way it's been done before is to draw rays from the origin outward. The first polygon a ray crosses is facing inward, and the last polygon a ray crosses would be facing outward. The ones in between *should* alternate facing in and out. Do (...) (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: BFCFixer
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(...) I think it can be done for simple objects, by choosing a random winding for 1 polygon, then processing all touching polygons so they're wound the same way (when looking from the same side - out ot in). This would produce a result that is (...) (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: BFCFixer
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(...) I may be being dense here, but I dont understand how this can be done programatically. The point of BFC is to allow renderers to understand if a particular polygon is facing the camera or facing away from it. If all polygons are wound (...) (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | BFCFixer
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(...) Well, I had some spare time today... so I wrote one. It goes through a single LDraw part file and reorients all the polygons in it to have the same winding. It comprehends the notion of subfiles and already BFC compliant parts, and puts the (...) (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: Parts editing made easy, anyone?
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(...) <snip> (...) Yes, I use MLCad in conjuction with LDDP/LDView for parts authoring. My method is to build the part in MLCad since it does all the rotaion calculations for me and then clean in up and fine tune ithe part in LDDP/LDView. As far as (...) (20 years ago, 3-Feb-05, to lugnet.cad.dev)
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| | Re: Parts editing made easy, anyone?
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(...) Hi Stefan: I'm chiming in late here, but I've crafted at least a few unofficial LDraw parts, and I thought I might offer some thoughts. My original composing tool of choice was the shareware text editor "PC-Write v4," which no longer appears (...) (20 years ago, 2-Feb-05, to lugnet.cad.dev)
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| | Re: Bricksaic version 0.1.0
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(...) Xposted to cad.mlcad Perhaps Michael L. could speak up about whether MLCad reads that file, what the proper superset of colors ought to be and other topics. (20 years ago, 1-Feb-05, to lugnet.build.mosaic, lugnet.cad.dev, lugnet.cad.mlcad)
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| | Re: Bricksaic version 0.1.0
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(...) Bricksaic is using the ldconfig.ldr in it's directory but the problem with the unused colors seems to be that MLcad does not recognize the following colors: Reddish_Brown, Stone_Gray, Dark_Stone_Gray, and Dark_Green. there may be more colors (...) (20 years ago, 1-Feb-05, to lugnet.build.mosaic, lugnet.cad.dev)
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| | Re: Bricksaic version 0.1.0
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(...) Larry, I looked into what you said and it is correct: Bricksiac is using the ldconfig.ldr file in it's installed directory and MLDraw is using a file named the same ldconfig.ldr in it's installed dirctory. Then if one of the other has a (...) (20 years ago, 31-Jan-05, to lugnet.build.mosaic, lugnet.cad.dev)
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| | Re: Contributor's Agreement
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(...) And that's a good thing. Come on now. The whole ldraw library is a derivative work and we've already lost contact with the original author, and many subsequent part authors, but they still get credit for a job well done. Good work! Keep it up! (...) (20 years ago, 31-Jan-05, to lugnet.cad.dev.org.ldraw)
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| | Re: Contributor's Agreement
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(...) ... but not without acknowledging those works as yours. (...) Chris (20 years ago, 31-Jan-05, to lugnet.cad.dev.org.ldraw)
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| | Re: Contributor's Agreement
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(...) Among other things, yes. (...) Also that. Jacob (20 years ago, 31-Jan-05, to lugnet.cad.dev.org.ldraw)
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| | Re: Parts editing made easy, anyone?
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(...) Oh, yes. Definitely. (...) :) [snip a lot of stuff with which I agree] (...) nod, yes. That makes a lot of sense. (...) Very cool. :) Steve (20 years ago, 31-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) no, he didn't. when I last met him at legoworld 03 he promised to do it but actually never did (as far as I remember at the time windz had an error quote of 2-3 percent - too much from his point of view :-(( w. actually I'll add the (...) (20 years ago, 31-Jan-05, to lugnet.cad.dev)
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| | Re: Contributor's Agreement (Was: New Part...)
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(...) Basically the all this CA is telling you is that you need to agree to release your part under the Creative Commons Attribution Licence for us to accept your part for distribution. The Creative Common Organization is kind enough to provide a (...) (20 years ago, 31-Jan-05, to lugnet.cad.dev.org.ldraw)
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| | Re: Contributor's Agreement (Was: New Part...)
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(...) For example: "The right to create derivative works of the Work" Does that mean altering the works (in this case: editing my dat files and make updates on them) without trying to contact me first? Or does it just mean works that uses my works? (...) (20 years ago, 31-Jan-05, to lugnet.cad.dev.org.ldraw)
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| | Re: Rendering implementation details
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(...) It has been done before. Ildefonso Junior Zanette wrote a program called Windz, I use it all the time when I author parts. I can't remember if he publically released it. -Orion (20 years ago, 30-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) It doesn't matter, actually. In one way or another, optional lines are required. In general, the "magic halo" effect only highlights _outside_ edges, but for a non-convex object, that won't necessarily be adqeuate. You can't even get away with (...) (20 years ago, 30-Jan-05, to lugnet.cad.dev)
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| | Re: Nominations 2005 SteerCo -- Tore Eriksson
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(...) Sorry, but I have to decline. Maybe next year. Thanks for the nomination though! /Tore (20 years ago, 30-Jan-05, to lugnet.cad.dev.org.ldraw)
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| | Re: Rendering implementation details
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(...) Ok, I drew a better picture (2 planes in space and a floating eye) and I'm starting to see. Maybe you're onto something. It takes 2 surface normals and one point on the edgeline to divide space into 4 quadrants. Then you only need to figure (...) (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | Re: BMP2DAT question (problem?) [DAT]
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(...) If I understand the problem correctly, you have to scale down the output file. This can be easily done by pretanding that it is a sub-part Rename it to pattern.dat for example. Then create a new part that calls to that pattern with the line: 1 (...) (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | BMP2DAT question (problem?)
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Hi, I made some stickers for one of my trains. Now i'm making building instructions for this train and would like to add the stickers i made in the LDRAW design. Therefore i use the BMP2DAT utility found in LDAdd-On from Steven Bliss. This works (...) (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) What you are describing is in fact a very old and basic edge rendering algorithm, which can be found in most detailed textbooks on computer graphics. CAD style and wire frame rendering went out of style during the 90's, so some recent "fancy (...) (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | Re: Parts editing made easy, anyone?
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Thanks for your suggestions, the message I received is: "Yes, a good and useful translator would be appreciated." One brief comment on the issue of whether we want clean, compact and well structured files or not: of *course* we want clean files! A (...) (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | Re: l3p as open source
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(...) L3P is available for the Mac and Linux.... Kevin (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) Actually, one can bring the number of transformations down to 1 for the entire _object_. Interesting what can happen when an idea sits in the brain and percolates for a couple of days. A new idea I had was to just transform the camera position (...) (20 years ago, 29-Jan-05, to lugnet.cad.dev)
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| | Re: Bricksaic version 0.1.0
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(...) I ran into this too while betatesting. If you were using, for example, MLCad, it might be a problem with the color definitions that MLCad is aware of. Bricksiac is getting its color info from the ldconfig.ldr file in the install dir, I think. (...) (20 years ago, 28-Jan-05, to lugnet.build.mosaic, lugnet.cad.dev)
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| | Is there someone interested in making icons for me
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Hello, I'am working on LD4DModeler V2 (see (URL) i want to make it better in every aspect over V1 am looking for some artist who is willing to make some (mostly) 16x16 pixel icons for me. I think people who used V1 know why I rather don't do it (...) (20 years ago, 28-Jan-05, to lugnet.cad.dev)
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| | Re: l3p as open source (was: Re: Anatomy of a POV file (e.g. L3P suggestions))
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(...) I knew I'd forgotten something in here! That function sounds interesting and could help a bit, but I'm not sure it's possible to turn an .inc around, but I'll look into it when I get the time. Thanks -NB (20 years ago, 27-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) I don't see it. Are you sure this works in the perspective projection? Because I can't quite figure out what the magic view vector is in that case. I think you'd need to calculate one view vector for each edge endpoint, which brings the number (...) (20 years ago, 25-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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Okay.... having had a day to think about it and a night to sleep on it, I think I've figured out something.... But it would only work if the optional lines were incident to edges of polygons that are part of the object being drawn. I'm not sure if (...) (20 years ago, 25-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) I'm not 100% sure, but I believe most (if not all) of these outlining algorithms expect you to know the difference between the front faces and the back faces. It could be that they could be adopted for use when you don't have this information, (...) (20 years ago, 25-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) I'm not sure it's possible to implement for real without serious slowdowns. It might be possible to implement in a vertex program, but I haven't studied vertex programs, so I really don't know. (I'm pretty sure you can't throw out a vertex (...) (20 years ago, 25-Jan-05, to lugnet.cad.dev)
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| | Re: Cross platform GUI
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(...) The look and feel is one of the reasons why I rejected GTK (...) To me, compile times are a non issue. However the non-free nature of Qt leaves a bad taste in my mouth (and I not even a Open Source zealot). I can however develop a Qt based (...) (20 years ago, 25-Jan-05, to lugnet.cad.dev, lugnet.off-topic.geek)
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| | Re: Experimenting with camera.dat and look_at.dat
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(...) It would be nice if there were also a part used to store points. It would then be declared at the end of the .pov file as a uniquely named vector. (20 years ago, 25-Jan-05, to lugnet.cad.dev)
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| | Re: Rendering implementation details
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(...) You're right about the performance hit. We've discussed this issue previously on lugnet, because quite a few of the renderers out there use opengl (ldview, leocad, ldglite, Mac Brick Cad...) Source code is available for all of these if you (...) (20 years ago, 25-Jan-05, to lugnet.cad.dev)
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