 | | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) I think the original suggestion that we mention that it is in row-major format is valid. I agree that the fact that OpenGL (almost certainly one of the top two most used 3D APIs on the planet) uses column major format is a good reason to (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) The "so-what" would be that I, as someone who will eventually read in these files to create OpenGL renderings of them, would expect the matrices to be in column-major order, unless explicitly stated otherwise. Rob (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) Umm, so what? LDraw is not, and should not, be dependent on OpenGL. Having worked with transformation matrix in both formats, I find the row-major format much easier to hand-edit than column-major organization. At least for LDraw-type usage (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) Page 16 of the OpenGL spec, v2.1 states: "Only convex polygons are guaranteed to be drawn correctly by the GL." Rob (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) Is this really what the LDRAW spec is stating? Because that would be contrary to the OpenGL spec, in which the standard ordering of matrices is column-major. So if you have a row like a b c d e f g h That would be interpreted in OpenGL as a e (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Looking for 7819 as a .DAT file
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Hi, I found 7740, 7815 and 7820 on brickshelf but unfortunately no 7819, does anyone has it as a file maybe? Why do I am looking for that? I want to include a lego room in my website (www.adri.de) with my (and maybe your?) lego MOCS and sets and (...) (17 years ago, 21-Aug-07, to lugnet.cad.dat.models)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) After reading the text (Great work on part of the LSC), these are my comments. I think it would be helpful to mention the used matrix in line type 1 is row orientated (more clearly then 'standard matrix'). A paragraph about line type 1 (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) Keep in mind, the original LDraw tool treats concave quads as triangles, effectively ignoring the contained vertex. So, by the 0.27 "spec", concave quads are inappropriate. Which can be translated as they are disallowed, but the renderer copes (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(I'll comment on other items later, but want to get this out ASAP.) (...) This is a question for both Orion and the LDraw part library admins. If I write a program that splits all the concave quads in all existing official parts into two triangles, (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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| | Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
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(...) I'm not sure yet what we on the LSC will decide with respect to concave quads. It may be that we'll change that paragraph to a recommendation. I personally don't like them, but I can see Orion's point. I may write a utility program to (...) (17 years ago, 21-Aug-07, to lugnet.cad)
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