 | | Re: Unusual View matrices in LDRAW.INI
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(...) LDAO writes those entries to ldraw.ini. I'm not sure if any other programs update that section or not. The "Oblique" view is the default view for LDraw, and was also used for LDLite (I think) and L3Lab. "UpsideDown" is derived from "Oblique". (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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| | Re: Unusual View matrices in LDRAW.INI
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OK now we're getting somewhere. Thanks for providing the exact mathematical representations of those numbers. Now I'm gonna have to figure out how you calculated them. :-) (I just had the computer do the work and print out the decimal (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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| | Re: 1-8sphe.dat tesselations compaire image
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(...) You're right, I haven't thought of that. Well, you get the general idea. It would be 3 parallel bands of quads along the perimeter, and the rest diveded proportionaly. Generating this is fairly easy in my cad program, and I can use the (...) (24 years ago, 4-Oct-00, to lugnet.cad)
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| | Re: Unusual View matrices in LDRAW.INI
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I believe the matrix happens to produce a standard isometric view, but doesn't do so in the traditional 3D graphics way of rotation. This means that in addition to not looking right after rotation, it also doens't produce correct results when you (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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| | Re: 1-8sphe.dat tesselations compaire image
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"Manfred Moolhuysen" <moom@nospamchello.nl> wrote in message news:G1wK2M.6ry@lugnet.com... (...) closely, (...) primitive. (...) It does look good, but it is actually a 32 tesselation, not a 48 (32 segments around the equator of an entire sphere). (...) (24 years ago, 4-Oct-00, to lugnet.cad)
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| | Re: part skins (was Re: some thoughts on ldraw parts)
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(...) It's not always this easy. Some parts just cannot be constructed out of the primitives - or the scaling/transformation is just too difficult to figure out. Examples are those with complex curves (like the wizard's hat), or complex (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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| | Re: 1-8sphe.dat tesselations compaire image
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"Manfred Moolhuysen" <moom@nospamchello.nl> wrote in message news:G1w9FL.Csy@lugnet.com... (...) made (...) should do (...) No: they never reached the point of actually generating a sphere for anything past the standard tesselation. All the higher (...) (24 years ago, 4-Oct-00, to lugnet.cad)
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| | Re: Once again I dit it! :)
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(...) (24 years ago, 4-Oct-00, to lugnet.cad)
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| | Re: Unusual View matrices in LDRAW.INI
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(...) I don't know their origin, but you're right, there's a shear component in them. Here's what a matrix decomposition shows: (...) Scale : (1.5, 0.942809, 1.41421, 0) Rotate : (0.321751, 0.729728, 0.463648, 0) Translate : (0, 0, 0, 0) Shear : (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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| | Re: part skins (was Re: some thoughts on ldraw parts)
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(...) You are correct on both points. The primary value of the tool at this point is that it removes the tedium of defining polygons to connect vertices. It's a start! (...) Your edge-detection suggestion is certainly the ideal, but would get a bit (...) (24 years ago, 4-Oct-00, to lugnet.cad.dev)
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