 | | Re: Unmatrix
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(...) My Lani project has a rotation matrix that takes the parameters x, y, z. The first thing it does is determine what rotation parameters are 0. There are 7 cases: x only y only z only x and y x and z y and z x, y, and z This is for speed. It (...) (23 years ago, 9-Apr-02, to lugnet.cad)
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| | Re: Parts as volumes (instead of surfaces)
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(...) I like the idea of CSG. Unfortunately I can not invest time in Rayshade and alternate ray-tracers. I know they can have attractive features but I am more a POV user. I must impose some limit to my (already too high) diversification. Of course, (...) (23 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: Parts as volumes (instead of surfaces)
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(...) Stud4 primitive could be convex-decomposed just as Ring4 primitive is today. More generally, just as any LDraw surface is convex-decomposed with just triangles and quads (3,4 points respectively), I guess any LDraw volume can be (...) (23 years ago, 9-Apr-02, to lugnet.cad.dev.org.ldraw)
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| | Re: panel with round windows (for 10020) updated
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(...) The rings aren't actually for POV- they're for LDraw. They are simply sections of 16-sided "curves" (and yes- they are in the "p" directory). The rotation/scaling matrix turns them and scales them up to fit onto the panel's surface. You can do (...) (23 years ago, 9-Apr-02, to lugnet.cad.dat.parts)
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| | Re: Unmatrix
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(...) I think we covered this a while ago in the thread about the ldraw oblique matrix. This one has a link to some Graphics Gems source code. (URL) seems to me though that you can't really produce 3 definitive X, Y, and Z axis rotations. There (...) (23 years ago, 9-Apr-02, to lugnet.cad)
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