 | | String Segment [DAT]
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This is what I am using to model string. It's essentially a twisted 4 sided shape. I probably should have done it using 6 sides instead. I put two of these back to back with the grey pattern matching up, then replicated to get the length needed. LMK (...) (23 years ago, 10-Apr-02, to lugnet.cad.dat.parts)
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| | Re: Modeling String
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(...) Well I just slapped together a primitive to simulate twisted string bits but am not all that pleased with it. The string I have in mind to model will be so tight that a straight line will be fine, no need for catenary curves (although it sure (...) (23 years ago, 10-Apr-02, to lugnet.cad)
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| | Re: Modeling String
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I'm working on a program that simlulates strings as braided coils and lots of splines in POV-RAY. I'm tyring to get the catenary curves right so it looks like it's tension is supporting it's weight.... Hopefully, I'll get some time to finish it next (...) (23 years ago, 10-Apr-02, to lugnet.cad)
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| | matching pattern numbers???
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For patterned parts that occur together in a set -- say, for example, the various patterned parts from a Han Solo minifig (from the Star Wars theme) -- that have been or are being encoded as LCAD data files, shouldn't we be co-ordinating these (...) (23 years ago, 10-Apr-02, to lugnet.cad.dev)
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| | Modeling String
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I would like to model some LEGO string. Has this been done before? Do people have suggestions on how to do it? The string doesn't have to be too high fidelity, just a thin (but non zero thickness) straight black line, as it will be taut between two (...) (23 years ago, 10-Apr-02, to lugnet.cad)
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| | 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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