 | | Re: Tangent between two circles in 3D space?
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(...) Well, I'll start 8?) Step 6 - thats radius Step 7 - should be sin T = L / R ROSCO (22 years ago, 22-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) OK. Here's my rather convoluted analysis: 1. Find the plane of pulley A 2. Find the plane of pulley B 3. If they dont intersect, no tangent so stop here 4. Find the angle between them, call it T 5. Find the normal to plane A that passes (...) (22 years ago, 22-Jan-03, to lugnet.cad.dev)
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| | Re: Regarding LSYNTH
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LSYNTH's status window does not inform me that the file has been created successfully under Win98 SE. It does with W2K though. Perhaps you can fix this too? It only says: Welcome to LSynth, a bendable part synthesizer for LDraw files. The sentence (...) (22 years ago, 21-Jan-03, to lugnet.cad)
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| | Re: Tangent between two circles in 3D space?
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I have a child in fourth grade, and like many his age, he is a natural born lawyer looking for loopholes, so 'm well versed in the tactic because it is hard to resist.... If you notice my original post, I didn't even mention pulleys, I just asked (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Town Radio (Was: Minifig generator)
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First Shouldn't part 3962 Town Radio be renamed to Minifig Tool Radio? The version that is now in the libray displays wrong in MLCAD (and in all other programs for that matter). The handle is (still, again?) open. It has a gap! I can remember an old (...) (22 years ago, 21-Jan-03, to lugnet.cad.mlcad, lugnet.cad.dat.parts)
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| | Re: Help with MLCAD Spring Generator
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(...) Hi Marc - Thanks for the help! So, I did that... since my small diameter is 2 LDU, I subtracted the number of start revolutions I had times that value so H - 12, and it still came up 2 LDU short of the total height I wanted. This is odd. It's (...) (22 years ago, 21-Jan-03, to lugnet.cad)
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| | Re: Hair and Ice Planet visors?
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Here is a link to the visor on the tracker (...) (22 years ago, 21-Jan-03, to lugnet.cad.dat.parts)
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| | Re: Tangent between two circles in 3D space?
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(...) Ah Ha! Apparently there were TWO other pulleys you weren't telling us about. (URL) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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Agreed! -- Steven B. Combs, Publisher Bricks in my Pocket (BimP) (URL) Submission Information: (URL) member #414 "Kevin Clague" <kevin_clague@yahoo.com> wrote in message news:H92o80.D83@lugnet.com... (...) question! (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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Don, I'm assuming four pulleys in this case. Two are parallel to each other where the rubber band bends to be non-planar, and two others that pull the band around the two parallel pulleys. Kevin (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) Don, this is what I do for planar rubber bands and it works great if the two pulleys are in the same plane. But I can imagine a four pulley configuration where the first pulley is parallel to the YZ plane, the second pulley is parallel to the (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) It sounds like you want the intersection point of the 2nd circle with the plane of the first circle. I guess that should be exactly one point unless they're in the same plane. However, I don't see how the rubber band gets back to the first (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) I'm sure you're probably looking for a solution with x,y,z coords, but just in case, the 2D solution is on page 7 of Graphics Gems, and also here: (URL) think you should be able to transform your circles into the x,y plane with one center at (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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Steven, I debated with myself about adding L3PAO, because it certainly has had a positive effect for people who don't like command lines (and even for some of those that do). LPub has all the capabilities of L3PAO plus a *lot* more, so I felt like (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) With two circles in the same plane you can have four possible tangent lines. LSynthcp uses this to calculate straight line segments of rubber bands around pulleys. In 3D space you can have circles that are tangent along one line. Imagine a (...) (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) What have you tried so far? And which tangent? Think about it, there's an infinite number of solutions. Even on a plane there are multiple solutions. Recommendation: start with the book _Computational Geometry in C_ by Joseph O'Rourke. -Erik (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: Container Box
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Jaco, I have a picture of both boxes on my Comparison Pages: (URL) are many parts with a solid/hollow stud variant. To my knowledge the mold number on the part doesn't change with that variation. The solid stud versions are older, and the hollow (...) (22 years ago, 21-Jan-03, to lugnet.cad.dat.parts)
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| | Re: Why there is only L3P for dos?
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Also be sure to check out LPUB ((URL) B. Combs, Publisher Bricks in my Pocket (BimP) (URL) Submission Information: (URL) member #414 "Sproaticus" <jeremy@sproat.us> wrote in message news:H0zuCK.1sw@lugnet.com... (...) memory (...) (22 years ago, 21-Jan-03, to lugnet.cad)
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| | Re: Tangent between two circles in 3D space?
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(...) Wouldn't they have to be on the same plane in order to find the tangency? Or did you mean the tangency of two spheres? Steven (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) I just completed Chapter 9 of your book and I think I answered my own question! Steven (22 years ago, 21-Jan-03, to lugnet.cad.dev)
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