 | | 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: 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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| | Tangent between two circles in 3D space?
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Anyone know how to find out the tangent between two cicles in 3D space? Kevin (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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(...) ;^) Relax, we are talking about both on the command line that starts the program, as well as on the LDraw meta-commands that start synthesis of a specific part. Notice he said getopt() style parameters, not getopt() to get the parameters. (...) (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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(...) Whoah, wait a minute! I like getopt() as much as anyone, but I thought we were talking about something to go *inside* the file on the SYNTH BEGIN line(s), not necessarily on the command line. Units may be universal for all synthesized parts in (...) (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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(...) Much better! I've been programming on Windows too much lately (isn't any amount too much? ;^) Kevin (...) (22 years ago, 20-Jan-03, to lugnet.cad.dev)
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| | Seam width
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Hi. Just wondering: How do you calculate the seam width in programs like L3P and LDView? Do you just scale the part by x% ? Or ? Trond Hasse Lie Norway (o\_/o) (22 years ago, 20-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) What about getopt() style parameters, eg: -f foo.dat -l 20 -u cm --filename foo.dat --length 20 --units cm ROSCO (22 years ago, 20-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) Yeah, I thought so. Other options are copying the line before the strupper(), or using strnicmp() or strncasecmp() for the keyword test. The copy method is easier to do in a portable way. (...) I like the named parameters. That makes it easy (...) (22 years ago, 20-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) I'd like to discuss changes before they are made, so I can keep track of new capabilities of the program. (...) Yes. I was trying to make lsynth not case sensitive when it came to recognizing keywords, but I don't like the fact that it changes (...) (22 years ago, 20-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) I don't know about the math, but I do have a few thoughts after a quick peek at the sources. So how should we go about making changes? Discuss them here first, or just put them in CVS with an appropriate comment if we think they won't break (...) (22 years ago, 20-Jan-03, to lugnet.cad.dev)
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| | Re: LDraw Infotip Shell Extension DLL
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Hi ok.. i changed the two mentioned points and uploaded v1.01. Play well Carsten "Jaco van der Molen" <jmolen@globalxs.nl> schrieb im Newsbeitrag news:H90I85.9wE@lugnet.com... (...) in (...) your (...) information (...) un-install. (...) (22 years ago, 20-Jan-03, to lugnet.cad, lugnet.cad.dev)
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| | Re: LDraw Infotip Shell Extension DLL
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OK, this works! It does show up with DAT and LDR extension but... ...could it also be associated with MPD? Furthermore I suggest to explicitely display lines that have useful info in them, for now it displays lines like ROTATION CENTER and ROTATION (...) (22 years ago, 20-Jan-03, to lugnet.cad, lugnet.cad.dev)
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| | Re: LSynth 2.0 Available
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(...) I like the fact the it doesn't use the registry. This mean I can move the LDRAW directory around at will and have to worry about flargging Windows not being able to update itself. You would think something as basic as update all the registry (...) (22 years ago, 20-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | Re: LSynth 2.0 Available
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I agree that it should ask. For example I keep my LDraw files in C:\Program Files\LDraw and MLCAD in C:\Program Files\MLCAD. It was a little awkward to set up, but it works great. If LDraw used a proper Windows installer then this wouldn't be an (...) (22 years ago, 19-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | Re: LSynth 2.0 Available
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(...) Another issue is the ownership of the changes. Do you wish to require authors who contribute changes to assign ownership of the changes to you? If you do not, then the program becomes partly owned by you and all whose code you have accepted (...) (22 years ago, 19-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | LDraw Infotip Shell Extension DLL
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Hello! I was sick and bored and Leonardo did not have the time so i just wrote it. Its the same little expansion to the explorer shell so when you hover your mouse over a LDR or DAT file it will give you the basic header information in a tooltip. It (...) (22 years ago, 19-Jan-03, to lugnet.cad, lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) One last question; I am curious as to why you didn't include LP3AO as a "Power Tool?" This is another one of those no-brainers (creating a GUI for a command line program). Was it due to the timeline of your text? Steven (22 years ago, 18-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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<snip> (...) Thanks Steven. Comments like this are highly motivating. When I started writing LPub, I'd only just heard of L3P, although I new of POV-Ray from way back. It has been quite a learning experience. (...) I learned a lot about L3P writing (...) (22 years ago, 18-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) Maybe we can look forward to it in the next version. (...) LPub is just an amazing tool. I was not a fan of POV-Ray and the LP3 conversion tool to create documents. However, using LPub has encouraged me to begin creating many more (...) (22 years ago, 18-Jan-03, to lugnet.cad.dev)
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| | Re: LSynth 2.0 Available
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(...) OK the installer is slightly less sucky, because now it puts the parts in the LDRAW\Parts directory. Kevin (22 years ago, 18-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | Re: Seeking input on reused user parts in building instructions
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I totally agree with all these comments. This especially rears it's head when doing passenger coaches where I've use the same sub model 36 times in s set of 4 coaches! Which brings up an interesting philosophical question about instruction (...) (22 years ago, 17-Jan-03, to lugnet.cad.dev, lugnet.inst)
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| | Re: lsynthcp community development project setup on sourceforge
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Steven, Hopefully the sourceforge effort will also get some folks that can help me with the mathematical ins and outs of the effort. I contacted Michael about lsynthcp support in MLCAD, but he was already wrapping up the 3.0 release. I'm hoping that (...) (22 years ago, 17-Jan-03, to lugnet.cad.dev)
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| | RE: lsynthcp community development project setup on sourceforge
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Kevin, Excellent idea. Using SourceForge will hopefully garner you some additional support and programming resources to allow you to further LSynth's development. When will LPub be moving to SourceForge? As an aside, I have been reviewing your new (...) (22 years ago, 17-Jan-03, to lugnet.cad.dev)
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| | Re: Seeking input on reused user parts in building instructions
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"Kevin Clague" <kevin_clague@yahoo.com> wrote in message news:H8vFL3.9Js@lugnet.com... (...) [ ... snipped ... ] (...) it to (...) I don't see any down side to doing that. Mike -- Mike Walsh - mike_walsh at mindspring.com (URL) - North Carolina (...) (22 years ago, 17-Jan-03, to lugnet.cad.dev, lugnet.inst)
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| | Re: Seeking input on reused user parts in building instructions
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(...) I remembered this issue the other day and was surprised no one had asked about it. (...) I like the idea of creating the seperate picture, but would prefer to add it to the screen web pages also. (...) Thanks Mike, Kevin (22 years ago, 17-Jan-03, to lugnet.cad.dev, lugnet.inst)
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| | Re: LSynth 2.0 Available
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(...) Installers are highly uninspiring, but I will fix this for the next release (which will happen as soon as I fix and test the installer.) Kevin (22 years ago, 17-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | Re: LSynth 2.0 Available
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I really like your tool, it will save me a lot of time and struggling and allow mw to add to my models I do, hower have a a comment on the installer you use, it sucks.. instead of placing the parts in the correct parts directories it placed them in (...) (22 years ago, 17-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | Re: Seeking input on reused user parts in building instructions
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"Kevin Clague" <kevin_clague@yahoo.com> wrote in message news:H8t9F9.BAt@lugnet.com... (...) parts (...) in (...) was (...) Yeah! I have seen this with many of the train models I have created. In one case I used a sub-model 8 times and LPub (...) (22 years ago, 17-Jan-03, to lugnet.cad.dev, lugnet.inst)
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| | Re: LSynth 2.0 Available
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Hi Ahui, If you are still having problems, just email an example that does not work, or post it here. I will figure it out and get back to you. Kevin (...) (22 years ago, 17-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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| | Re: LSynth 2.0 Available
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Hi Dave, Right now the installer is too simple. It needs to know where the LDraw directory is, so it can add some parts to your parts directory. It does a simple search for this: LDRAW\MKLIST.EXE on your hard disks. It cannot find it. I'd guess one (...) (22 years ago, 17-Jan-03, to lugnet.cad, lugnet.cad.dev, lugnet.inst)
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