 | | Re: Need for rect primitive with two or one edge?
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(...) The Rectangle with 2 Parallel Edges (rect2p.dat) was already on the Parts Tracker. I've just added rect2a.dat (Rectangle with 2 Adjacent Edges) and rect1.dat (Rectangle with 1 Edge). I can't fix the zip file right now, but will try to get to (...) (22 years ago, 31-Jan-03, to lugnet.cad.dat.parts.primitives, lugnet.cad.dev)
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| | Re: LDRAW and Blender
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Hi Matthew, I've had Blender installed on my computer since Christmas but hadn't played with it much. After reading this, I've downloaded all the manuals and I am ready to go. This is the boost that I needed. Very promising - thanks a lot! (22 years ago, 30-Jan-03, to lugnet.cad.dev)
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| | Re: When (if) to use optional lines?
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(...) Hi Lance, I asked the same question last summer and since then have come to realize optional lines are useful. Here's the thread to my original question (and the many replies): (URL) a thread on how optional lines help smoothing algorithms: (...) (22 years ago, 30-Jan-03, to lugnet.cad.dev)
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| | When (if) to use optional lines?
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I am just about to finish development of a fairly complicated piece (24-tooth gear with 3 axlesholes), and in looking at previous posts and documentation I have seen some talk about optional lines. Currently I have not used them at all. What are the (...) (22 years ago, 30-Jan-03, to lugnet.cad.dev)
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| | Need for rect primitive with two or one edge?
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Assuming these don't already exist (I looked for rect2.dat on Parts Tracker, but could find nothing -- speaking of which, the "complete" unofficial parts zip seems to be out of date, since it is missing some stuff): Would it be reasonable to create (...) (22 years ago, 30-Jan-03, to lugnet.cad.dat.parts.primitives, lugnet.cad.dev)
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| | Re: LDRAW and Blender
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Matthew, I was wondering when someone would develop an import routine for Blender. I have used and known about Blender for some time. Over time, I would not be surprised to see the community embrace Blender as its favorite renderer even over POVRAY (...) (22 years ago, 30-Jan-03, to lugnet.cad.dev)
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| | LDRAW and Blender
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Hi all --- I am currently working on an LDRAW to Blender importer written in Python. For those of you who have never heard of Blender, it is a free, open source 3d modeler and renderer that includes a Python API (see it at www.blender.org). For (...) (22 years ago, 29-Jan-03, to lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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(...) Steven, I think it was a fair question, not a stupid one. Please *don't* shut up. Kevin (...) (22 years ago, 30-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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(...) Worked like a charm. Shoot...I should have thought of that. Boy do I feel stupid. Sorry about that! I'll shut up now. -- Steven (22 years ago, 30-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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Steven, In LPub Steps, Generate, uncheck Construction Images, then use Generate->Instruction Images menu item. Kevin (...) (22 years ago, 29-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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(...) OK...I'm new to editing .DAT files (although this is an area I would like to improve). That was just too cool. I used LDraw Design Pad, removed the lines under the wire stub area, previewed the image (using the LDView button) and the wire was (...) (22 years ago, 29-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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(...) Yep, we sure have! I'm finding it incredibly useful for my multiple projects right now. Thanks again, Kevin, for your hard work with this! (...) And we're all better for it that you are :-) -Tim (22 years ago, 29-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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(...) Thanks Steve! Tim Courtney and I have been putting LPub through its paces trying to get stuff ready for BricksWest. I finished up building instructions for a pneumatic adding machine, and Tim has got some of his own tricks up his sleeve. I (...) (22 years ago, 29-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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Steven, My bad. 880A.DAT is an LSynth part that I failed to add to the setup list. You can make one of your own by copying 880.DAT to 880A.DAT. Edit 880A.DAT and remove the electric cord stub. I'll add it tto the distribution. Thanks, Kevin (...) (22 years ago, 29-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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Kevin, Quick technical question. When I try to use the part 2982C02.DAT ~Electric Light Sensor (Complete Assembly Shortcut without wire) I receive a "File 880A.DAT not found! Continue loading?" error. When I respond yes, it loads the sensor but (...) (22 years ago, 28-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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Kevin, Boy, you continue to make a great program even better! Thanks for all of your time updating LPub. It has become my new best friend when documenting student instructions. I used it yesterday and save for a few little quirks, free software just (...) (22 years ago, 28-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | Re: LPub 2.1.0.6 Available
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As is often the case, I gave an incomplete URL. Try this: (...) (22 years ago, 28-Jan-03, to lugnet.cad, lugnet.inst, lugnet.cad.dev)
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| | New address
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To all, Due to some technical problems, my server has changed the address of my website to (URL) on the K'nex and Lincoln Logs parts libraries can be found at (URL) ArTron space story is here: (URL) am sorry for any problems the change might have (...) (22 years ago, 27-Jan-03, to lugnet.publish, lugnet.cad.dev)
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| | Method for splitting quads with not coplanar vertices? (Cross-post for /dat and /dev)
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hi folks, I had a little chat with carsten about the possibility to fix not coplanar vertices automatically in LDDP. we all know that running a line like this: 0 4 16 10 -1 10 10 0 -10 -10 0 -10 -10 0 10 through L3P with –dist 0.1 or –det 0.001 will (...) (22 years ago, 27-Jan-03, to lugnet.cad.dev, lugnet.cad.dat.parts)
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| | Re: Rect primitive with one edge missing?
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(...) Thanks to Mark Kennedy, you'll find this on the Parts Tracker at (URL) (22 years ago, 26-Jan-03, to lugnet.cad.dat.parts.primitives, lugnet.cad.dev)
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| | Rect primitive with one edge missing?
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Is there a primitive for a rectangle with one edge missing? I can't seem to find one, and I think it would be useful. It certainly would for a part that I am currently working on -- reducing three lines of code to one, 48 times. If there isn't one, (...) (22 years ago, 26-Jan-03, to lugnet.cad.dat.parts.primitives, lugnet.cad.dev)
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| | Re: Wierd shading in LDView
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(...) The 1-4con0 primitive should arguably have a different name, because it is a different shape than all the other cone primitives. Specifically, it comes to a point, while all the other cone primitives are missing the point (they're open at both (...) (22 years ago, 24-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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<snip> (...) Yes. lsynth only deals with 1 peice of stretched rubber band at a time, which is why I was keeping those other three pulleys a secret from Don. Kevin (...) (22 years ago, 24-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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"Kevin Clague" <kevin_clague@yahoo.com> skrev i meddelandet news:H94xC1.11z@lugnet.com... (...) calculate (...) If the condition above (Dist(...) etc.) holds, then it's just a matter of projecting the circle centers onto the line, ie. solve for a (...) (22 years ago, 23-Jan-03, to lugnet.cad.dev)
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| | Wierd shading in LDView
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I was updating part 3847 to use the 1-4con0 primitve and I notice some wierd shading at the tip. I then open the 1-4con0 primitive directly and there were no shading problems I could see. Download 3847 at the Parts Tracker to see what I mean. (URL) (...) (22 years ago, 24-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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(...) What you really need is to find a way to find just one side of the "rubber band". Say, pulley A to pulley B, "Side one". Then you could use the same function to determine pulley B to C, side one or two, and so on... Right? Paul (22 years ago, 24-Jan-03, to lugnet.cad.dev)
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| | Re: Tangent between two circles in 3D space?
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Kevin, I have been watching this thread with great interest and it is really fun to watch the community pitch in and assist you. Would you do me a favor. When you finally have the solution, could you summarize in a post? I plan on using this as a (...) (22 years ago, 23-Jan-03, to lugnet.cad.dev)
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| | Re: lsynthcp community development project setup on sourceforge
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(...) I couldn't find it anywhere in this thread, so the project page is here: (URL) on the Browse CVS link near the bottom to view the source code. The homepage is here: (URL) just to test things out a bit, I logged into the sourceforge compile (...) (22 years ago, 23-Jan-03, to lugnet.cad.dev, lugnet.cad.dev.mac)
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| | Re: Tangent between two circles in 3D space?
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(...) This looks great! This is what I was trying say the other day during my ah,hah! moment, but not so tersely. Now I just need to know how to calculate the intersection of the line and each circle and I'll be all set I think. I'll do some (...) (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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"Kevin Clague" <kevin_clague@yahoo.com> skrev i meddelandet news:H92o0p.CGB@lugnet.com... (...) a (...) Line = Intersect(C1.Plane, C2.Plane) if (Dist(C1.Center, Line) = C1.Radius) and (Dist(C2.Center, Line) = C2.Radius) ... (Or have I (...) (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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(...) More or less... there are 4 tangents to the 2 cylinders that happen to be on the circles. (...) Some thoughts that could perhaps (with [lots of] work) lead to an iterative solution: - Select one of the circles, then choose one radius of this (...) (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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(...) Yes. This *is* the ultimate (and probably universal) solution, although we probably need to be able to find one of four cylinders between any two circles in 3D space. You are thinking in terms of pulleys always on the outside of the band. With (...) (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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Hi Kevin, I think common tangent to circles is too restrictive, since rubber belts tolerate quite a lot of misalignment. ((URL) the problem should be reformulated as: Two circles in 3D space define two cylinders orthogonnally extruded from them. (...) (22 years ago, 22-Jan-03, to lugnet.cad.dev)
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| | Re: Seam width
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(...) Please see (URL) (22 years ago, 22-Jan-03, to lugnet.cad.dev)
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| | Re: Seam width
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(...) In LDView, I do a few things. First, I check to see if the file I just loaded is a part. In order to be a part, it has to satisfy two criteria. First, it can't be the child of a part. Second, it has to either be in the LDraw Parts directory, (...) (22 years ago, 22-Jan-03, to lugnet.cad.dev)
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| | Re: LDraw Infotip Shell Extension DLL
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(...) parts directories, researching parts stuff... :) (...) This version is very nice, just as it is. :) But if you were to figure out to make LDraw files display rendered images in Explorer's "thumbnail" view, that would be awesome... Steve (22 years ago, 22-Jan-03, to lugnet.cad, lugnet.cad.dev)
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| | 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: 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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