 | | Re: bend thingie creator.
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(...) Let me check my archive of LDraw related programs and if I have it I'll email it to you. -Orion (18 years ago, 24-Nov-06, to lugnet.cad.dev)
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| | LSynth electric cable cross section oriention problem
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Hi, I've got a reworked version of LSynth with a major problem... I cannot figure out how to control the twist of the cross section. I use bezier curve to created the nicely curved set of points, and compress it by tossing out points until the angle (...) (18 years ago, 24-Nov-06, to lugnet.cad.dev)
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| | Re: bend thingie creator.
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(...) Koen, I tried to email you using your address, and I tried to download your bendie thingy creator. It is gone. Does anyone have a copy of this so I can play with it? Kevin (18 years ago, 24-Nov-06, to lugnet.cad.dev)
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| | Re: *** Correction: LDView Version 3.1 Released ***
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(FUT lugnet.cad.dev) (...) Actually, all the string handling code for the path stuff is fine (and cross-platform to work in both Windows and *nix). After doing some investigation, I discovered that the problem is that when we do a stat on the (...) (18 years ago, 22-Nov-06, to lugnet.cad, lugnet.cad.dev)
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| | Re: LDraw coordinate system driving me crazy
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A sincere thanks to all of you. Your comments made me go back over (again) my export code, and I found an error. Now it works as expected. I was getting funny rotations because I mis-ordered the elements of the transformation matrix, duh. Seems (...) (18 years ago, 20-Nov-06, to lugnet.cad.dev, FTX)
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| | Re: LDraw coordinate system driving me crazy
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(...) I agree with Tim. It looks fine to me. If there were any mirroring going on, then either the orange and red would be swapped on the unwrapped box, or the green and grey would be swapped. The picture in LDView has a rotated camera angle (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev, FTX)
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| | Re: LDraw coordinate system driving me crazy
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(...) Google uses the right handed system but indeed rotated by 90 degrees, LDraw also uses the right handed system but 180 degrees rotated. It should not matter how you show the model, the coordinates are interchangeable, but if you want to use (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev)
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| | Re: LDraw coordinate system driving me crazy
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Tim Gould wrote: > It is still a right-handed system. The handedness is unchanged by rotation (in (...) So the original designer of the LDraw program just decided to use this orientation of the right handed system. if so then it starts making more (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev)
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| | Re: LDraw coordinate system driving me crazy
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(...) That looks like a correct mapping to me. Unless I'm mistaken the red and orange are on the same sides in both pictures. The unwrapped boxes are definitely identical and unless you've moved them in one or the other the whole thing is right. Tim (18 years ago, 19-Nov-06, to lugnet.cad.dev, FTX)
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| | Re: LDraw coordinate system driving me crazy
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Hi, Here's my box test model in SketchUp. (The above model is the same model unfolded.) (URL) When I export this model to a .dat and open it in LDView, the green side is the top-view, blue is the front view (as expected), and I would expect the (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev, FTX)
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| | Re: LDraw coordinate system driving me crazy
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(...) In LDraw +z is backwards, not forwards or more strictly +Z points away from the camera when X is right and -Y is up. Tim (18 years ago, 19-Nov-06, to lugnet.cad.dev, FTX)
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| | Re: LDraw coordinate system driving me crazy
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(...) I've been having difficulty with importing/exporting .dat files from SketchUp. In SketchUp, if you stand at the Origin; X is right, Y is forward, and Z is up. The LDraw Primitives Reference ((URL)) says the LDraw axes are: X is right, Y is (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev, FTX)
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| | Re: LDraw coordinate system driving me crazy
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(...) It is still a right-handed system. The handedness is unchanged by rotation (in ldraws case 180*x from standard). Tim (18 years ago, 19-Nov-06, to lugnet.cad.dev)
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| | Re: LDraw coordinate system driving me crazy
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As I understand it, LDraw has negative y in the up direction, which is neither right nor left handed, but something else entirely. I don't know that it has a name. James (18 years ago, 19-Nov-06, to lugnet.cad.dev)
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| | Re: LDraw coordinate system driving me crazy
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(...) I've always understood it is: X positive is right X negative is left Y Positive is bottom Y Negative is top z Positive is back z negative is front In fact you can show this by adding a brick in MLCad and moving it around, watching how the X, Y (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev)
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| | LDraw coordinate system driving me crazy
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Hello all, I'm having difficulties with the ldraw coordinate system. As fas I understood it it's Right handed, just like OpenGL. So X positive is right X negative is left Y Positive is top Y Negative is bottom z Positive is front z negative is back (...) (18 years ago, 19-Nov-06, to lugnet.cad.dev)
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| | BFC extension ratified by the LSC
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The LDraw Standards Committee (LSC) has ratified the Back Face Culling (BFC) language extension. The de-facto BFC standard was adopted by the LSC as their working draft (see (URL) and we have since been working to clarify and/or remove any (...) (18 years ago, 9-Nov-06, to lugnet.announce, lugnet.cad.dat.parts, lugnet.cad.dev.org.ldraw)
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| | Contributor Agreement License details
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Hi all, Well it's been a long time coming but we now have a version of the Contributor Agreement (CA) license and readme to be distributed alongside new versions of the parts library. I'd like to take this opportunity to thank all those who have (...) (18 years ago, 4-Nov-06, to lugnet.cad.dev.org.ldraw, lugnet.announce) !!
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| | MOTM / SOTM Voting For November Is Now Open
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We're pleased to announce that voting for the November 2006 Model of the Month and Scene of the Month Contests is now open. Visit the voting page to cast your vote: (URL) inform me of any errors you may encounter. Note: If you get a error page, try (...) (18 years ago, 4-Nov-06, to lugnet.cad, lugnet.cad.dev.org.ldraw, lugnet.announce)
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| | Re: Non-CA parts rewrite
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(...) We just got an affirmation from Bernd Munding, author of 3839a.dat - Plate 1 x 2 with Handles Type 1. Like John Jensen's Technic Bucket 10 x 8 also this part has been rewritten (URL) for the record: if you wanna contact Bernd please use his (...) (18 years ago, 1-Nov-06, to lugnet.cad.dev.org.ldraw)
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