 | | LDDP Coplaner Checks
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Now that the coplaner quad is defined in the LDraw spec by planer normals, the dist and det checks used by LDDP (and L3P) are now outdated. I think these checks should be removed, are there any users out there that would like to see them stay? (...) (15 years ago, 16-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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(...) --snip-- (...) You are right here. In 3D it gets a bit more complicated and, as far as I know, a mirror and rotation corresponds to a mirroring on a plane and a rotation within that plane. I'm sure there is a way to unravel it all but it's (...) (15 years ago, 16-Jun-09, to lugnet.cad)
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| | LD4DStudio 1.1 Beta 1 Available
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I finally completed LD4DStudio 1.1 Beta 1, You will find it on (URL) version introduces a whole boatload of changes and additions, see the release notes section for a complete overview. (URL) also updated the manual and added some technical (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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Hi Kevin, Here's the problem. A mirror plus a rotation can look just like a mirror across another axis. Ugly 2D ASCII art example: .|b --- .|. Mirror the b to the left. d|. --- .|. Rotate 180 degrees. .|. --- .|p That looks just like you mirrored (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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(...) Hi Tim, Thanks. Math is not my specialty, so all help is appreciated. If the user has rotated the mirrored submodel, doesn't the vector normal then also get rotated? The hope was there was a way to separate the mirrored aspect of the rotation (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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(...) You can also use SR 3D Builder to build your mirrored/symmetric models. You build a side and the program will build the other, mirrored one. It automatically substitute and rotate non symmetric parts and is compatible with lDraw/MLCad file (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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(...) Not sure if this helps but... If you solve (M11+1) x + M12 y = - M13 M21 x + (M22+1) y = - M23 and then normalise the vector (x,y,1) the result will be a vector normal to the mirroring plane. To test that you indeed have a rotation/mirror you (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) Way back in olden times we created some programs to automate the mirroring process. (URL) anyone feel like testing the programs out to see how well they hold up with all the new parts available today? Don (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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(This should probably have been in lugnet.cad.dev, and I almost put it there, but decided that it wouldn't make much difference.) I don't know the answer to this question. I'm responding any, just to let you know that I did read the question, since (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Re: Mirror matrix question
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(...) I don't think so. (...) What if you mirror it again to get back to an unmirrored state, then run the code in mirwiz to create a submodel that only looks mirrored (but actually just flips pieces to look mirrored and substitutes opposite wedges, (...) (15 years ago, 15-Jun-09, to lugnet.cad)
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| | Mirror matrix question
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Hi gang, If I have an LDraw Type 1 line that adds a submodel, and the rotation matrix of the line is a mirrored matrix about one and only one axis, can one calculate which axis the model is mirrored about? Can one do so if the user mirrored *and* (...) (15 years ago, 14-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) Well, scratch that analysis. wing2.ldr and wing1.ldr are exactly the same model. When you added wing2.ldr you *did* use mirror matrix. LPub 4.0.0.2 notices that you used a mirrored matrix, and rendered the wing with the mirror matrix rotation. (...) (15 years ago, 14-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) Hi Jaco, The right wing is being rendered weirdly because LPub thinks that the right wing is being added using a mirror matrix. You have wing1.ldr and wing2.ldr in your model. In theory you could get by with just wing.ldr, because wing2.ldr (...) (15 years ago, 14-Jun-09, to lugnet.cad)
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| | Re: DATHeader version 2.0.5 (The Reviewer Tool)
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Hello Michael Heidemann DatHeader 2.0.5 does not add CR/LF to the end of a file. This happen when you allow to program format comments (to '0 //' form ). I reference to File Format Restrictions for Official Parts (URL) El'dar Ismagilov (15 years ago, 14-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) I've solved the problem installing the Visual Studio 2008 Runtime. LPub now runs fine. Thanks Travis! Jetro (15 years ago, 13-Jun-09, to lugnet.cad, FTX)
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| | Re: LPub Bad results with LDView
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(...) <snip> 15. Allow PLI and callouts placed to the left of the CSI to share the column width in step-groups and callouts. For example: (URL) (15 years ago, 13-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) <snip> (...) 14. In classic buffer exchange store, add parts, step, buffer exchange load, you no longer need to GHOST the parts added between the store and step. LPub applies buffer exchanges to the LDraw files before being handed to the (...) (15 years ago, 13-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) Oh, LPub also figures out the bounding box for things placed relative to step-groups and centers them. I also fixed problems with PLIs for step groups that do not have PLI per step. Kevin (15 years ago, 13-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) One of the new features is affecting your swan. When you place callouts, PLIs, etc, relative to the CSI, LPub figures out the bounding box of the collection, and then automatically centers the bounding box on the page. You did this manually, (...) (15 years ago, 13-Jun-09, to lugnet.cad)
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| | Re: LPub Bad results with LDView
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(...) Kevin, Thanks for sharing this anyway :-) I like the new features you added (add pages, cover, images). Do you have a list of new features or changes? FYI: I've noticed there are some differences in rendering. See: (2 URLs) (15 years ago, 12-Jun-09, to lugnet.cad)
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