 | | Re: Inverse matrix?
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(...) There really is no easy way to do it. Feel free to look at TCVector::invertMatrix in the LDView code if you want to see code that does it on a 4x4 matrix. To convert a 3x3 matrix into a 4x4 matrix, put the 3x3 in the top left, put a 1 in the (...) (18 years ago, 7-Apr-07, to lugnet.cad.ray, lugnet.cad)
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| | NEW VERSION! Re: Conversion file for ldraw to ldd
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(...) Mike Gallagher has very kindly uploaded his improved version of ldraw.xml to (URL) I recommend using it. Tim (18 years ago, 7-Apr-07, to lugnet.cad.ldd)
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| | Re: Conversion file for ldraw to ldd
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(...) I will do that. Thanks for all the help and the ldraw.xml file. I loaded mine as it is today. I have a bunch more I need to do and I should have those done by Tuesday or so. I made this version 1.01a for starters and will keep most up to date (...) (18 years ago, 7-Apr-07, to lugnet.cad.ldd)
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| | Re: how does a line ends?
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(...) That was quick! Thanks for taking the time to indulge me... (...) It is interesting that it was that much time difference. Are these the total load times, or just profiling of the time spent inside the fgets() routines? I see one or two things (...) (18 years ago, 7-Apr-07, to lugnet.cad, FTX)
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| | Re: Conversion file for ldraw to ldd
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--snip-- (...) Hi Mike, It's my understanding [1] that we're allowed to post our own Ldraw.xml files so perhaps you could upload yours to Brickshelf. That way people can be sure that they've got the fixes right and the XML file can grow with fixes (...) (18 years ago, 7-Apr-07, to lugnet.cad.ldd)
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| | Re: Conversion file for ldraw to ldd
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(...) I also fixed these. First 2 I just had to fix placement, 3rd one I created a “transformation” and “brick ldraw” lines, the 4th I only had to add the “transformation” line, you all ready had the “brick ldraw” line. But 3069b and 3068b I could (...) (18 years ago, 7-Apr-07, to lugnet.cad.ldd)
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| | Re: how does a line ends?
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(...) Yes, sorry that my post sounded overly defensive. I have something of a chip on my shoulder from years of working alongside programmers who want to take shortcuts at the expense of their users. Very few seem to appreciate that it is worth a (...) (18 years ago, 7-Apr-07, to lugnet.cad, FTX)
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| | Re: Conversion file for ldraw to ldd
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(...) Me too to some degree. (...) I believe the system may be (incorrectly) case sensitive when reading LDraw files. Perhaps add b and B options. It's also possible this particular aspect is not yet programmed completely. Furthermore when (...) (18 years ago, 7-Apr-07, to lugnet.cad.ldd)
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| | Re: Conversion file for ldraw to ldd
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(...) I have been trying to correct some of the errors when exporting from LDD > LDR, and not being a programmer I have come to a dead end. I have been able to correct some of the parts that would show up but not in the correct location or rotation. (...) (18 years ago, 7-Apr-07, to lugnet.cad.ldd)
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| | Re: Inverse matrix?
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(...) The inverse of <1,0,0,0,1,0,0,0,1,0,0,0> is itself. To compute the inverse of a general 3x3 matrix (essentially what you need to do) is rather complicated. You could do it in a macro using Gaussian elimination [1]. Tim [1] (URL) (18 years ago, 7-Apr-07, to lugnet.cad.ray, lugnet.cad)
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