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Hi there, im first time writer, long time reader, Baz. I stayed quiet when Lego made the 'new' brown and grays. You all said what i was thinking. But. The other day I received a Lego part that was on Bricklink as Brown. Its reddish brown. So it (...) (19 years ago, 8-Apr-07, to lugnet.color)
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| | Re: Inverse matrix?
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The latest: (URL) (19 years ago, 8-Apr-07, to lugnet.cad.ray, lugnet.cad)
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| | The Bastion of Garda Tur
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Hey All, This was my main MOC for Brickfest. Gallery: (URL) you like it, comment and criticisms are always welcome. Josh (19 years ago, 8-Apr-07, to lugnet.castle, lugnet.announce.moc) !
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| | Re: NXT BrickSorter - Sorting bricks with a HiTechnic colour sensor.
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(...) Thx for the comments. The design as it stands right now would not allow the sorter unit to rotate all the way around - not a bad idea though. I wanted to challenge myself with the angle idea on the sorter itself (2 rows of cups). With larger (...) (19 years ago, 8-Apr-07, to lugnet.robotics.nxt, FTX)
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| | Re: Inverse matrix?
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(...) Well I'll be! That works too! Thanks you guys! James (19 years ago, 8-Apr-07, to lugnet.cad.ray, lugnet.cad)
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| | Re: Inverse matrix? [DAT]
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(...) Did you mean this: [ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ] [ 1 5 9 13 2 6 10 14 3 7 11 15 4 8 12 16 ] I have yet to try it. James (19 years ago, 8-Apr-07, to lugnet.cad.ray, lugnet.cad)
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| | Re: Inverse matrix?
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(...) I learned my matrix math from a 3d game programming book and I have no idea what the diagonals are... I was going to look it up but I got Travis' code to work! (URL) might still look it up as I may need to know about it) James (19 years ago, 7-Apr-07, to lugnet.cad.ray, lugnet.cad)
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| | Re: Inverse matrix?
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(...) I mean swap the OFF-diagonals, leave the diagonals as is. (...) (19 years ago, 7-Apr-07, to lugnet.cad.ray, lugnet.cad)
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| | Re: how does a line ends?
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(...) Interesting. I looked at the C runtime library sources that came with MSVC++ 6.0. The fgets() function there is definitely a little different than either yours or the one ROSCO linked. It does have a couple calls for thread safety, but (...) (19 years ago, 7-Apr-07, to lugnet.cad, FTX)
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| | Re: Inverse matrix?
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(...) Just take the transpose of the 3x3 world rotation matrix and it should work as the inverse. Transpose means swap diagonals M[1,2] <=> M[2,1] etc. If this doesn't work I've misunderstood you. Tim (19 years ago, 7-Apr-07, to lugnet.cad.ray, lugnet.cad)
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