Subject:
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Re: Can someone explain the method to the madness...
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Newsgroups:
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lugnet.cad
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Date:
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Mon, 8 Mar 2004 21:58:35 GMT
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Viewed:
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578 times
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Mike Thorn wrote:
> I'm cracking my keyboard over my head trying to replace a |matrix|
> with a translate
The first 'matrix' specifies the *size* of the brick (depending on the Seam
Width setting).
The second one defines the rotation and translation of the brick. The first
nine numbers are the rotation matrix, and the last three are the
translation.
So,
object {
_3003_dot_dat
matrix <1-SW/40,0,0,0,1-SW/28,0,0,0,1-SW/40,0,SW/2.8,0>
matrix <1,0,0,0,1,0,0,0,1,20,-24,0>
#if (version >= 3.1) material #else texture #end { Color15 }
}
looks the same as
object {
_3003_dot_dat
matrix <1-SW/40,0,0,0,1-SW/28,0,0,0,1-SW/40,0,SW/2.8,0>
rotate y*0
translate <20,-24,0>
#if (version >= 3.1) material #else texture #end { Color15 }
}
And with a rotation <> 0:
matrix <0,0,1,0,1,0,-1,0,0,20,-24,-20>
means:
rotate y*90
translate <20,-24,-20>
Hope this helps
--
Anders Isaksson, Sweden
BlockCAD: http://w1.161.telia.com/~u16122508/proglego.htm
Gallery: http://w1.161.telia.com/~u16122508/gallery/index.htm
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Message has 1 Reply:
 | | Re: Can someone explain the method to the madness...
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| The first matrix scales the part for a seam width. The second orients the part to your cad file. The last three numbers in the scond matrix are the location. povray rotates around world 0,0,0. so take your lines from this: object { _3003_dot_dat (...) (21 years ago, 9-Mar-04, to lugnet.cad)
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Message is in Reply To:
| | Can someone explain the method to the madness...
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| Well, I don't know if it's madness or not, but it's driving me mad, at any rate. Can some kind soul explain either or both of the following: 1) What is the conversion system for MLCAD units to POV units, when not using LGEO? 2) Why does L3P create (...) (21 years ago, 8-Mar-04, to lugnet.cad, FTX)
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