Rune S. Johansen <run### [at] get2netdk> wrote:
: Normally a matrix can transform
: an object so the point x can become
: P1, y can become P2, z can become
: P3 and the origin becomes P4.
: How can I do this thing backwards?

  I think that in this case you have to transform them with the inverse of
the matrix.
  Somebody can tell you how the inverse of a matrix is calculated.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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