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Why are transforms 4 x 4? [message #37396] Sun, 14 December 2003 17:10
profxtjb is currently offline  profxtjb
Messages: 22
Registered: October 2003
Junior Member
My geometry knowledge is limited, so I am unsure why IDL uses 4 x 4
transform matrices to rotate, translate and otherwise mess with
three-dimensional vectors. Can someone please render an explanation?
There must be a reason. Is it just that they like to be able to
handle four-vectors and the ever-popular Lorentz xfm? :)

-Thomas

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