![](https://secure.gravatar.com/avatar/c454c7402b3c58eaddc7622147742a81.jpg?s=120&d=mm&r=g)
30 May
2012
30 May
'12
6:56 p.m.
Well then in case anyone needs such a transformation, I've constructed the (non-unique) transformation T
t:=angle(f,e); q:=e++f; p:=(c*f-d*e)/q; s:=(c*e+d*f)/(q**2); transform T; T:=identity rotated t xscaled p yscaled q slanted s shifted (a,b);
This yields T=(a,b,c,d,e,f). Troy