Teem: bin: ilk: Arbitrary transformations


teem	/	bin	ilk: Arbitrary transformations

You can give ilk an arbitrary 2x3 homogenous coordinate transform with "-t a,b,c,d,tx,ty", where the matrix is arranged:

 [ a  c  tx ]  [ x ]
 [ b  d  ty ]  [ y ]
 [ 0  0  1  ]  [ 1 ]

The coefficients are linearly ordered in exactly the same way as they are for PostScript's representation of 2D transformations.

ilk -i init.ppm -t 1.1,-0.2,0.5,1.3,150,-90 -b wrap | tojpg > arb.jpg