gs:shear-tag

[newdep]

Hi Lutz,



what does gs:shear-tag actualy do?



Norman.

[Lutz]

shear is an affine transform which shifts all x and y coordinates of a shape by a certain factor shx and shy. This is the 2D transformation matrix:

Code Select Expand

[   1   shx ]
 [  shy   1  ]

Lines are kept streight and parallel by this transformation.



See also here: http://en.wikipedia.org/wiki/Affine_transformation">http://en.wikipedia.org/wiki/Affine_transformation



and here: http://en.wikipedia.org/wiki/Shear_%28mathematics%29">http://en.wikipedia.org/wiki/Shear_%28mathematics%29



Lutz

[newdep]

thanks ;-)