I think about resolving this counter intuitive problem by using values between 0 and 1 for all computings, and apply the pixels dimensions at the end
Patrice Colet - 06 32 66 03 57
----- "Mathieu Bouchard" matju@artengine.ca a écrit :
On Sun, 6 Jun 2010, patko wrote:
hello, why [pix_crop] y is offsetting from the lower left, when
[gemmouse] (or logic) is starting from the highest left?
For the same reason that GridFlow usually uses (y x) and sometimes (x y) : it's because of conflicting standards.
There's worse : if you've read books involving spherical coordinates,
you'll see that there are perhaps at least five different conventions in concurrent use... varying according to whether latitude is signed or unsigned ("colatitude") and the six possible orderings of three variables. It's crazy.
_ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard, Montréal, Québec. téléphone: +1.514.383.3801