Derek Holzer wrote: > Hi IOhannes, > > IOhannes m zmoelnig wrote: > >> the problem is, that some pix-sources (platform dependent!) supply the >> images with (0/0) in the upper-left corner, whereas others (0/0) is >> the lower-left corner (like openGL expects it). > > Would be good to know which platforms do it right, and which ones wrong.
it's not a matter of "right" and "wrong". mathematicians tend to put the origin in the lower-left corner (like a coordinate system) computer-graphics prefer the upper-left corner (back in the old days, the cursor would appear in the 1st line on the screen) openGL has been designed by mathematicians. tcl/tk comes from the computer geeks... btw, this fuzz is the reason why the tables in Pd are never oriented the right way... mgfa.dr IOhannes _______________________________________________ PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list