On Mar 9, 2008, at 10:58 AM, Richard Goedeken wrote:
Brian Fisher wrote:If were going to have something like that (a warping function) in PyGame, I would definitely want it to use anti-grain-geometry(http://antigrain.com ) rather than use a newly coded up function. AGGhas been around for a very long time, is highly tested, and once you code up the basic integration issues a huge world of completely awesome 2d software rendering falls out fairly easily (gaussian blur, vector shape rendering, textured lines, etc. etc.)I was previously unaware of this project; thanks for the link. It looks quite impressive. It appears that AGG does not have a function to do what Ian was asking for though - transforming a rectangle to an arbitrary quadrilateral. What it can do, though, is transform a rectange to an arbitrary parallelogram.
If I understand this screenshot correctly, I think it does do that: http://antigrain.com/screenshots/perspective1.gif (Labelled: 2D Bilinear transformations in a quadrangle) It also seems to be able to do some non-linear distorts: http://antigrain.com/screenshots/perspective5.jpg http://antigrain.com/screenshots/distortions.jpg very cool. -Casey