On Wed, Jul 2, 2014 at 8:06 AM, Elise Huard
Hi, I've been trying to get a texture mapped onto a circle. I've pounded my head against this problem for a good while, been reading lots of posts about how to do it in C,
For folks who are experienced with low-level Haskell I actually recommend they use the OpenGLRaw library as it matches C examples more closely. Although, if you're a Haskell beginner that may just be an extra hassle.
reproduced those as much as possible, but the best I get is a fairly distorted texture (I'm working with a basic checkerboard as displayed in the Redbook4 examples of GLUT, just to make sure I've got it right before moving on to actual images). Code here: loading texture https://github.com/elisehuard/game-prototype/blob/master/src/Main.hs#L90 using the texture in a circle (mapping): https://github.com/elisehuard/game-prototype/blob/master/src/Main.hs#L130
It's hard to say what's going on with all those unsafeCoerce in there.
the result is here https://github.com/elisehuard/game-prototype/blob/master/images/texture.jpg
(as you can see, it is not a checkerboard) My aim is to make a 2D game to start with, so the perspective is orthogonal, I don't know if that helps.
Lots of things can be orthogonal, but I believe in this case that orthographic is the word you want :)