Posted by AlexRNL on Apr 12, 2011; 4:15pm
URL: https://forum.jogamp.org/Mapping-a-texture-tp2812032.html

Hi guys!

I have a problem with OpenGL (& JOGL) and I was hoping you could help me :)

So the idea is that I build an image with coordinates which I receive in the polar system. To avoid computation (this image receives a LOT of data) I'm storing them directly into a BufferedImage (r -> x & θ -> y). Basically, I end up with an distorted image.

Then I transform this image into an OpenGL texture and I was wondering if it was possible that OpenGL mapped that texture into polar coordinates system. Or maybe to map it onto a gluDisk quadric (so it has the right shape).

In case that is not possible, I was thinking of drawing a circle with many triangles (so it would look like an almost perfect circle) and apply the texture on each vertices of those triangles.

With this post I am joining a image which expose more clearly (i hope so...) my problem.

Please do not hesitate to ask for more details if it is explained badly (English is not my primary language ^^).

Thanks,
Alex.