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  drawing images and rotating with JOGL  (Read 1408 times)
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Offline 8ballj

Senior Newbie





« Posted 2009-12-02 18:10:30 »

All my images are PNG format.  I've gotten to the point where I can draw these images using gl.glDrawPixels().  I generate all the byte[] buffers upon load of the game, however this itself isn't adequate if I want images rotated during the game.  What is the best way to implement this?

1) Use Java2D to apply AffineTransform rotation to image and then produce byte[] for each frame.  Seems like this add a lot of overhead, especially with 60+ fps.

2) Use Textures?  I'm wondering if I convert an image to texture if JOGL can do the rotation for me.

3) Any other ideas?

Offline lhkbob

JGO Knight


Medals: 32



« Reply #1 - Posted 2009-12-03 15:37:18 »

Yes you'll need to use textures.  This is pretty easy to do.  The first step is to create a texture object to use the byte[] data from your loaded image.  Then you draw a quad that contains the entire image and when you want the image rotated, you rotate the quad.

Offline 8ballj

Senior Newbie





« Reply #2 - Posted 2009-12-25 21:08:24 »

excellent, thanks!
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