Rotate imageData Through Color Wheel

Dar Scott dsc at swcp.com
Mon Oct 6 10:22:00 EDT 2003


On Sunday, October 5, 2003, at 11:38 PM, Sannyasin Sivakatirswami wrote:

> Has anyone written the code to rotate an image through the color 
> wheel--or a subset thereof, since 16  million is probably more than 
> any one would want to see, by poking the imageData of the image on 
> some kind of loop?

If the image is a solid color, then you can compute the four-byte pixel 
once and then replicate it for the number of pixels in the image.

Maybe it is possible to have a 1X1 pixel image (or some other small 
image) and have it resized to the size you want.

That reduces your problem to a single color calculation per frame.

Dar Scott




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