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Index › Programming Questions & Help › Syntax Questions › Offset pixel to distort texture/image
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Offset pixel to distort texture/image (Read 713 times)
moka
Offset pixel to distort texture/image
Feb 21st, 2008, 2:00pm  
Hello.

Since I have never done anything similar I was wondering How I could distort a texture. I thought maybe I could use the img.pixels[] array to offset each pixel depending on certain rules (for example noise values). But apparently I can only affect the color value through the pixels[] array. The Distort filters in Photoshop would propably describe best what I am looking for.
Id be glad if anyone yould give me a hint!
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extrapixel
Re: Offset pixel to distort texture/image
Reply #1 - Feb 21st, 2008, 2:06pm  
hi, check out http://processing.org/reference/vertex_.html, the vertex(x,y,u,v) might be what you're looking for. I normally start off with some kind of rectangular grid, and start to move nodes around to distort/warp.
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moka
Re: Offset pixel to distort texture/image
Reply #2 - Feb 21st, 2008, 2:14pm  
oh, hwo could I oversee this. I think I could get this to work. is there any other way?
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extrapixel
Re: Offset pixel to distort texture/image
Reply #3 - Feb 21st, 2008, 2:23pm  
it's the easiest way i know. of course you can also cycle through pixels[] and move them arround, but you then have to interpolate the upcoming gaps between the pixels yourself. but hey, that's just what i figured, i'm pretty sure there are many other ways to distort images.
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