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Index › Programming Questions & Help › Syntax Questions › PNG transparency
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PNG transparency (Read 595 times)
wilson 619
PNG transparency
Oct 28th, 2009, 10:26am  
I'm using saveFrame to save the frame as a PNG.

Is there a way to set a color as the transparency?

ex. i have a white background that i want transparent in the PNG.
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blindfish
Re: PNG transparency
Reply #1 - Oct 28th, 2009, 10:58am  
My guess is that you could iterate over the PImage pixels[] array and set pixels that match the desired colour to be transparent.

Having said that you might want to check the reference for saveFrame, in particular the bit that says:

"All images saved from the main drawing window will be opaque. To save images without a background, use createGraphics()."
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Where is the what if the what is in why?
 
wilson 619
Re: PNG transparency
Reply #2 - Oct 28th, 2009, 12:59pm  
Thanks!

Using Graphics class did the trick
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