We closed this forum 18 June 2010. It has served us well since 2005 as the ALPHA forum did before it from 2002 to 2005. New discussions are ongoing at the new URL http://forum.processing.org. You'll need to sign up and get a new user account. We're sorry about that inconvenience, but we think it's better in the long run. The content on this forum will remain online.
Index › Programming Questions & Help › Syntax Questions › clear Image Buffer
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1
clear Image Buffer (Read 479 times)
moka
clear Image Buffer
Feb 27th, 2008, 11:47am  
Hi,

I am currently working on a program that compares the pixels[] array of the stage with the pixels array of a PGraphics image buffer. I do that many times in a row and simply overwrite the PGraphics Object like this:

 nimg = createGraphics(width, height, JAVA2D);
 nimg.beginDraw();
 nimg.fill(0, 0, 0);
 nimg.smooth();
 nimg.noStroke();
 nimg.translate(x, y);
 nimg.rotate(random(PI));
 nimg.rect(-radius/2, -radius/2, radius, radius);
 nimg.endDraw();

the problem is, that after some time i get a java.lang.OutOfMemoryError: Java heap space even though I give Processing 1 GB of RAM to work with. So I guess the image buffer does not really get cleared so that after some time the 1GB are full and the error shows up.

Is there a work around for this problem?
Back to top
 
 
antiplastik
Re: clear Image Buffer
Reply #1 - Feb 27th, 2008, 3:28pm  
Is it because you create the buffer more than once?

Try calling createGraphics(...) only once in setup, and just calling fill(0, 0, 0) when you want to clear it.
Back to top
 
WWW  
moka
Re: clear Image Buffer
Reply #2 - Feb 27th, 2008, 3:57pm  
I think I solved it. the error was caused by something else i guess.-

thanks anyways!
Back to top
 
 
Page Index Toggle Pages: 1
‹ Previous Topic | Next Topic ›