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Index › Programming Questions & Help › Syntax Questions › BLUR keyword slowing program

Neo_proc Junior Member Offline Posts: 66	BLUR keyword slowing program Mar 23rd, 2007, 3:45pm   hi i've just started writing a program which involves blurred lines. ive only put a small amount of code in which involves blurred lines  moving..but the program is running very slow and lagging.can anyone tell me why? is BLUR causing a problem?

fjen God Member Offline Posts: 965	Re: BLUR keyword slowing program Reply #1 - Mar 23rd, 2007, 4:26pm   hard to say without any code ... maybe you can post what you have so far? blur is a pixel-based filter, so depending on how often you use it in your code it will sure slow things down bacause it runs thru all pixels it's applied on. i don't think this is "a problem", rather wrong usage. F

Neo_proc Junior Member Offline Posts: 66	Re: BLUR keyword slowing program Reply #2 - Mar 23rd, 2007, 4:29pm   As i said its only a small piece. Can you help? int vx; int x = 10; int vy; void setup(){  size(500,500);   smooth(); frameRate(30);    background(0); } void draw(){ filter(BLUR,1); stroke(255); line(30, 20, 155, 145); x = x + 2; stroke(255); int vx = int(random(3))-1;    int vy = int(random(3))-1; line(x, 20, 195, 145);  }

fjen God Member Offline Posts: 965	Re: BLUR keyword slowing program Reply #3 - Mar 23rd, 2007, 5:23pm   i think filter( BLUR, .. ) might not have been ment to be used every frame. looks like it's really slow ... you might want to look at other faster blur-code: http://noise.me.uk/video/gol2/ http://builtwithprocessing.org/browse.php?s=blur best, F