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Index › Programming Questions & Help › Programs › Redo on Click
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Redo on Click (Read 435 times)
Riaz
Redo on Click
Jan 8th, 2009, 9:15am  
How do I get this sketch to repaint the background after clicking the mouse? I can't figure it out...

void setup()
{
 size(500, 500);

 background (256, 256, 256);
 noStroke();
 smooth();

 drawCircles(250, 250, 100, 10);
}
 
// Circle splatter machine

void drawCircles(float x, float y, int radius, int level)
{
 float tt = 126 * level / 6.0;
 fill (tt, 0, 116);
 ellipse(x, y, radius*2, radius*2);
 if (level > 1) {
   level = level - 1;
   int num = int (random(2, 5));
   for(int i=0; i<num; i++) {
     float a = random(0, TWO_PI);
     float nx = x + cos(a) * 6.0 * level;
     float ny = y + sin(a) * 6.0 * level;
     drawCircles(nx, ny, radius/2, level);
   }
 }
}
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steven
Re: Redo on Click
Reply #1 - Jan 8th, 2009, 10:19am  
Add this to your code

Code:

void draw() {
}

void mousePressed() {
  background (255, 255, 255);
  drawCircles(250, 250, 100, 10);  
}


Without the empty draw, the sketch stops listening for clicks.

Also, the maximum RGB value is 255 and not 256... remember the 0 counts... so 0 to 255 = 256 values! Smiley

Cheers
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« Last Edit: Jan 9th, 2009, 6:54am by steven »  
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Riaz
Re: Redo on Click
Reply #2 - Jan 8th, 2009, 9:07pm  
YAY! that's awesome. Thanks so much. Happy
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Riaz
Re: Redo on Click
Reply #3 - Jan 9th, 2009, 3:51am  
ahhh that empty draw! who would have thought.
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