topical media & game development

talk show tell print

graphic-processing-site-examples-Basics-Structure-Recursion-Recursion.pde / pde



  
Recursion. A demonstration of recursion, which means functions call themselves. Notice how the drawCircle() function calls itself at the end of its block. It continues to do this until the variable "level" is equal to 1.

  
   
  void setup() 
  {
    size(200, 200);
    noStroke();
    smooth();
    noLoop();
  }
  
  void draw() 
  {
    drawCircle(126, 170, 6);
  }
  
  void drawCircle(int x, int radius, int level) 
  {                    
    float tt = 126 * level/4.0;
    fill(tt);
    ellipse(x, 100, radius*2, radius*2);      
    if(level > 1) {
      level = level - 1;
      drawCircle(x - radius/2, radius/2, level);
      drawCircle(x + radius/2, radius/2, level);
    }
  }
  


(C) Æliens 20/2/2008

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.