/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.LKQVSg704mp/rev.497
 * 
 * authors: 
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 *   Fergus Ray Murray
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 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



float x, y, seed=5.2195, f; // Each seed value gives a different fractal.
double df=0, ddf=TWO_PI*seed, dddf=0.0000001; // dddf controls how much the fractal changes with each frame.
int i=0;
void setup() { // 'setup' is called just once, when the program is run.
  size(300, 300); // Tell Processing how big a window it should use.
}
void draw() { // 'draw' is called every time the program draws a frame.
  // We need to reset most of the variables every frame.
  x=width/2;
  y=height/2;
    x2=width/3;
  y2=height/3;
  f=0;
  df=0;
  background(255); // This fills in the frame with a white background.
  for (i=0; i<10000; i+=1) { // Repeat the next block times.
    f+=df-.1*sin(df);
    df+=ddf;
    x+=cos(f);
    y+=sin(f);
    stroke(134,i/10000*255,255 - i/10000*255);
    point(x, y);
    x2+=cos(f*3);
    y2+=sin(f+f);
    point(x2,y2);
  }
  
  ellipse(x+385.56*sin(ddf*385.56), y+385.56*cos (ddf*385.56),64, 64);
  ddf+=dddf; // So ddf changes every frame, causing animation to happen.
}