sine_draw

//Thanks to Abe Pazos for making his awesome tutorials 

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float x = 0;

float a = 0;

​

void setup(){

  size(500,500);

  background (0);

  noStroke();

  colorMode(HSB, 100);

}

​

void draw(){

  //movement of ellipses

  float x = map(sin(a)*sin(a*0.4), -1, 1, 0, width);

  float y = map(sin(a*1.1+1.5)*sin(a*2.1), -1,1,0, height);

  //change colors based on sine wave

  float clr = map(sin(a*0.13), -1,1,0,100);

  //size of circle

  float sze = map(sin(a*1.0)*sin(a*2.3), -1,1,5,30);

  //fade in and out

  float bright = map(sin(a*1.3)*sin(a+2.1),-1,1,10,65);

  fill(clr, 50, bright);

  ellipse(x,y,sze,sze);

  a = a + 0.03;

}

​