/**
waves by guru <a href="http://www.local-guru.net/guru">guru</a>
*/

void setup() {
  size(300,300);
  smooth();
}


void draw() {
  background(0);
  stroke(127);
  noFill();
  for( int y = 0; y< 60; y++) {
    beginShape();
    for( int x = 0; x<300; x++) {
      vertex( x,  y*5+ sin( (y-30)*((mouseY+1.0)/600)*TWO_PI*(x-300+mouseX)/360   )*4);
    }
    endShape();
  }
  
}