/* *
   * Define Dancing
   * -----------------
   * particle art
   *
   *
   * Erin K - November 4th 2008
   * RobotGrrl.com
   * 
   *
*/

import traer.physics.*;

Particle mouse, b, c, d, e, f, g, h, i;
ParticleSystem physics;

void setup() {
  size(800, 600);
  frameRate(24);
  smooth();
  ellipseMode( CENTER );
  noStroke();
  noCursor();
  
  physics = new ParticleSystem(0.1, 0.1);
  mouse = physics.makeParticle();
  mouse.makeFixed();
  
  b = physics.makeParticle(1.0, (width/2)-10, (height/2)+10, 0);
  c = physics.makeParticle(1.0, (width/2), (height/2)+10, 0);
  d = physics.makeParticle(1.0, random(0, width), random(0, height), 0);
  e = physics.makeParticle(1.0, random(0, width), random(0, height), 0);
  f = physics.makeParticle(1.0, random(0, width), random(0, height), 0);
  g = physics.makeParticle(1.0, random(0, width), random(0, height), 0);
  h = physics.makeParticle(1.0, random(0, width), random(0, height), 0);
  i = physics.makeParticle(1.0, random(0, width), random(0, height), 0);
  
  physics.makeAttraction(mouse, b, 50000, 100);
  physics.makeAttraction(mouse, c, 50000, 100);
  physics.makeAttraction(mouse, d, 50000, 100);
  physics.makeAttraction(mouse, e, 50000, 100);
  physics.makeAttraction(mouse, f, 50000, 100);
  physics.makeAttraction(mouse, g, 50000, 100);
  physics.makeAttraction(mouse, h, 50000, 100);
  physics.makeAttraction(mouse, i, 50000, 100);
  
  physics.makeAttraction(b, c, 10000, 10);
  physics.makeAttraction(b, d, -10000, 10);
  physics.makeAttraction(b, e, 10000, 10);
  physics.makeAttraction(b, f, -10000, 10);
  physics.makeAttraction(b, g, 10000, 10);
  physics.makeAttraction(b, h, -10000, 10);
  physics.makeAttraction(b, i, 10000, 10);
  
  physics.makeAttraction(c, d, 1000, 15);
  physics.makeAttraction(c, e, -1000, 15);
  physics.makeAttraction(c, f, 1000, 15);
  physics.makeAttraction(c, g, -1000, 15);
  physics.makeAttraction(c, h, 1000, 15);
  physics.makeAttraction(c, i, -1000, 15);
  
  physics.makeAttraction(d, e, -5000, 5);
  physics.makeAttraction(d, f, 5000, 5);
  physics.makeAttraction(d, g, -5000, 5);
  physics.makeAttraction(d, h, 5000, 5);
  physics.makeAttraction(d, i, -5000, 5);
  
  physics.makeAttraction(e, f, -10000, 10);
  physics.makeAttraction(e, g, -10000, 10);
  physics.makeAttraction(e, h, -10000, 10);
  physics.makeAttraction(e, i, -10000, 10);
  
  physics.makeAttraction(f, g, 10000, 20);
  physics.makeAttraction(f, h, 10000, 20);
  physics.makeAttraction(f, i, 10000, 20);
  
  physics.makeAttraction(g, h, -10000, 10);
  physics.makeAttraction(g, i, -10000, 10);
  
  physics.makeAttraction(h, i, 10000, 10);
  
  colorMode(HSB, 100);
}

void draw() {
  mouse.moveTo(mouseX, mouseY, 0);
  handleBoundaryCollisions(b);
  handleBoundaryCollisions(c);
  handleBoundaryCollisions(d);
  handleBoundaryCollisions(e);
  handleBoundaryCollisions(f);
  handleBoundaryCollisions(g);
  handleBoundaryCollisions(h);
  handleBoundaryCollisions(i);
  physics.tick();
  
  fill(color(90, 100, 100, 100));
  ellipse(mouse.position().x(), mouse.position().y(), 35, 25);
  
  fill(color(80, 100, 100, 100));
  ellipse(b.position().x(), b.position().y(), 35, 25);
   
  fill(color(70, 100, 100, 100));
  ellipse(c.position().x(), c.position().y(), 35, 25);
  
  fill(color(60, 100, 100, 100));
  ellipse(d.position().x(), d.position().y(), 35, 25);
  
  fill(color(40, 99, 99, 100));
  ellipse(e.position().x(), e.position().y(), 35, 25);
  
  fill(color(30, 99, 99, 100));
  ellipse(f.position().x(), f.position().y(), 35, 25);
  
  fill(color(20, 99, 99, 100));
  ellipse(g.position().x(), g.position().y(), 35, 25);
  
  fill(color(10, 99, 99, 100));
  ellipse(h.position().x(), h.position().y(), 35, 25);
  
  fill(color(5, 99, 99, 100));
  ellipse(i.position().x(), i.position().y(), 35, 25);
  
  fill(color(0,0,0,25));
  rect(0, 0, width, height);
  
}

void handleBoundaryCollisions( Particle p ) {
  if ( p.position().x() < 0 || p.position().x() > width ) {
    p.setVelocity( -0.9*p.velocity().x(), p.velocity().y(), 0 );
  }
  if ( p.position().y() < 0 || p.position().y() > height ) {
    p.setVelocity( p.velocity().x(), -0.9*p.velocity().y(), 0 );
  }
  p.moveTo( constrain( p.position().x(), 0, width ), constrain( p.position().y(), 0, height ), 0 ); 
}