Particle.pde

class Particle
{
 PVector loc;
 float life, lifeRate;
 float particleSize; 
 
 Particle() 
 {
   getPosition();
   //life = random(0.75, 1.25);
   life = random(6, 9);
   lifeRate = random(0.005, 0.75);
   particleSize = 7;
 }
 
 void update()
 {
  float angle = noise(loc.x * 0.01, loc.y*0.01) * TWO_PI;
  PVector vel = PVector.fromAngle(angle + globalRotation);
  loc.add(vel);
  life -= lifeRate;
 }
 
 void display()
 {
  boolean special = random(1) < 0.001;
  //strokeWeight(special ? random(0.75, 10) : 0.75);
  strokeWeight(particleSize);
  //noStroke();
  fill (255, special ? random(175, 255) : 65);
  stroke (255, special ? random(175, 255) : 65);
  //point (loc.x, loc.y);
  ellipse(loc.x,loc.y,particleSize,particleSize);
 }
 
 //get a random position from w/in the text
 void getPosition()
 {
  while (loc == null || !isInText(loc)) loc = new PVector (random(width), random(height)); 
 }
 
 //return if point is inside the text
 boolean isInText(PVector v)
 {
  return pg.get(int(v.x), int(v.y)) == PGRAPHICS_COLOR; 
 }
}