class Webcam extends PImage {

  int BRIGHTNESS_THRESHOLD = 255;
  int PARTICLE_SPACING = 15;
  boolean PARTICLES_VISIBLE = false;
  
  Vector webcamParticles;


  Webcam(int w, int h) {
    super(w,h);
    webcamParticles = new Vector();
  }


  void imageToParticleVector(Particles particles) {
    
    for (int i=0;i<webcamParticles.size();i++) particles.remove((Particle)webcamParticles.elementAt(i));
    webcamParticles.clear();

    for (int x=0;x<width;x+=PARTICLE_SPACING) for (int y=0;y<height;y+=PARTICLE_SPACING) {
      if (brightness(get(x,y))<BRIGHTNESS_THRESHOLD) {
        Particle particle = new Particle(x,y);
        particle.pos.set(x,y);
        particle.UNMOVABLE=true;
        particle.COL_R=255;
        particle.COL_G=0;
        particle.COL_B=0;
        particle.OPACITY=128;
        particle.VISIBLE=PARTICLES_VISIBLE;
        particle.REMOVABLE_FOR_FRAMERATE=false;
        particles.addParticle(particle);
        webcamParticles.add(particle);
      }
    }
  } 
  
}