//written by Daniel Sauter
//updated by AnnMarie Cernoch
//2007
//3 strips of pixbugs

int num = 100; // number of objects
int[] posX = new int[num];
int[] posY = new int[num];
int[] speedX = new int[num];
int[] speedY = new int[num];
boolean col;
int k = 0;
int i=1;
int value=0;

void setup() {
  size(700, 700, P3D);
  noStroke();
  for (int i = 0; i < num; i++) { // shuffle initial positions and direction
    speedX[i] = int(random(1)+1);
    speedY[i] = int(random(.5)+1);
    posX[i] = int(width/2);
    posY[i] = int(random(height-30))+10;
  }
}
void draw() {
  background(0);
  translate(width/2,height/2, -700);
  rotate(radians(i++)); //main rotate over all matriese
  
  pushMatrix();
  for (int i = 0; i < num; i++) {
    posX[i]+=speedX[i];
    posY[i]+=speedY[i];
    for (int j = 0; j < num; j++) {
      if (dist(posX[i], posY[i], posX[j], posY[j]) < 20 && j != i) {
        speedX[i]=-speedX[i];
        speedX[j]=-speedX[j];
      }
    }
    if (posX[i] > width/2 || posX[i] < width/2) {
      speedX[i]=-speedX[i];
    }
    if (posY[i] > height || posY[i] < 0) {//|| posY[i] < 0
      // posY[i] = 0;
      speedY[i]=-speedY[i];
    }
    fill(255,0,0);

    ellipse(posX[i], posY[i],2,2);
  }
  popMatrix();
  //---------------------------------------------------------------------------
  translate(150,0);
  pushMatrix();
  for (int i = 0; i < num; i++) {
    posX[i]+=speedX[i];
    posY[i]+=speedY[i];
    for (int j = 0; j < num; j++) {
      if (dist(posX[i], posY[i], posX[j], posY[j]) < 20 && j != i) {
        speedX[i]=-speedX[i];
        speedX[j]=-speedX[j];
      }
    }
    if (posX[i] > width/2 || posX[i] < width/2) {
      speedX[i]=-speedX[i];
    }
    if (posY[i] > height || posY[i] < 0) {//|| posY[i] < 0
      // posY[i] = 0;
      speedY[i]=-speedY[i];
    }
    fill(0,255,0);

    ellipse(posX[i], posY[i], 2,2);
  }
  popMatrix();

  translate(-290,0);
  pushMatrix();
  for (int i = 0; i < num; i++) {
    posX[i]+=speedX[i];
    posY[i]+=speedY[i];
    for (int j = 0; j < num; j++) {
      if (dist(posX[i], posY[i], posX[j], posY[j]) < 20 && j != i) {
        speedX[i]=-speedX[i];
        speedX[j]=-speedX[j];
      }
    }
    if (posX[i] > width/2 || posX[i] < width/2) {
      speedX[i]=-speedX[i];
    }
    if (posY[i] > height || posY[i] < 0) {//|| posY[i] < 0
      // posY[i] = 0;
      speedY[i]=-speedY[i];
    }
    fill(0,0,255);

    ellipse(posX[i], posY[i], 2,2);
  }
  popMatrix();
}
void mousePressed()
{

//rotate(10);
 // setup();
}