Week III of ICM

SquareSpin.java

int count = 0;
SquareSpin[] square = new SquareSpin[300];

void setup() {
 size(662, 300);
 for (int a = -320; a <= 320; a = a + 40) {
  for (int b = -320; b <= 320; b = b + 40) {
    square[count] = new SquareSpin(a, b);
    count++;
  }
 }
}

void draw() {
 background(255);
 pushMatrix();
 translate(width/128, height/128);
 
 int f = 0;
 float d = map(mouseX, 0, width, 5, 100);
 while (f < count) {
   square[f].go();
   square[f].show();
   square[f].updateSize(d);
   f++;
 }
popMatrix();
}

class SquareSpin {
  float speed = random(-0.05, 0.05);
  float angle = 0;
  float d = 20;
  int x, y;
  
  SquareSpin(int xpos, int ypos) {
    x = xpos;
    y = ypos; 
  }
  
  void go() {
    angle += speed;
  }
  
  void show() {
    pushMatrix();
    translate(((width/2)+x), ((height/2)+y));
    rotate(angle);
    rectMode(CENTER);
    noFill();
    rect(x/128, y/128, d, d);   popMatrix();
  }
  
  void updateSize(float size) {
    d = size;
  }
}