exploring 2d arrays!

morespins.java

SquareSpin[][] square = new SquareSpin[1000][1000];
CircleSpin[][] circle = new CircleSpin[1000][1000];
int distance = 60;

void setup() { 
 size(662, 662);
 
 for (int a = 0; a <= width + distance; a = a + distance) {
  for (int b = 0; b <= height + distance; b = b + distance) {
    square[a/distance][b/distance] = new SquareSpin(a-320, b-320);
  }
 }

 for (int c = 0; c <= width + distance; c = c + distance) {
  for (int d = 0; d <= height + distance; d = d + distance) {
    circle[c/distance][d/distance] = new CircleSpin(c-320, d-320);
  }
 } 
}

void draw() {
 background(54, 161, 104);
 filter(INVERT);
 //frameRate(1);
 pushMatrix();
 translate(width/128, height/128);
 
 float f = map(mouseX, 0, width, 7, 100);
 float g = map(mouseY, 0, height, 7, 100);
 
for (int a = 0; a <= width + distance; a = a + 40) {
  for (int b = 0; b <= height + distance; b = b + 40) {
    square[a/distance][b/distance].go();
    square[a/distance][b/distance].show();
    square[a/distance][b/distance].updateSize(f);
  }
 }

 for (int c = 0; c <= width + distance; c = c + 40) {
  for (int d = 0; d <= height + distance; d = d + 40) {
    circle[c/distance][d/distance].go();
    circle[c/distance][d/distance].show();
    circle[c/distance][d/distance].updateSize(g);
  }
 }
 
popMatrix();
}

class Spin {
  float speed = random(-0.05, 0.05);
  float angle = 0;
  float d;
  int x, y;
  
  Spin(int xpos, int ypos) {
    x = xpos;
    y = ypos; 
  }
  
  void go() {
    angle += speed;
  }
  
  void updateSize(float size) {
    d = size;
  }
}

class SquareSpin extends Spin {
  SquareSpin(int x, int y) {
    super(x, y);
  }
   void show() {
    pushMatrix();
    translate(((width/2)+x), ((height/2)+y));
    rotate(angle);
    rectMode(CENTER);
    noStroke();
    fill(183, 223, 221, 180);
    rect(x/128, y/128, d, d);
    popMatrix();
  }
}

class CircleSpin extends Spin {
  CircleSpin(int x, int y) {
    super(x, y);
  }
   void show() {
    pushMatrix();
    translate(((width/2)+x), ((height/2)+y));
    rotate(angle);
    noFill();
    strokeWeight(2);
    stroke(12, 100, 150);
    ellipseMode(CORNER);
    ellipse(x/128, y/128, d, d);
    popMatrix();
  }
}