Random Squares computer art, originally by Bill Kolomyjec

random_squares.pde

/*
Random Squares, originally by Bill Kolomyjec
*/

int max_sqrs = 9 ; 
int large_sqr_dim = 7;
int sqr_dim ; //= width / 7 ; 
int init_sqr_dim ; // = sqr_dim / 5 ;
boolean zero_sqr = false;

void setup(){
  size(560,560);
  background(255);
  sqr_dim = width/large_sqr_dim ;
  init_sqr_dim = sqr_dim / 5 ;
  float xcur;
  float ycur; 
  int cur_num_sqr ;
  for (int x = 0; x < large_sqr_dim; x++){
    for (int y =0; y < large_sqr_dim; y++){
      xcur = x*sqr_dim ;
      ycur = y*sqr_dim ; 
      cur_num_sqr = make_pyramid(xcur, ycur);
      println(cur_num_sqr);
      if (cur_num_sqr == 1 || cur_num_sqr == 0){
        zero_sqr = true;
      }
    }
  }
}

void draw(){

}

int make_pyramid(float x_pos, float y_pos){
  float init_sqrx = int(random(init_sqr_dim, sqr_dim - 2*init_sqr_dim));
  float init_sqry = int(random(init_sqr_dim, sqr_dim - 2*init_sqr_dim));
  int num_sqr = int(random(1,max_sqrs));
  while (num_sqr == 1 || num_sqr == 0) {
    if (zero_sqr == false){
      break ;
    }
    else if (zero_sqr == true){
      num_sqr = int(random(max_sqrs));
    }
  }


  int i = 1 ;
  float diffx = init_sqrx / (float) num_sqr ; 
  float diffy = init_sqry / (float) num_sqr ; 
  while (i < num_sqr){
    float next_sqrx = init_sqrx - i*diffx; 
    float next_sqry = init_sqry - i*diffy;
    //println(next_sqrx, next_sqry);
    float next_dim = init_sqr_dim + i*(sqr_dim - init_sqr_dim)/num_sqr ; 
    //println(next_dim);
    noFill();
    strokeWeight(1.5);
    rect(x_pos + next_sqrx,y_pos + next_sqry, next_dim, next_dim);
    i ++;
  }
  
  strokeWeight(1.5);
  rect(x_pos, y_pos, sqr_dim, sqr_dim);
  rect(x_pos + init_sqrx, y_pos + init_sqry, init_sqr_dim, init_sqr_dim);
  return num_sqr; 
}

void keyPressed(){
  
  if (key == 's'){
    PImage saveimg = createImage(width, height, RGB);
    saveimg.loadPixels();
    loadPixels();
    for (int y = 0; y < height; y++) {
       for (int x = 0; x < width; x++) {
         int loc = x + y*width;
         saveimg.pixels[loc] = pixels[loc];
       }
     }
     saveimg.save("final.png");
     println("Image saved");
     updatePixels();
  }
}