/* Lines and shadows: Generator by Soumyadeep Paul */

int max_cubes = 10;
  
void setup() 
{
  size(720, 480); 
  frameRate(2);
}

void draw() 
{
  background(255);
  stroke(0);
  point(10, 10);
  
  int random_num = int(random(1, max_cubes));  
  int i;
  for (i=0; i<random_num; i++) {
    Cubist cx = new Cubist();
    cx.sketch();
  }
  delay(4000);
  println("------------------------- next cycle --------------------");
}

class Cubist
{
  int x1, y1, x2, y2;
  int xmax, ymax, xmin, ymin;
  float alpha_fall;
  float pixel_density;
  
  Cubist() {
    x1 = int(random(width));
    y1 = int(random(height));
    x2 = int(random(width));
    y2 = int(random(height));  
    
    if (x1>x2) {xmax=x1; xmin=x2;}
    else {xmax=x2; xmin=x1;}

    if (y1>y2) {ymax=y1; ymin=y2;}
    else {ymax=y2; ymin=y1;}
    
    alpha_fall = random(1.0);
    pixel_density = random(1, 3);
    
    println (x1 + "," + y1 + "," + x2 + "," + y2);
    println (alpha_fall);
    println (pixel_density);
  }  
  
  void sketch() {
    int i, j;

    for (i=ymin; i<ymax; i++) {
      pixel_density = random(1, 3);
      int j_growth = int((i-ymin+1)*pixel_density);
      float opacity = alpha_fall;
      for (j=xmin; j<xmax; j=j+j_growth) {
        stroke(0);
        point(j, i);
        point(i, j);
        //println("Drawing..." + i + "," + j);
      }
    }
    
    //line(x1, y1, x2, y2);
  }
}