concentricsquares.java

/**
* This function draws a randomised set of squares inside each other
* They are of different shapes, colours and strokeweight
* it works with 2 parameters (x and y)
* x: the starting postion of pixels from top left
* y: the starting postion of pixels from top right
* playing with integer size will change position of sqaure
**/
void drawConcentricSquares(float x, float y) {
 
  rectMode(CENTER);
  for (int i = 0; i < 100; i = i + 11) {
    rect(random(10) + x, random(10) + y, i, i);
    if (i%2 == 0) { // if i is even then..
      strokeWeight(0.5);
      stroke(0); // strokeweight 0.5 in black
    } else { // otherwise 
      strokeWeight(1.3);
      stroke((0),random(255),random(255)); // strokeweight 1.3, in random blue or green
    }
  }
}