rotatedrectangles.java

// This function draws rotated squares

void rotatedRect (int across, int down) {

  pushMatrix();
  translate(across, down);
  float rotation = random(360);       // rotation of square is random 360°
  rotate(radians(random(360)));

  if (  (rotation > 10) && (rotation < 50)  ) {
    fill(255, 0, 0, 80);
  } else {                      //  if rotation is greater than 10° and less than 50°, fill red with 80 transparency
    fill(255);
    stroke (255, 0, 0, 90);      // else  white box with red outline with 90 transparency
  }

  rect(0, 0, 70, 70);      // measurements of rectangle 
  popMatrix();
}