// Dartmouth CS 2, Winter 2009, Chris Bailey-Kellogg
// Notes 16 | Sketch 3
// Based on Reas & Fry Synthesis 1

// An array of images
PImage[] pix = new PImage[9];

void setup()
{
  size(800,600);
  background(255);
  tint(255, 200); // each will be a bit transparent
  // The images are named "dart1.jpg", "dart2.jpg", etc.
  for (int i=0; i<pix.length; i++)
    pix[i] = loadImage("dart"+(i+1)+".jpg");
}

void draw()
{}

void mousePressed()
{
  // Random member of the array
  PImage img = pix[int(random(pix.length))];
  pushMatrix();
  // Random position and rotation (not too much rotation, though)
  translate(random(width),random(height));
  rotate(random(-PI/4,PI/4));
  // Desired width is random; height preserves aspect ratio
  float w = random(200,400);
  float h = w*img.height/img.width;
  // By putting the corner of the image at (-w/2,-h/2),
  // we center it at the (translated) origin
  image(img,-w/2,-h/2,w,h);
  popMatrix();
}