//Anders Joura
//10/27/09
//This program takes a particularly ferocious Aztec painting and, when the
//mouse is clicked, puts an ellipse at the point clicked, creates a
//Bezier-based shape radiating from the disco-ball like object in the
//center of the painting to the point clicked, and scatters around several 
//ellipses besides. All pixels that fall within these shapes turn
//(appropriately enough for the Aztecs) various shades of blood red. The
//picture can be put back to normal by pressing the "a" key. The program is
//best experienced clicking in a wide circle around the disco ball.
PImage img;

void setup() {
  size(1433,691);
  background(0);
  colorMode(HSB,360,100,100);

  noStroke();
  smooth();
  img = loadImage("AZTEC.png");
  image(img,0,0);

}
void draw() {
}
void mousePressed() {
  int h, b, j, i, currentIndex = mouseX-1 + (mouseY-1)*img.width;
  color currentPixelColor;
  img.loadPixels();
  for (h=0,b=0,j = 0; j<3; j++) {
    for (i = 0; i<3; i++) {
      h += hue(img.pixels[currentIndex+i]);
      b += brightness(img.pixels[currentIndex+i]);
    }

  }
  fill(color(h*70,constrain(b*9+20,0,100), 100,70));
  ellipse(mouseX, mouseY, random(10, 80), random(10, 80));
  ellipse((mouseX*random(0.3, 0.7)), (mouseY*random(0.2, 0.8)), random(30,20), random(10,40));
  ellipse((mouseX*random(0.7, 0.8)), (mouseY*random(0.2, 0.9)), random(10,50), random(10,25));
  ellipse(mouseX*(random(3,6)), (mouseY*random(2,5)), random(20,30), random(20,40));
  ellipse(mouseX*(random(1,7)), (mouseY*random(4,5)), random(20,30), random(20,40));
  bezier(mouseX, mouseY, random(400,800), random(400,800), random(600,1000), random(600,1000), 735, 210);
}

void keyPressed() {
  if (key=='a') {
    image(img, 0, 0);
  }
}