// Displays a portion of a loaded image.
// by Tim <http://tim.armatodesign.com>


// Created 04 October 2007

PImage tree2;
int newPixel = 5;
int start=0;

void setup(){
  tree2=loadImage("tree2.jpg");
  size(tree2.width, tree2.height); //sets sketch size by reading the pixel dimensions of loaded image
  noStroke();
  frameRate(30);
  image(tree2, 0, 0);
  loadPixels();
  background(0);
}

void draw(){
  for (int shizzleY=start; shizzleY<start+height/2; shizzleY++) { // increments rows
    for(int shizzleX=0; shizzleX<width; shizzleX++) { //
      fill(pixels[shizzleY*width+shizzleX]);
      rect(shizzleX, shizzleY, newPixel, newPixel);
    }
  }
}

void mousePressed() {
  start=abs(start-height/2);
  background(0);
}