/*Drew Cogbill
 Image 4.3
 [computation08]*/

PImage img1, img2;

void setup() { 
  size(500, 375); 
  img1 = loadImage("dickson.jpg"); 
  img2 = loadImage("tree.jpg"); 
} 
void draw() { 
  background(255); 
  image(img1, 0, 0); 
  int my = constrain(mouseY, 0, 325); 
  int mx = constrain(mouseX, 0, 450);
  copy(img2, mx, my, 50+pmouseX-mouseX, 50+pmouseY-mouseY, mx, my, 50+pmouseX-mouseX, 50+pmouseY-mouseY); 
}