PImage monImageNoir;
PImage monImageLum;

void setup()
{
  monImageNoir = loadImage("consoles_noir.jpg");
  monImageLum = loadImage("consoles_lumR.jpg");
  size(monImageNoir.width/2, monImageNoir.height/2);
}

final int squareHeight = 200;

void draw()
{
  //copy(monImageNoir, 0, 0, monImageNoir.width, monImageNoir.height, 0, 0, monImageNoir.width, monImageNoir.height);
  //copy(monImageLum, mouseX-squareHeight, mouseY-squareHeight, squareHeight, squareHeight, mouseX-squareHeight, mouseY-squareHeight, squareHeight, squareHeight);
  
  copy(monImageNoir, 0, 0, monImageNoir.width, monImageNoir.height, 0, 0, monImageNoir.width/2, monImageNoir.height/2);
  copy(monImageLum, mouseX*2-squareHeight, mouseY*2-squareHeight, squareHeight, squareHeight, mouseX-squareHeight/2, mouseY-squareHeight/2, squareHeight/2, squareHeight/2);
}