/**
FeedbackGlareDemo.pde<br>
Dave Bollinger Jun 2007<br>
http://www.davebollinger.com<br>
<br>
Usage:  move the mouse to move the "camera" relative to the screen.<br>
<br>
*/
//import processing.opengl.*;
PImage glare;
MousedFeedbackTexture fbtex;

void setup() {
//  size(256,256,OPENGL);
  size(256,256,P3D);
  fbtex = new MousedFeedbackTexture(this);
  // use two GIFs instead of one PNG for better online support...
  glare = loadImage("glare_rgb.gif");
  PImage msk = loadImage("glare_a.gif");
  glare.mask(msk);
}

void draw() {
  background(0);
  // draw feedback background
  fbtex.draw(); // draw feedback background
  // "glare" always occurs at same place on "screen"
  image(glare, width/2f-50, height/2f-50, 100, 100);
  // grab new feedback texture
  fbtex.grab();
}