/*
Some starter code for the green screen algorithm
*/
//Get the green screen image
var greenScreen = new SimpleImage("drewRobert.png");
//Get a background image
var background = new SimpleImage("dinos.png");
//Use the green screen image to make a new image that combines green screen and background
var greenWidth = greenScreen.getWidth();
var greenHeight = greenScreen.getWidth(); //Finsh this
var finalImage = new SimpleImage(greenWidth, greenHeight);//Add Values);
//Set a green pixel tolerance--change and see results
var greenTolerance = 200;
function makeGreenScreen() {
   
    //Loop through all the pixels of greenScreen
    for(var pixel of greenScreen.values()) {
       
        //Get the coordinates of current pixel
        var x = pixel.getX();
        var y = pixel.getY();//You finish
       
          //Determine if green pixel is above tolerance    
         if(pixel.getGreen() > 200) {
            var backgroundPix = background.getPixel(x, y); 
            finalImage.setPixel(x, y, backgroundPix); 
         }
         else {
             //Set it to the green screen pixel
             finalImage.setPixel(x, y, pixel)
             
         }
         
    }
   
    //Change the 3 to whatever will make the image fit your screen
    finalImage.setSize(greenWidth/3, greenHeight/3);
    print(finalImage);
}
//Call the above function
makeGreenScreen()