//----------------------Beginning of Part 2

 calcTone();
}
void calcTone(){
 toneMap[0] = color(red(refColor) + srOff.getValue(),green(refColor) + sgOff.getValue(),blue(refColor) + sbOff.getValue() );  
 
 float tr = (red(refColor)-(populationPerc[0]*red(toneMap[0])))/populationPerc[1];
 float tg = (green(refColor)-(populationPerc[0]*green(toneMap[0])))/populationPerc[1];
 float tb = (blue(refColor)-(populationPerc[0]*blue(toneMap[0])))/populationPerc[1];
 
 if (tr < 0 || tg < 0 || tb < 0 || tr > 255 || tg > 255 || tb > 255 ||
   red(toneMap[0]) < 0 || red(toneMap[0]) > 255 || green(toneMap[0]) < 0 || green(toneMap[0]) > 255 || blue(toneMap[0]) < 0 || blue(toneMap[0]) > 255 ){
   outOfGamut = true;
 }
 else{
   outOfGamut = false;
 }
 toneMap[1] = color(tr,tg,tb);                          
}
class Slider extends control{
 int min = 0;
 int span = 255;
 String label = "label";
 float value = .5;
 int locx, locy;
 Slider(String label, int locx, int locy, float value, int min, int span){
   this.min = min;
   this.span = span;
   this.label = label;
   this.locx = locx;
   this.locy = locy;
   this.value = value;
 }
 void draw(){
   stroke(255);
   fill(0,0,0,0);
   rect(locx ,locy,100,10);
   fill(255);
   rect(locx + value*90,locy,10,10);
   text(label + ":" + getValue(),locx,locy + 10);  
 }
 void handleInput(){
   int dx = (int)(mouseX - (locx + value*100));
   int dy = mouseY - locy;
   if (dy > 0 && dy < 10){
     if (dx > -50 && dx < 50){
       
       value += dx/100.f;
       if (value > 1.f) value = 1.f;
       if (value < 0.f) value = 0.f;
     }
   }
 }
   int getValue(){
   return (int)(min + value*span);
 }
}
abstract class control{
 abstract void draw();
 abstract void handleInput();
}
// This class is used to hold an image while on the clipboard.
   public static class ImageSelection implements Transferable {
       private Image image;
   
       public ImageSelection(Image image) {
           this.image = image;
       }
       // Returns supported flavors
       public DataFlavor[] getTransferDataFlavors() {
           return new DataFlavor[]{DataFlavor.imageFlavor};
       }
       // Returns true if flavor is supported
       public boolean isDataFlavorSupported(DataFlavor flavor) {
           return DataFlavor.imageFlavor.equals(flavor);
       }
       // Returns image
      public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
          if (!DataFlavor.imageFlavor.equals(flavor)) {
              throw new UnsupportedFlavorException(flavor);
          }
          return image;
      }
}