class Controller {
    int x, y,w;
    int ctrlX, ctrlY;
    color inner, outer;
    boolean onInner, onOuter;
    int outerSize;
    float r;
    
    Controller ( int inX, int inY, int inW, int inR) {
      x = inX;
      y = inY;
      w = inW;
      r = inR;
     ctrlX = inX;
     ctrlY = inY;
     inner = color(110);
     outer = color(200);
     outerSize = 5;
     onOuter = false;
     onInner = false;
   }
    
    void run() {
        drawPanel();
        checkPanel();
        innerControl(); 
        outerControl();
   }


  void innerControl() {
   if (controllerOver == true && onOuter == false) {
       if (overCircle(ctrlX,ctrlY,r) == true) {
            onInner = true;
            inner = color(150);
            if (mousePressed == true) {
               ctrlX = mouseX;
               ctrlY = mouseY;
            }
       } else {
            inner = color(110);
            onInner = false;
       }
      }
 
   nIncr = map(ctrlX,x-w/2,x+w/2,.001,.03);   
  amp = map(ctrlY,y+w/2,y-w/2,1,10);   
}
   
    
  void outerControl() {

    
    if (controllerOver == true) {
       if (overCircle(ctrlX,ctrlY,r) == false && overCircle(ctrlX,ctrlY,r+outerSize) == true) {
         outer = color(225);
           if (mousePressed == true) {
                            onOuter = true;
           }
           
            }
       } else {
            outer = color(160);
       }
     
     if (onOuter == true) {
      if (mousePressed == true) { 
       r = constrain(2*dist(ctrlX,ctrlY,mouseX,mouseY), 10, w);
      } else {
        onOuter = false;
      }
   }
       
       xoffset = map(r,0,w,1,10);
       

  }

    void drawPanel() {
      rectMode(CENTER);
      fill(255,30);
      stroke(255,80);
      ellipse(x,y,w,w);
      line(x,y-w/2,x,y+w/2);
      line(x-w/2,y,x+w/2,y);
      
      fill(outer);
      ellipse(ctrlX,ctrlY,r+outerSize,r+outerSize);
      
       fill(inner);
       ellipse(ctrlX,ctrlY,r,r);
      
    }

    void checkPanel() {
       if ( overCircle(x,y,w+10) == true) {
         controllerOver = true;
       } else {
         controllerOver = false;
       }
    }

    boolean overCircle(float x, float y, float diameter) {
        float disX = x - mouseX;
        float disY = y - mouseY;
        if(sqrt(sq(disX) + sq(disY)) < diameter/2 ) {
            return true;
          } else {
        return false;
        }
    }
}