         cacheImage = nil
         self.drawingPath.removeAllPoints()
         self .setNeedsDisplay()
+        indicatorLabel.hidden = false
     }
     
     func saveAction(){

        self.currentTrackIndex  = 0
        let touch:UITouch! = touches.first;
        points[0] = touch.locationInView(self)
        
    }
    
    override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {

import UIKit
import SnapKit


protocol RJSignViewDelegate{
    /**
     save current image
     */
    func signViewDidSave(image :UIImage?)
}

