void InteractionRectangle(ref structRectangle rectangle, Joint joint)
 {
     if ((countdown.Elapsed - rectangle.beginTime).Seconds > 1)
     {
         canvas.Children.Add(rectangle.rect);
        
         if (joint.Intersection(rectangle.rect))
         {
             switch (joint.JointType)
             {
                 case JointType.HandLeft:
                     if (rectangle.handState == leftHandState)
                         UpdateRectangleThingsMain(ref rectangle);
                     break;
                 case JointType.HandRight:
                     if (rectangle.handState == rightHandState)
                         UpdateRectangleThingsMain(ref rectangle);
                     break;
             }
         }
     }
 }