public Skeleton (SimpleOpenNI _kinect, int _userId, boolean _fullBodyTracking) {
		kinect = _kinect;
		userId = _userId;
		fullBodyTracking = _fullBodyTracking;
		for (int i=0; i<15; i++){
			joint[i] = new PVector();
			jointLCS[i] = new PVector();
			jointOrientation[i] = new PMatrix3D();
			jointDelta[i] = 0f;
			jointUnmirrored[i] = new PVector();
			jointLCSUnmirrored[i] = new PVector();
			jointOrientationUnmirrored[i] = new PMatrix3D();
			jointDeltaUnmirrored[i] = 0f;
		}
		math = new SkeletonMath(this);
	}