PatientShiftViewModel.txt

        private PatientShiftModel _xShift;

        public PatientShiftModel XShift
        {
            get { return _xShift; }
            set { SetProperty(ref _xShift, value); }
        }
        private PatientShiftModel _yShift;

        public PatientShiftModel YShift
        {
            get { return _yShift; }
            set { SetProperty(ref _yShift, value); }
        }
        private PatientShiftModel _zShift;
        private PlanSetup _plan;

        public PatientShiftModel ZShift
        {
            get { return _zShift; }
            set { SetProperty(ref _zShift, value); }
        }
        public PatientShiftViewModel(PlanSetup plan)
        {
            _plan = plan;
            GetCouchShifts();
        }

        private void GetCouchShifts()
        {
            Beam b1 = _plan.Beams.Where(x => !x.IsSetupField).OrderBy(x => x.BeamNumber).FirstOrDefault();
            var uo = _plan.StructureSet.Image.UserOrigin;
            if (b1 != null)
            {
                double x = (uo.x - b1.IsocenterPosition.x) / 10.0;
                double y = -(uo.y - b1.IsocenterPosition.y) / 10.0;
                double z = (uo.z - b1.IsocenterPosition.z) / 10.0;
                XShift = new PatientShiftModel
                {
                    Magnitude = x,
                    ShiftDirection = ShiftDirectionEnum.XDir,
                    ShiftText = Math.Abs(x) < 0.01 ? "No Shift" :
                    x < 0 ? $"Left: {Math.Abs(x):F2}" : $"Right: {Math.Abs(x):F2}"
                };
                YShift = new PatientShiftModel
                {
                    Magnitude = y,
                    ShiftDirection = ShiftDirectionEnum.YDir,
                    ShiftText = Math.Abs(y) < 0.01 ? "No Shift" :
                    y < 0 ? $"Down: {Math.Abs(y):F2}" : $"Up: {Math.Abs(y):F2}"
                };
                ZShift = new PatientShiftModel
                {
                    Magnitude = z,
                    ShiftDirection = ShiftDirectionEnum.ZDir,
                    ShiftText = Math.Abs(z) < 0.01 ? "No Shift" :
                    z < 0 ? $"Out: {Math.Abs(z):F2}" : $"In: {Math.Abs(z):F2}"
                };
            }
        }