MARKUS

                if (!bIsFixed)

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Media;

namespace KCOM.Common

{

    public static class MathHelper

    {

        public static Point RotatePoint(Point p1, Point p2, double angle)

        {

            double radians = ConvertToRadians(angle);

            double sin = Math.Sin(radians);

            double cos = Math.Cos(radians);

            // Translate point back to origin

            p1.X -= p2.X;

            p1.Y -= p2.Y;

            // Rotate point

            double xnew = p1.X * cos - p1.Y * sin;

            double ynew = p1.X * sin + p1.Y * cos;

            // Translate point back

            Point newPoint = new Point((int)xnew + p2.X, (int)ynew + p2.Y);

            return newPoint;

        }

        public static double ConvertToRadians(double angle)

        {

            return (Math.PI / 180) * angle;

        }

        public static Rect RotateRect(Rect rect,double angle)

        {

            Rect result = rect;

            Point[] cornerPoints = { rect.TopLeft, rect.TopRight, rect.BottomRight, rect.BottomLeft };

            var m = new Matrix();

            //define rotation around rect center

            m.RotateAt(45.0, rect.X + rect.Width / 2.0, rect.Y + rect.Height / 2.0);

            //transform corner points

            m.Transform(cornerPoints);

            result = new Rect(cornerPoints[0], cornerPoints[2]);

            return result;

        }

    }

}

                Point setPoint = new Point(GetPosition(thumb).X, GetPosition(thumb).Y);

                //System.Diagnostics.Debug.WriteLine($"1. GetPoint : {GetPosition(thumb).X},{GetPosition(thumb).Y}  Change Value : {newHorizontalChange},{newVerticalChange}");

                AdornerMember control = CurrentAdornerMember(thumb);

                var commentInfo = (control.DrawingData) as CommentUserInfo;

                // 페이지회전에 따른 화살표텍스트 박스의 이동 수정

                var newpoint = MathHelper.RotatePoint(new Point(newHorizontalChange, newVerticalChange), new Point(), commentInfo.VisualPageAngle);

                var thumbPoint = MathHelper.RotatePoint(new Point(thumb.RenderSize.Width, thumb.RenderSize.Height), new Point(), commentInfo.VisualPageAngle);

                if ((setPoint.X + newpoint.X) < 0 || (setPoint.X + Math.Abs(thumbPoint.X) + newpoint.X) - ViewerDataModel.Instance.ImageViewWidth > 0)

                {

                    newpoint.X = 0;

                }

                if (setPoint.Y + newpoint.Y < 0 || (setPoint.Y + Math.Abs(thumbPoint.Y) + newpoint.Y) - ViewerDataModel.Instance.ImageViewHeight > 0)

                {

                    newpoint.Y = 0;

                }

                commentInfo.OnMoveCtrlPoint(setPoint, newpoint.X, newpoint.Y, ViewerDataModel.Instance.IsAxisLock || ViewerDataModel.Instance.IsPressShift);

                //System.Diagnostics.Debug.WriteLine($"3. GetPoint : {GetPosition(thumb).X},{GetPosition(thumb).Y}");

                //System.Diagnostics.Debug.WriteLine($"4. GetPoint : {GetPosition(thumb).X},{GetPosition(thumb).Y}");

               //System.Diagnostics.Debug.WriteLine($"5. GetPoint : {GetPosition(thumb).X},{GetPosition(thumb).Y}");

            }

        }

        private AdornerMember CurrentAdornerMember(MyThumb thumb)

        {

            AdornerMember result = null;

            try

            {

                result = (from userThumb in this.Members

                            where userThumb.ThumbList.Contains(thumb)

                            select userThumb).FirstOrDefault();

            }

            catch (Exception ex)

            {

                App.FileLogger.Error(ex);

            return result;

                    horzChange = 0;

                    vertChange = 0;

                this.TranslateItems(horzChange, vertChange);

    <Compile Include="Common\MathHelper.cs" />