SuperMap.WindowsPhone.Core.GeoLineClip.ClipLineSegment C# (CSharp) Method

        private Point2D ClipLineSegment(Point2D p0, Point2D p1, Rectangle2D e)
        {
            Point2D point = new Point2D(p1.X, p1.Y);
            if (p1.X < e.Left)
            {
                point = EdgeIntersection(p0, p1, e.Left, false);
            }
            else if (p1.X > e.Right)
            {
                point = EdgeIntersection(p0, p1, e.Right, false);
            }
            if (point.Y < e.Bottom)
            {
                return EdgeIntersection(p0, p1, e.Bottom, true);
            }
            if (point.Y > e.Top)
            {
                point = EdgeIntersection(p0, p1, e.Top, true);
            }
            return point;
        }