c# – 获取WPF路径的长度

我使用PathGeometry绘制了一条线.使用
Getting Geometry length的引用,我使用GetFlattenedPathGeometry方法得到路径长度,该方法将路径转换为一系列直线,并将线长加起来.引用的代码是

public static double GetLength(this Geometry geo)
    {
        PathGeometry path = geo.GetFlattenedPathGeometry();

        double length = 0.0;

        foreach (PathFigure pf in path.Figures)
        {
            Point start = pf.StartPoint;

            foreach (PolyLineSegment seg in pf.Segments)
            {
                foreach (Point point in seg.Points)
                {
                    length += Distance(start, point);
                    start = point;
                }
            }
        }

        return length;
    }

    private static double Distance(Point p1, Point p2)
    {
        return Math.Sqrt(Math.Pow(p1.X - p2.X,2) + Math.Pow(p1.Y - p2.Y,2));
    }

还有其他更好的方法来获取PathGeometry的长度吗?

最佳答案 只需很少的努力就可以将System.Windows.Media.Geometry转换为具有
ComputeLength功能的SharpDX.Direct2D1.Geometry:

Calculates the length of the geometry as though each segment were
unrolled into a line.

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