我已经使用PathGeometry.With绘制了一条线。从获取几何长度的参考中,我使用 GetFlattenedPathGeometry 方法获得了路径的长度,该方法将路径转换为一系列直线,并将线的长度相加。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));
}
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有没有其他更好的方法来获得 PathGeometry 长度?