c# - 从点列表构建 PathGeometry 而不创建大量其他类

Question

我正在尝试从自定义点列表构建一个简单的多边形 PathGeometry。我在msdn 网站上找到了以下代码，它似乎可以正常工作，只需对循环和添加 LineSegments 进行简单修改，但执行看似相对简单的任务似乎是一大堆不雅的混乱。有没有更好的办法？

PathFigure myPathFigure = new PathFigure();
myPathFigure.StartPoint = new Point(10, 50);

LineSegment myLineSegment = new LineSegment();
myLineSegment.Point = new Point(200, 70);

PathSegmentCollection myPathSegmentCollection = new PathSegmentCollection();
myPathSegmentCollection.Add(myLineSegment);

myPathFigure.Segments = myPathSegmentCollection;

PathFigureCollection myPathFigureCollection = new PathFigureCollection();
myPathFigureCollection.Add(myPathFigure);

PathGeometry myPathGeometry = new PathGeometry();
myPathGeometry.Figures = myPathFigureCollection;

Path myPath = new Path();
myPath.Stroke = Brushes.Black;
myPath.StrokeThickness = 1;
myPath.Data = myPathGeometry;

Answer 1

您可以将其包装在一个函数中，也可以合并一些语句。

Path makePath(params Point[] points)
{
    Path path = new Path()
    {
        Stroke = Brushes.Black,
        StrokeThickness = 1
    };
    if (points.Length == 0)
        return path;

    PathSegmentCollection pathSegments = new PathSegmentCollection();
    for (int i = 1; i < points.Length; i++)
        pathSegments.Add(new LineSegment(points[i], true));

    path.Data = new PathGeometry()
    {
        Figures = new PathFigureCollection()
        {
            new PathFigure()
            {
                StartPoint = points[0],
                Segments = pathSegments
            }
        }
    };
    return path;
}

然后你可以这样称呼它：

Path myPath = makePath(new Point(10, 50), new Point(200, 70));