从画布上获取多边形的点

用c#实现一个Pixelsense的WPF应用程序。

我很难找到一个多边形放置在屏幕上的特定点，以检测多边形重叠(这是下一阶段)。总的来说，我可以在我的应用程序中有7个多边形，下面是我尝试获得它们的点的代码。

我认为代码将理想地做是开始一个循环，创建一个多边形(形状1)，然后开始第二个循环，创建另一个多边形(形状2)，并获得两个形状点和检查重叠。然后第二个循环将继续检查另一个形状(形状3)是否与形状1重叠，获取其点，以此类推……因此，第一个多边形将与其他6个多边形进行重叠检查，因此是嵌套循环。

然而，当前发生的情况是方法为第一个多边形选择的点，它们也被复制到第二个多边形。因此，它会为两个单独的多边形和循环永远打印出一组重复的点。

我已经被困在这个问题上一段时间了，请帮帮我:)

public void DefiningPolygonArea()
    {
        foreach (var polygonsCollection1 in this.PlayingCanvas.Children)
        {
            Polygon polygon1 = polygonsCollection1 as Polygon;
            if (polygon1 != null)
            {
                foreach (var polygonsCollection2 in this.PlayingCanvas.Children)
                {
                    Polygon polygon2 = polygonsCollection2 as Polygon;
                    if (polygon1 != polygon2 && polygon2 != null)
                    {
                        HelperMethods.PointCollectionsOverlap_Fast(getPoints(polygon1), getPoints(polygon2));
                    }
                }
            }
        }
    }
private List<Point> getPoints(Polygon poly)
    {
        if (poly.Points.Count == 4)
        {
            var transform = poly.TransformToVisual(this.PlayingCanvas);
            Point point1 = transform.Transform(poly.Points[0]);
            Point point2 = transform.Transform(poly.Points[1]);
            Point point3 = transform.Transform(poly.Points[2]);
            Point point4 = transform.Transform(poly.Points[3]);
            area1.Add(point1);
            area1.Add(point2);
            area1.Add(point3);
            area1.Add(point4);
            Console.WriteLine("polygon with 4 points consists of: " + area1[0] + " , " + area1[1] + " , " + area1[2] + " , " + area1[3]);
        }
        else if (poly.Points.Count == 3)
        {
            var transform = poly.TransformToVisual(this.PlayingCanvas);
            Point point1 = transform.Transform(poly.Points[0]);
            Point point2 = transform.Transform(poly.Points[1]);
            Point point3 = transform.Transform(poly.Points[2]);
            area1.Add(point1);
            area1.Add(point2);
            area1.Add(point3);
            Console.WriteLine("polygon with 3 points consists of: " + area1[0] + " , " + area1[1] + " , " + area1[2]);
        }
        return area1;
    }

输出:

4点多边形由:713.345368087522、713.83644226973、550.136522242161、724.044829935686、463.067512500796、641.78273862321、626.276358346157、631.574350957254组成

3点多边形由:713.345368087522、713.83644226973、550.136522242161、724.044829935686、463.067512500796、641.78273862321组成

foreach (var polygon1 in this.PlayingCanvas.Children.OfType<Polygon>())
    foreach (var polygon2 in this.PlayingCanvas.Children.OfType<Polygon>().Where(x => x != polygon1))
            HelperMethods.PointCollectionsOverlap_Fast(getPoints(polygon1), getPoints(polygon2));