如何知道GraphicsPath是否在C＃中包含一个点 [英] How to know if a GraphicsPath contains a point in C#

问题描述

我正在使用 .NET 绘制图表，我想在用户单击对象时突出显示它们。将图形完全包含在矩形中很容易：

I'm using .NET to draw a diagram, and I want to highlight objects when the user performs a click on them. It is easy when a figure is fully contained in a rectangle:

if (figure.Bounds.Contains(p)) // bounds is a rectangle

但是，如果图形复杂，我不知道如何管理它 GraphicsPath 。

But I don't know how to manage it if the figure is a complex GraphicsPath.

我为以下对象定义了以下 GraphicsPath ：图（绿色圆圈）。

I have defined the following GraphicsPath for the figure (the green circle).

我想在用户单击该图时突出显示该图。 我想知道 GraphicsPath 中是否包含 Point 。

I want to highlight the figure when the user click on it. I would like to know if a Point is contained in that GraphicsPath.

有什么想法吗？预先感谢。

Any ideas? Thanks in advance.

推荐答案

我不知道 DrawingPath （您可能是指图形。 DrawPath），但 GraphicsPath 具有 IsVisible 方法来检查路径中是否有点。

I don't know a DrawingPath (you mean probably; graphics.DrawPath) but a GraphicsPath has the IsVisible method to check if a point is in the path.

bool isInPath = graphicsObj.IsVisible(point)

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