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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)

这篇关于如何知道GraphicsPath是否在C#中包含一个点的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

09-09 18:07