如何在C＃中减去两个形状并获得新形状的结果点？ [英] How can I subtract two shapes and get resulting points of the new shape in C#?

问题描述

我有两个2D形状的（x，y）点，可能是任何类型的多边形，但大多数是矩形。小矩形位于大矩形内部，并始终与其圆周相切。我想（以编程方式）减去它们并获得新多边形的结果（x，y）点（但不在屏幕上）。



任何人都可以提供任何有关我如何实现这一目标的线索吗？



我有什么尝试过：



我试图使用System.Windows.Media.Geometry.Combine方法，但老实说我不明白它是如何工作的在我的情况下。

I have (x,y) points of two 2D shapes, which might be any type polygon but mostly rectangles. The small rectangle is inside the big one and always tangent to its circumference. I would like to subtract them (programmatically) and get resulting (x,y) points of the new polygon (but not on screen).

Can anyone give any clues on how I might accomplish this?

What I have tried:

I tried to use the System.Windows.Media.Geometry.Combine method, but to be honest I didn't understand how it works in my case.

推荐答案

将你的点转换为一个区域（最简单的方法是通过GraphicsPath或Rectangle）你可以使用各种方法获得一个新的形状：

地区类（System.Drawing）| Microsoft Docs [ ^ ]

它包括有用的方法，如Intersect，Union和Exclude。

Convert your Points to a Region (easiest way is via a GraphicsPath or a Rectangle) and you can use the various methods to get a new "shape":
Region Class (System.Drawing) | Microsoft Docs[^]
It includes useful methods like Intersect, Union, and Exclude.

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