java - 简单来说，Graphics.setXORMode(Color) 的作用是什么？

Question

这是我读到的有关它的内容，但无法确切理解它的作用:

One way to implement rubber-banding is to draw in XOR mode. You set XOR mode by calling the setXORMode() method for a graphics context and passing a color to it — usually the background color. In this mode the pixels are not written directly to the screen. The color in which you are drawing is combined with the color of the pixel currently displayed together with a third color that you specify, by exclusive ORing them together, and the resultant pixel color is written to the screen. The third color is usually set to be the background color, so the color of the pixel that is written is the result of the following operation:

resultant_Color = foreground_color^background_color^current_color

我知道 XORing 是如何工作的，但不知道上面这段话是什么意思。请帮我解释一下

Answer 1

它接受一种颜色并应用一个 XOR 掩码，就像常规的 XOR 将位掩码一样，除了它是在 RGB 颜色上，所以如果它覆盖具有相同值的颜色或如果值不同，则颜色 RGB 和颜色低于其 RGB 的反转。

只需编写一些代码并尝试一下，就会立即发现会发生什么。