异或绘图在C＃ [英] XOR Drawing in C#

问题描述

我是一个努力学习C＃.NET

I am a trying to learn C# .Net.

我在VB编写的小（爱好）模拟时钟应用，较早前（编辑：VB6中，要准确），我想我会在C＃.NET重写，因为我的学习的过程。

I had written small (hobby) Analog Clock application in VB sometime ago(edit: VB6, to be precise), and I thought I will rewrite in C#.NET, as part of my learning process.

在VB应用程序的一部分，我画的在XOR Drawmode时钟的手，让我不得不的移动的秒针，我不得不重新绘制它在以前的位置，然后绘制当前的位置 - 我不必刷新整个表格。我所做的只是

In the VB application, I drew the hands of the clock in XOR Drawmode, so that I have to move the second hand, I just had to redraw it in the previous position and then draw the current position - I need not refresh the whole Form. All I did was

Me.DrawMode = vbNotXorPen

然后

Me.Line...

一个VB窗体

这是在C＃中我没有找到一个相当于异或笔绘图模式。

In C# I don't find an equivalent Xor Pen Draw mode.

我发现

ControlPaint.DrawReversibleLine

地方上了网，但我不知道是否 ControlPaint 是为这样的目的（我不明白什么基础坐标系 ControlPaint 的借鉴）

somewhere on the net, but I am not sure whether ControlPaint is meant for such purposes (and I don't understand based on what co-ordinate system ControlPaint is drawing)

有一个相当于在异或C＃.NET在画什么？
或是否有更好的方法做我在做什么（具有最佳性能）

Is there an equivalent to XOR drawing in C#.NET? Or is there a better way to do what I am doing (with the best performance)

（VB和C＃是我的爱好，所以随意纠正我只要我错了）

(Both VB and C# are my hobbies. So feel free to correct me wherever I am wrong)

推荐答案

恕我直言，直至及除非你是针对一些非常慢的电脑，你不需要通过使用XOR技术来优化性能。

IMHO, until and unless you are targeting some really slow computers, you don't need to optimize performance by using XOR technique.

因为你只有一次在第二个被绘制秒针，时钟的一个完整的重绘会好得多。另外，如果直接绘制秒针会看好了，使用平滑模式设置为反别名一个更简洁的外观。

Since you'd be drawing the second hand only once in a second, a complete redraw of the clock would be much better. Also, the second hand will "look" good if drawn directly, and use smoothing mode set to Anti alias for a more cleaner look.

要优化性能，您可以创建那么对于时钟的bmp每一分钟，在其上绘制秒针。

To optimize performance, you can create a bmp for clock every one minute and then draw the second hand upon it.

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