如何在C ++中绘制函数 [英] How to draw functions in C++

问题描述

我想在C ++中创建函数图表。谁能帮助我开始？假设我想绘制函数y = x（它是通过点（0,0）（1,1）（2,2）.....（20,20）的直线）等等）
我该怎么办呢？ （如果你还建议如何绘制y& x轴，它是更好的）
对不起，但它不是在书上（好的文字建议是欢迎，顺便： - ）C + +）是主要参考游戏图形。
唯一严重的引用我的问题，我能够找到是这样：

I would like to create charts of functions in C++. Can anyone help me in getting started ? Let's suppose I want to draw the function y=x ( it is a straight line passing through the points (0,0) (1,1) (2,2) ..... (20,20) etc. ) How could I do it ? ( If you also suggest how to draw the y & x axes it is even better ) Sorry but it is not on books ( good texts recommendations are welcome, by the way :-) C++ ) and on the net there are references mainly to game graphics. The only serious reference to my problem I was able to find is this: somewhat related question asked in this very forum ( God bless, we have stackoverflow ! )

我会考虑两个选项：

• 你可能需要一个外部库。 OpenGL是一个解决方案，还有 Qt ，这可能更容易学习和更大（和更强大的）。


• 如果您能够输出一个文件并用另一个程序读取，最简单的方法是简单地写一个ASCII文件，是与八度（免费）。

• If you want to do everything in C++, you will probably need an external library. OpenGL is a solution, there is also Qt, which is probably easier to learn and larger (and more powerful).
• If you can afford to output a file and read it with another program, the easiest way is to simply write an ASCII file with the coordinates of the points and plot is with Octave (free).

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