2

我想出了这样的事情：

float MinRe = -2.0f; // real
float MaxRe = 1.0f;
float MinIm = -1.0f; // imaginary
float MaxIm = MinIm + (MaxRe - MinRe) * WindowData.Height / WindowData.Width;

float Re_factor = (MaxRe - MinRe) / (WindowData.Width - 1);
float Im_factor = (MaxIm - MinIm) / (WindowData.Height - 1);

int MaxIterations = 50;
int iter=0;

for (int y = 0; y < WindowData.Height; ++y)
{
    double c_im = MaxIm - y * Im_factor; // complex imaginary
    for (int x = 0; x < WindowData.Width; ++x)
    {
        double c_re = MinRe + x * Re_factor; // complex real

        // calculate mandelbrot set
        double Z_re = c_re, Z_im = c_im; // Set Z = c
        bool isInside = true;

        for (iter=0; iter < MaxIterations; ++iter)
        {
            double Z_re2 = Z_re * Z_re, Z_im2 = Z_im * Z_im;
            if (Z_re2 + Z_im2 > 4)
            {
                isInside = false;
                break;
            }
            Z_im = 2 * Z_re * Z_im + c_im;
            Z_re = Z_re2 - Z_im2 + c_re;
        }

        if(isInside) 
        {
            GL.Color3(0, 0, 0);
            GL.Vertex2(x, y);
        }
    }
}

我尝试过几种方法，但大多数时候都以单色结束，或者整个屏幕都以相同的颜色结束。

如何正确设置颜色？

4

4 回答 4

1

我是这样做的：查看 Source Forge 存储库以获取源代码。

http://craicpropagation.blogspot.com/2011/03/mandelbrot-set.html

于 2012-01-21T14:27:50.927 回答
1

当我尝试这个时，我只是将外部颜色设置为 RGB (value, value, 1)，其中 value 是（用你的说法）的第四个根(iter / MaxIterations)。从白色到蓝色的渐变效果非常好。不过，它不像 duffymo 那样明亮，但没有“条纹”效果。

于 2012-01-21T17:21:36.727 回答
0

I found empirically that if you use something like that: color(R,G,B) where R,G,B takes values from 0 to 255.

Then this function gives a really good looking result. f(x,f,p) = 255*(cos(sqrt(x)*f + p))^2 where x denotes the current iteration, f the frequency and p the phase.

And then apply the function for each color argument with a phase difference of 120:

color(f(iter,1,0),f(iter,1,120),f(iter,1,240)

于 2017-05-21T01:15:24.303 回答
-1

尝试显示您的计算结果。检查您的着色功能需要什么输入

也可以看看

http://en.wikibooks.org/wiki/Fractals/Iterations_in_the_complex_plane/Mandelbrot_set

高温高压

亚当

于 2012-10-21T07:04:10.360 回答