Mandelbrot设置输出单点

时间:2013-10-19 00:47:13

标签: c++ mandelbrot

我整天都在反对这一切。我觉得这真的应该有效!无论我做什么来调整它,它输出一个点。任何帮助将非常感谢!

double x_init, y_init;  //These will be the real and imaginary aspects of C 
double x_temp, y_temp;  //We gotta hold values while we update the new x, y since they are based recursively on previous values;
double arg; // This will be our square root test



for (double y = - 1.6; y < 1.6; y += .002)
{
    for (double x = -1.5; x < 0.6; x += .004)
    {
        x_init = x;
        y_init = y;

        int iter = 0;
        arg = 0;
        while(iter < 50 && arg < 2)
        {
            x_temp = x;
            y_temp = y;
            x = (x_temp * x_temp) - (y_temp * y_temp) + x_init;
            y = 2 * x_temp * y_temp + y_init;
            arg = sqrt(x*x + y*y);
            iter++;
        }
        if (iter > 40)
        {
            drawBlack(x_init, y_init);

        }


    }
}

1 个答案:

答案 0 :(得分:0)

有两个问题:

1)您已将最大迭代次数设置为50,但随后使用最大迭代次数40来确定是否绘制黑色。

2)您正在使用等式的x和y坐标进行绘制。您需要保留一个单独的x和y像素坐标,您正在绘制该坐标。