我尝试制作这个Mandelbrot分形生成器,但是当我运行它时,我得到一个像圆圈的输出。 不确定为什么会发生这种情况。我认为我的着色可能有问题,但即使如此,形状也是不正确的。
public static Bitmap Generate(
int width,
int height,
double realMin,
double realMax,
double imaginaryMin,
double imaginaryMax,
int maxIterations,
int bound)
{
var bitmap = new FastBitmap(width, height);
var planeWidth = Math.Abs(realMin) + Math.Abs(realMax); // Total width of the plane.
var planeHeight = Math.Abs(imaginaryMin) + Math.Abs(imaginaryMax); // Total height of the plane.
var realStep = planeWidth / width; // Amount to step by on the real axis per pixel.
var imaginaryStep = planeHeight / height; // Amount to step by on the imaginary axis per pixel.
var realScaling = width / planeWidth;
var imaginaryScaling = height / planeHeight;
var boundSquared = bound ^ 2;
for (var real = realMin; real <= realMax; real += realStep) // Loop through the real axis.
{
for (var imaginary = imaginaryMin; imaginary <= imaginaryMax; imaginary += imaginaryStep) // Loop through the imaginary axis.
{
var z = Complex.Zero;
var c = new Complex(real, imaginary);
var iterations = 0;
for (; iterations < maxIterations; iterations++)
{
z = z * z + c;
if (z.Real * z.Real + z.Imaginary * z.Imaginary > boundSquared)
{
break;
}
}
if (iterations == maxIterations)
{
bitmap.SetPixel(
(int)((real + Math.Abs(realMin)) * realScaling),
(int)((imaginary + Math.Abs(imaginaryMin)) * imaginaryScaling),
Color.Black);
}
else
{
var nsmooth = iterations + 1 - Math.Log(Math.Log(Complex.Abs(z))) / Math.Log(2);
var color = MathHelper.HsvToRgb(0.95f + 10 * nsmooth, 0.6, 1.0);
bitmap.SetPixel(
(int)((real + Math.Abs(realMin)) * realScaling),
(int)((imaginary + Math.Abs(imaginaryMin)) * imaginaryScaling),
color);
}
}
}
return bitmap.Bitmap;
}
答案 0 :(得分:3)
这是一个错误:
var boundSquared = bound ^ 2;
这应该是:
var boundSquared = bound * bound;
^
运算符表示xor
。