public MainForm()
{
InitializeComponent();
var random = new Random();
var bitmap = new Bitmap(PictureBox.ClientSize.Width, PictureBox.ClientSize.Height);
var green = Color.Green;
var blue = Color.Blue;
var yellow = Color.Yellow;
for (var y = 0; y < PictureBox.ClientSize.Height; y++)
{
for (var x = 0; x < PictureBox.ClientSize.Width; x++)
{
//var randomNumber = random.Next (0, 256);
//var color = Color.FromArgb (randomNumber, randomNumber, randomNumber);
var f = 10.0;
var a = 2.0;
var offsetX = 0;
var offsetY = 0;
var noise = 0.0;
for (int i = 0; i < 4; i++)
{
double xx = (double)x / PictureBox.ClientSize.Width * f + offsetX;
double yy = (double)y / PictureBox.ClientSize.Height * f + offsetY;
var noiseValue = PerlinNoise.CalculateNoise(xx, yy);
noise += noiseValue * a;
a *= 0.5;
f *= 2;
}
if (noise < -1)
{
noise = -1;
}
if (noise > 1)
{
noise = 1;
}
var convertedValue = (int)(((noise + 1) / 2) * 255);
//Debug.WriteLine ($"{x} {y} {xx} {yy} {noiseValue} {convertedValue}");
var color = Color.FromArgb(0, convertedValue, 0);
//if (convertedValue < 30)
// color = blue;
//else if (convertedValue < 50)
// color = yellow;
//else
// color = green;
bitmap.SetPixel(x, y, color);
}
}
PictureBox.Image = bitmap;
//var vvv = PerlinNoise.m_permutationTwice;
//foreach(var v in vvv) {
// Debug.WriteLine (v);
//}
}