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| using System;
public class PerlinNoise
{
private static int[] permutation = {
151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225,
140, 36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148,
247, 120, 234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32,
57, 177, 33, 88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175,
74, 165, 71, 134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122,
60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54,
65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169,
200, 196, 135, 130, 116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64,
52, 217, 226, 250, 124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212,
207, 206, 59, 227, 47, 16, 58, 17, 182, 189, 28, 42, 223, 183, 170, 213,
119, 248, 152, 2, 44, 154, 163, 70, 221, 153, 101, 155, 167, 43, 172, 9,
129, 22, 39, 253, 19, 98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104,
218, 246, 97, 228, 251, 34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241,
81, 51, 145, 235, 249, 14, 239, 107, 49, 192, 214, 31, 181, 199, 106, 157,
184, 84, 204, 176, 115, 121, 50, 45, 127, 4, 150, 254, 138, 236, 205, 93,
222, 114, 67, 29, 24, 72, 243, 141, 128, 195, 78, 66, 215, 61, 156, 180 };
private static int[] p;
static PerlinNoise()
{
p = new int[512];
for (int i = 0; i < 512; i++)
{
p[i] = permutation[i % 256];
}
}
public static double Noise(double x, double y)
{
int X = (int)Math.Floor(x) & 255;
int Y = (int)Math.Floor(y) & 255;
x -= Math.Floor(x);
y -= Math.Floor(y);
double u = Fade(x);
double v = Fade(y);
int A = p[X] + Y;
int B = p[X + 1] + Y;
return Lerp(v,
Lerp(u,
Grad(p[A], x , y),
Grad(p[B], x - 1 , y)),
Lerp(u,
Grad(p[A + 1], x , y - 1),
Grad(p[B + 1], x - 1 , y - 1)));
}
private static double Fade(double t)
{
return t * t * t * (t * (t * 6 - 15) + 10);
}
private static double Lerp(double t , double a , double b)
{
return a + t * (b - a);
}
private static double Grad(int hash , double x , double y)
{
int h = hash & 15;
double u = h < 8 ? x : y;
double v = h < 4 ? y : h == 12 || h == 14 ? x : 0;
return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v);
}
public static double OctaveNoise(double x, double y)
{
// https://libnoise.sourceforge.net/tutorials/tutorial4.html
int octaves = 6; // Nombre d'octaves pour combiner les bruits de Perlin
double frequency = 1;
double lacunarity = 2.0; // Facteur d'augmentation de la fréquence entre les octaves
double persistence = 0.25; // Facteur de diminution de l'amplitude entre les octaves
double total = 0;
double amplitude = 1;
double maxValue = 0; // Used for normalizing result to [0,1]
for (int i = 0; i < octaves; i++)
{
total += Noise(x * frequency , y * frequency) * amplitude;
maxValue += amplitude;
amplitude *= persistence;
frequency *= lacunarity;
}
return total / maxValue;
}
}
class Program
{
static void Main(string[] args)
{
int width = 100; // Remplacez par la largeur souhaitée de votre carte
int height = 50; // Remplacez par la hauteur souhaitée de votre carte
double[,] elevation = new double[height, width];
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
double nx = (double)x / width - 0.5;
double ny = (double)y / height - 0.5;
elevation[y, x] = PerlinNoise.OctaveNoise(nx, ny);
//Console.Write(elevation[y, x]+" ");
}
}
//AnalyzeElevation(elevation);
DisplayMap(elevation);
// Maintenant, le tableau "elevation" contient les valeurs d'élévation générées à l'aide du bruit de Perlin avec prise en compte des octaves
// Vous pouvez utiliser ces valeurs pour générer votre terrain ou votre carte selon les besoins
}
/*
static void AnalyzeElevation(double[,] elevation)
{
double min = double.MaxValue;
double max = double.MinValue;
// Trouver les valeurs min et max
for (int y = 0; y < elevation.GetLength(0); y++)
{
for (int x = 0; x < elevation.GetLength(1); x++)
{
if (elevation[y, x] < min) min = elevation[y, x];
if (elevation[y, x] > max) max = elevation[y, x];
}
}
// Initialiser les compteurs pour chaque intervalle
int intervals = (int)((max - min) / 0.01) + 1;
int[] counters = new int[intervals];
// Compter les valeurs dans chaque intervalle
for (int y = 0; y < elevation.GetLength(0); y++)
{
for (int x = 0; x < elevation.GetLength(1); x++)
{
int index = (int)((elevation[y, x] - min) / 0.01);
counters[index]++;
}
}
// Afficher les résultats
for (int i = 0; i < intervals; i++)
{
double intervalStart = min + i * 0.01;
double intervalEnd = intervalStart + 0.01;
Console.WriteLine($"Interval [{intervalStart:F2}, {intervalEnd:F2}): {counters[i]}");
}
}*/
static void DisplayMap(double[,] map)
{
int darkBlueCount = 0;
int blueCount = 0;
int yellowCount = 0;
int greenCount = 0;
int darkGreenCount = 0;
int darkYellowCount = 0;
int darkRedCount = 0;
int whiteCount = 0;
for (int y = 0; y < map.GetLength(0); y++)
{
for (int x = 0; x < map.GetLength(1); x++)
{
double value = map[y, x];
if (value < -0.1)
{
Console.BackgroundColor = ConsoleColor.Cyan;
Console.Write(" ");
Console.ResetColor();
darkBlueCount++;
}
else if (value < -0.03)
{
Console.BackgroundColor = ConsoleColor.Blue;
Console.Write(" ");
Console.ResetColor();
blueCount++;
}
else if (value < 0)
{
Console.BackgroundColor = ConsoleColor.Yellow;
Console.Write(" ");
Console.ResetColor();
yellowCount++;
}
else if (value < 0.03)
{
Console.BackgroundColor = ConsoleColor.Green;
Console.Write(" ");
Console.ResetColor();
greenCount++;
}
else if (value < 0.09)
{
Console.BackgroundColor = ConsoleColor.Green;
Console.ForegroundColor = ConsoleColor.White;
Console.Write("O");
Console.ResetColor();
darkGreenCount++;
}
else if (value < 0.17)
{
Console.BackgroundColor = ConsoleColor.Red;
Console.Write(" ");
Console.ResetColor();
darkYellowCount++;
}
else if (value < 0.22)
{
Console.BackgroundColor = ConsoleColor.Magenta;
Console.Write(" ");
Console.ResetColor();
darkRedCount++;
}
else
{
Console.BackgroundColor = ConsoleColor.White;
Console.Write(" ");
Console.ResetColor();
whiteCount++;
}
}
Console.ResetColor();
Console.WriteLine();
}
// Afficher les compteurs
Console.WriteLine("DarkBlue Count: " + darkBlueCount);
Console.WriteLine("Blue Count: " + blueCount);
Console.WriteLine("Yellow Count: " + yellowCount);
Console.WriteLine("Green Count: " + greenCount);
Console.WriteLine("DarkGreen Count: " + darkGreenCount);
Console.WriteLine("DarkYellow Count: " + darkYellowCount);
Console.WriteLine("DarkRed Count: " + darkRedCount);
Console.WriteLine("DarkWhiteCount Count: " + whiteCount);
}
} |
Perlin Noise en C#
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