public void NoiseTestFractalBrowning()
{
XNAGame game = new XNAGame();
PerlinNoiseGenerater noise;
noise = new PerlinNoiseGenerater();
float factor = 0.02f;
float scale = 40f;
List <Vector3> positions = new List <Vector3>();
List <Color> colors = new List <Color>();
int width = 300;
int height = 300;
float verticesPerMeter = 0.5f;
int verticesX = (int)(width * verticesPerMeter);
int verticesY = (int)(height * verticesPerMeter);
SimpleTerrain terrain;
noise.NumberOfOctaves = 4;
noise.persistance = 0.5f;
for (int i = 0; i < verticesX; i++)
{
for (int j = 0; j < verticesY; j++)
{
positions.Add(new Vector3(i / verticesPerMeter, noise.GetFractalBrowningNoise(i / verticesPerMeter, j / verticesPerMeter, 4, 2.0f, 0.4f, 0.2f) * scale, j / verticesPerMeter));
colors.Add(new Color((byte)(150 * noise.GetPerlineNoise(i, j)), (byte)(100 + 70 * noise.GetPerlineNoise(i + 1, j + 1)), (byte)(140 * noise.GetPerlineNoise(i, j + 2))));
}
}
terrain = new SimpleTerrain(game, positions, colors, verticesX, verticesY);
game.InitializeEvent +=
delegate
{
terrain.CreateRenderData();
};
game.DrawEvent +=
delegate
{
terrain.Render();
};
game.Run();
}
public Array2D <float> GenerateBottomIslandHeightmap(int size)
{
PerlinNoiseGenerater noise;
noise = new PerlinNoiseGenerater();
float factor = 0.1f;
float scale = 10f;
List <Vector3> positions = new List <Vector3>();
List <Color> colors = new List <Color>();
List <Vector3> positionsIsland = new List <Vector3>();
List <Color> colorsIsland = new List <Color>();
List <Vector3> positionsFinal = new List <Vector3>();
List <Color> colorsFinal = new List <Color>();
int width = size;
int height = size;
float lengthFactor = 0.2f;
SimpleTerrain terrain;
SimpleTerrain terrainIsland;
SimpleTerrain terrainFinal;
ProceduralHeigthGenerater gen = new ProceduralHeigthGenerater(8, 0.7f);
float heigestFBM = 0;
float heigestRidge = 0;
float lowestIsland = 0;
var heights = new Array2D <float>(new Point2(width, height));
float[,] heightDataRidge = new float[width, height];
float[,] heightDataFBM = new float[width, height];
float[,] heightDataIsland = new float[width, height];
float[,] heightDataFinal = new float[width, height];
var r = random;
var octaves = new[]
{
//new Vector4(1/2f, 0.5f, (float)r.NextDouble(), (float)r.NextDouble()),
//new Vector4(1/5f, 2, (float)r.NextDouble(), (float)r.NextDouble()),
//new Vector4(1/10f, 5f, (float)r.NextDouble(), (float)r.NextDouble()),
//new Vector4(1f, 1f, (float)r.NextDouble(), (float)r.NextDouble()),
new Vector4(1 / 2f, 1f, (float)r.NextDouble(), (float)r.NextDouble()),
new Vector4(1 / 5f, 4, (float)r.NextDouble(), (float)r.NextDouble()),
new Vector4(1 / 10f, 10f, (float)r.NextDouble(), (float)r.NextDouble()),
};
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
noise.NumberOfOctaves = 1;
//heights[new Point2(i, j)] += noise.RidgedMF(i * lengthFactor, j * lengthFactor, 0.15f, 8, 2f, 0.7f, 0.8f);//noise.CombinedFractalBrowningAndRidgedMF(i * lengthFactor, j * lengthFactor, 8, 4,5f, 0.5f, 2f, 0.8f, 1f);
foreach (var v in octaves)
{
float frequency = v.X;
float oScale = v.Y;
Vector2 offset = new Vector2(v.Z, v.W) * 1000;
heights[new Point2(i, j)] += noise.GetPerlineNoise((i + offset.X) * frequency, (j + offset.Y) * frequency) * oScale;
}
heightDataFBM[i, j] = noise.GetFractalBrowningNoise(i * lengthFactor, j * lengthFactor, 8, 1.2f, 1.9f, 1.2f);
heightDataIsland[i, j] = gen.IslandFactor(i * lengthFactor, j * lengthFactor, new Vector2(width * lengthFactor * 0.5f, height * lengthFactor * 0.5f), width * lengthFactor * 0.42f, width * lengthFactor * 0.4f);//noise.CombinedFractalBrowningAndRidgedMF(i, j, 8, 4, 4, 0.9f, 0.5f, 1.2f, 0.8f)*0.1f+gen.IslandFactor(i, j, new Vector2(width * 0.45f, height * 0.5f),0,width*0.22f)*0.9f ;
if (heigestFBM < heightDataFBM[i, j])
{
heigestFBM = heightDataFBM[i, j];
}
if (heigestRidge < heightDataRidge[i, j])
{
heigestRidge = heightDataRidge[i, j];
}
if (lowestIsland > heightDataIsland[i, j])
{
lowestIsland = heightDataIsland[i, j];
}
}
}
return(heights);
}