public void GenerateHeightmap(Random random)
{
int mapWidth = Settings.MapWidth;
int mapHeight = Settings.MapHeight;
Altitude = new double[mapWidth, mapHeight];
double[,] heightmap = new DiamondSquare(random, mapWidth, mapHeight, 1, Settings.Roughness, false, false).GenerateHeightmap();
double heightmapWidth = heightmap.GetUpperBound(0);
double heightmapDepth = heightmap.GetUpperBound(1);
double widthRatio = heightmapWidth / mapWidth;
double heightRatio = heightmapDepth / mapHeight;
int middleX = mapWidth / 2;
int middleY = mapHeight / 2;
int edgeSizeX = mapWidth / 4;
int edgeSizeY = mapHeight / 4;
int smoothThresholdX = middleX - edgeSizeX;
int smoothThresholdY = middleY - edgeSizeY;
double heightScale = Settings.HeightScale;
double floorHeight = Settings.BaseHeight - heightScale;
for (int x = 0; x < mapWidth; x++)
{
for (int y = 0; y < mapHeight; y++)
{
double multiplier = 1.0;
if (Settings.OceanBorder)
{
int dx = Math.Abs(middleX - x);
int dy = Math.Abs(middleY - y);
if (dx >= smoothThresholdX)
{
multiplier *= 1 - (dx - smoothThresholdX) / (double)(edgeSizeX);
}
if (dy >= smoothThresholdY)
{
multiplier *= 1 - (dy - smoothThresholdY) / (double)(edgeSizeY);
}
}
if (Settings.Noise > 0)
{
multiplier *= random.NextDouble(1 - Settings.Noise, 1);
}
int x2 = (int)Math.Round((x) * widthRatio);
int y2 = (int)Math.Round((y) * heightRatio);
Altitude[x, y] = floorHeight + (heightmap[x2, y2] * heightScale + heightScale) * multiplier;
}
}
}
public void Generate(Random rng)
{
Altitude = new double[SizeX, SizeY];
double[,] heightmap = new DiamondSquare(rng, SizeX, SizeY, 1, Roughness, WrapX, WrapY).GenerateHeightmap();
double heightmapWidth = heightmap.GetUpperBound(0);
double heightmapDepth = heightmap.GetUpperBound(1);
double widthRatio = heightmapWidth / SizeX;
double heightRatio = heightmapDepth / SizeY;
int middleX = SizeX / 2;
int middleY = SizeY / 2;
int edgeSizeX = SizeX / 4;
int edgeSizeY = SizeY / 4;
int smoothThresholdX = middleX - edgeSizeX;
int smoothThresholdY = middleY - edgeSizeY;
for (int x = 0; x < SizeX; x++)
{
for (int y = 0; y < SizeY; y++)
{
double multiplier = 1.0;
if (SmoothEdges)
{
int dx = Math.Abs(middleX - x);
int dy = Math.Abs(middleY - y);
if (dx >= smoothThresholdX)
{
multiplier *= 1 - (dx - smoothThresholdX) / (double)(edgeSizeX);
}
if (dy >= smoothThresholdY)
{
multiplier *= 1 - (dy - smoothThresholdY) / (double)(edgeSizeY);
}
}
if (Noise > 0)
{
multiplier *= rng.NextDouble(1 - Noise, 1);
}
int x2 = (int)Math.Round((x) * widthRatio);
int y2 = (int)Math.Round((y) * heightRatio);
Altitude[x, y] = FloorHeight + (heightmap[x2, y2] * AltitudeScale + AltitudeScale) * multiplier;
}
}
}