public override void WriteColorMap(int height, string filePath)
{
var width = 2 * height;
if (ColorNoiseMap == null)
{
GenerateColorMap(height);
}
var bitmap = new DirectBitmap(width, height);
var tempMean = Random.Uniform("life temperature mean", FreezingPoint, BoilingPoint);
var tempVariance = Random.Uniform("life temperature variance", 20, 70);
var sinPower = Random.Uniform("sin power", 0, 2);
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
var value = ColorNoiseMap.GetValue(x, y);
var col = OceanColor;
if (!HasOcean || HeightNoiseMap.GetValue(x, y) > OceanLevel)
{
col = ColorScale.Color(value);
}
if (HasLife && HeightNoiseMap.GetValue(x, y) > OceanLevel)
{
var delta = Abs(TemperatureNoiseMap.GetValue(x, y) - tempMean) / tempVariance;
if (delta < 0)
{
delta = 0;
}
if (delta > 1)
{
delta = 1;
}
delta *= (float)Pow(Sin(PI * y / height), sinPower);
col = Interpolate(col, LifeColorScale.Color(value), delta);
}
if (HasAtmosphere && TemperatureNoiseMap.GetValue(x, y) < FreezingPoint * IceFactor)
{
col = IceColor;
}
bitmap.SetPixel(x, y, col);
}
}
bitmap.Save(filePath);
}
private void GenerateTemperatureMap(int height)
{
var width = 2 * height;
if (HeightNoiseMap == null)
{
GenerateHeightMap(height);
}
var builder = new SphereNoiseMapBuilder();
builder.SetDestSize(width, height);
builder.SetBounds(-90, 90, -180, 180);
TemperatureNoiseMap = new NoiseMap();
builder.SourceModule = TemperatureNoiseModule;
builder.DestNoiseMap = TemperatureNoiseMap;
builder.Build();
MinTemperature = 1000000.0f;
MaxTemperature = 0.0f;
var solarHeat = Pow(SurfaceTemperature, 4);
var extraHeat = Pow(GeothermalTemperature, 4) + Pow(GreenhouseTemp, 4);
var coldness = 1 - (float)Random.Uniform("coldness", Pow(extraHeat / (solarHeat + extraHeat), 0.25), 1);
if (HasAtmosphere)
{
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
var heat = extraHeat + solarHeat * 2 * Sin(PI * y / height);
var temperature = (float)Pow(heat, 0.25);
temperature *= 1 - coldness * HeightNoiseMap.GetValue(x, y);
if (temperature < MinTemperature)
{
MinTemperature = temperature;
}
else if (temperature > MaxTemperature)
{
MaxTemperature = temperature;
}
temperature *= 1 + 0.05f * (TemperatureNoiseMap.GetValue(x, y) - 1);
TemperatureNoiseMap.SetValue(x, y, temperature);
}
}
}
}
/// <summary>Writes an equirectangular height map of the planet at the specified path.</summary>
/// <param name="height">The height of the output image, half the width.</param>
/// <param name="filePath">The path of the output file including file extension.</param>
public void WriteHeightMap(int height, string filePath)
{
if (HeightNoiseMap == null)
{
GenerateHeightMap(height);
}
var bitmap = new DirectBitmap(HeightNoiseMap.Width, HeightNoiseMap.Height);
for (var x = 0; x < HeightNoiseMap.Width; x++)
{
for (var y = 0; y < HeightNoiseMap.Height; y++)
{
var col = Interpolate(Color.Black, Color.White, HeightNoiseMap.GetValue(x, y));
bitmap.SetPixel(x, y, col);
}
}
bitmap.Save(filePath);
}
/// <summary>Writes an equirectangular specular map of the planet at the specified path.</summary>
/// <param name="height">The height of the output image, half the width.</param>
/// <param name="filePath">The path of the output file including file extension.</param>
public void WriteSpecMap(int height, string filePath)
{
if (HasOcean)
{
var bitmap = new DirectBitmap(HeightNoiseMap.Width, HeightNoiseMap.Height);
if (HasOcean)
{
for (var x = 0; x < HeightNoiseMap.Width; x++)
{
for (var y = 0; y < HeightNoiseMap.Height; y++)
{
var col = Color.Black;
if (HeightNoiseMap.GetValue(x, y) <= OceanLevel && TemperatureNoiseMap.GetValue(x, y) > FreezingPoint)
{
col = Color.White;
}
bitmap.SetPixel(x, y, col);
}
}
}
bitmap.Save(filePath);
}
}
/// <summary>Writes an equirectangular normal map of the planet at the specified path.</summary>
/// <param name="height">The height of the output image, half the width.</param>
/// <param name="filePath">The path of the output file including file extension.</param>
/// <param name="altMode">Whether to use an alternate normal map format.</param>
public void WriteNormalMap(int height, string filePath, bool altMode = false)
{
var width = 2 * height;
if (HeightNoiseMap == null)
{
GenerateHeightMap(height);
}
var array = new float[width, height];
var bitmap = new DirectBitmap(width, height);
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
var value = HeightNoiseMap.GetValue(x, y);
if (value < OceanLevel)
{
value = 0;
}
else
{
value = (value - OceanLevel) / (1 - OceanLevel);
}
value *= (float)Sin(PI * y / height);
array[x, y] = value;
}
}
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
var r = 127;
var g = 127;
var b = 255;
if (x > 0 && x < width - 1 && y > 0 && y < height - 1)
{
var vx = new Vector3(100f / height, 0, array[x + 1, y] - array[x - 1, y]);
var vy = new Vector3(0, 100f / height, array[x, y + 1] - array[x, y - 1]);
var c = Vector3.Cross(vx, vy);
c /= c.Length();
r = (int)(255 * (1 + c.X) / 2);
g = (int)(255 * (1 - c.Y) / 2);
b = (int)(255 * (1 + c.Z) / 2);
}
if (altMode)
{
var A = r;
var G = (int)(g * A / 255.0);
if (A < 0 || A > 255 || G < 0 || G > 255)
{
bitmap.SetPixel(x, y, Color.FromArgb(127, 255, 127, 255));
}
else
{
bitmap.SetPixel(x, y, Color.FromArgb(A, G, G, G));
}
}
else
{
if (r < 0 || r > 255 || g < 0 || g > 255 || b < 0 || b > 255)
{
bitmap.SetPixel(x, y, Color.FromArgb(127, 127, 255));
}
else
{
bitmap.SetPixel(x, y, Color.FromArgb(r, g, b));
}
}
}
}
bitmap.Save(filePath);
}