/// <summary>
/// Takes the existing map of the planet and creates a climate
/// map for the planet.
/// </summary>
public void GenerateClimate()
{
// Watt / m^2 average
// TODO make dynamic based on star(s) and distance of planet.
var fullSun = 1000;
// TODO, parameterize this to make it available.
var airZones = 6;
// Use the Planet seed, but offset by 1 to get a different map.
var noise = new FastNoise(Seed + 1);
var secNoise = new FastNoise(Seed + 2);
// setup SolarMap for heat application. TODO, add back in later.
#region SolarMapAndPrevailingWind
/*
* for (int row = 0; row < Height; ++row)
* {
* // The amount that hits is relative to the height with equator
* // getting full and poles getting almost none.
* var correctedSun = (int)(Math.Sin(row / Height * Math.PI) * fullSun);
* // just in case, ensure only G and B is effected.
* correctedSun = correctedSun & 0x0000FFFF;
*
* // we can also generate prevailing winds this way.
* // we default to 6 cells the 2 at the center point equator wise and NE to SW
* // TODO parameterize this.
* var zone = (int)(row / Height * airZones);
* int prevailingWind = 0;
*
* // 0 NW, 2 W, 4 SW, 6 SE, 8 E, 10 NE
* if (zone < airZones / 2)
* { // north hemisphere.
* if (zone % 2 == 1) // if odd
* {// 2 hex/day SW
* prevailingWind = GetDirection("SW", false) + ToSpeed(2);
* }
* else
* {// 2 hex/day NE
* prevailingWind = GetDirection("NE", false) + ToSpeed(2);
* }
* }
* else // if above half
* {// Southern Hemisphere
* if (zone % 2 == 1)
* {// 2 hex/day NW
* prevailingWind = GetDirection("NW", false) + ToSpeed(2);
* }
* else
* {// 2 hex/day SE
* prevailingWind = GetDirection("SE", false) + ToSpeed(2);
* }
* }
*
* for (int col = 0; col < Width; ++col)
* {
* // add existing albedo to corrected sun, then set.
* var val = SolarMap.GetHexValue(col, row) + correctedSun;
* SolarMap.SetPixelArgb(col, row, val);
* // also add prevailing winds to the green channel.
*
* ClimateEx.SetHexGreen(col, row, prevailingWind);
* }
* }*/
#endregion SolarMapAndPrevailingWind
int scale = 1;
// TODO create real calculation for environment
// For a shortcut, just make a selection of high and low tempurature selections.
foreach (var pixel in Terrain)
{
// select random value between 0 and 255 for the tempurature
// restricted further to 128 +/- 64
var tempurature = (int)(255 * (1 + CylinderSample(pixel.Coord.x, pixel.Coord.y, noise) / 4));
Climate.SetHexBlue(pixel.Coord, tempurature);
// set humidity between 0 and 255.
var hum = (int)(255 * (1 + CylinderSample(pixel.Coord.x, pixel.Coord.y, secNoise)) / 2);
Climate.SetHexGreen(pixel.Coord, hum);
// set rainfall equal to humidity for now
Climate.SetHexRed(pixel.Coord, hum);
}
}