public float GetTemperature(Index3 blockIndex)
{
int equator = (Planet.Size.Y * Chunk.CHUNKSIZE_Y) / 2;
float equatorTemperature = 40f;
float poleTemperature = -20f;
float tempFluctuation = tempFluctuationGenerator.GetTileableNoise2D(blockIndex.X, blockIndex.Y, Planet.Size.X * Chunk.CHUNKSIZE_X, Planet.Size.Y * Chunk.CHUNKSIZE_Y) * 5f;
float temperatureDifference = poleTemperature - equatorTemperature;
float temperatureDecreasePerBlock = 0.1f;
float distance = Math.Abs(blockIndex.Y - equator);
float temperature = tempFluctuation + equatorTemperature + temperatureDifference * (float)Math.Sin((Math.PI / 2) * distance / equator); //equatorTemperature + distance * temperatureDifference / equator;
float height = (float)(blockIndex.Z - planet.BiomeGenerator.SeaLevel) / (Planet.Size.Z * Chunk.CHUNKSIZE_Z - planet.BiomeGenerator.SeaLevel);
height = Math.Max(height, 0);
height = height * height;
return(temperature - height * temperatureDecreasePerBlock);
}