public NoiseGenerator(long seed, double persistence, int levels, int[] size, bool smooth, Interpolation interpolation)
{
this.seed = seed;
if (persistence < 0.0 || persistence > 1.0)
{
throw new ArgumentOutOfRangeException(nameof(persistence));
}
this.persistence = persistence;
if (levels <= 0)
{
throw new ArgumentOutOfRangeException(nameof(levels));
}
this.levels = levels;
this.persistences = Enumerable.Range(0, this.levels)
.Select(l => Math.Pow(persistence, l))
.ToArray();
this.scale = this.persistences.Sum();
this.smooth = smooth;
if (size == null)
{
throw new ArgumentNullException(nameof(size));
}
else if (size.Length == 0)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
this.size = Array.ConvertAll(size, s => s);
this.dimensions = this.size.Length;
this.levelSizes = new int[this.levels][];
for (var level = 0; level < this.levels; level++)
{
this.levelSizes[level] = new int[this.dimensions];
for (var i = 0; i < this.dimensions; i++)
{
this.levelSizes[level][i] = this.size[i] * (1 << level);
}
}
this.interpolation = interpolation ?? throw new ArgumentNullException(nameof(interpolation));
this.levelsCache = new SplayTreeDictionary <long[], Array[]>(CacheKeyComparer.Instance);
}
public TiedList(SplayTreeDictionary <TKey, TValue> tree, int version, IList <T> backingList)
{
this.tree = tree ?? throw new ArgumentNullException(nameof(tree));
this.version = version;
this.backingList = backingList ?? throw new ArgumentNullException(nameof(backingList));
}
