/// <summary>
/// Initializes a new instance of the <see cref="RandomColourStyle" /> class.
/// </summary>
/// <param name="from">The first colour to interpolate from.</param>
/// <param name="to">The second colour to interpolate to.</param>
/// <param name="position">The position.</param>
public RandomColourStyle(Colour @from, Colour to, Vector2 position = default(Vector2))
{
From = @from;
To = to;
Position = position;
float x = (float)Math.Round(position.X, 3);
float y = (float)Math.Round(position.Y, 3);
float rand = TileRandom.Random(From.ToArgb() + to.ToArgb(), x, y);
PositionColour = Colour.Interpolate(From, To, rand);
}
/// <summary>
/// Gets the style for the given tile.
/// </summary>
/// <param name="tile">The tile.</param>
/// <param name="styles">The styles to choose from.</param>
/// <param name="state">The style state associated with the tile.</param>
/// <returns></returns>
protected override IStyle GetStyle(TileBase tile, IStyle[] styles, ref object state)
{
Debug.Assert(tile != null, "tile != null");
Debug.Assert(styles != null, "styles != null");
if (styles.Length < 1)
{
return(null);
}
Vector2 coords = tile.Centroid.Round(3);
float random = TileRandom.Random(Seed, coords.X, coords.Y);
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (random == 1)
{
return(styles[styles.Length - 1]);
}
return(styles[(int)(random * styles.Length)]);
}
/// <summary>
/// Gets the style for the given tile.
/// </summary>
/// <param name="tile">The tile.</param>
/// <param name="styles">The styles to choose from.</param>
/// <param name="state">The style state associated with the tile.</param>
/// <returns></returns>
protected override IStyle GetStyle(TileBase tile, IStyle[] styles, ref object state)
{
IStyle[] unusedStyles = styles.Except(tile.AdjacentTiles.Values.Select(t => t.Style)).ToArray();
if (unusedStyles.Length == 0)
{
return(base.GetStyle(tile, styles, ref state));
}
if (unusedStyles.Length == 1)
{
Vector2 coords = tile.Centroid.Round(3);
float random = TileRandom.Random(Seed, coords.X, coords.Y);
return(random > (1f / styles.Length)
? unusedStyles[0]
: base.GetStyle(tile, styles, ref state));
}
return(base.GetStyle(tile, unusedStyles, ref state));
}