/// <summary>
/// Sets the <see cref="D2DBrush" /> instance that defines the fill for each shape falling within the range.
/// </summary>
/// <param name="range"></param>
protected override void SetFillForRange(ColorRange range)
{
if (range == null)
{
throw new ArgumentNullException(nameof(range));
}
if (range.Index < 0 || this.brushes.Count == 0)
{
return;
}
range.Fill = this.brushes[range.Index % this.brushes.Count];
}
/// <summary>
/// Sets the <see cref="D2DBrush" /> instance that defines the fill for each shape falling within the range.
/// </summary>
protected override void SetFillForRange(ColorRange range)
{
if (range == null)
{
throw new ArgumentNullException(nameof(range));
}
double ratio = 1d / (this.rangeCountCache - 1) * range.Index;
double colorRatio = this.to + (ratio * (this.from - this.to));
var hsl = this.hslColor;
hsl.S *= colorRatio;
hsl.L = 1 - ((1 - hsl.L) * colorRatio);
range.Fill = new D2DSolidColorBrush()
{
Color = hsl.ToColor()
};
}
internal static IEnumerable <ColorRange> BuildLinearRanges(ValueRange <double> actualRange, int count, double step)
{
double startValue = actualRange.minimum;
for (int i = 0; i < count; i++)
{
var range = new ColorRange()
{
Min = startValue,
Max = startValue + step,
Index = i
};
if (i == count - 1)
{
range.Max = actualRange.maximum;
}
startValue += step;
yield return(range);
}
}
/// <summary>
/// Provides an extension point for inheritors to perform additional logic when a <see cref="IMapShape"/> is associated with a valid <see cref="ColorRange"/>.
/// </summary>
protected virtual void OnShapeAssociated(IMapShape shape, ColorRange range)
{
}
/// <summary>
/// Sets the <see cref="D2DBrush"/> instance that defines the fill for each shape falling within the range.
/// </summary>
protected virtual void SetFillForRange(ColorRange range)
{
}