public Color GetColor(double value, ColorScaleInterpolation interpolation = ColorScaleInterpolation.HSV)
{
if (interpolation == ColorScaleInterpolation.HSV)
{
return(GetColorHsv(value));
}
if (interpolation == ColorScaleInterpolation.RGB)
{
return(GetColorRgb(value));
}
throw new NotSupportedException(string.Concat("Unsupported interpolation type '", interpolation, "'."));
}
/// <summary>
/// Initializes a new instance of the <see cref="ColorScale" /> class.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="invalidColor">Color of the invalid.</param>
/// <param name="entries">The entries.</param>
/// <param name="interpolation">The interpolation mode.</param>
/// <exception cref="ArgumentException">Error creating color scale: Duplicate color entries (values) are not allowed.</exception>
/// <exception cref="System.ArgumentException">Error creating color scale: Duplicate color entries (values) are not allowed.</exception>
public ColorScale(string name, Color invalidColor, IEnumerable <ColorScaleEntry> entries = null, ColorScaleInterpolation interpolation = ColorScaleInterpolation.HSV)
{
Name = name;
InvalidColor = invalidColor;
Interpolation = interpolation;
Precision = 1;
Entries = entries?.OrderBy(entry => entry.Value).ToArray() ?? new ColorScaleEntry[0];
_OrderedValueList = Entries.Select(entry => entry.Value).ToArray();
if (_OrderedValueList.Distinct().Count() != _OrderedValueList.Length)
{
throw new ArgumentException("Error creating color scale: Duplicate color entries (values) are not allowed."); //Prevents division by zero in color interpolation.
}
_ColorSpans = new ColorSpan[_OrderedValueList.Length - 1];
_HasConstantColors = true;
for (var i = 0; i < _OrderedValueList.Length - 1; i++)
{
_ColorSpans[i] = new ColorSpan(_OrderedValueList[i], _OrderedValueList[i + 1], Entries[i].RightColor, Entries[i + 1].LeftColor);
if (i > 0 && Entries[i - 1].RightColor != Entries[i].LeftColor)
{
_HasConstantColors = false;
}
Precision = Math.Max(Precision, CalculatePrecision(_OrderedValueList[i]));
}
if (_OrderedValueList.Length > 0)
{
MinValue = Entries[0].Value;
MaxValue = Entries[Entries.Length - 1].Value;
}
else
{
MinValue = float.MaxValue;
MaxValue = float.MinValue;
}
}
