/// <summary>
/// Returns the color in this color range at the specified parameter.
/// </summary>
/// <param name="colorRange"></param>
/// <param name="parameter">A value between 0.0 and 1.0.</param>
/// <returns>A Color.</returns>
public static Color GetColorAtParameter(ColorRange1D colorRange, double parameter = 0.0)
{
// If the supplied index matches one of the indexed colors' indices,
// then just return that color.
var found = colorRange.indexedColors.FirstOrDefault(ci => ci.Parameter == parameter);
if (found != null)
{
return(found.Color);
}
if (colorRange.indexedColors.Count == 1)
{
return(colorRange.indexedColors.First().Color);
}
Color.IndexedColor1D c1, c2;
c1 = colorRange.indexedColors.First();
c2 = colorRange.indexedColors.Last();
// Find the leading and trailing indexed color
// between which we will linearly interpolate.
foreach (var ci in colorRange.indexedColors)
{
if (ci.Parameter > c1.Parameter && ci.Parameter < parameter)
{
c1 = ci;
}
if (ci.Parameter > parameter && ci.Parameter < c2.Parameter)
{
c2 = ci;
}
}
return(Color.Lerp(c1.Color, c2.Color, (parameter - c1.Parameter) / (c2.Parameter - c1.Parameter)));
}
public static Color BuildColorFrom1DRange(List <Color> colors, List <double> parameters, double parameter)
{
var colorRange = ColorRange1D.ByColorsAndParameters(colors, parameters);
return(ColorRange1D.GetColorAtParameter(colorRange, parameter));
}
/// <summary>
/// Returns the color in this color range at the specified parameter.
/// </summary>
/// <param name="colorRange"></param>
/// <param name="parameter">A value between 0.0 and 1.0.</param>
/// <returns>A Color.</returns>
public static Color GetColorAtParameter(ColorRange1D colorRange, double parameter = 0.0)
{
// If the supplied index matches one of the indexed colors' indices,
// then just return that color.
var found = colorRange.indexedColors.FirstOrDefault(ci => ci.Parameter == parameter);
if (found != null)
{
return found.Color;
}
if (colorRange.indexedColors.Count == 1)
{
return colorRange.indexedColors.First().Color;
}
Color.IndexedColor1D c1, c2;
c1 = colorRange.indexedColors.First();
c2 = colorRange.indexedColors.Last();
// Find the leading and trailing indexed color
// between which we will linearly interpolate.
foreach (var ci in colorRange.indexedColors)
{
if (ci.Parameter > c1.Parameter && ci.Parameter < parameter)
{
c1 = ci;
}
if (ci.Parameter > parameter && ci.Parameter < c2.Parameter)
{
c2 = ci;
}
}
return Color.Lerp(c1.Color, c2.Color, (parameter - c1.Parameter) / (c2.Parameter - c1.Parameter));
}