/// <summary>
/// Interpolates the specified colors to a palette of the specified size.
/// </summary>
/// <param name="paletteSize">
/// The size of the palette.
/// </param>
/// <param name="colors">
/// The colors.
/// </param>
/// <returns>
/// A palette.
/// </returns>
public static OxyPalette Interpolate(int paletteSize, params OxyColor[] colors)
{
var palette = new OxyColor[paletteSize];
for (int i = 0; i < paletteSize; i++)
{
double y = (double)i / (paletteSize - 1);
double x = y * (colors.Length - 1);
int i0 = (int)x;
int i1 = i0 + 1 < colors.Length ? i0 + 1 : i0;
palette[i] = OxyColor.Interpolate(colors[i0], colors[i1], x - i0);
}
return(new OxyPalette(palette));
}
/// <summary>
/// Interpolates the specified colors to a palette of the specified size.
/// </summary>
/// <param name="paletteSize">The size of the palette.</param>
/// <param name="colors">The colors.</param>
/// <returns>A palette.</returns>
public static OxyPalette Interpolate(int paletteSize, params OxyColor[] colors)
{
if (colors == null || colors.Length == 0 || paletteSize < 1)
{
// There is no color to interpolate or no color required.
return(new OxyPalette(new OxyColor[0]));
}
var palette = new OxyColor[paletteSize];
double incrementStepSize = (paletteSize == 1) ? 0 : (1.0d / (paletteSize - 1));
for (int i = 0; i < paletteSize; i++)
{
double y = i * incrementStepSize;
double x = y * (colors.Length - 1);
int i0 = (int)x;
int i1 = i0 + 1 < colors.Length ? i0 + 1 : i0;
palette[i] = OxyColor.Interpolate(colors[i0], colors[i1], x - i0);
}
return(new OxyPalette(palette));
}
