internal DotIndexedColor(DotColorScheme scheme, int index)
{
if (scheme.IsIndexed == false)
{
throw new InvalidOperationException("Color scheme is not indexed");
}
Scheme = scheme;
Index = index;
}
public DotColorScheme this[int colorsNum]
{
get
{
if (colorsNum < MinColors || colorsNum > MaxColors)
{
throw new ArgumentOutOfRangeException(nameof(colorsNum));
}
var schemeName = Value + colorsNum;
DotColorScheme scheme;
if (SchemeCache.TryGetValue(schemeName, out scheme))
{
return(scheme);
}
scheme = new DotColorScheme(schemeName, colorsNum);
SchemeCache.Add(schemeName, scheme);
return(scheme);
}
}