public CachedColorMap(ColorRamp ramp, StretchBase stretch, int desiredDestinationBins)
{
if (stretch == null)
{
throw new ArgumentNullException("stretch");
}
m_ramp = ramp;
m_map = new IntervalMap(stretch, desiredDestinationBins, false);
// allow overflow
m_bins = new int[m_map.Count + 1];
foreach (var interval in m_map.GetIntervals())
{
m_bins[interval.Index] = m_ramp.GetColor(interval.StretchRatio).ToArgb();
}
// overflow
m_bins[m_bins.Length - 1] = m_bins[m_bins.Length - 2];
}
/// <summary>
/// Loads the map.
/// </summary>
/// <param name="type">The type.</param>
/// <returns></returns>
public static ColorRamp LoadMap(Type type)
{
ColorRamp map = null;
if (c_maps.ContainsKey(type))
{
map = c_maps[type];
}
else if (typeof(ColorRamp).IsAssignableFrom(type))
{
try
{
map = Activator.CreateInstance(type) as ColorRamp;
}
catch { }
if (map != null)
{
c_maps.Add(type, map);
}
}
return(map);
}
