/// <summary>
/// Produces an enumerable of classifiers by given extraction.
/// </summary>
/// <param name="model">The model</param>
/// <param name="extractor">The extractor</param>
/// <returns>Dictionary referencing from ID to classifier</returns>
public static Dictionary <Component, Qualifier> ClassifyBy(this SceneModel model, ComponentQualifierDelegate extractor)
{
return(model.Components.ToDictionary(c => c, c => extractor(c)));
}
/// <summary>
/// Produces a cluster lookup by given classifier extraction
/// </summary>
/// <param name="model">The scene</param>
/// <param name="extractor">The extraction delegate</param>
/// <returns>A lookup by classifier</returns>
public static ILookup <Qualifier, Component> ClusterBy(this SceneModel model, ComponentQualifierDelegate extractor)
{
return(model.Components.ToLookup(c => extractor(c)));
}