private static Func <IGeometryEntity, bool, DSGeometry> GetGeomConstructor(IGeometryEntity host)
{
Type type = host.GetType();
Type[] interfaces = type.GetInterfaces();
for (int i = interfaces.Length - 1; i >= 0; --i)
{
Func <IGeometryEntity, bool, DSGeometry> constructor;
if (mGeometryContructors.TryGetValue(interfaces[i], out constructor))
{
return(constructor);
}
}
return(null);
}
internal static DSGeometry ToGeometry(IGeometryEntity host, bool persist = false, DSGeometry context = null)
{
if (host == null)
{
return(null);
}
if (host.Owner != null)
{
return(host.Owner as DSGeometry);
}
Func <IGeometryEntity, bool, DSGeometry> constructor = GetGeomConstructor(host);
if (null == constructor)
{
throw new InvalidOperationException(string.Format("Can't locate DSGeometry constructor for type: {0}.", host.GetType()));
}
DSGeometry geom = constructor(host, persist);
if (null != context)
{
geom.Context = context;
}
return(geom);
}