public double Value(ref Vector3d pt) => ToolApplications.GetAt(_coll, _collIdx).Value(ref pt);
public AxisAlignedBox3d Bounds() => ToolApplications.GetAt(_coll, _collIdx).Bounds();
public double Value(ref Vector3d pt) => ToolApplications.GetAt(_coll, _collIdx).Value(ref pt);
public AxisAlignedBox3d Bounds() => ToolApplications.GetAt(_coll, _collIdx).Bounds();