Is there a .NET equivalent for acdbUcsMatrix?

[jprisbe]

Is there a .NET equivalent for acdbUcsMatrix?

[Alexander.Rivilis]

Editor.CurrentUserCoordinateSystem for active document. For other document (database) you can P/Invoke acdbUcsMatrix or calculate ucs matrix from origin, xdir and ydir:

public static Matrix3d getUcsMatrix (Database db)
{
    Point3d toOrigin;
    Vector3d toXAxis, toYAxis, toZAxis;

    toOrigin = db.Ucsorg;
    toXAxis = db.Ucsxdir;
    toYAxis = db.Ucsydir;
    toZAxis = toXAxis.CrossProduct(toYAxis);

    return Matrix3d.AlignCoordinateSystem(
          Point3d.Origin, Vector3d.XAxis, Vector3d.YAxis, Vector3d.ZAxis, 
          toOrigin, toXAxis, toYAxis, toZAxis).Inverse(); 
}

[jprisbe]

Thanks.