How to retrieve column cross section angle to BasisX or BasisY

[Anonymous]

I'm trying to place a family instance that line up with the rotated columns.

but how can I retrieve column cross section angle to the BasisX? and I don't want to change the column to slanted

any suggestions? Thanks

[jeremytammik]

As far as I know, the column always has a valid location.

Possibly, it is a location point for a vertical column and a location line when not vertical.

In either case, you can easily calculate the angle from that data: 90 degrees for a point location, and using the location line start and end points in the other case.

[Anonymous]

Thanks for your tips.

I eventually figure this out by using the Revit Lookup.

LocationPointloPoint = fi.Location as LocationPoint;
double poRota = loPoint.Rotation;

This returns exactly what i need.