Get missing (curtain) walls of a room boundary

[Anonymous]

We are looking for a method to get all windows of each room.

We tried to use the standard DetermineAdjacentElementLengthsAndWallAreas as described in the "Retrieving Room Boundaries" in the Revit API Help and extra SpatialElementGeometryCalculator class.

By doing so, we have found out that some walls are not recognized by the room, because these walls do not get to become room bounded. For example when you have two walls stacked up on each other, when the upper wall is smaller than the bottom wall, the bottom wall is room bounded and the upper wall is not. How can you find these missing (upper) walls?

What is your advise to approach this?

Do you advise to create a Ray Trace method such as FindReferencesByDirection (of which we don't have the source, and we find this tricky) or is there a much more simpler method?

A Revit project example is attatched. We try to get the curtain wall areas of room numbers 78 and 100.

[augusto.goncalves · Accepted solution]

Hi,

Indeed the Ray Trace (now known as FindReferenceByDirection) is the most reliable way, although can be more complex. With that you can certainly find whatever relies on each direction.

On the newer version of the SDK you can find this sample at \Revit 2015 SDK\Samples\FindReferencesByDirection\RaytraceBounce\

In this case, you'll need to use ir on 360 degrees (XY plane), but also looking UP and looking DOWN.

[Anonymous]

Hi Augusto Goncalves,

Thank you. That helped for us.

We got the ray trace feature using your "FindReferenceByDirection" working now.

Regards.