topic Re: GetInstanceCutoutFromWall Problem in Revit API Forum

GetInstanceCutoutFromWall Problem

Anonymous — Wed, 21 Jun 2017 08:15:11 GMT

I find that the ExporterIFCUtils.GetInstanceCutoutFromWall is a fine way to get the outer CurveLoop of a window or a door, but sometimes it does for some strange reason not work, and no helpful error message is supplied.

I have attached

a simple test project including only one wall containing two windows
a sample code that demonstrates the problem.

Now my hope is, that someone is able to explain why the GetInstanceCutoutFromWall works on one window but not on the other?

Regards

Jan Grenov

Re: GetInstanceCutoutFromWall Problem

Anonymous — Mon, 26 Jun 2017 08:57:21 GMT

Now I have determined when the error occurs!

It happens whenever an opening family (door or window ) is defined without and openingcut.

Openings must have an OpeningCut object. If not the GetInstanceCutoutFromWall will fail!

Regards

Jan Grenov

Re: GetInstanceCutoutFromWall Problem

jeremytammik — Mon, 26 Jun 2017 09:11:11 GMT

Dear Jan,

Thank you for very much raising, solving and sharing the solution for this issue.

This sounds like a nice, clear, succinct snippet of information that I will be glad to summarise and publish on The Building Coder as well for future reference.

Cheers,

Jeremy

Re: GetInstanceCutoutFromWall Problem

Revitalizer — Mon, 26 Jun 2017 09:35:56 GMT

Hi Jeremy,

would be useful to add this to the RevitAPI.chm, as well.

Rudi

Re: GetInstanceCutoutFromWall Problem

jeremytammik — Mon, 26 Jun 2017 10:55:55 GMT

Dear Rudi,

Thank you for the suggestion.

I'll see what i can do...

Cheers,

Jeremy

Re: GetInstanceCutoutFromWall Problem

jeremytammik — Tue, 27 Jun 2017 11:19:00 GMT

Thank you again, Jan, for pointing this out!

Saved here for posterity and future reference:

http://thebuildingcoder.typepad.com/blog/2017/06/copy-local-false-and-ifc-utils-for-wall-openings.html#2

Cheers,

Jeremy

Re: GetInstanceCutoutFromWall Problem

Anonymous — Tue, 27 Jun 2017 12:11:59 GMT

Glad to be of assistance.