Retrieve common geometry of all participants

[mr.engineer.aec]

 Hi guys,

I have faces intersect, i want retrieve common geometry of all participants.
How can i solved this issue ?

Thank in advanced.

[Yien_Chao]

Maybe using this function https://www.revitapidocs.com/2020/eb8735d7-28fc-379d-9de9-1e02326851f5.htm

If the element is inside 2 bounding boxes then its common.

[jeremytammik · Accepted solution]

To me, it sounds as if you are looking for a 2D Boolean intersection operation.

Revit does not provide this functionality.

However, you can easily make use of other .NET libraries implementing it and reference those in your Revit add-in.

I have repeatedly made use of the Clipper library for such purposes:

• Room and Wall Adjacent Area -- http://thebuildingcoder.typepad.com/blog/2009/01/room-and-wall-adjacent-area.html
• Boolean Operations for 2D Polygons -- http://thebuildingcoder.typepad.com/blog/2009/02/boolean-operations-for-2d-polygons.html
• GetPolygon Extension Methods -- http://thebuildingcoder.typepad.com/blog/2010/02/getpolygon-extension-methods.html
• Boolean Operations for 2D Polygons -- http://thebuildingcoder.typepad.com/blog/2013/09/boolean-operations-for-2d-polygons.html
• Saving a Solid to a SAT File Implementation -- http://thebuildingcoder.typepad.com/blog/2013/09/saving-a-solid-to-a-sat-file-implementation.html
• Creating Topography Contours and Building Masses -- http://thebuildingcoder.typepad.com/blog/2014/11/creating-topography-contours-and-building-masses.ht...
• More on Wall Opening Areas per Room -- http://thebuildingcoder.typepad.com/blog/2016/04/more-on-wall-opening-areas-per-room.html
• Fire Rating Zone Intersection -- https://thebuildingcoder.typepad.com/blog/2018/12/fire-rating-zone-intersection.html
• Automated PDF Report and 2D Sketch Booleans -- https://thebuildingcoder.typepad.com/blog/2019/11/automated-pdf-report-and-2d-sketch-booleans.html
• Dashboard, CreateViaOffset and Room Outer Outline -- https://thebuildingcoder.typepad.com/blog/2019/12/dashboards-createviaoffset-and-room-outline-algori...
• Extrusion Analyser and 2D Boolean Element Outline -- https://thebuildingcoder.typepad.com/blog/2020/01/extrusion-analyser-and-2d-boolean-element-outline....

The last pointer highlights the most interesting and up-to-date sample using it so far, ElementOutline:

• https://github.com/jeremytammik/ElementOutline

[mr.engineer.aec]

Thank @jeremytammik