Is there an API method to programmatically split Wall or Slab elements?

Tran Thanh Lo — Mon, 16 Jun 2025 12:21:10 GMT

Hello everyone,

I'm currently developing an Archicad add-on using the C++ API and need to programmatically split Wall and Slab elements along a specified line or plane, similar to the manual Split operation available in the Archicad UI.

After reviewing the API documentation, I haven't found a direct function or method that performs this operation. I'm aware that the API_EditCmdID enumeration includes various edit commands like APIEdit_Drag, APIEdit_Rotate, etc., but none seem to correspond to a split function.

Is there an existing API function or recommended approach to achieve this? If not, what would be the best practice to emulate the split operation programmatically?

Any guidance or examples would be greatly appreciated.

Thank you!

Re: Is there an API method to programmatically split Wall or Slab elements?

BerndSchwarzenbacher — Tue, 17 Jun 2025 08:42:13 GMT

Hi Lo!

I also don't think that there's a split command directly available in the API.
To make a similar command yourself I'd approach it roughly like this:

User Input handling to draw the line
Check for intersections with existing elements (e.g. walls)
Shorten the intersected wall up to the intersection
Create a new wall with the same wall settings and place it on the other side of the intersection

Hope that helps,
Bernd

topic Re: Is there an API method to programmatically split Wall or Slab elements? in Archicad C++ API

Is there an API method to programmatically split Wall or Slab elements?

Re: Is there an API method to programmatically split Wall or Slab elements?