topic Re: Get MEP Object type in Add On API C++ in Archicad C++ API

Get MEP Object type in Add On API C++

Ankur Yadav — Tue, 23 May 2023 06:47:58 GMT

I want to identify the MEP object type like whether it's a pipe, duct, bend, cable tray etc. I am getting the library object and properties. How do i identify if an object and library part is of specific type (pipe, duct, bend, cable tray etc). Any link to documentation or code snippet would be helpful.

Re: Get MEP Object type in Add On API C++

kuvbur — Tue, 23 May 2023 08:12:51 GMT

You can filter it by API_ElemVariationID.

Re: Get MEP Object type in Add On API C++

Ankur Yadav — Tue, 23 May 2023 10:43:26 GMT

But it doesn't have classification for MEP elements. I need MEP element identification.

Re: Get MEP Object type in Add On API C++

kuvbur — Tue, 23 May 2023 10:52:59 GMT

That's right, there is no MEP in the standard list of subtypes, since MEP is not part of Archiсad. All MEP elements are registered with the ACAPI_Register_Subtype function and you can look up their API_ElemVariationID and build a dictionary with constants.

Re: Get MEP Object type in Add On API C++

Ankur Yadav — Tue, 23 May 2023 10:55:38 GMT

Can we access this type info of library parts using API

Re: Get MEP Object type in Add On API C++

kuvbur — Tue, 23 May 2023 11:13:50 GMT

No, you need to look up the value in the element's API_Elem_Head

Re: Get MEP Object type in Add On API C++

Ankur Yadav — Tue, 23 May 2023 13:44:03 GMT

But element's API_Elem_Head has type set as API_ObjectID for all the MEP library parts. I'm not able to distinguish between them.

Re: Get MEP Object type in Add On API C++

poco2013 — Tue, 23 May 2023 15:05:25 GMT

Not sure this will help- BUT- since MEP elements are just special Library Parts, they all appear to have a special parameter which distinguishes the MEP version number - currently 4. You could simply create a schedule with lists the Parameter -- "MEP Version" - If the object has that parameter, it is a MEP element, if not, just a object.

If you are confined to a C++ AddOn, you can use the functions of "ACAPI_LibPart_Get to get the part's USID and then use "ACAPI_LibPart_GetParams" to iterate through the parameters to find,or not, the "MEP Version" variable.

A third variant would be to use a simple Python script to return all the parameters of a Library Object, then search though that. That requires a C++ AddOn in association with the script to return the information. Such a AddOn and sample script is available on my GitHub site, if interested.

By far, the easiest is to just create a schedule and filter the results, but you my have other requirements?

Re: Get MEP Object type in Add On API C++

kuvbur — Tue, 23 May 2023 15:06:03 GMT

API_ObjectID is API_ElemTypeID. Look at API_ElemVariationID, it is part of API_ElemType struct