topic Re: how to get the floor information of a building model in Archicad C++ API

how to get the floor information of a building model

Anonymous — Thu, 29 Sep 2022 08:08:47 GMT

I'm a new Archicad Api developer,I want to know how get the floor information of a building model. I find that these are
element,classification concept in Archicad Api,but no floor or building concept.
How can I solve the problem?
Your advice/suggestoins are appreciated.

Re: how to get the floor information of a building model

Ralph Wessel — Fri, 11 Oct 2019 08:19:12 GMT

Sorry, I'm not clear on the question. Do you want the building storey information, e.g. the name, base level and height of each floor in the building?

Re: how to get the floor information of a building model

Anonymous — Fri, 11 Oct 2019 08:25:21 GMT

Ralph wrote:
Sorry, I'm not clear on the question. Do you want the building storey information, e.g. the name, base level and height of each floor in the building?

yes. .How can I get the Information? thank you

Re: how to get the floor information of a building model

Ralph Wessel — Fri, 11 Oct 2019 08:56:48 GMT

Ok, take a look at using ACAPI_Environment with APIEnv_GetStorySettingsID, e.g.:


	API_StoryInfo storyInfo;
	BNZeroMemory(& storyInfo, sizeof (API_StoryInfo));
	GSErrCode err = ACAPI_Environment(APIEnv_GetStorySettingsID, &storyInfo, nullptr);
		//…get whatever you need from the story data
	BMKillHandle((GSHandle *) &storyInfo.data);

The API_StoryInfo structure will have everything you need.

Re: how to get the floor information of a building model

Anonymous — Fri, 11 Oct 2019 11:14:33 GMT

Thanks.
I have several other problems。
First I can't understant the meaning of 'Database' in API, are theres several 'Database' in a project?
If I need compute the area of a building that contains many floors,should I traverse all elements of the building？e.g like Second,I think a building is a classification that contains many elements in ArchiCad, is the idea right?

Third,how can I construct two buiding in a project？

Re: how to get the floor information of a building model

Ralph Wessel — Fri, 11 Oct 2019 12:25:55 GMT

When you say "Building", do you mean as defined by IFC?

Re: how to get the floor information of a building model

Anonymous — Sat, 12 Oct 2019 00:45:38 GMT

Ralph wrote:
When you say "Building", do you mean as defined by IFC?

except IFC，is there the "Building" concept in Archicad？
Also，I can't understand the meaning of "Database" ？

How can I get all elements in some floor by Archicad API？

Re: how to get the floor information of a building model

Ralph Wessel — Sat, 12 Oct 2019 08:56:21 GMT

The ARCHICAD API doesn't really define the concept of a 'building' apart from IFC. We've had to rely on geometric methods to discover the perimeter of a building within a project and then allocate elements to buildings on the basis of containment.

The API doesn't have a formal concept of a database either, at least not in the conventional sense. A database is loosely a collection of homogenous data structures, e.g. all attributes or all elements.

Most API calls don' reference a database – the ones that do are mostly found in the documentation for ACAPI_Database, e.g. APIDb_ChangeCurrentDatabaseID (which changes the active database). Once a database is 'set', other API calls act on that database, e.g. ACAPI_Element_Get to retrieve a specific element.

The element data structure is API_Element. You can determine which floor an element belongs to by inspecting its header, header.floorInd. The details of the floor can be retrieved using the method I described above with APIEnv_GetStorySettingsID.

Re: how to get the floor information of a building model

Anonymous — Mon, 14 Oct 2019 03:04:28 GMT

Ralph wrote:
The ARCHICAD API doesn't really define the concept of a 'building' apart from IFC. We've had to rely on geometric methods to discover the perimeter of a building within a project and then allocate elements to buildings on the basis of containment.

The API doesn't have a formal concept of a database either, at least not in the conventional sense. A database is loosely a collection of homogenous data structures, e.g. all attributes or all elements.

Most API calls don' reference a database – the ones that do are mostly found in the documentation for ACAPI_Database, e.g. APIDb_ChangeCurrentDatabaseID (which changes the active database). Once a database is 'set', other API calls act on that database, e.g. ACAPI_Element_Get to retrieve a specific element.

The element data structure is API_Element. You can determine which floor an element belongs to by inspecting its header, header.floorInd. The details of the floor can be retrieved using the method I described above with APIEnv_GetStorySettingsID.

Thank you very much. I understand it.