topic Re: retrieving 3d data from a modle in Archicad C++ API

retrieving 3d data from a modle

Anonymous — Mon, 07 Aug 2023 09:14:37 GMT

hey

the api stipulates that the following two function calls, ACAPI_3D_GetNum and ACAPI_3D_GetComponent are used to retrieve the data from archiCAD as meshes. however, it doesn't seem to work. i open an example file and the GetNum call returns zero.

This is my test code:

std::stringstream str;
long              nBody;
GSErrCode         err;

err = ACAPI_3D_GetNum (API_BodyID, &nBody);
str << "API_BodyID:" << "\t\t\t" << nBody << "\n";

::MessageBox(NULL, str.str().c_str(), "AHHAHAHA", MB_OK);

trying to just arbitrarily obtain a 3D object returns no error, but an incorrect object id.

can anyone help me with what i am doing wrong?

thanks a lot

Re: retrieving 3d data from a modle

Anonymous — Tue, 23 May 2006 20:50:41 GMT

yeah, this is an interesting problem. i tried toying with the provided 3D_Test project, and while i can get it to dump the geometry of any object that i click on, it will not iterate through the whole plan and dump everything at once. it too tells me that there are no bodies in the plan. i don't get an error code.

any help would really be appreciated.

Re: retrieving 3d data from a modle

Akos Somorjai — Mon, 29 May 2006 13:01:51 GMT

The 3D window has to be active, and a valid model is required. Also, the 3D window has to be in shading mode, not in wireframe.

HTH,

Akos

Re: retrieving 3d data from a modle

Anonymous — Tue, 24 Apr 2007 12:52:13 GMT

Akos wrote:
The 3D window has to be active, and a valid model is required. Also, the 3D window has to be in shading mode, not in wireframe.

HTH,

Akos

Are there any way to get around this problem? Can't I do this from the addon so the user doesn't have to be bothered?

Re: retrieving 3d data from a modle

Ralph Wessel — Tue, 24 Apr 2007 20:42:17 GMT

jmi wrote:
Akos wrote:
The 3D window has to be active, and a valid model is required. Also, the 3D window has to be in shading mode, not in wireframe.

HTH,

Akos
Are there any way to get around this problem? Can't I do this from the addon so the user doesn't have to be bothered?

Perhaps 'ACAPI_Element_Get3DInfo' is what you are after?

Re: retrieving 3d data from a modle

Anonymous — Mon, 24 May 2010 13:28:03 GMT

Akos wrote:
The 3D window has to be active, and a valid model is required. Also, the 3D window has to be in shading mode, not in wireframe.

I think it should be implemented like this (from 3D_Test example):


short		origSight = 0, planSight;
// we must switch to the 3D Window's sight
planSight = (short) API_PlanSight;
err = ACAPI_3D_SelectSight (&planSight, &origSight);
if (err != NoError) {
	ErrorBeep ("Cannot switch to the 3D sight", err);
	return;
}

Re: retrieving 3d data from a modle

Ralph Wessel — Mon, 24 May 2010 20:28:36 GMT

archonmaster wrote:
I think it should be implemented like this (from 3D_Test example):

It's not worth answering questions that are years old - after all, the answer might change every year