topic Re: How to set values for array value in Object? in Archicad C++ API

How to set values for array value in Object?

Tran Thanh Lo — Mon, 16 Sep 2024 12:27:53 GMT

HI guys,

I have an object tool loaded into ArchiCAD and it has a parameter which is an array value. Now I want to get it and set a new value for it.

I did it like this as in LibPart_Test:

UInt32 totalParams1 = BMGetHandleSize((GSConstHandle)memo.params); UInt32 totalParams = BMGetHandleSize((GSConstHandle)memo.params) / sizeof(API_AddParType); for (UInt32 i = 0; i < totalParams; i++) { if ((*memo.params)[i].name == (GS::UniString)"matrix_area") { (*memo.params)[i].value.array = BMAllocateHandle((*memo.params)[i].dim1 * (*memo.params)[i].dim2 * sizeof(double), ALLOCATE_CLEAR, 0); double** arrHdl = reinterpret_cast<double**>((*memo.params)[i].value.array); for (Int32 k = 0; k < (*memo.params)[i].dim1; k++) for (Int32 j = 0; j < (*memo.params)[i].dim2; j++) (*arrHdl)[k * (*memo.params)[i].dim2 + j] = (k == j ? 1.1 : 0.0); } }

But It's not right.

Can you help me know where I'm wrong?

Thank you very much.

Re: How to set values for array value in Object?

BerndSchwarzenbacher — Fri, 13 Oct 2023 05:58:02 GMT

Hi,

There could be a lot of different issues, depending mostly on where you get the memo from.
So please specify what you do before this code with the memo structure and also what specifically is not working.

One of my guesses is, that one of your dim1 or dim2 are maybe 0.

Best,

Bernd

Re: How to set values for array value in Object?

Tran Thanh Lo — Fri, 13 Oct 2023 16:41:14 GMT

Hi bschwb,

Thank you for responding, I get the memo like this. And my dim1 and dim2 have a value.

Can you help me tell me where I'm wrong?

API_Element element; API_ElementMemo memo; API_LibPart libPart; BNZeroMemory(&element, sizeof(API_Element)); BNZeroMemory(&libPart, sizeof(API_LibPart)); BNZeroMemory(&memo, sizeof(API_ElementMemo)); BNClear(element); BNClear(memo); GSErrCode err; BNZeroMemory(&libPart, sizeof(API_LibPart)); libPart.typeID = APILib_ObjectID; CHCopyC("{4FD10D67-2F29-4844-A65A-6597589B0CB5}-{3BC96B79-9E97-42A3-969C-600334C0D18D}", libPart.parentUnID); GS::ucscpy(libPart.docu_UName, L("Schedule1")); err = ACAPI_LibPart_Search(&libPart, false); if (err == APIERR_BADNAME) ACAPI_WriteReport("Khong tim thay thu vien", false); element.header.type = API_ObjectID; err = ACAPI_Element_GetDefaults(&element, &memo); if (err != NoError) { ACAPI_WriteReport("ACAPI_Element_GetDefaults has failed with error code %ld!", true, err); ACAPI_DisposeElemMemoHdls(&memo); return; } double aa = 0, bb = 0; Int32 addParNum; ACAPI_LibPart_GetParams(libPart.index, &aa, &bb, &addParNum, &memo.params); element.object.libInd = libPart.index; err = ACAPI_Goodies(APIAny_CloseParametersID);

And I change to this but it's still not right.

UInt32 totalParams1 = BMGetHandleSize((GSConstHandle)memo.params); UInt32 totalParams = BMGetHandleSize((GSConstHandle)memo.params) / sizeof(API_AddParType); int num_row = 8; int num_col = 4; for (UInt32 i = 0; i < totalParams; i++) { if ((*memo.params)[i].name == (GS::UniString)"matrix_area") { API_AddParType* pAddPar = &(*memo.params)[i]; double** arrHdl = reinterpret_cast<double**>(pAddPar->value.array); for (Int32 k = 0; k < num_row; k++) for (Int32 j = 0; j < num_col; j++) (*arrHdl)[k * num_col + j] = 11; BMKillHandle(reinterpret_cast<GSHandle*>(&arrHdl)); } }

Re: How to set values for array value in Object?

BerndSchwarzenbacher — Sun, 15 Oct 2023 22:57:55 GMT

There are a few issues with your code.

I think ACAPI_Goodies (APIAny_CloseParametersID) is unnecessary here (because you don't use all of the other APIAny_OpenParametersID etc.) Better to leave it out if you don't do the other stuff as well.
Don't kill the "arrHdl" handle after you just changed it! It references the data in the memo which you need to create the element.
It's still not clear if the dimensions you want and the dimensions of the actual allocated array parameter match.

Here's your code changed so it creates an object if you have a library part with an existing parameter called "matrix_area".

I'm using references instead of handles and pointers in some places because it's easier for me to read.

void Create () { API_Element element; API_ElementMemo memo; API_LibPart libPart; BNZeroMemory (&element, sizeof (API_Element)); BNZeroMemory (&libPart, sizeof (API_LibPart)); BNZeroMemory (&memo, sizeof (API_ElementMemo)); BNClear (element); BNClear (memo); GSErrCode err; libPart.typeID = APILib_ObjectID; GS::ucscpy (libPart.docu_UName, L ("test")); err = ACAPI_LibPart_Search (&libPart, false); if (err == APIERR_BADNAME) { ACAPI_WriteReport ("Khong tim thay thu vien", false); } element.header.type = API_ObjectID; err = ACAPI_Element_GetDefaults (&element, &memo); if (err != NoError) { ACAPI_WriteReport ("ACAPI_Element_GetDefaults has failed with error code %ld!", true, err); ACAPI_DisposeElemMemoHdls (&memo); return; } double aa = 0, bb = 0; Int32 addParNum; ACAPI_LibPart_GetParams (libPart.index, &aa, &bb, &addParNum, &memo.params); element.object.libInd = libPart.index; UInt32 totalParams = BMGetHandleSize((GSConstHandle)memo.params) / sizeof(API_AddParType); int num_row = 8; int num_col = 4; for (UInt32 i = 0; i < totalParams; i++) { if ((*memo.params)[i].name == (GS::UniString)"matrix_area") { auto& currentParam = (*memo.params)[i]; currentParam.dim1 = num_row; currentParam.dim2 = num_col; currentParam.value.array = BMReallocHandle (currentParam.value.array, num_row * num_col * sizeof (double), REALLOC_FULLCLEAR, 0); auto paramArray = reinterpret_cast<double*>(*currentParam.value.array); for (Int32 k = 0; k < num_row; k++) for (Int32 j = 0; j < num_col; j++) paramArray[k * num_col + j] = 11.0; // DON'T kill handle here already! We still need it to create the element! // It's just referenced through 'memo' there. } } err = ACAPI_Element_Create (&element, &memo); ACAPI_DisposeElemMemoHdls (&memo); }

If you can't get it to work, please provide more details of what is not working specifically (error codes, expected vs. actual behavior or crashes).

Hope that helps!

Bernd