topic Re: How to assign a texture to an API_MaterialType in Archicad C++ API

How to assign a texture to an API_MaterialType

mats1 — Tue, 10 Jun 2025 12:26:28 GMT

I have a program to create a custom API_Attribute with a specific color. Now i want to assign a texture to it. I have found a list of images using LibraryManager::FindLibParts but when i assign the texture to the API_MaterialType in API_Attribute it is like it is not saved.

API_Attribute material; BNZeroMemory(&material, sizeof(API_Attribute));

auto libParts = libraryManager->FindLibParts( [](const ACAPI::Library::LibPart &libPart) { return ACAPI::Library::v1::SelectImageLibParts(libPart); }); auto libPart = libParts[0]; IO::Location fLoc; BNZeroMemory(&fLoc, sizeof(IO::Location)); auto tmp = libPart.GetLocation().Unwrap(); memcpy((void *)&fLoc, (void *)&tmp, sizeof(IO::Location));

then i am assigning it to my API_Attribute like this:

material.material.texture.fileLoc = &fLoc; memcpy(material.material.texture.texName, libPart.GetName()->ToCStr(), 256); material.material.texture.status = 4096; material.material.texture.xSize = 250; material.material.texture.ySize = 250;

Please help me, thanks in advance!

Re: How to assign a texture to an API_MaterialType

Krille-Alster — Tue, 10 Jun 2025 11:50:27 GMT

Very good question Mats.

Re: How to assign a texture to an API_MaterialType

mats1 — Wed, 11 Jun 2025 08:09:11 GMT

I even tried this but it didn't work.

material.material.texture.fileLoc = new IO::Location( "/Applications/Graphisoft/Archicad 28/Archicad " "bibliotekspaket/Surface Catalog.libpack/Surface Catalog.lcf/Surface " "Catalog/[Timg] Textures/Concrete/Concrete - 02 -opt.jpg"); unsigned char binaryData[] = {66, 101, 116, 111, 110, 103, 32, 45, 32, 48, 50, 32, 45, 111, 112, 116}; for (int i = 0; i < 16; i++) { material.material.texture.texName[i] = binaryData[i]; } material.material.texture.ySize = 250; material.material.texture.xSize = 250; material.material.texture.withoutExtension = false;

Re: How to assign a texture to an API_MaterialType

Krille-Alster — Wed, 11 Jun 2025 10:53:28 GMT