topic IES light files in Archicad C++ API

IES light files

Anonymous — Thu, 13 Jul 2023 13:27:21 GMT

Is there a way to get the location of a source IES light file? When reading the ParameterList data of the lights in a BaseElement, the actual file name is listed in the C4D_PHO_FILE field but no source path.

I'd like to either get the path to the original file or the imported content.

I'm creating the IES light by using the ArchiCAD library part "IES Light 18.gsm" and setting the Photometric File Name field to the IES file I'm importing. (I need the IES info for an external renderer.)

Any tips appreciated.

UPDATE: actually getting the info from the light instance is far preferable to a source path (for portability).

IES lights

Anonymous — Fri, 11 Sep 2015 07:47:21 GMT

To continue the conversation with myself, I can locate the library item that represents the IES file and was hoping to retrieve the custom data via ACAPI_LibPart_GetSection. But I'm not sure what kind of data ID I need to pass in. I've tried most of the standard ones (the 4-char codes) but I may be doing something else wrong.

When I export the light and convert to XML it doesn't look like the IES info is there.

Re: IES light files

Laszlo Nagy — Fri, 11 Sep 2015 14:36:12 GMT

Well, in that case I merge the two topics to ease this conversation.

Sorry, I cannot answer your questions I am not a C++ programmer.