topic Re: How to access light intensity parameter? in Archicad C++ API

How to access light intensity parameter?

Anonymous — Wed, 15 Sep 2021 10:36:17 GMT

Hello everybody!

Seems like I need to update additional parameters that are not part of the lamp structure.
Let's say I need to update light Intensity. We have API_LampType::lightColor -> API_RGBColor but I can't find intensity there.
It's not a light related parameter? If not, how am I supposed to access that particular parameter?

Thanks

Re: How to access light intensity parameter?

Anonymous — Fri, 20 Mar 2020 13:02:13 GMT

Ok, now I see, this parameter is somehow linked with GDL object and for general light, it's clamped from 0..200.
So the better question, perhaps, is maybe how to access those GDL params??

Re: How to access light intensity parameter?

Ralph Wessel — Sat, 21 Mar 2020 10:03:49 GMT

Object parameters are stored in a separate memo structure. This allows you to avoid loading all the parameter data if you don't need it (for efficiency).

You can access this data directly using ACAPI_Element_GetMemo to fill the API_ElementMemo structure, but this is fairly complex for parameter access.

I think the best approach in your case is to use APIAny_GetActParametersID. The documentation for APIAny_OpenParametersID has some example code using this method that I think you will find useful.

Re: How to access light intensity parameter?

Anonymous — Mon, 23 Mar 2020 13:47:18 GMT

Thanks, Ralph. I'll take a look!