how to get the projected area of object type?

[Anonymous]

Hi.
I have some 3d objects from gsm file.
I can't get the wanted area by ACAPI_Element_GetSurfaceQuantities
and ACAPI_Element_GetQuantities function.

Is there any way to get the projected area on the floor plan?
The attachment is my demostration.
the floor plan：
the 3D:

[Akos Somorjai]

Hi,

No, that's not so simple, because the object may have its own. 2D symbol, which is not projected from 3D. The recommended solution is that the object itself calculates the area, and stores that in a parameter. You can find more information about that at https://gdl.graphisoft.com .

Best, Akos