https://community.graphisoft.com/t5/Archicad-C-API/how-to-get-the-projected-area-of-object-type/m-p/287534#M2650 Hi,<BR /> <BR /> 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 <A href="https://gdl.graphisoft.com" target="_blank">https://gdl.graphisoft.com</A> .<BR /> <BR /> Best, Akos Mon, 10 Feb 2020 08:48:29 GMT Akos Somorjai 2020-02-10T08:48:29Z https://community.graphisoft.com/t5/Archicad-C-API/how-to-get-the-projected-area-of-object-type/m-p/287533#M2649 <DIV class="actalk-migrated-content">Hi.<BR />I have some 3d objects from gsm file. <BR />I can't get the wanted area by ACAPI_Element_GetSurfaceQuantities<BR />and ACAPI_Element_GetQuantities function.<BR /><BR />Is there any way to get the projected area on the floor plan?<BR />The attachment is my demostration.<BR />the floor plan： <BR />the 3D:</DIV> Tue, 04 Oct 2022 14:20:44 GMT https://community.graphisoft.com/t5/Archicad-C-API/how-to-get-the-projected-area-of-object-type/m-p/287533#M2649 Anonymous 2022-10-04T14:20:44Z https://community.graphisoft.com/t5/Archicad-C-API/how-to-get-the-projected-area-of-object-type/m-p/287534#M2650 Hi,<BR /> <BR /> 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 <A href="https://gdl.graphisoft.com" target="_blank">https://gdl.graphisoft.com</A> .<BR /> <BR /> Best, Akos Mon, 10 Feb 2020 08:48:29 GMT https://community.graphisoft.com/t5/Archicad-C-API/how-to-get-the-projected-area-of-object-type/m-p/287534#M2650 Akos Somorjai 2020-02-10T08:48:29Z