https://community.graphisoft.com/t5/Archicad-C-API/APIAny-PolygonId2SurfaceTypeID/m-p/253404#M4004 <BLOCKQUOTE>neerson wrote:<BR />Hi,<BR /> Could you give me a working example for this?<BR /> It's not clear which kind of polygonID mentioned here..<BR /> GSErrCode ACAPI_Goodies (<BR /> APIAny_PolygonId2SurfaceTypeID,<BR /> const API_Element* elem,<BR /> const Int32* polygonId,<BR /> API_SurfaceTypeID* surfaceType<BR /> ); </BLOCKQUOTE> I don't have a working example, but I can give a bit more detail. This relevant to the ModelerAPI, where the polygonID is the index of a polygon (face) in a model view. The view will be comprised of 3D bodies, which are comprised of 3D polygons, which are defined by edges that are comprised of a start and end point. If you're iterating through the polygons in a 3D body, this method will tell you the role that face plays in the model, e.g. a wall reference side. Thu, 21 Dec 2017 14:59:33 GMT Ralph Wessel 2017-12-21T14:59:33Z https://community.graphisoft.com/t5/Archicad-C-API/APIAny-PolygonId2SurfaceTypeID/m-p/253403#M4003 <DIV class="actalk-migrated-content">Hi,<BR />Could you give me a working example for this?<BR />It's not clear which kind of polygonID mentioned here..<BR /><BR /><BR />GSErrCode ACAPI_Goodies (<BR />APIAny_PolygonId2SurfaceTypeID,<BR />const API_Element* elem,<BR />const Int32* polygonId,<BR />API_SurfaceTypeID* surfaceType<BR />);<BR /><BR />elem<BR />[in] Parameter elem for element type identification. Give elem.header.guid or elem.header.typeId. In case of specify roof elem.roof.roofClass also.<BR />polygonId<BR />[in] Parameter polygonId.<BR />surfaceType<BR />[out] Parameter surfaceType.</DIV> Tue, 06 Dec 2022 12:47:16 GMT https://community.graphisoft.com/t5/Archicad-C-API/APIAny-PolygonId2SurfaceTypeID/m-p/253403#M4003 Anonymous 2022-12-06T12:47:16Z https://community.graphisoft.com/t5/Archicad-C-API/APIAny-PolygonId2SurfaceTypeID/m-p/253404#M4004 <BLOCKQUOTE>neerson wrote:<BR />Hi,<BR /> Could you give me a working example for this?<BR /> It's not clear which kind of polygonID mentioned here..<BR /> GSErrCode ACAPI_Goodies (<BR /> APIAny_PolygonId2SurfaceTypeID,<BR /> const API_Element* elem,<BR /> const Int32* polygonId,<BR /> API_SurfaceTypeID* surfaceType<BR /> ); </BLOCKQUOTE> I don't have a working example, but I can give a bit more detail. This relevant to the ModelerAPI, where the polygonID is the index of a polygon (face) in a model view. The view will be comprised of 3D bodies, which are comprised of 3D polygons, which are defined by edges that are comprised of a start and end point. If you're iterating through the polygons in a 3D body, this method will tell you the role that face plays in the model, e.g. a wall reference side. Thu, 21 Dec 2017 14:59:33 GMT https://community.graphisoft.com/t5/Archicad-C-API/APIAny-PolygonId2SurfaceTypeID/m-p/253404#M4004 Ralph Wessel 2017-12-21T14:59:33Z