/// <summary> /// Returns the projected footprint are of the site, this value is derived and makes use of property sets not in the ifc schema /// </summary> /// <param name="site"></param> /// <returns></returns> public static IfcAreaMeasure?GetFootprintArea(this IfcSite site) { IfcQuantityArea qArea = site.GetQuantity <IfcQuantityArea>("BaseQuantities", "GrossArea"); if (qArea == null) { qArea = site.GetQuantity <IfcQuantityArea>("GrossArea"); //just look for any area } if (qArea != null) { return(qArea.AreaValue); } //if revit try their value IfcAreaMeasure val = site.GetPropertySingleValue <IfcAreaMeasure>("PSet_Revit_Dimensions", "Projected Area"); if (val != null) { return(val); } return(null); }