|  Exporter  | 
 Splits a roof or floor element composed of planar surfaces into a set of roughly vertical extruded loops of uniform depth if possible. 
 Namespace: Autodesk.Revit.DB.IFC
Assembly: RevitAPIIFC (in RevitAPIIFC.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  public static IList<HostObjectSubcomponentInfo> ComputeSubcomponents(
	HostObject roofOrFloor
)Parameters
- roofOrFloor HostObject
- The roof or floor.
Return Value
IList HostObjectSubcomponentInfoA collection of computed components.
 Exceptions
 Exceptions  | Exception | Condition | 
|---|---|
| ArgumentException | The host object roofOrFloor must be a floor or a non face-based roof. | 
| ArgumentNullException | A non-optional argument was null | 
| InvalidOperationException | The roof or floor cannot be split into subcomponents by this routine. Possible reasons are, among others: (1) the roof or floor contains non-planar surfaces, (2) the roof or floor cannot be divided into sub-components of equal thickness, or (3) the roof subcomponents contain inner boundary loops. | 
 See Also
 See Also