Revit 2025.3 API
IExport |
This method marks the beginning of a Face to be exported.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)
Syntax
RenderNodeAction OnFaceBegin( FaceNode node )
Function OnFaceBegin ( node As FaceNode ) As RenderNodeAction
RenderNodeAction OnFaceBegin( FaceNode^ node )
abstract OnFaceBegin : node : FaceNode -> RenderNodeAction
Parameters
- node FaceNode
- An output node that represents a Face.
Return Value
RenderNodeActionReturn RenderNodeAction. Proceed if you wish to receive geometry (polymesh) for this face, or return RenderNodeAction.Skip otherwise.

Note that this method (as well as OnFaceEnd) is invoked only if the custom
exporter was set up to include geometric objects in the output stream.
See IncludeGeometricObjects for mode details.
See Also