// OnViewBegin marks the beginning of a 3D view to be exported.
public RenderNodeAction OnViewBegin(
ViewNode InViewNode // render node associated with the 3D view
)
{
// Set the level of detail when tessellating faces (between -1 and 15).
InViewNode.LevelOfDetail = LevelOfTessellation;
// Initialize the world transform for the 3D view being processed.
WorldTransformStack.Push(Transform.Identity);
// Create an empty Datasmith scene.
if (DirectLink != null)
{
DirectLink.OnBeginExport();
DatasmithScene = DirectLink.DatasmithScene;
}
else
{
DatasmithScene = new FDatasmithFacadeScene(HOST_NAME, VENDOR_NAME, PRODUCT_NAME, ProductVersion);
}
DatasmithScene.PreExport();
View3D ViewToExport = RevitDocument.GetElement(InViewNode.ViewId) as View3D;
if (DatasmithFilePaths != null && !DatasmithFilePaths.TryGetValue(ViewToExport.Id, out CurrentDatasmithFilePath))
{
return(RenderNodeAction.Skip); // TODO log error?
}
// Keep track of the active Revit document being exported.
PushDocument(RevitDocument);
// Add a new camera actor to the Datasmith scene for the 3D view camera.
AddCameraActor(ViewToExport, InViewNode.GetCameraInfo());
// We want to export the 3D view.
return(RenderNodeAction.Proceed);
}
