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Reads a Waverfront OBJ file (.obj) from a source file into a hierarchy of SceneItems. Each component of the file is read into a MeshModelInterface and attached to a MeshModelLibrary which can be added to a Scene. Both the output SceneItem and the MeshModelLibrary must be added to the SceneBuilder for visualisation.

Default label: "OBJ reader"
Member of plug-in: Rendering
Catalogue path: FileIO/Readers

Inputs:
File name	QString
Outputs:
Mesh model library	CSIRO::Mesh::MeshModelLibrary	Contains all of the MeshModelInterface data read from the file. Each component of the dataset is added to the library as a separate item with its own unique ID.
Scene item	CSIRO::Rendering::SceneItem	A hierarchy of Scene items, including MeshModelInstances, Transforms and Shaders. This top-level Scene item can be added to a SceneBuilder (along with the Mesh model library output) for visualisation.