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An occluder is a box-shaped object that is used to cull objects' surfaces, bounds of which are not visible behind it. The surfaces behind the occluder are not sent to the GPU, thereby saving performance.
Depending on the Back face parameter value, the front or back faces of the occluder are used to cull surfaces. the front faces of the occluder include all of the occluder sides that face the camera. The back faces of the occluder include the sides that are behind the front faces.
Schematically, the occluder faces can be shown as follows:
Front faces of the occluder
Back faces of the occluder
To create an occluder via UnigineEditor:
- Run UnigineEditor.
- On the Menu bar, click Create -> Worlds -> Occluder.
- Place the occluder in the world and specify the required parameters for it.
On the Occluder tab of the Nodes panel, you can adjust the following parameters of the occluder: