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godot-docs/classes/class_polygonoccluder3d.rst
2022-02-22 10:06:27 +01:00

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.. Generated automatically by doc/tools/make_rst.py in Godot's source tree.
.. DO NOT EDIT THIS FILE, but the PolygonOccluder3D.xml source instead.
.. The source is found in doc/classes or modules/<name>/doc_classes.
.. _class_PolygonOccluder3D:
PolygonOccluder3D
=================
**Inherits:** :ref:`Occluder3D<class_Occluder3D>` **<** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`
Flat 2D polygon shape for use with occlusion culling in :ref:`OccluderInstance3D<class_OccluderInstance3D>`.
Description
-----------
``PolygonOccluder3D`` stores a polygon shape that can be used by the engine's occlusion culling system. When an :ref:`OccluderInstance3D<class_OccluderInstance3D>` with a ``PolygonOccluder3D`` is selected in the editor, an editor will appear at the top of the 3D viewport so you can add/remove points. All points must be placed on the same 2D plane, which means it is not possible to create arbitrary 3D shapes with a single ``PolygonOccluder3D``. To use arbitrary 3D shapes as occluders, use :ref:`ArrayOccluder3D<class_ArrayOccluder3D>` or :ref:`OccluderInstance3D<class_OccluderInstance3D>`'s baking feature instead.
See :ref:`OccluderInstance3D<class_OccluderInstance3D>`'s documentation for instructions on setting up occlusion culling.
Properties
----------
+-----------------------------------------------------+----------------------------------------------------------+--------------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`polygon<class_PolygonOccluder3D_property_polygon>` | ``PackedVector2Array()`` |
+-----------------------------------------------------+----------------------------------------------------------+--------------------------+
Property Descriptions
---------------------
.. _class_PolygonOccluder3D_property_polygon:
- :ref:`PackedVector2Array<class_PackedVector2Array>` **polygon**
+-----------+--------------------------+
| *Default* | ``PackedVector2Array()`` |
+-----------+--------------------------+
| *Setter* | set_polygon(value) |
+-----------+--------------------------+
| *Getter* | get_polygon() |
+-----------+--------------------------+
The polygon to use for occlusion culling. The polygon can be convex or concave, but it should have as few points as possible to maximize performance.
The polygon must *not* have intersecting lines. Otherwise, triangulation will fail (with an error message printed).
.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`