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.. DO NOT EDIT THIS FILE, but the NavigationPolygon.xml source instead.
.. The source is found in doc/classes or modules/<name>/doc_classes.

.. _class_NavigationPolygon:

NavigationPolygon
=================

**Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

A node that has methods to draw outlines or use indices of vertices to create navigation polygons.

Description
-----------

There are two ways to create polygons. Either by using the :ref:`add_outline<class_NavigationPolygon_method_add_outline>` method, or using the :ref:`add_polygon<class_NavigationPolygon_method_add_polygon>` method.

Using :ref:`add_outline<class_NavigationPolygon_method_add_outline>`:


.. tabs::

 .. code-tab:: gdscript

    var polygon = NavigationPolygon.new()
    var outline = PackedVector2Array([Vector2(0, 0), Vector2(0, 50), Vector2(50, 50), Vector2(50, 0)])
    polygon.add_outline(outline)
    polygon.make_polygons_from_outlines()
    $NavigationRegion2D.navpoly = polygon

 .. code-tab:: csharp

    var polygon = new NavigationPolygon();
    var outline = new Vector2[] { new Vector2(0, 0), new Vector2(0, 50), new Vector2(50, 50), new Vector2(50, 0) };
    polygon.AddOutline(outline);
    polygon.MakePolygonsFromOutlines();
    GetNode<NavigationRegion2D>("NavigationRegion2D").Navpoly = polygon;



Using :ref:`add_polygon<class_NavigationPolygon_method_add_polygon>` and indices of the vertices array.


.. tabs::

 .. code-tab:: gdscript

    var polygon = NavigationPolygon.new()
    var vertices = PackedVector2Array([Vector2(0, 0), Vector2(0, 50), Vector2(50, 50), Vector2(50, 0)])
    polygon.vertices = vertices
    var indices = PackedInt32Array([0, 1, 2, 3])
    polygon.add_polygon(indices)
    $NavigationRegion2D.navpoly = polygon

 .. code-tab:: csharp

    var polygon = new NavigationPolygon();
    var vertices = new Vector2[] { new Vector2(0, 0), new Vector2(0, 50), new Vector2(50, 50), new Vector2(50, 0) };
    polygon.Vertices = vertices;
    var indices = new int[] { 0, 1, 2, 3 };
    polygon.AddPolygon(indices);
    GetNode<NavigationRegion2D>("NavigationRegion2D").Navpoly = polygon;



Tutorials
---------

- `2D Navigation Demo <https://godotengine.org/asset-library/asset/117>`__

Methods
-------

+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`add_outline<class_NavigationPolygon_method_add_outline>` **(** :ref:`PackedVector2Array<class_PackedVector2Array>` outline **)**                                                |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`add_outline_at_index<class_NavigationPolygon_method_add_outline_at_index>` **(** :ref:`PackedVector2Array<class_PackedVector2Array>` outline, :ref:`int<class_int>` index **)** |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`add_polygon<class_NavigationPolygon_method_add_polygon>` **(** :ref:`PackedInt32Array<class_PackedInt32Array>` polygon **)**                                                    |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`clear_outlines<class_NavigationPolygon_method_clear_outlines>` **(** **)**                                                                                                      |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`clear_polygons<class_NavigationPolygon_method_clear_polygons>` **(** **)**                                                                                                      |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`get_outline<class_NavigationPolygon_method_get_outline>` **(** :ref:`int<class_int>` idx **)** |const|                                                                          |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`int<class_int>`                               | :ref:`get_outline_count<class_NavigationPolygon_method_get_outline_count>` **(** **)** |const|                                                                                        |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`PackedInt32Array<class_PackedInt32Array>`     | :ref:`get_polygon<class_NavigationPolygon_method_get_polygon>` **(** :ref:`int<class_int>` idx **)**                                                                                  |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`int<class_int>`                               | :ref:`get_polygon_count<class_NavigationPolygon_method_get_polygon_count>` **(** **)** |const|                                                                                        |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`get_vertices<class_NavigationPolygon_method_get_vertices>` **(** **)** |const|                                                                                                  |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`make_polygons_from_outlines<class_NavigationPolygon_method_make_polygons_from_outlines>` **(** **)**                                                                            |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`remove_outline<class_NavigationPolygon_method_remove_outline>` **(** :ref:`int<class_int>` idx **)**                                                                            |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`set_outline<class_NavigationPolygon_method_set_outline>` **(** :ref:`int<class_int>` idx, :ref:`PackedVector2Array<class_PackedVector2Array>` outline **)**                     |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| void                                                | :ref:`set_vertices<class_NavigationPolygon_method_set_vertices>` **(** :ref:`PackedVector2Array<class_PackedVector2Array>` vertices **)**                                             |
+-----------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Method Descriptions
-------------------

.. _class_NavigationPolygon_method_add_outline:

- void **add_outline** **(** :ref:`PackedVector2Array<class_PackedVector2Array>` outline **)**

Appends a :ref:`PackedVector2Array<class_PackedVector2Array>` that contains the vertices of an outline to the internal array that contains all the outlines. You have to call :ref:`make_polygons_from_outlines<class_NavigationPolygon_method_make_polygons_from_outlines>` in order for this array to be converted to polygons that the engine will use.

----

.. _class_NavigationPolygon_method_add_outline_at_index:

- void **add_outline_at_index** **(** :ref:`PackedVector2Array<class_PackedVector2Array>` outline, :ref:`int<class_int>` index **)**

Adds a :ref:`PackedVector2Array<class_PackedVector2Array>` that contains the vertices of an outline to the internal array that contains all the outlines at a fixed position. You have to call :ref:`make_polygons_from_outlines<class_NavigationPolygon_method_make_polygons_from_outlines>` in order for this array to be converted to polygons that the engine will use.

----

.. _class_NavigationPolygon_method_add_polygon:

- void **add_polygon** **(** :ref:`PackedInt32Array<class_PackedInt32Array>` polygon **)**

Adds a polygon using the indices of the vertices you get when calling :ref:`get_vertices<class_NavigationPolygon_method_get_vertices>`.

----

.. _class_NavigationPolygon_method_clear_outlines:

- void **clear_outlines** **(** **)**

Clears the array of the outlines, but it doesn't clear the vertices and the polygons that were created by them.

----

.. _class_NavigationPolygon_method_clear_polygons:

- void **clear_polygons** **(** **)**

Clears the array of polygons, but it doesn't clear the array of outlines and vertices.

----

.. _class_NavigationPolygon_method_get_outline:

- :ref:`PackedVector2Array<class_PackedVector2Array>` **get_outline** **(** :ref:`int<class_int>` idx **)** |const|

Returns a :ref:`PackedVector2Array<class_PackedVector2Array>` containing the vertices of an outline that was created in the editor or by script.

----

.. _class_NavigationPolygon_method_get_outline_count:

- :ref:`int<class_int>` **get_outline_count** **(** **)** |const|

Returns the number of outlines that were created in the editor or by script.

----

.. _class_NavigationPolygon_method_get_polygon:

- :ref:`PackedInt32Array<class_PackedInt32Array>` **get_polygon** **(** :ref:`int<class_int>` idx **)**

Returns a :ref:`PackedInt32Array<class_PackedInt32Array>` containing the indices of the vertices of a created polygon.

----

.. _class_NavigationPolygon_method_get_polygon_count:

- :ref:`int<class_int>` **get_polygon_count** **(** **)** |const|

Returns the count of all polygons.

----

.. _class_NavigationPolygon_method_get_vertices:

- :ref:`PackedVector2Array<class_PackedVector2Array>` **get_vertices** **(** **)** |const|

Returns a :ref:`PackedVector2Array<class_PackedVector2Array>` containing all the vertices being used to create the polygons.

----

.. _class_NavigationPolygon_method_make_polygons_from_outlines:

- void **make_polygons_from_outlines** **(** **)**

Creates polygons from the outlines added in the editor or by script.

----

.. _class_NavigationPolygon_method_remove_outline:

- void **remove_outline** **(** :ref:`int<class_int>` idx **)**

Removes an outline created in the editor or by script. You have to call :ref:`make_polygons_from_outlines<class_NavigationPolygon_method_make_polygons_from_outlines>` for the polygons to update.

----

.. _class_NavigationPolygon_method_set_outline:

- void **set_outline** **(** :ref:`int<class_int>` idx, :ref:`PackedVector2Array<class_PackedVector2Array>` outline **)**

Changes an outline created in the editor or by script. You have to call :ref:`make_polygons_from_outlines<class_NavigationPolygon_method_make_polygons_from_outlines>` for the polygons to update.

----

.. _class_NavigationPolygon_method_set_vertices:

- void **set_vertices** **(** :ref:`PackedVector2Array<class_PackedVector2Array>` vertices **)**

Sets the vertices that can be then indexed to create polygons with the :ref:`add_polygon<class_NavigationPolygon_method_add_polygon>` method.

.. |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.)`