godot-docs/classes/class_navigationpolygon.rst

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.. DO NOT EDIT THIS FILE, but the NavigationPolygon.xml source instead.
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.. _class_NavigationPolygon:

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

**Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`Reference<class_Reference>` **<** :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>`:

::

    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

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

::

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

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.