godot-docs/classes/class_primitivemesh.rst

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.. _class_PrimitiveMesh:

PrimitiveMesh
=============

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

**Inherited By:** :ref:`BoxMesh<class_BoxMesh>`, :ref:`CapsuleMesh<class_CapsuleMesh>`, :ref:`CylinderMesh<class_CylinderMesh>`, :ref:`PlaneMesh<class_PlaneMesh>`, :ref:`PointMesh<class_PointMesh>`, :ref:`PrismMesh<class_PrismMesh>`, :ref:`QuadMesh<class_QuadMesh>`, :ref:`RibbonTrailMesh<class_RibbonTrailMesh>`, :ref:`SphereMesh<class_SphereMesh>`, :ref:`TextMesh<class_TextMesh>`, :ref:`TubeTrailMesh<class_TubeTrailMesh>`

Base class for all primitive meshes. Handles applying a :ref:`Material<class_Material>` to a primitive mesh.

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

Base class for all primitive meshes. Handles applying a :ref:`Material<class_Material>` to a primitive mesh. Examples include :ref:`BoxMesh<class_BoxMesh>`, :ref:`CapsuleMesh<class_CapsuleMesh>`, :ref:`CylinderMesh<class_CylinderMesh>`, :ref:`PlaneMesh<class_PlaneMesh>`, :ref:`PrismMesh<class_PrismMesh>`, :ref:`QuadMesh<class_QuadMesh>`, and :ref:`SphereMesh<class_SphereMesh>`.

Properties
----------

+---------------------------------+--------------------------------------------------------------+
| :ref:`AABB<class_AABB>`         | :ref:`custom_aabb<class_PrimitiveMesh_property_custom_aabb>` |
+---------------------------------+--------------------------------------------------------------+
| :ref:`bool<class_bool>`         | :ref:`flip_faces<class_PrimitiveMesh_property_flip_faces>`   |
+---------------------------------+--------------------------------------------------------------+
| :ref:`Material<class_Material>` | :ref:`material<class_PrimitiveMesh_property_material>`       |
+---------------------------------+--------------------------------------------------------------+

Methods
-------

+---------------------------+--------------------------------------------------------------------------------------------------------+
| :ref:`Array<class_Array>` | :ref:`_create_mesh_array<class_PrimitiveMesh_method__create_mesh_array>` **(** **)** |virtual| |const| |
+---------------------------+--------------------------------------------------------------------------------------------------------+
| :ref:`Array<class_Array>` | :ref:`get_mesh_arrays<class_PrimitiveMesh_method_get_mesh_arrays>` **(** **)** |const|                 |
+---------------------------+--------------------------------------------------------------------------------------------------------+

Property Descriptions
---------------------

.. _class_PrimitiveMesh_property_custom_aabb:

- :ref:`AABB<class_AABB>` **custom_aabb**

+----------+------------------------+
| *Setter* | set_custom_aabb(value) |
+----------+------------------------+
| *Getter* | get_custom_aabb()      |
+----------+------------------------+

Overrides the :ref:`AABB<class_AABB>` with one defined by user for use with frustum culling. Especially useful to avoid unexpected culling when using a shader to offset vertices.

----

.. _class_PrimitiveMesh_property_flip_faces:

- :ref:`bool<class_bool>` **flip_faces**

+----------+-----------------------+
| *Setter* | set_flip_faces(value) |
+----------+-----------------------+
| *Getter* | get_flip_faces()      |
+----------+-----------------------+

If set, the order of the vertices in each triangle are reversed resulting in the backside of the mesh being drawn.

This gives the same result as using :ref:`BaseMaterial3D.CULL_FRONT<class_BaseMaterial3D_constant_CULL_FRONT>` in :ref:`BaseMaterial3D.cull_mode<class_BaseMaterial3D_property_cull_mode>`.

----

.. _class_PrimitiveMesh_property_material:

- :ref:`Material<class_Material>` **material**

+----------+---------------------+
| *Setter* | set_material(value) |
+----------+---------------------+
| *Getter* | get_material()      |
+----------+---------------------+

The current :ref:`Material<class_Material>` of the primitive mesh.

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

.. _class_PrimitiveMesh_method__create_mesh_array:

- :ref:`Array<class_Array>` **_create_mesh_array** **(** **)** |virtual| |const|

----

.. _class_PrimitiveMesh_method_get_mesh_arrays:

- :ref:`Array<class_Array>` **get_mesh_arrays** **(** **)** |const|

Returns mesh arrays used to constitute surface of :ref:`Mesh<class_Mesh>`. The result can be passed to :ref:`ArrayMesh.add_surface_from_arrays<class_ArrayMesh_method_add_surface_from_arrays>` to create a new surface. For example:


.. tabs::

 .. code-tab:: gdscript

    var c = CylinderMesh.new()
    var arr_mesh = ArrayMesh.new()
    arr_mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, c.get_mesh_arrays())

 .. code-tab:: csharp

    var c = new CylinderMesh();
    var arrMesh = new ArrayMesh();
    arrMesh.AddSurfaceFromArrays(Mesh.PrimitiveType.Triangles, c.GetMeshArrays());



.. |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.)`