godot-docs/classes/class_csgmesh3d.rst

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.. _class_CSGMesh3D:

CSGMesh3D
=========

**Inherits:** :ref:`CSGPrimitive3D<class_CSGPrimitive3D>` **<** :ref:`CSGShape3D<class_CSGShape3D>` **<** :ref:`GeometryInstance3D<class_GeometryInstance3D>` **<** :ref:`VisualInstance3D<class_VisualInstance3D>` **<** :ref:`Node3D<class_Node3D>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

A CSG Mesh shape that uses a mesh resource.

.. rst-class:: classref-introduction-group

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

This CSG node allows you to use any mesh resource as a CSG shape, provided it is closed, does not self-intersect, does not contain internal faces and has no edges that connect to more than two faces. See also :ref:`CSGPolygon3D<class_CSGPolygon3D>` for drawing 2D extruded polygons to be used as CSG nodes.

\ **Note:** CSG nodes are intended to be used for level prototyping. Creating CSG nodes has a significant CPU cost compared to creating a :ref:`MeshInstance3D<class_MeshInstance3D>` with a :ref:`PrimitiveMesh<class_PrimitiveMesh>`. Moving a CSG node within another CSG node also has a significant CPU cost, so it should be avoided during gameplay.

.. rst-class:: classref-introduction-group

Tutorials
---------

- :doc:`Prototyping levels with CSG <../tutorials/3d/csg_tools>`

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Properties
----------

.. table::
   :widths: auto

   +---------------------------------+----------------------------------------------------+
   | :ref:`Material<class_Material>` | :ref:`material<class_CSGMesh3D_property_material>` |
   +---------------------------------+----------------------------------------------------+
   | :ref:`Mesh<class_Mesh>`         | :ref:`mesh<class_CSGMesh3D_property_mesh>`         |
   +---------------------------------+----------------------------------------------------+

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----

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

.. _class_CSGMesh3D_property_material:

.. rst-class:: classref-property

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

.. rst-class:: classref-property-setget

- void **set_material** **(** :ref:`Material<class_Material>` value **)**
- :ref:`Material<class_Material>` **get_material** **(** **)**

The :ref:`Material<class_Material>` used in drawing the CSG shape.

.. rst-class:: classref-item-separator

----

.. _class_CSGMesh3D_property_mesh:

.. rst-class:: classref-property

:ref:`Mesh<class_Mesh>` **mesh**

.. rst-class:: classref-property-setget

- void **set_mesh** **(** :ref:`Mesh<class_Mesh>` value **)**
- :ref:`Mesh<class_Mesh>` **get_mesh** **(** **)**

The :ref:`Mesh<class_Mesh>` resource to use as a CSG shape.

\ **Note:** When using an :ref:`ArrayMesh<class_ArrayMesh>`, all vertex attributes except :ref:`Mesh.ARRAY_VERTEX<class_Mesh_constant_ARRAY_VERTEX>`, :ref:`Mesh.ARRAY_NORMAL<class_Mesh_constant_ARRAY_NORMAL>` and :ref:`Mesh.ARRAY_TEX_UV<class_Mesh_constant_ARRAY_TEX_UV>` are left unused. Only :ref:`Mesh.ARRAY_VERTEX<class_Mesh_constant_ARRAY_VERTEX>` and :ref:`Mesh.ARRAY_TEX_UV<class_Mesh_constant_ARRAY_TEX_UV>` will be passed to the GPU.

\ :ref:`Mesh.ARRAY_NORMAL<class_Mesh_constant_ARRAY_NORMAL>` is only used to determine which faces require the use of flat shading. By default, CSGMesh will ignore the mesh's vertex normals, recalculate them for each vertex and use a smooth shader. If a flat shader is required for a face, ensure that all vertex normals of the face are approximately equal.

.. |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.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`