godot-docs/classes/class_shapecast3d.rst

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.. _class_ShapeCast3D:

ShapeCast3D
===========

**Inherits:** :ref:`Node3D<class_Node3D>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`

A 3D shape that sweeps a region of space to detect :ref:`CollisionObject3D<class_CollisionObject3D>`\ s.

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

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

Shape casting allows to detect collision objects by sweeping its :ref:`shape<class_ShapeCast3D_property_shape>` along the cast direction determined by :ref:`target_position<class_ShapeCast3D_property_target_position>`. This is similar to :ref:`RayCast3D<class_RayCast3D>`, but it allows for sweeping a region of space, rather than just a straight line. **ShapeCast3D** can detect multiple collision objects. It is useful for things like wide laser beams or snapping a simple shape to a floor.

Immediate collision overlaps can be done with the :ref:`target_position<class_ShapeCast3D_property_target_position>` set to ``Vector3(0, 0, 0)`` and by calling :ref:`force_shapecast_update<class_ShapeCast3D_method_force_shapecast_update>` within the same physics frame. This helps to overcome some limitations of :ref:`Area3D<class_Area3D>` when used as an instantaneous detection area, as collision information isn't immediately available to it.

\ **Note:** Shape casting is more computationally expensive than ray casting.

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Properties
----------

.. table::
   :widths: auto

   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`collide_with_areas<class_ShapeCast3D_property_collide_with_areas>`             | ``false``             |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`collide_with_bodies<class_ShapeCast3D_property_collide_with_bodies>`           | ``true``              |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`int<class_int>`         | :ref:`collision_mask<class_ShapeCast3D_property_collision_mask>`                     | ``1``                 |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Array<class_Array>`     | :ref:`collision_result<class_ShapeCast3D_property_collision_result>`                 | ``[]``                |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Color<class_Color>`     | :ref:`debug_shape_custom_color<class_ShapeCast3D_property_debug_shape_custom_color>` | ``Color(0, 0, 0, 1)`` |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`enabled<class_ShapeCast3D_property_enabled>`                                   | ``true``              |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`bool<class_bool>`       | :ref:`exclude_parent<class_ShapeCast3D_property_exclude_parent>`                     | ``true``              |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`float<class_float>`     | :ref:`margin<class_ShapeCast3D_property_margin>`                                     | ``0.0``               |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`int<class_int>`         | :ref:`max_results<class_ShapeCast3D_property_max_results>`                           | ``32``                |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Shape3D<class_Shape3D>` | :ref:`shape<class_ShapeCast3D_property_shape>`                                       |                       |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+
   | :ref:`Vector3<class_Vector3>` | :ref:`target_position<class_ShapeCast3D_property_target_position>`                   | ``Vector3(0, -1, 0)`` |
   +-------------------------------+--------------------------------------------------------------------------------------+-----------------------+

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Methods
-------

.. table::
   :widths: auto

   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`add_exception<class_ShapeCast3D_method_add_exception>`\ (\ node\: :ref:`CollisionObject3D<class_CollisionObject3D>`\ )                                    |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`add_exception_rid<class_ShapeCast3D_method_add_exception_rid>`\ (\ rid\: :ref:`RID<class_RID>`\ )                                                         |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`clear_exceptions<class_ShapeCast3D_method_clear_exceptions>`\ (\ )                                                                                        |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`force_shapecast_update<class_ShapeCast3D_method_force_shapecast_update>`\ (\ )                                                                            |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`     | :ref:`get_closest_collision_safe_fraction<class_ShapeCast3D_method_get_closest_collision_safe_fraction>`\ (\ ) |const|                                          |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`float<class_float>`     | :ref:`get_closest_collision_unsafe_fraction<class_ShapeCast3D_method_get_closest_collision_unsafe_fraction>`\ (\ ) |const|                                      |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Object<class_Object>`   | :ref:`get_collider<class_ShapeCast3D_method_get_collider>`\ (\ index\: :ref:`int<class_int>`\ ) |const|                                                         |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`         | :ref:`get_collider_rid<class_ShapeCast3D_method_get_collider_rid>`\ (\ index\: :ref:`int<class_int>`\ ) |const|                                                 |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`         | :ref:`get_collider_shape<class_ShapeCast3D_method_get_collider_shape>`\ (\ index\: :ref:`int<class_int>`\ ) |const|                                             |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`         | :ref:`get_collision_count<class_ShapeCast3D_method_get_collision_count>`\ (\ ) |const|                                                                          |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`get_collision_mask_value<class_ShapeCast3D_method_get_collision_mask_value>`\ (\ layer_number\: :ref:`int<class_int>`\ ) |const|                          |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector3<class_Vector3>` | :ref:`get_collision_normal<class_ShapeCast3D_method_get_collision_normal>`\ (\ index\: :ref:`int<class_int>`\ ) |const|                                         |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector3<class_Vector3>` | :ref:`get_collision_point<class_ShapeCast3D_method_get_collision_point>`\ (\ index\: :ref:`int<class_int>`\ ) |const|                                           |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`       | :ref:`is_colliding<class_ShapeCast3D_method_is_colliding>`\ (\ ) |const|                                                                                        |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`remove_exception<class_ShapeCast3D_method_remove_exception>`\ (\ node\: :ref:`CollisionObject3D<class_CollisionObject3D>`\ )                              |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`remove_exception_rid<class_ShapeCast3D_method_remove_exception_rid>`\ (\ rid\: :ref:`RID<class_RID>`\ )                                                   |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`resource_changed<class_ShapeCast3D_method_resource_changed>`\ (\ resource\: :ref:`Resource<class_Resource>`\ )                                            |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                        | :ref:`set_collision_mask_value<class_ShapeCast3D_method_set_collision_mask_value>`\ (\ layer_number\: :ref:`int<class_int>`, value\: :ref:`bool<class_bool>`\ ) |
   +-------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------+

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.. rst-class:: classref-descriptions-group

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

.. _class_ShapeCast3D_property_collide_with_areas:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **collide_with_areas** = ``false`` :ref:`🔗<class_ShapeCast3D_property_collide_with_areas>`

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

- |void| **set_collide_with_areas**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **is_collide_with_areas_enabled**\ (\ )

If ``true``, collisions with :ref:`Area3D<class_Area3D>`\ s will be reported.

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.. _class_ShapeCast3D_property_collide_with_bodies:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **collide_with_bodies** = ``true`` :ref:`🔗<class_ShapeCast3D_property_collide_with_bodies>`

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

- |void| **set_collide_with_bodies**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **is_collide_with_bodies_enabled**\ (\ )

If ``true``, collisions with :ref:`PhysicsBody3D<class_PhysicsBody3D>`\ s will be reported.

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.. _class_ShapeCast3D_property_collision_mask:

.. rst-class:: classref-property

:ref:`int<class_int>` **collision_mask** = ``1`` :ref:`🔗<class_ShapeCast3D_property_collision_mask>`

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

- |void| **set_collision_mask**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_collision_mask**\ (\ )

The shape's collision mask. Only objects in at least one collision layer enabled in the mask will be detected. See `Collision layers and masks <../tutorials/physics/physics_introduction.html#collision-layers-and-masks>`__ in the documentation for more information.

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.. _class_ShapeCast3D_property_collision_result:

.. rst-class:: classref-property

:ref:`Array<class_Array>` **collision_result** = ``[]`` :ref:`🔗<class_ShapeCast3D_property_collision_result>`

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

- :ref:`Array<class_Array>` **get_collision_result**\ (\ )

Returns the complete collision information from the collision sweep. The data returned is the same as in the :ref:`PhysicsDirectSpaceState3D.get_rest_info<class_PhysicsDirectSpaceState3D_method_get_rest_info>` method.

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.. _class_ShapeCast3D_property_debug_shape_custom_color:

.. rst-class:: classref-property

:ref:`Color<class_Color>` **debug_shape_custom_color** = ``Color(0, 0, 0, 1)`` :ref:`🔗<class_ShapeCast3D_property_debug_shape_custom_color>`

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

- |void| **set_debug_shape_custom_color**\ (\ value\: :ref:`Color<class_Color>`\ )
- :ref:`Color<class_Color>` **get_debug_shape_custom_color**\ (\ )

The custom color to use to draw the shape in the editor and at run-time if **Visible Collision Shapes** is enabled in the **Debug** menu. This color will be highlighted at run-time if the **ShapeCast3D** is colliding with something.

If set to ``Color(0.0, 0.0, 0.0)`` (by default), the color set in :ref:`ProjectSettings.debug/shapes/collision/shape_color<class_ProjectSettings_property_debug/shapes/collision/shape_color>` is used.

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.. _class_ShapeCast3D_property_enabled:

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:ref:`bool<class_bool>` **enabled** = ``true`` :ref:`🔗<class_ShapeCast3D_property_enabled>`

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

- |void| **set_enabled**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **is_enabled**\ (\ )

If ``true``, collisions will be reported.

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.. _class_ShapeCast3D_property_exclude_parent:

.. rst-class:: classref-property

:ref:`bool<class_bool>` **exclude_parent** = ``true`` :ref:`🔗<class_ShapeCast3D_property_exclude_parent>`

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

- |void| **set_exclude_parent_body**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_exclude_parent_body**\ (\ )

If ``true``, the parent node will be excluded from collision detection.

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

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.. _class_ShapeCast3D_property_margin:

.. rst-class:: classref-property

:ref:`float<class_float>` **margin** = ``0.0`` :ref:`🔗<class_ShapeCast3D_property_margin>`

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

- |void| **set_margin**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_margin**\ (\ )

The collision margin for the shape. A larger margin helps detecting collisions more consistently, at the cost of precision.

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

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.. _class_ShapeCast3D_property_max_results:

.. rst-class:: classref-property

:ref:`int<class_int>` **max_results** = ``32`` :ref:`🔗<class_ShapeCast3D_property_max_results>`

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

- |void| **set_max_results**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_max_results**\ (\ )

The number of intersections can be limited with this parameter, to reduce the processing time.

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.. _class_ShapeCast3D_property_shape:

.. rst-class:: classref-property

:ref:`Shape3D<class_Shape3D>` **shape** :ref:`🔗<class_ShapeCast3D_property_shape>`

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

- |void| **set_shape**\ (\ value\: :ref:`Shape3D<class_Shape3D>`\ )
- :ref:`Shape3D<class_Shape3D>` **get_shape**\ (\ )

The shape to be used for collision queries.

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

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.. _class_ShapeCast3D_property_target_position:

.. rst-class:: classref-property

:ref:`Vector3<class_Vector3>` **target_position** = ``Vector3(0, -1, 0)`` :ref:`🔗<class_ShapeCast3D_property_target_position>`

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

- |void| **set_target_position**\ (\ value\: :ref:`Vector3<class_Vector3>`\ )
- :ref:`Vector3<class_Vector3>` **get_target_position**\ (\ )

The shape's destination point, relative to this node's :ref:`Node3D.position<class_Node3D_property_position>`.

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.. rst-class:: classref-descriptions-group

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

.. _class_ShapeCast3D_method_add_exception:

.. rst-class:: classref-method

|void| **add_exception**\ (\ node\: :ref:`CollisionObject3D<class_CollisionObject3D>`\ ) :ref:`🔗<class_ShapeCast3D_method_add_exception>`

Adds a collision exception so the shape does not report collisions with the specified node.

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.. _class_ShapeCast3D_method_add_exception_rid:

.. rst-class:: classref-method

|void| **add_exception_rid**\ (\ rid\: :ref:`RID<class_RID>`\ ) :ref:`🔗<class_ShapeCast3D_method_add_exception_rid>`

Adds a collision exception so the shape does not report collisions with the specified :ref:`RID<class_RID>`.

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

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.. _class_ShapeCast3D_method_clear_exceptions:

.. rst-class:: classref-method

|void| **clear_exceptions**\ (\ ) :ref:`🔗<class_ShapeCast3D_method_clear_exceptions>`

Removes all collision exceptions for this shape.

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

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.. _class_ShapeCast3D_method_force_shapecast_update:

.. rst-class:: classref-method

|void| **force_shapecast_update**\ (\ ) :ref:`🔗<class_ShapeCast3D_method_force_shapecast_update>`

Updates the collision information for the shape immediately, without waiting for the next ``_physics_process`` call. Use this method, for example, when the shape or its parent has changed state.

\ **Note:** Setting :ref:`enabled<class_ShapeCast3D_property_enabled>` to ``true`` is not required for this to work.

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

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.. _class_ShapeCast3D_method_get_closest_collision_safe_fraction:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_closest_collision_safe_fraction**\ (\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_closest_collision_safe_fraction>`

Returns the fraction from this cast's origin to its :ref:`target_position<class_ShapeCast3D_property_target_position>` of how far the shape can move without triggering a collision, as a value between ``0.0`` and ``1.0``.

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

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.. _class_ShapeCast3D_method_get_closest_collision_unsafe_fraction:

.. rst-class:: classref-method

:ref:`float<class_float>` **get_closest_collision_unsafe_fraction**\ (\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_closest_collision_unsafe_fraction>`

Returns the fraction from this cast's origin to its :ref:`target_position<class_ShapeCast3D_property_target_position>` of how far the shape must move to trigger a collision, as a value between ``0.0`` and ``1.0``.

In ideal conditions this would be the same as :ref:`get_closest_collision_safe_fraction<class_ShapeCast3D_method_get_closest_collision_safe_fraction>`, however shape casting is calculated in discrete steps, so the precise point of collision can occur between two calculated positions.

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.. _class_ShapeCast3D_method_get_collider:

.. rst-class:: classref-method

:ref:`Object<class_Object>` **get_collider**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collider>`

Returns the collided :ref:`Object<class_Object>` of one of the multiple collisions at ``index``, or ``null`` if no object is intersecting the shape (i.e. :ref:`is_colliding<class_ShapeCast3D_method_is_colliding>` returns ``false``).

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.. _class_ShapeCast3D_method_get_collider_rid:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **get_collider_rid**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collider_rid>`

Returns the :ref:`RID<class_RID>` of the collided object of one of the multiple collisions at ``index``.

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

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.. _class_ShapeCast3D_method_get_collider_shape:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_collider_shape**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collider_shape>`

Returns the shape ID of the colliding shape of one of the multiple collisions at ``index``, or ``0`` if no object is intersecting the shape (i.e. :ref:`is_colliding<class_ShapeCast3D_method_is_colliding>` returns ``false``).

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.. _class_ShapeCast3D_method_get_collision_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_collision_count**\ (\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collision_count>`

The number of collisions detected at the point of impact. Use this to iterate over multiple collisions as provided by :ref:`get_collider<class_ShapeCast3D_method_get_collider>`, :ref:`get_collider_shape<class_ShapeCast3D_method_get_collider_shape>`, :ref:`get_collision_point<class_ShapeCast3D_method_get_collision_point>`, and :ref:`get_collision_normal<class_ShapeCast3D_method_get_collision_normal>` methods.

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.. _class_ShapeCast3D_method_get_collision_mask_value:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **get_collision_mask_value**\ (\ layer_number\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collision_mask_value>`

Returns whether or not the specified layer of the :ref:`collision_mask<class_ShapeCast3D_property_collision_mask>` is enabled, given a ``layer_number`` between 1 and 32.

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.. _class_ShapeCast3D_method_get_collision_normal:

.. rst-class:: classref-method

:ref:`Vector3<class_Vector3>` **get_collision_normal**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collision_normal>`

Returns the normal of one of the multiple collisions at ``index`` of the intersecting object.

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.. _class_ShapeCast3D_method_get_collision_point:

.. rst-class:: classref-method

:ref:`Vector3<class_Vector3>` **get_collision_point**\ (\ index\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_ShapeCast3D_method_get_collision_point>`

Returns the collision point of one of the multiple collisions at ``index`` where the shape intersects the colliding object.

\ **Note:** This point is in the **global** coordinate system.

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.. _class_ShapeCast3D_method_is_colliding:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_colliding**\ (\ ) |const| :ref:`🔗<class_ShapeCast3D_method_is_colliding>`

Returns whether any object is intersecting with the shape's vector (considering the vector length).

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.. _class_ShapeCast3D_method_remove_exception:

.. rst-class:: classref-method

|void| **remove_exception**\ (\ node\: :ref:`CollisionObject3D<class_CollisionObject3D>`\ ) :ref:`🔗<class_ShapeCast3D_method_remove_exception>`

Removes a collision exception so the shape does report collisions with the specified node.

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.. _class_ShapeCast3D_method_remove_exception_rid:

.. rst-class:: classref-method

|void| **remove_exception_rid**\ (\ rid\: :ref:`RID<class_RID>`\ ) :ref:`🔗<class_ShapeCast3D_method_remove_exception_rid>`

Removes a collision exception so the shape does report collisions with the specified :ref:`RID<class_RID>`.

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.. _class_ShapeCast3D_method_resource_changed:

.. rst-class:: classref-method

|void| **resource_changed**\ (\ resource\: :ref:`Resource<class_Resource>`\ ) :ref:`🔗<class_ShapeCast3D_method_resource_changed>`

**Deprecated:** Use :ref:`Resource.changed<class_Resource_signal_changed>` instead.

This method does nothing.

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.. _class_ShapeCast3D_method_set_collision_mask_value:

.. rst-class:: classref-method

|void| **set_collision_mask_value**\ (\ layer_number\: :ref:`int<class_int>`, value\: :ref:`bool<class_bool>`\ ) :ref:`🔗<class_ShapeCast3D_method_set_collision_mask_value>`

Based on ``value``, enables or disables the specified layer in the :ref:`collision_mask<class_ShapeCast3D_property_collision_mask>`, given a ``layer_number`` between 1 and 32.

.. |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.)`
.. |void| replace:: :abbr:`void (No return value.)`