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152 lines
5.9 KiB
ReStructuredText
152 lines
5.9 KiB
ReStructuredText
:github_url: hide
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.. _class_Joint2D:
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Joint2D
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=======
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**继承：** :ref:`Node2D<class_Node2D>` **<** :ref:`CanvasItem<class_CanvasItem>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
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**派生：** :ref:`DampedSpringJoint2D<class_DampedSpringJoint2D>`, :ref:`GrooveJoint2D<class_GrooveJoint2D>`, :ref:`PinJoint2D<class_PinJoint2D>`
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所有 2D 物理关节的抽象基类。
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.. rst-class:: classref-introduction-group
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描述
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----
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2D 物理中所有关节的抽象基类。2D 关节能够将两个物理体（\ :ref:`node_a<class_Joint2D_property_node_a>` 和 :ref:`node_b<class_Joint2D_property_node_b>`\ ）绑定在一起并施加约束。
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.. rst-class:: classref-reftable-group
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属性
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----
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.. table::
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:widths: auto
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+---------------------------------+--------------------------------------------------------------------+------------------+
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| :ref:`float<class_float>` | :ref:`bias<class_Joint2D_property_bias>` | ``0.0`` |
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+---------------------------------+--------------------------------------------------------------------+------------------+
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| :ref:`bool<class_bool>` | :ref:`disable_collision<class_Joint2D_property_disable_collision>` | ``true`` |
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+---------------------------------+--------------------------------------------------------------------+------------------+
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| :ref:`NodePath<class_NodePath>` | :ref:`node_a<class_Joint2D_property_node_a>` | ``NodePath("")`` |
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+---------------------------------+--------------------------------------------------------------------+------------------+
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| :ref:`NodePath<class_NodePath>` | :ref:`node_b<class_Joint2D_property_node_b>` | ``NodePath("")`` |
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+---------------------------------+--------------------------------------------------------------------+------------------+
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.. rst-class:: classref-reftable-group
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方法
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----
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.. table::
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:widths: auto
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+-----------------------+------------------------------------------------------------+
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| :ref:`RID<class_RID>` | :ref:`get_rid<class_Joint2D_method_get_rid>`\ (\ ) |const| |
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+-----------------------+------------------------------------------------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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属性说明
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--------
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.. _class_Joint2D_property_bias:
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.. rst-class:: classref-property
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:ref:`float<class_float>` **bias** = ``0.0`` :ref:`🔗<class_Joint2D_property_bias>`
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.. rst-class:: classref-property-setget
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- |void| **set_bias**\ (\ value\: :ref:`float<class_float>`\ )
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- :ref:`float<class_float>` **get_bias**\ (\ )
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当 :ref:`node_a<class_Joint2D_property_node_a>` 和 :ref:`node_b<class_Joint2D_property_node_b>` 向不同方向移动时，\ :ref:`bias<class_Joint2D_property_bias>` 控制关节将它们拉回到原始位置的速度。\ :ref:`bias<class_Joint2D_property_bias>` 越低，两个实体对该关节的拉力就越大。
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当被设置为 ``0`` 时，使用来自 :ref:`ProjectSettings.physics/2d/solver/default_constraint_bias<class_ProjectSettings_property_physics/2d/solver/default_constraint_bias>` 的默认值。
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.. rst-class:: classref-item-separator
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----
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.. _class_Joint2D_property_disable_collision:
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.. rst-class:: classref-property
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:ref:`bool<class_bool>` **disable_collision** = ``true`` :ref:`🔗<class_Joint2D_property_disable_collision>`
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.. rst-class:: classref-property-setget
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- |void| **set_exclude_nodes_from_collision**\ (\ value\: :ref:`bool<class_bool>`\ )
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- :ref:`bool<class_bool>` **get_exclude_nodes_from_collision**\ (\ )
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如果为 ``true``\ ，则绑定在一起的两个物体不会相互碰撞。
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.. rst-class:: classref-item-separator
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----
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.. _class_Joint2D_property_node_a:
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.. rst-class:: classref-property
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:ref:`NodePath<class_NodePath>` **node_a** = ``NodePath("")`` :ref:`🔗<class_Joint2D_property_node_a>`
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.. rst-class:: classref-property-setget
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- |void| **set_node_a**\ (\ value\: :ref:`NodePath<class_NodePath>`\ )
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- :ref:`NodePath<class_NodePath>` **get_node_a**\ (\ )
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连接到关节的第一个物体（A）的路径。该节点必须继承自 :ref:`PhysicsBody2D<class_PhysicsBody2D>`\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_Joint2D_property_node_b:
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.. rst-class:: classref-property
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:ref:`NodePath<class_NodePath>` **node_b** = ``NodePath("")`` :ref:`🔗<class_Joint2D_property_node_b>`
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.. rst-class:: classref-property-setget
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- |void| **set_node_b**\ (\ value\: :ref:`NodePath<class_NodePath>`\ )
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- :ref:`NodePath<class_NodePath>` **get_node_b**\ (\ )
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连接到关节的第二个物体（B）的路径。该节点必须继承自 :ref:`PhysicsBody2D<class_PhysicsBody2D>`\ 。
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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方法说明
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--------
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.. _class_Joint2D_method_get_rid:
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.. rst-class:: classref-method
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:ref:`RID<class_RID>` **get_rid**\ (\ ) |const| :ref:`🔗<class_Joint2D_method_get_rid>`
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从 :ref:`PhysicsServer2D<class_PhysicsServer2D>` 返回关节的内部 :ref:`RID<class_RID>`\ 。
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.. |virtual| replace:: :abbr:`virtual (本方法通常需要用户覆盖才能生效。)`
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.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
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.. |const| replace:: :abbr:`const (本方法无副作用，不会修改该实例的任何成员变量。)`
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.. |vararg| replace:: :abbr:`vararg (本方法除了能接受在此处描述的参数外，还能够继续接受任意数量的参数。)`
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.. |constructor| replace:: :abbr:`constructor (本方法用于构造某个类型。)`
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.. |static| replace:: :abbr:`static (调用本方法无需实例，可直接使用类名进行调用。)`
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.. |operator| replace:: :abbr:`operator (本方法描述的是使用本类型作为左操作数的有效运算符。)`
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.. |bitfield| replace:: :abbr:`BitField (这个值是由下列位标志构成位掩码的整数。)`
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.. |void| replace:: :abbr:`void (无返回值。)`
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