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479 lines
24 KiB
ReStructuredText
479 lines
24 KiB
ReStructuredText
:github_url: hide
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.. meta::
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:keywords: batch
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.. DO NOT EDIT THIS FILE!!!
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.. Generated automatically from Godot engine sources.
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.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
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.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/MultiMesh.xml.
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.. _class_MultiMesh:
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MultiMesh
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=========
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**继承：** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`
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使用 GPU 实例提供单一网格的高性能多次绘制。
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.. rst-class:: classref-introduction-group
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描述
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----
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MultiMesh 提供了低级别的网格实例化功能。绘制数以千计的 :ref:`MeshInstance3D<class_MeshInstance3D>` 节点可能会很慢，因为每个对象都要提交给 GPU 然后单独绘制。
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MultiMesh 要快得多，因为它可以通过一次绘制调用来绘制成千上万的实例，从而减少 API 的开销。
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缺点是，如果实例之间的距离太远，性能可能会降低，因为每一个实例总是会被渲染（对于整个对象，它们在空间上被索引为一个）。
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由于实例可能具有任何行为，因此用于可见性的 AABB 必须由用户提供。
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\ **注意：**\ MultiMesh 是单个对象，因此适用相同的对每个对象的最大灯光限制。这意味着，一旦最大灯光被一个或多个实例消耗了，其余的 MultiMesh 实例将\ **不会**\ 接收任何光照。
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\ **注意：**\ 在 MultiMesh 中使用的 Blend Shape 将被忽略。
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.. rst-class:: classref-introduction-group
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教程
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----
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- :doc:`使用 MultiMeshInstance <../tutorials/3d/using_multi_mesh_instance>`
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- :doc:`使用 MultiMesh 进行优化 <../tutorials/performance/using_multimesh>`
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- :doc:`使用 MultiMeshInstance 动画化数千条鱼 <../tutorials/performance/vertex_animation/animating_thousands_of_fish>`
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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:`PackedFloat32Array<class_PackedFloat32Array>` | :ref:`buffer<class_MultiMesh_property_buffer>` | ``PackedFloat32Array()`` |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`PackedColorArray<class_PackedColorArray>` | :ref:`color_array<class_MultiMesh_property_color_array>` | |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`AABB<class_AABB>` | :ref:`custom_aabb<class_MultiMesh_property_custom_aabb>` | ``AABB(0, 0, 0, 0, 0, 0)`` |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`PackedColorArray<class_PackedColorArray>` | :ref:`custom_data_array<class_MultiMesh_property_custom_data_array>` | |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`int<class_int>` | :ref:`instance_count<class_MultiMesh_property_instance_count>` | ``0`` |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`Mesh<class_Mesh>` | :ref:`mesh<class_MultiMesh_property_mesh>` | |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`transform_2d_array<class_MultiMesh_property_transform_2d_array>` | |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`PackedVector3Array<class_PackedVector3Array>` | :ref:`transform_array<class_MultiMesh_property_transform_array>` | |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`TransformFormat<enum_MultiMesh_TransformFormat>` | :ref:`transform_format<class_MultiMesh_property_transform_format>` | ``0`` |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`bool<class_bool>` | :ref:`use_colors<class_MultiMesh_property_use_colors>` | ``false`` |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`bool<class_bool>` | :ref:`use_custom_data<class_MultiMesh_property_use_custom_data>` | ``false`` |
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+--------------------------------------------------------+--------------------------------------------------------------------------------+----------------------------+
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| :ref:`int<class_int>` | :ref:`visible_instance_count<class_MultiMesh_property_visible_instance_count>` | ``-1`` |
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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:`AABB<class_AABB>` | :ref:`get_aabb<class_MultiMesh_method_get_aabb>`\ (\ ) |const| |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Color<class_Color>` | :ref:`get_instance_color<class_MultiMesh_method_get_instance_color>`\ (\ instance\: :ref:`int<class_int>`\ ) |const| |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Color<class_Color>` | :ref:`get_instance_custom_data<class_MultiMesh_method_get_instance_custom_data>`\ (\ instance\: :ref:`int<class_int>`\ ) |const| |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Transform3D<class_Transform3D>` | :ref:`get_instance_transform<class_MultiMesh_method_get_instance_transform>`\ (\ instance\: :ref:`int<class_int>`\ ) |const| |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`Transform2D<class_Transform2D>` | :ref:`get_instance_transform_2d<class_MultiMesh_method_get_instance_transform_2d>`\ (\ instance\: :ref:`int<class_int>`\ ) |const| |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| |void| | :ref:`set_instance_color<class_MultiMesh_method_set_instance_color>`\ (\ instance\: :ref:`int<class_int>`, color\: :ref:`Color<class_Color>`\ ) |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| |void| | :ref:`set_instance_custom_data<class_MultiMesh_method_set_instance_custom_data>`\ (\ instance\: :ref:`int<class_int>`, custom_data\: :ref:`Color<class_Color>`\ ) |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| |void| | :ref:`set_instance_transform<class_MultiMesh_method_set_instance_transform>`\ (\ instance\: :ref:`int<class_int>`, transform\: :ref:`Transform3D<class_Transform3D>`\ ) |
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+---------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| |void| | :ref:`set_instance_transform_2d<class_MultiMesh_method_set_instance_transform_2d>`\ (\ instance\: :ref:`int<class_int>`, transform\: :ref:`Transform2D<class_Transform2D>`\ ) |
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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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枚举
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----
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.. _enum_MultiMesh_TransformFormat:
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.. rst-class:: classref-enumeration
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enum **TransformFormat**: :ref:`🔗<enum_MultiMesh_TransformFormat>`
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.. _class_MultiMesh_constant_TRANSFORM_2D:
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.. rst-class:: classref-enumeration-constant
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:ref:`TransformFormat<enum_MultiMesh_TransformFormat>` **TRANSFORM_2D** = ``0``
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使用 2D 变换时使用此选项。
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.. _class_MultiMesh_constant_TRANSFORM_3D:
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.. rst-class:: classref-enumeration-constant
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:ref:`TransformFormat<enum_MultiMesh_TransformFormat>` **TRANSFORM_3D** = ``1``
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使用 3D 变换时使用此选项。
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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_MultiMesh_property_buffer:
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.. rst-class:: classref-property
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:ref:`PackedFloat32Array<class_PackedFloat32Array>` **buffer** = ``PackedFloat32Array()`` :ref:`🔗<class_MultiMesh_property_buffer>`
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.. rst-class:: classref-property-setget
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- |void| **set_buffer**\ (\ value\: :ref:`PackedFloat32Array<class_PackedFloat32Array>`\ )
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- :ref:`PackedFloat32Array<class_PackedFloat32Array>` **get_buffer**\ (\ )
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.. container:: contribute
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该属性目前没有描述，请帮我们\ :ref:`贡献一个 <doc_updating_the_class_reference>`\ 吧！
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_color_array:
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.. rst-class:: classref-property
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:ref:`PackedColorArray<class_PackedColorArray>` **color_array** :ref:`🔗<class_MultiMesh_property_color_array>`
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**已弃用：** Accessing this property is very slow. Use :ref:`set_instance_color<class_MultiMesh_method_set_instance_color>` and :ref:`get_instance_color<class_MultiMesh_method_get_instance_color>` instead.
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包含该网格所有实例使用的每种 :ref:`Color<class_Color>` 的数组。
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**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedColorArray<class_PackedColorArray>` for more details.
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_custom_aabb:
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.. rst-class:: classref-property
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:ref:`AABB<class_AABB>` **custom_aabb** = ``AABB(0, 0, 0, 0, 0, 0)`` :ref:`🔗<class_MultiMesh_property_custom_aabb>`
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.. rst-class:: classref-property-setget
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- |void| **set_custom_aabb**\ (\ value\: :ref:`AABB<class_AABB>`\ )
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- :ref:`AABB<class_AABB>` **get_custom_aabb**\ (\ )
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为该 MultiMesh 资源自定义 AABB。手动设置该项可以防止高昂的运行时 AABB 重新计算成本。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_custom_data_array:
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.. rst-class:: classref-property
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:ref:`PackedColorArray<class_PackedColorArray>` **custom_data_array** :ref:`🔗<class_MultiMesh_property_custom_data_array>`
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**已弃用：** Accessing this property is very slow. Use :ref:`set_instance_custom_data<class_MultiMesh_method_set_instance_custom_data>` and :ref:`get_instance_custom_data<class_MultiMesh_method_get_instance_custom_data>` instead.
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包含该网格的所有实例所使用的每个自定义数据值的数组，作为 :ref:`PackedColorArray<class_PackedColorArray>`\ 。
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**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedColorArray<class_PackedColorArray>` for more details.
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_instance_count:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **instance_count** = ``0`` :ref:`🔗<class_MultiMesh_property_instance_count>`
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.. rst-class:: classref-property-setget
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- |void| **set_instance_count**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_instance_count**\ (\ )
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将被绘制的实例数。这会清除缓冲区，并（重新）调整其大小。之后设置的数据格式或标志将无效。
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默认情况下，所有实例都会被绘制，但可以使用 :ref:`visible_instance_count<class_MultiMesh_property_visible_instance_count>` 来限制它。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_mesh:
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.. rst-class:: classref-property
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:ref:`Mesh<class_Mesh>` **mesh** :ref:`🔗<class_MultiMesh_property_mesh>`
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.. rst-class:: classref-property-setget
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- |void| **set_mesh**\ (\ value\: :ref:`Mesh<class_Mesh>`\ )
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- :ref:`Mesh<class_Mesh>` **get_mesh**\ (\ )
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要被实例化的 :ref:`Mesh<class_Mesh>` 资源。
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各个实例的外观可以通过 :ref:`set_instance_color<class_MultiMesh_method_set_instance_color>` 和 :ref:`set_instance_custom_data<class_MultiMesh_method_set_instance_custom_data>` 来修改。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_transform_2d_array:
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.. rst-class:: classref-property
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:ref:`PackedVector2Array<class_PackedVector2Array>` **transform_2d_array** :ref:`🔗<class_MultiMesh_property_transform_2d_array>`
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**已弃用：** Accessing this property is very slow. Use :ref:`set_instance_transform_2d<class_MultiMesh_method_set_instance_transform_2d>` and :ref:`get_instance_transform_2d<class_MultiMesh_method_get_instance_transform_2d>` instead.
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包含该网格的所有实例所使用的每个 :ref:`Transform2D<class_Transform2D>` 值的数组，作为 :ref:`PackedVector2Array<class_PackedVector2Array>`\ 。每个变换被分为 3 个 :ref:`Vector2<class_Vector2>` 值，分别对应于变换的 ``x``\ 、\ ``y`` 和 ``origin``\ 。
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**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedVector2Array<class_PackedVector2Array>` for more details.
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_transform_array:
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.. rst-class:: classref-property
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:ref:`PackedVector3Array<class_PackedVector3Array>` **transform_array** :ref:`🔗<class_MultiMesh_property_transform_array>`
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**已弃用：** Accessing this property is very slow. Use :ref:`set_instance_transform<class_MultiMesh_method_set_instance_transform>` and :ref:`get_instance_transform<class_MultiMesh_method_get_instance_transform>` instead.
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包含该网格的所有实例所使用的每个 :ref:`Transform3D<class_Transform3D>` 值的数组，作为 :ref:`PackedVector3Array<class_PackedVector3Array>`\ 。每个变换被分为 4 个 :ref:`Vector3<class_Vector3>` 值，分别对应于变换的 ``x``\ 、\ ``y``\ 、\ ``z`` 和 ``origin``\ 。
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**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedVector3Array<class_PackedVector3Array>` for more details.
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_transform_format:
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.. rst-class:: classref-property
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:ref:`TransformFormat<enum_MultiMesh_TransformFormat>` **transform_format** = ``0`` :ref:`🔗<class_MultiMesh_property_transform_format>`
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.. rst-class:: classref-property-setget
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- |void| **set_transform_format**\ (\ value\: :ref:`TransformFormat<enum_MultiMesh_TransformFormat>`\ )
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- :ref:`TransformFormat<enum_MultiMesh_TransformFormat>` **get_transform_format**\ (\ )
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用于变换网格的变换格式，可以是 2D 或 3D。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_use_colors:
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.. rst-class:: classref-property
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:ref:`bool<class_bool>` **use_colors** = ``false`` :ref:`🔗<class_MultiMesh_property_use_colors>`
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.. rst-class:: classref-property-setget
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- |void| **set_use_colors**\ (\ value\: :ref:`bool<class_bool>`\ )
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- :ref:`bool<class_bool>` **is_using_colors**\ (\ )
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如果为 ``true``\ ，则该 **MultiMesh** 将使用颜色数据（参见 :ref:`set_instance_color<class_MultiMesh_method_set_instance_color>`\ ）。只有在 :ref:`instance_count<class_MultiMesh_property_instance_count>` 为 ``0`` 或更少时才能被设置。这意味着需要在设置实例计数之前调用该方法，或者暂时将实例计数重置为 ``0``\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_use_custom_data:
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.. rst-class:: classref-property
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:ref:`bool<class_bool>` **use_custom_data** = ``false`` :ref:`🔗<class_MultiMesh_property_use_custom_data>`
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.. rst-class:: classref-property-setget
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- |void| **set_use_custom_data**\ (\ value\: :ref:`bool<class_bool>`\ )
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- :ref:`bool<class_bool>` **is_using_custom_data**\ (\ )
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如果为 ``true``\ ，则该 **MultiMesh** 将使用自定义数据（参见 :ref:`set_instance_custom_data<class_MultiMesh_method_set_instance_custom_data>`\ ）。只有在 :ref:`instance_count<class_MultiMesh_property_instance_count>` 为 ``0`` 或更少时才能被设置。这意味着需要在设置实例计数之前调用该方法，或者暂时将实例计数重置为 ``0``\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_property_visible_instance_count:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **visible_instance_count** = ``-1`` :ref:`🔗<class_MultiMesh_property_visible_instance_count>`
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.. rst-class:: classref-property-setget
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- |void| **set_visible_instance_count**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_visible_instance_count**\ (\ )
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限制绘制的实例数量，-1 会绘制所有的实例。改变这一点并不改变缓冲区的大小。
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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_MultiMesh_method_get_aabb:
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.. rst-class:: classref-method
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:ref:`AABB<class_AABB>` **get_aabb**\ (\ ) |const| :ref:`🔗<class_MultiMesh_method_get_aabb>`
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返回局部空间中的可见性轴对齐包围框。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_get_instance_color:
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.. rst-class:: classref-method
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:ref:`Color<class_Color>` **get_instance_color**\ (\ instance\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_MultiMesh_method_get_instance_color>`
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获取特定实例的颜色倍数。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_get_instance_custom_data:
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.. rst-class:: classref-method
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:ref:`Color<class_Color>` **get_instance_custom_data**\ (\ instance\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_MultiMesh_method_get_instance_custom_data>`
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返回已经为特定实例设置的自定义数据。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_get_instance_transform:
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.. rst-class:: classref-method
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:ref:`Transform3D<class_Transform3D>` **get_instance_transform**\ (\ instance\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_MultiMesh_method_get_instance_transform>`
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返回指定实例的 :ref:`Transform3D<class_Transform3D>`\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_get_instance_transform_2d:
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.. rst-class:: classref-method
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:ref:`Transform2D<class_Transform2D>` **get_instance_transform_2d**\ (\ instance\: :ref:`int<class_int>`\ ) |const| :ref:`🔗<class_MultiMesh_method_get_instance_transform_2d>`
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返回指定实例的 :ref:`Transform2D<class_Transform2D>`\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_set_instance_color:
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.. rst-class:: classref-method
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|void| **set_instance_color**\ (\ instance\: :ref:`int<class_int>`, color\: :ref:`Color<class_Color>`\ ) :ref:`🔗<class_MultiMesh_method_set_instance_color>`
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设置一个特定实例的颜色，通过\ *乘以*\ 该网格的现有顶点颜色来设置。这允许每个实例使用不同的颜色。
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要使颜色生效，请确保该 **MultiMesh** 上的 :ref:`use_colors<class_MultiMesh_property_use_colors>` 为 ``true``\ ，并且材质上的 :ref:`BaseMaterial3D.vertex_color_use_as_albedo<class_BaseMaterial3D_property_vertex_color_use_as_albedo>` 为 ``true``\ 。如果打算设置绝对颜色而不是着色，请确保材质的反照率颜色被设置为纯白色 (``Color(1, 1, 1)``)。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_set_instance_custom_data:
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.. rst-class:: classref-method
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|void| **set_instance_custom_data**\ (\ instance\: :ref:`int<class_int>`, custom_data\: :ref:`Color<class_Color>`\ ) :ref:`🔗<class_MultiMesh_method_set_instance_custom_data>`
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为特定的实例设置自定义数据。\ ``custom_data`` 是一个 :ref:`Color<class_Color>` 类型，仅为了包含 4 个浮点数。
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对于要使用的自定义数据，请确保 :ref:`use_custom_data<class_MultiMesh_property_use_custom_data>` 为 ``true``\ 。
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必须使用 ``INSTANCE_CUSTOM`` 在自定义着色器中，手动访问该自定义实例数据。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_set_instance_transform:
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.. rst-class:: classref-method
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|void| **set_instance_transform**\ (\ instance\: :ref:`int<class_int>`, transform\: :ref:`Transform3D<class_Transform3D>`\ ) :ref:`🔗<class_MultiMesh_method_set_instance_transform>`
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为指定实例设置 :ref:`Transform3D<class_Transform3D>`\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_MultiMesh_method_set_instance_transform_2d:
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.. rst-class:: classref-method
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|void| **set_instance_transform_2d**\ (\ instance\: :ref:`int<class_int>`, transform\: :ref:`Transform2D<class_Transform2D>`\ ) :ref:`🔗<class_MultiMesh_method_set_instance_transform_2d>`
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为指定实例设置 :ref:`Transform2D<class_Transform2D>`\ 。
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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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.. |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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