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godot-docs-l10n/classes/zh_CN/class_cpuparticles2d.rst

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.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/CPUParticles2D.xml.
.. _class_CPUParticles2D:
CPUParticles2D
==============
**继承：** :ref:`Node2D<class_Node2D>` **<** :ref:`CanvasItem<class_CanvasItem>` **<** :ref:`Node<class_Node>` **<** :ref:`Object<class_Object>`
基于 CPU 的 2D 粒子发射器。
.. rst-class:: classref-introduction-group
描述
----
基于 CPU 的 2D 粒子节点，可用于创建各种粒子系统、粒子效果。
另见 :ref:`GPUParticles2D<class_GPUParticles2D>`\ ，利用硬件加速提供了相同的功能，但可能无法在较旧的设备上运行。
.. rst-class:: classref-introduction-group
教程
----
- :doc:`粒子系统（2D） <../tutorials/2d/particle_systems_2d>`
.. rst-class:: classref-reftable-group
属性
----
.. table::
:widths: auto
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`int<class_int>` | :ref:`amount<class_CPUParticles2D_property_amount>` | ``8`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`angle_curve<class_CPUParticles2D_property_angle_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`angle_max<class_CPUParticles2D_property_angle_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`angle_min<class_CPUParticles2D_property_angle_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`angular_velocity_curve<class_CPUParticles2D_property_angular_velocity_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`angular_velocity_max<class_CPUParticles2D_property_angular_velocity_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`angular_velocity_min<class_CPUParticles2D_property_angular_velocity_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`anim_offset_curve<class_CPUParticles2D_property_anim_offset_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`anim_offset_max<class_CPUParticles2D_property_anim_offset_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`anim_offset_min<class_CPUParticles2D_property_anim_offset_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`anim_speed_curve<class_CPUParticles2D_property_anim_speed_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`anim_speed_max<class_CPUParticles2D_property_anim_speed_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`anim_speed_min<class_CPUParticles2D_property_anim_speed_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Color<class_Color>` | :ref:`color<class_CPUParticles2D_property_color>` | ``Color(1, 1, 1, 1)`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Gradient<class_Gradient>` | :ref:`color_initial_ramp<class_CPUParticles2D_property_color_initial_ramp>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Gradient<class_Gradient>` | :ref:`color_ramp<class_CPUParticles2D_property_color_ramp>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`damping_curve<class_CPUParticles2D_property_damping_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`damping_max<class_CPUParticles2D_property_damping_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`damping_min<class_CPUParticles2D_property_damping_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Vector2<class_Vector2>` | :ref:`direction<class_CPUParticles2D_property_direction>` | ``Vector2(1, 0)`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` | :ref:`draw_order<class_CPUParticles2D_property_draw_order>` | ``0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`PackedColorArray<class_PackedColorArray>` | :ref:`emission_colors<class_CPUParticles2D_property_emission_colors>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`emission_normals<class_CPUParticles2D_property_emission_normals>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`PackedVector2Array<class_PackedVector2Array>` | :ref:`emission_points<class_CPUParticles2D_property_emission_points>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Vector2<class_Vector2>` | :ref:`emission_rect_extents<class_CPUParticles2D_property_emission_rect_extents>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` | :ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` | ``0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`emission_sphere_radius<class_CPUParticles2D_property_emission_sphere_radius>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`bool<class_bool>` | :ref:`emitting<class_CPUParticles2D_property_emitting>` | ``true`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`explosiveness<class_CPUParticles2D_property_explosiveness>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`int<class_int>` | :ref:`fixed_fps<class_CPUParticles2D_property_fixed_fps>` | ``0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`bool<class_bool>` | :ref:`fract_delta<class_CPUParticles2D_property_fract_delta>` | ``true`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Vector2<class_Vector2>` | :ref:`gravity<class_CPUParticles2D_property_gravity>` | ``Vector2(0, 980)`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`hue_variation_curve<class_CPUParticles2D_property_hue_variation_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`hue_variation_max<class_CPUParticles2D_property_hue_variation_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`hue_variation_min<class_CPUParticles2D_property_hue_variation_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`initial_velocity_max<class_CPUParticles2D_property_initial_velocity_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`initial_velocity_min<class_CPUParticles2D_property_initial_velocity_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`lifetime<class_CPUParticles2D_property_lifetime>` | ``1.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`lifetime_randomness<class_CPUParticles2D_property_lifetime_randomness>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`linear_accel_curve<class_CPUParticles2D_property_linear_accel_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`linear_accel_max<class_CPUParticles2D_property_linear_accel_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`linear_accel_min<class_CPUParticles2D_property_linear_accel_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`bool<class_bool>` | :ref:`local_coords<class_CPUParticles2D_property_local_coords>` | ``false`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`bool<class_bool>` | :ref:`one_shot<class_CPUParticles2D_property_one_shot>` | ``false`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`orbit_velocity_curve<class_CPUParticles2D_property_orbit_velocity_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`orbit_velocity_max<class_CPUParticles2D_property_orbit_velocity_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`orbit_velocity_min<class_CPUParticles2D_property_orbit_velocity_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`bool<class_bool>` | :ref:`particle_flag_align_y<class_CPUParticles2D_property_particle_flag_align_y>` | ``false`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`preprocess<class_CPUParticles2D_property_preprocess>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`radial_accel_curve<class_CPUParticles2D_property_radial_accel_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`radial_accel_max<class_CPUParticles2D_property_radial_accel_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`radial_accel_min<class_CPUParticles2D_property_radial_accel_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`randomness<class_CPUParticles2D_property_randomness>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`scale_amount_curve<class_CPUParticles2D_property_scale_amount_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`scale_amount_max<class_CPUParticles2D_property_scale_amount_max>` | ``1.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`scale_amount_min<class_CPUParticles2D_property_scale_amount_min>` | ``1.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`scale_curve_x<class_CPUParticles2D_property_scale_curve_x>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`scale_curve_y<class_CPUParticles2D_property_scale_curve_y>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`speed_scale<class_CPUParticles2D_property_speed_scale>` | ``1.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`bool<class_bool>` | :ref:`split_scale<class_CPUParticles2D_property_split_scale>` | ``false`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`spread<class_CPUParticles2D_property_spread>` | ``45.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Curve<class_Curve>` | :ref:`tangential_accel_curve<class_CPUParticles2D_property_tangential_accel_curve>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`tangential_accel_max<class_CPUParticles2D_property_tangential_accel_max>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`float<class_float>` | :ref:`tangential_accel_min<class_CPUParticles2D_property_tangential_accel_min>` | ``0.0`` |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
| :ref:`Texture2D<class_Texture2D>` | :ref:`texture<class_CPUParticles2D_property_texture>` | |
+---------------------------------------------------------+-------------------------------------------------------------------------------------+-----------------------+
.. rst-class:: classref-reftable-group
方法
----
.. table::
:widths: auto
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`convert_from_particles<class_CPUParticles2D_method_convert_from_particles>`\ (\ particles\: :ref:`Node<class_Node>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Curve<class_Curve>` | :ref:`get_param_curve<class_CPUParticles2D_method_get_param_curve>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`get_param_max<class_CPUParticles2D_method_get_param_max>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`get_param_min<class_CPUParticles2D_method_get_param_min>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>` | :ref:`get_particle_flag<class_CPUParticles2D_method_get_particle_flag>`\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ) |const| |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`restart<class_CPUParticles2D_method_restart>`\ (\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| |void| | :ref:`set_particle_flag<class_CPUParticles2D_method_set_particle_flag>`\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`, enable\: :ref:`bool<class_bool>`\ ) |
+---------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
信号
----
.. _class_CPUParticles2D_signal_finished:
.. rst-class:: classref-signal
**finished**\ (\ ) :ref:`🔗<class_CPUParticles2D_signal_finished>`
当所有活动粒子完成处理时发出。当 :ref:`one_shot<class_CPUParticles2D_property_one_shot>` 被禁用时，粒子将连续处理，因此它永远不会触发。
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
枚举
----
.. _enum_CPUParticles2D_DrawOrder:
.. rst-class:: classref-enumeration
enum **DrawOrder**: :ref:`🔗<enum_CPUParticles2D_DrawOrder>`
.. _class_CPUParticles2D_constant_DRAW_ORDER_INDEX:
.. rst-class:: classref-enumeration-constant
:ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **DRAW_ORDER_INDEX** = ``0``
粒子按发射顺序绘制。
.. _class_CPUParticles2D_constant_DRAW_ORDER_LIFETIME:
.. rst-class:: classref-enumeration-constant
:ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **DRAW_ORDER_LIFETIME** = ``1``
粒子按照剩余寿命的顺序绘制。换句话说，寿命最长的粒子被绘制在前面。
.. rst-class:: classref-item-separator
----
.. _enum_CPUParticles2D_Parameter:
.. rst-class:: classref-enumeration
enum **Parameter**: :ref:`🔗<enum_CPUParticles2D_Parameter>`
.. _class_CPUParticles2D_constant_PARAM_INITIAL_LINEAR_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_INITIAL_LINEAR_VELOCITY** = ``0``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置初始速度属性。
.. _class_CPUParticles2D_constant_PARAM_ANGULAR_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANGULAR_VELOCITY** = ``1``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置角速度属性。
.. _class_CPUParticles2D_constant_PARAM_ORBIT_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ORBIT_VELOCITY** = ``2``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置轨道速度属性。
.. _class_CPUParticles2D_constant_PARAM_LINEAR_ACCEL:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_LINEAR_ACCEL** = ``3``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置线性加速度属性。
.. _class_CPUParticles2D_constant_PARAM_RADIAL_ACCEL:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_RADIAL_ACCEL** = ``4``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置径向加速度属性。
.. _class_CPUParticles2D_constant_PARAM_TANGENTIAL_ACCEL:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_TANGENTIAL_ACCEL** = ``5``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置切向加速度属性。
.. _class_CPUParticles2D_constant_PARAM_DAMPING:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_DAMPING** = ``6``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置阻尼属性。
.. _class_CPUParticles2D_constant_PARAM_ANGLE:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANGLE** = ``7``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置角度属性。
.. _class_CPUParticles2D_constant_PARAM_SCALE:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_SCALE** = ``8``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置缩放属性。
.. _class_CPUParticles2D_constant_PARAM_HUE_VARIATION:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_HUE_VARIATION** = ``9``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置色相变化属性。
.. _class_CPUParticles2D_constant_PARAM_ANIM_SPEED:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANIM_SPEED** = ``10``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置动画速度属性。
.. _class_CPUParticles2D_constant_PARAM_ANIM_OFFSET:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_ANIM_OFFSET** = ``11``
与 :ref:`set_param_min<class_CPUParticles2D_method_set_param_min>`\ 、\ :ref:`set_param_max<class_CPUParticles2D_method_set_param_max>`\ 、\ :ref:`set_param_curve<class_CPUParticles2D_method_set_param_curve>` 一起使用，设置动画偏移属性。
.. _class_CPUParticles2D_constant_PARAM_MAX:
.. rst-class:: classref-enumeration-constant
:ref:`Parameter<enum_CPUParticles2D_Parameter>` **PARAM_MAX** = ``12``
代表 :ref:`Parameter<enum_CPUParticles2D_Parameter>` 枚举的大小。
.. rst-class:: classref-item-separator
----
.. _enum_CPUParticles2D_ParticleFlags:
.. rst-class:: classref-enumeration
enum **ParticleFlags**: :ref:`🔗<enum_CPUParticles2D_ParticleFlags>`
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY** = ``0``
与 :ref:`set_particle_flag<class_CPUParticles2D_method_set_particle_flag>` 一起使用，设置 :ref:`particle_flag_align_y<class_CPUParticles2D_property_particle_flag_align_y>`\ 。
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_ROTATE_Y:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_ROTATE_Y** = ``1``
为了与 3D 粒子节点保持一致而存在，在 2D 中不被使用。
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_DISABLE_Z:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_DISABLE_Z** = ``2``
为了与 3D 粒子节点保持一致而存在，在 2D 中不被使用。
.. _class_CPUParticles2D_constant_PARTICLE_FLAG_MAX:
.. rst-class:: classref-enumeration-constant
:ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` **PARTICLE_FLAG_MAX** = ``3``
代表 :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>` 枚举的大小。
.. rst-class:: classref-item-separator
----
.. _enum_CPUParticles2D_EmissionShape:
.. rst-class:: classref-enumeration
enum **EmissionShape**: :ref:`🔗<enum_CPUParticles2D_EmissionShape>`
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_POINT:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_POINT** = ``0``
所有粒子将从单个点发射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_SPHERE** = ``1``
粒子将在扁平化到二维的球体内发射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE_SURFACE:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_SPHERE_SURFACE** = ``2``
粒子将在扁平化到二维的球面上发射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_RECTANGLE:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_RECTANGLE** = ``3``
粒子将在矩形区域内发射。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_POINTS** = ``4``
粒子将在 :ref:`emission_points<class_CPUParticles2D_property_emission_points>` 中随机选择的位置发射。粒子颜色将通过 :ref:`emission_colors<class_CPUParticles2D_property_emission_colors>` 进行调制。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_DIRECTED_POINTS** = ``5``
粒子将在 :ref:`emission_points<class_CPUParticles2D_property_emission_points>` 中随机选择的位置发射。粒子的速度和旋转将基于 :ref:`emission_normals<class_CPUParticles2D_property_emission_normals>` 进行设置。粒子颜色将通过 :ref:`emission_colors<class_CPUParticles2D_property_emission_colors>` 进行调制。
.. _class_CPUParticles2D_constant_EMISSION_SHAPE_MAX:
.. rst-class:: classref-enumeration-constant
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **EMISSION_SHAPE_MAX** = ``6``
代表 :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` 枚举的大小。
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
属性说明
--------
.. _class_CPUParticles2D_property_amount:
.. rst-class:: classref-property
:ref:`int<class_int>` **amount** = ``8`` :ref:`🔗<class_CPUParticles2D_property_amount>`
.. rst-class:: classref-property-setget
- |void| **set_amount**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_amount**\ (\ )
单个发射周期内发射的粒子数。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angle_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **angle_curve** :ref:`🔗<class_CPUParticles2D_property_angle_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的旋转将沿着这条 :ref:`Curve<class_Curve>` 进行动画处理。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angle_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **angle_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angle_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大初始旋转，单位：度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angle_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **angle_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angle_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`angle_max<class_CPUParticles2D_property_angle_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angular_velocity_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **angular_velocity_curve** :ref:`🔗<class_CPUParticles2D_property_angular_velocity_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的角速度将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angular_velocity_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **angular_velocity_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angular_velocity_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大初始角速度（旋转速度），单位：\ *度*\ 每秒。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_angular_velocity_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **angular_velocity_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_angular_velocity_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`angular_velocity_max<class_CPUParticles2D_property_angular_velocity_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_offset_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **anim_offset_curve** :ref:`🔗<class_CPUParticles2D_property_anim_offset_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的动画偏移将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_offset_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_offset_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_offset_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
与纹理中的帧索引相对应的最大动画偏移量。\ ``0`` 是第一帧，\ ``1`` 是最后一帧。参见 :ref:`CanvasItemMaterial.particles_animation<class_CanvasItemMaterial_property_particles_animation>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_offset_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_offset_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_offset_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`anim_offset_max<class_CPUParticles2D_property_anim_offset_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_speed_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **anim_speed_curve** :ref:`🔗<class_CPUParticles2D_property_anim_speed_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的动画速度将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_speed_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_speed_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_speed_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
最大粒子动画速度。\ ``1`` 的动画速度是指粒子在生命周期内会做完整的 ``0`` 到 ``1`` 的偏移循环，\ ``2`` 则表示 ``2`` 个循环，如此等等。
当动画速度大于 ``1`` 时，如果希望动画重复，请记住启用 :ref:`CanvasItemMaterial.particles_anim_loop<class_CanvasItemMaterial_property_particles_anim_loop>` 属性。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_anim_speed_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **anim_speed_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_anim_speed_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`anim_speed_max<class_CPUParticles2D_property_anim_speed_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_color:
.. rst-class:: classref-property
:ref:`Color<class_Color>` **color** = ``Color(1, 1, 1, 1)`` :ref:`🔗<class_CPUParticles2D_property_color>`
.. rst-class:: classref-property-setget
- |void| **set_color**\ (\ value\: :ref:`Color<class_Color>`\ )
- :ref:`Color<class_Color>` **get_color**\ (\ )
每个粒子的初始颜色。如果定义了 :ref:`texture<class_CPUParticles2D_property_texture>`\ ，它将乘以该颜色。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_color_initial_ramp:
.. rst-class:: classref-property
:ref:`Gradient<class_Gradient>` **color_initial_ramp** :ref:`🔗<class_CPUParticles2D_property_color_initial_ramp>`
.. rst-class:: classref-property-setget
- |void| **set_color_initial_ramp**\ (\ value\: :ref:`Gradient<class_Gradient>`\ )
- :ref:`Gradient<class_Gradient>` **get_color_initial_ramp**\ (\ )
每个粒子的初始颜色将沿着这条 :ref:`GradientTexture1D<class_GradientTexture1D>`\ （乘以 :ref:`color<class_CPUParticles2D_property_color>`\ ）而变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_color_ramp:
.. rst-class:: classref-property
:ref:`Gradient<class_Gradient>` **color_ramp** :ref:`🔗<class_CPUParticles2D_property_color_ramp>`
.. rst-class:: classref-property-setget
- |void| **set_color_ramp**\ (\ value\: :ref:`Gradient<class_Gradient>`\ )
- :ref:`Gradient<class_Gradient>` **get_color_ramp**\ (\ )
每个粒子的颜色将沿着这条 :ref:`Gradient<class_Gradient>` 变化（与 :ref:`color<class_CPUParticles2D_property_color>` 相乘）。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_damping_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **damping_curve** :ref:`🔗<class_CPUParticles2D_property_damping_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
阻尼将沿着这条 :ref:`Gradient<class_Gradient>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_damping_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **damping_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_damping_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
粒子失去速度的最大速率。例如 ``100`` 的值表示粒子将在 ``1`` 秒内，速度从 ``100`` 变为 ``0``\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_damping_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **damping_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_damping_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`damping_max<class_CPUParticles2D_property_damping_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_direction:
.. rst-class:: classref-property
:ref:`Vector2<class_Vector2>` **direction** = ``Vector2(1, 0)`` :ref:`🔗<class_CPUParticles2D_property_direction>`
.. rst-class:: classref-property-setget
- |void| **set_direction**\ (\ value\: :ref:`Vector2<class_Vector2>`\ )
- :ref:`Vector2<class_Vector2>` **get_direction**\ (\ )
指定粒子发射方向的单位向量。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_draw_order:
.. rst-class:: classref-property
:ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **draw_order** = ``0`` :ref:`🔗<class_CPUParticles2D_property_draw_order>`
.. rst-class:: classref-property-setget
- |void| **set_draw_order**\ (\ value\: :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>`\ )
- :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` **get_draw_order**\ (\ )
粒子绘制顺序。使用 :ref:`DrawOrder<enum_CPUParticles2D_DrawOrder>` 的值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_colors:
.. rst-class:: classref-property
:ref:`PackedColorArray<class_PackedColorArray>` **emission_colors** :ref:`🔗<class_CPUParticles2D_property_emission_colors>`
.. rst-class:: classref-property-setget
- |void| **set_emission_colors**\ (\ value\: :ref:`PackedColorArray<class_PackedColorArray>`\ )
- :ref:`PackedColorArray<class_PackedColorArray>` **get_emission_colors**\ (\ )
设置使用 :ref:`EMISSION_SHAPE_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS>` 或 :ref:`EMISSION_SHAPE_DIRECTED_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS>` 时对粒子进行调制的 :ref:`Color<class_Color>`\ 。
**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.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_normals:
.. rst-class:: classref-property
:ref:`PackedVector2Array<class_PackedVector2Array>` **emission_normals** :ref:`🔗<class_CPUParticles2D_property_emission_normals>`
.. rst-class:: classref-property-setget
- |void| **set_emission_normals**\ (\ value\: :ref:`PackedVector2Array<class_PackedVector2Array>`\ )
- :ref:`PackedVector2Array<class_PackedVector2Array>` **get_emission_normals**\ (\ )
设置使用 :ref:`EMISSION_SHAPE_DIRECTED_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS>` 时粒子发射的方向。
**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.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_points:
.. rst-class:: classref-property
:ref:`PackedVector2Array<class_PackedVector2Array>` **emission_points** :ref:`🔗<class_CPUParticles2D_property_emission_points>`
.. rst-class:: classref-property-setget
- |void| **set_emission_points**\ (\ value\: :ref:`PackedVector2Array<class_PackedVector2Array>`\ )
- :ref:`PackedVector2Array<class_PackedVector2Array>` **get_emission_points**\ (\ )
设置使用 :ref:`EMISSION_SHAPE_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_POINTS>` 或 :ref:`EMISSION_SHAPE_DIRECTED_POINTS<class_CPUParticles2D_constant_EMISSION_SHAPE_DIRECTED_POINTS>` 时出生粒子的初始位置。
**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.
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_rect_extents:
.. rst-class:: classref-property
:ref:`Vector2<class_Vector2>` **emission_rect_extents** :ref:`🔗<class_CPUParticles2D_property_emission_rect_extents>`
.. rst-class:: classref-property-setget
- |void| **set_emission_rect_extents**\ (\ value\: :ref:`Vector2<class_Vector2>`\ )
- :ref:`Vector2<class_Vector2>` **get_emission_rect_extents**\ (\ )
:ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` 被设置为 :ref:`EMISSION_SHAPE_RECTANGLE<class_CPUParticles2D_constant_EMISSION_SHAPE_RECTANGLE>` 时，该矩形的范围。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_shape:
.. rst-class:: classref-property
:ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **emission_shape** = ``0`` :ref:`🔗<class_CPUParticles2D_property_emission_shape>`
.. rst-class:: classref-property-setget
- |void| **set_emission_shape**\ (\ value\: :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>`\ )
- :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>` **get_emission_shape**\ (\ )
粒子将在此区域内发射。可能的取值见 :ref:`EmissionShape<enum_CPUParticles2D_EmissionShape>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emission_sphere_radius:
.. rst-class:: classref-property
:ref:`float<class_float>` **emission_sphere_radius** :ref:`🔗<class_CPUParticles2D_property_emission_sphere_radius>`
.. rst-class:: classref-property-setget
- |void| **set_emission_sphere_radius**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_emission_sphere_radius**\ (\ )
:ref:`emission_shape<class_CPUParticles2D_property_emission_shape>` 被设置为 :ref:`EMISSION_SHAPE_SPHERE<class_CPUParticles2D_constant_EMISSION_SHAPE_SPHERE>` 时，该球体的半径。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_emitting:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **emitting** = ``true`` :ref:`🔗<class_CPUParticles2D_property_emitting>`
.. rst-class:: classref-property-setget
- |void| **set_emitting**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **is_emitting**\ (\ )
如果为 ``true``\ ，则正在发射粒子。\ :ref:`emitting<class_CPUParticles2D_property_emitting>` 可用于启动和停止粒子发射。但是，如果 :ref:`one_shot<class_CPUParticles2D_property_one_shot>` 为 ``true``\ ，则将 :ref:`emitting<class_CPUParticles2D_property_emitting>` 设置为 ``true`` 将不会重新启动该发射循环，直到所有活动粒子完成处理为止。一旦所有活动粒子完成处理，你可以使用 :ref:`finished<class_CPUParticles2D_signal_finished>` 信号来收取通知。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_explosiveness:
.. rst-class:: classref-property
:ref:`float<class_float>` **explosiveness** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_explosiveness>`
.. rst-class:: classref-property-setget
- |void| **set_explosiveness_ratio**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_explosiveness_ratio**\ (\ )
粒子在单个发射周期中的发射有多急。如果大于 ``0``\ ，则在下一个发射周期开始之前，发射会出现一个间隔。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_fixed_fps:
.. rst-class:: classref-property
:ref:`int<class_int>` **fixed_fps** = ``0`` :ref:`🔗<class_CPUParticles2D_property_fixed_fps>`
.. rst-class:: classref-property-setget
- |void| **set_fixed_fps**\ (\ value\: :ref:`int<class_int>`\ )
- :ref:`int<class_int>` **get_fixed_fps**\ (\ )
粒子系统的帧速率被固定为一个值。例如，将值更改为 2 会使粒子以每秒 2 帧的速度渲染。请注意，这并不会降低粒子系统本身的模拟速度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_fract_delta:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **fract_delta** = ``true`` :ref:`🔗<class_CPUParticles2D_property_fract_delta>`
.. rst-class:: classref-property-setget
- |void| **set_fractional_delta**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_fractional_delta**\ (\ )
如果为 ``为true``\ ，则使用分数增量 delta 计算，将具有更平滑的粒子显示效果。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_gravity:
.. rst-class:: classref-property
:ref:`Vector2<class_Vector2>` **gravity** = ``Vector2(0, 980)`` :ref:`🔗<class_CPUParticles2D_property_gravity>`
.. rst-class:: classref-property-setget
- |void| **set_gravity**\ (\ value\: :ref:`Vector2<class_Vector2>`\ )
- :ref:`Vector2<class_Vector2>` **get_gravity**\ (\ )
应用于每个粒子的重力。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_hue_variation_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **hue_variation_curve** :ref:`🔗<class_CPUParticles2D_property_hue_variation_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的色相都会沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_hue_variation_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **hue_variation_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_hue_variation_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大初始色相变化。会改变粒子颜色的色相。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_hue_variation_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **hue_variation_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_hue_variation_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`hue_variation_max<class_CPUParticles2D_property_hue_variation_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_initial_velocity_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **initial_velocity_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_initial_velocity_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的最大初始速度大小。方向来自 :ref:`direction<class_CPUParticles2D_property_direction>` 和 :ref:`spread<class_CPUParticles2D_property_spread>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_initial_velocity_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **initial_velocity_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_initial_velocity_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`initial_velocity_max<class_CPUParticles2D_property_initial_velocity_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_lifetime:
.. rst-class:: classref-property
:ref:`float<class_float>` **lifetime** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_lifetime>`
.. rst-class:: classref-property-setget
- |void| **set_lifetime**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_lifetime**\ (\ )
每个粒子存在的时间。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_lifetime_randomness:
.. rst-class:: classref-property
:ref:`float<class_float>` **lifetime_randomness** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_lifetime_randomness>`
.. rst-class:: classref-property-setget
- |void| **set_lifetime_randomness**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_lifetime_randomness**\ (\ )
粒子寿命随机率。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_linear_accel_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **linear_accel_curve** :ref:`🔗<class_CPUParticles2D_property_linear_accel_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的线性加速度将沿这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_linear_accel_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **linear_accel_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_linear_accel_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
在运动方向上应用于每个粒子的最大线性加速度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_linear_accel_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **linear_accel_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_linear_accel_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`linear_accel_max<class_CPUParticles2D_property_linear_accel_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_local_coords:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **local_coords** = ``false`` :ref:`🔗<class_CPUParticles2D_property_local_coords>`
.. rst-class:: classref-property-setget
- |void| **set_use_local_coordinates**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_use_local_coordinates**\ (\ )
如果为 ``true``\ ，粒子使用父节点的坐标空间（称为局部坐标）。这将导致粒子在移动或旋转时，沿着 **CPUParticles2D** 节点（及其父节点）移动和旋转。如果为 ``false``\ ，则粒子使用全局坐标；当移动或旋转时，它们不会沿着 **CPUParticles2D** 节点（及其父节点）移动或旋转。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_one_shot:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **one_shot** = ``false`` :ref:`🔗<class_CPUParticles2D_property_one_shot>`
.. rst-class:: classref-property-setget
- |void| **set_one_shot**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_one_shot**\ (\ )
如果为 ``true``\ ，则只发生一个发射周期。如果在某个周期内设置为 ``true``\ ，则发射将在该周期结束时停止。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_orbit_velocity_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **orbit_velocity_curve** :ref:`🔗<class_CPUParticles2D_property_orbit_velocity_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的轨道速度将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_orbit_velocity_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **orbit_velocity_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_orbit_velocity_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大轨道速度。使粒子围绕原点旋转。以每秒围绕原点的完整旋转数指定。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_orbit_velocity_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **orbit_velocity_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_orbit_velocity_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`orbit_velocity_max<class_CPUParticles2D_property_orbit_velocity_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_particle_flag_align_y:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **particle_flag_align_y** = ``false`` :ref:`🔗<class_CPUParticles2D_property_particle_flag_align_y>`
.. rst-class:: classref-property-setget
- |void| **set_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`, enable\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ) |const|
将粒子的 Y 轴与其速度方向对齐。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_preprocess:
.. rst-class:: classref-property
:ref:`float<class_float>` **preprocess** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_preprocess>`
.. rst-class:: classref-property-setget
- |void| **set_pre_process_time**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_pre_process_time**\ (\ )
粒子系统启动时就好像已经运行了这么多秒一样。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_radial_accel_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **radial_accel_curve** :ref:`🔗<class_CPUParticles2D_property_radial_accel_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的径向加速度将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_radial_accel_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **radial_accel_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_radial_accel_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大径向加速度。使粒子加速远离原点；或如果为负，则加速靠近原点。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_radial_accel_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **radial_accel_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_radial_accel_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`radial_accel_max<class_CPUParticles2D_property_radial_accel_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_randomness:
.. rst-class:: classref-property
:ref:`float<class_float>` **randomness** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_randomness>`
.. rst-class:: classref-property-setget
- |void| **set_randomness_ratio**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_randomness_ratio**\ (\ )
发射寿命随机率。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_amount_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **scale_amount_curve** :ref:`🔗<class_CPUParticles2D_property_scale_amount_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的缩放将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_amount_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **scale_amount_max** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_scale_amount_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大初始缩放。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_amount_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **scale_amount_min** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_scale_amount_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`scale_amount_max<class_CPUParticles2D_property_scale_amount_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_curve_x:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **scale_curve_x** :ref:`🔗<class_CPUParticles2D_property_scale_curve_x>`
.. rst-class:: classref-property-setget
- |void| **set_scale_curve_x**\ (\ value\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_scale_curve_x**\ (\ )
每个粒子的水平缩放都会沿着这条 :ref:`Curve<class_Curve>` 变化。
必须启用 :ref:`split_scale<class_CPUParticles2D_property_split_scale>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_scale_curve_y:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **scale_curve_y** :ref:`🔗<class_CPUParticles2D_property_scale_curve_y>`
.. rst-class:: classref-property-setget
- |void| **set_scale_curve_y**\ (\ value\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_scale_curve_y**\ (\ )
每个粒子的垂直缩放都会沿着这条 :ref:`Curve<class_Curve>` 变化。
必须启用 :ref:`split_scale<class_CPUParticles2D_property_split_scale>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_speed_scale:
.. rst-class:: classref-property
:ref:`float<class_float>` **speed_scale** = ``1.0`` :ref:`🔗<class_CPUParticles2D_property_speed_scale>`
.. rst-class:: classref-property-setget
- |void| **set_speed_scale**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_speed_scale**\ (\ )
粒子系统的运行速度的缩放率。\ ``0`` 值可用于暂停粒子。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_split_scale:
.. rst-class:: classref-property
:ref:`bool<class_bool>` **split_scale** = ``false`` :ref:`🔗<class_CPUParticles2D_property_split_scale>`
.. rst-class:: classref-property-setget
- |void| **set_split_scale**\ (\ value\: :ref:`bool<class_bool>`\ )
- :ref:`bool<class_bool>` **get_split_scale**\ (\ )
如果为 ``true``\ ，缩放曲线将被拆分成 x 和 y 分量。见 :ref:`scale_curve_x<class_CPUParticles2D_property_scale_curve_x>` 和 :ref:`scale_curve_y<class_CPUParticles2D_property_scale_curve_y>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_spread:
.. rst-class:: classref-property
:ref:`float<class_float>` **spread** = ``45.0`` :ref:`🔗<class_CPUParticles2D_property_spread>`
.. rst-class:: classref-property-setget
- |void| **set_spread**\ (\ value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_spread**\ (\ )
每个粒子的初始方向范围，从 ``+spread`` 度到 ``-spread`` 度。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_tangential_accel_curve:
.. rst-class:: classref-property
:ref:`Curve<class_Curve>` **tangential_accel_curve** :ref:`🔗<class_CPUParticles2D_property_tangential_accel_curve>`
.. rst-class:: classref-property-setget
- |void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ )
- :ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
每个粒子的切向加速度将沿着这条 :ref:`Curve<class_Curve>` 变化。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_tangential_accel_max:
.. rst-class:: classref-property
:ref:`float<class_float>` **tangential_accel_max** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_tangential_accel_max>`
.. rst-class:: classref-property-setget
- |void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
应用于每个粒子的最大切向加速度。切向加速度垂直于粒子的速度，从而使粒子产生涡旋运动。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_tangential_accel_min:
.. rst-class:: classref-property
:ref:`float<class_float>` **tangential_accel_min** = ``0.0`` :ref:`🔗<class_CPUParticles2D_property_tangential_accel_min>`
.. rst-class:: classref-property-setget
- |void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ )
- :ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const|
:ref:`tangential_accel_max<class_CPUParticles2D_property_tangential_accel_max>` 的对应最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_property_texture:
.. rst-class:: classref-property
:ref:`Texture2D<class_Texture2D>` **texture** :ref:`🔗<class_CPUParticles2D_property_texture>`
.. rst-class:: classref-property-setget
- |void| **set_texture**\ (\ value\: :ref:`Texture2D<class_Texture2D>`\ )
- :ref:`Texture2D<class_Texture2D>` **get_texture**\ (\ )
粒子纹理。如果为 ``null``\ ，则粒子将为正方形。
.. rst-class:: classref-section-separator
----
.. rst-class:: classref-descriptions-group
方法说明
--------
.. _class_CPUParticles2D_method_convert_from_particles:
.. rst-class:: classref-method
|void| **convert_from_particles**\ (\ particles\: :ref:`Node<class_Node>`\ ) :ref:`🔗<class_CPUParticles2D_method_convert_from_particles>`
设置该节点的属性以匹配给定的 :ref:`GPUParticles2D<class_GPUParticles2D>` 节点，该给定节点已分配了一个 :ref:`ParticleProcessMaterial<class_ParticleProcessMaterial>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_param_curve:
.. rst-class:: classref-method
:ref:`Curve<class_Curve>` **get_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_param_curve>`
返回由 :ref:`Parameter<enum_CPUParticles2D_Parameter>` 指定的参数的 :ref:`Curve<class_Curve>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_param_max:
.. rst-class:: classref-method
:ref:`float<class_float>` **get_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_param_max>`
返回给定参数的最大值范围。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_param_min:
.. rst-class:: classref-method
:ref:`float<class_float>` **get_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_param_min>`
返回给定参数的最小值范围。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_get_particle_flag:
.. rst-class:: classref-method
:ref:`bool<class_bool>` **get_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ) |const| :ref:`🔗<class_CPUParticles2D_method_get_particle_flag>`
返回给定标志的启用状态（选项见 :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ）。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_restart:
.. rst-class:: classref-method
|void| **restart**\ (\ ) :ref:`🔗<class_CPUParticles2D_method_restart>`
重新启动粒子发射器。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_param_curve:
.. rst-class:: classref-method
|void| **set_param_curve**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, curve\: :ref:`Curve<class_Curve>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_param_curve>`
设置 :ref:`Parameter<enum_CPUParticles2D_Parameter>` 指定的参数的 :ref:`Curve<class_Curve>`\ 。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_param_max:
.. rst-class:: classref-method
|void| **set_param_max**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_param_max>`
设置给定参数的最大值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_param_min:
.. rst-class:: classref-method
|void| **set_param_min**\ (\ param\: :ref:`Parameter<enum_CPUParticles2D_Parameter>`, value\: :ref:`float<class_float>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_param_min>`
设置给定参数的最小值。
.. rst-class:: classref-item-separator
----
.. _class_CPUParticles2D_method_set_particle_flag:
.. rst-class:: classref-method
|void| **set_particle_flag**\ (\ particle_flag\: :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`, enable\: :ref:`bool<class_bool>`\ ) :ref:`🔗<class_CPUParticles2D_method_set_particle_flag>`
启用或禁用给定的标志（选项见 :ref:`ParticleFlags<enum_CPUParticles2D_ParticleFlags>`\ ）。
.. |virtual| replace:: :abbr:`virtual (本方法通常需要用户覆盖才能生效。)`
.. |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。)`
.. |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。)`
.. |constructor| replace:: :abbr:`constructor (本方法用于构造某个类型。)`
.. |static| replace:: :abbr:`static (调用本方法无需实例，可直接使用类名进行调用。)`
.. |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。)`
.. |bitfield| replace:: :abbr:`BitField (这个值是由下列位标志构成位掩码的整数。)`
.. |void| replace:: :abbr:`void (无返回值。)`
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