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name: AlignPosition
type: class
memory_category: BaseParts
summary: |
  Constraint which applies force to move two attachments together, or to move
  one attachment to a goal position.
description: |
  The `AlignPosition` constraint applies force to move two attachments together,
  or to move one attachment to a goal position. As indicated by the name, it
  only affects the **position** of the attachments, not their orientation (to
  align attachments by **orientation**, see `Class.AlignOrientation`).

  When configuring this constraint, it may be helpful to study
  [Roblox Units](../../../physics/units.md) to understand how Roblox units
  compare to metric units.

  #### Force Location

  By default, force is applied to the parent of
  `Class.Constraint.Attachment0|Attachment0` at that attachment's location,
  meaning that if the parent's center of mass is not aligned with the direction
  of the force, torque will be applied as well as force. Alternatively, force
  can be applied to the parents' center of mass by toggling on
  `Class.AlignPosition.ApplyAtCenterOfMass|ApplyAtCenterOfMass`.

  #### Reactionary Force

  By default, the constraint only applies force to
  `Class.Constraint.Attachment0|Attachment0` while
  `Class.Constraint.Attachment1|Attachment1` remains unaffected. If desired,
  force can be applied to both attachments in **equal and opposite directions**
  by enabling `Class.AlignPosition.ReactionForceEnabled|ReactionForceEnabled`.

  #### Force Limits

  You can configure this constraint to apply the maximum force that constraints
  allow through the `Class.AlignPosition.RigidityEnabled|RigidityEnabled`
  property. When `true`, the physics solver reacts as quickly as possible to
  complete the alignment. When `false`, the force applied by the constraint is
  limited based on `Class.AlignPosition.ForceLimitMode|ForceLimitMode`,
  `Class.AlignPosition.MaxVelocity|MaxVelocity`, and
  `Class.AlignPosition.Responsiveness|Responsiveness`. See
  `Class.AlignPosition.ForceLimitMode|ForceLimitMode` for further details.

  #### Attachment Mode

  This constraint can use either **one** or **two** attachments in calculating
  its goal. See `Class.AlignPosition.Mode|Mode` for details.
code_samples: []
inherits:
  - Constraint
descendants: []
tags: []
deprecation_message: ''
properties:
  - name: AlignPosition.ApplyAtCenterOfMass
    summary: |
      Whether force is applied to the parent of
      `Class.Constraint.Attachment0|Attachment0` at that attachment's location,
      or at the parents' center of mass.
    description: |
      When `false` (default), force is applied to the parent of
      `Class.Constraint.Attachment0|Attachment0` at that attachment's location,
      meaning that if the parent's center of mass is not aligned with the
      direction of the force, torque will be applied as well as force. When
      `true`, force is applied at the parents' center of mass.
    code_samples: []
    type: boolean
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: AlignPosition
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.ForceLimitMode
    summary: |
      Determines how the constraint force will be limited. Only used if
      `Class.AlignPosition.RigidityEnabled|RigidityEnabled` is `false`.
    description: |
      Determines how the constraint force will be limited when
      `Class.AlignPosition.RigidityEnabled|RigidityEnabled` is `false`. When set
      to `Enum.ForceLimitMode|Magnitude`, the constraint force will be limited
      such that the magnitude is less than
      `Class.AlignPosition.MaxForce|MaxForce`. When set to
      `Enum.ForceLimitMode|PerAxis`, the constraint force along each axis will
      be limited by `Class.AlignPosition.MaxAxesForce|MaxAxesForce`. The axes
      along which the force will be limited are based on the
      `Class.AlignPosition.ForceRelativeTo|ForceRelativeTo` property.
    code_samples: []
    type: ForceLimitMode
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Compliance
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.ForceRelativeTo
    summary: |
      Determines the axes that the constraint uses to limit the force. Only
      applies when `Class.AlignPosition.RigidityEnabled|RigidityEnabled` is
      `false` and `Class.AlignPosition.ForceLimitMode` is
      `Enum.ForceLimitMode|PerAxis`. .
    description: |
      Determines the axes that the constraint uses to limit the force. Only
      applies when `Class.AlignPosition.RigidityEnabled|RigidityEnabled` is
      `false` and `Class.AlignPosition.ForceLimitMode` is
      `Enum.ForceLimitMode|PerAxis`. When set to
      `Enum.ActuatorRelativeTo|World`, the constraint force is computed in the
      world reference frame and the force limits specified in
      `Class.AlignPosition.MaxAxesForce|MaxAxesForce` refer to the axes of the
      world coordinate system. When set to `Enum.ActuatorRelativeTo|Attachment0`
      or `Enum.ActuatorRelativeTo|Attachment1`, the force limits specified in
      `Class.AlignPosition.MaxAxesForce|MaxAxesForce` refer to the axes of the
      specified attachment coordinate system.
    code_samples: []
    type: ActuatorRelativeTo
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Compliance
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.MaxAxesForce
    summary: |
      Maximum force along each axis that the constraint can apply to achieve its
      goal.
    description: |
      Maximum force along each axis that the constraint can apply to achieve its
      goal. Only used if `Class.AlignPosition.RigidityEnabled|RigidityEnabled`
      is `false` and `Class.AlignPosition.ForceLimitMode|ForceLimitMode` is
      `Enum.ForceLimitMode|PerAxis`. The axes used to apply to the limit are
      specified using the `Class.AlignPosition.ForceRelativeTo|ForceRelativeTo`
      property.
    code_samples: []
    type: Vector3
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Compliance
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.MaxForce
    summary: |
      Maximum force magnitude the constraint can apply to achieve its goal.
    description: |
      Maximum force magnitude the constraint can apply to achieve its goal. Only
      used if `Class.AlignPosition.RigidityEnabled|RigidityEnabled` is `false`
      and `Class.AlignPosition.ForceLimitMode|ForceLimitMode` is
      `Enum.ForceLimitMode|Magnitude`.

      Note that `Class.AlignPosition.MaxForce|MaxForce`, as well as
      `Class.AlignPosition.MaxVelocity|MaxVelocity`, are **caps** to the force
      and velocity respectively. The actual scale is determined by
      `Class.AlignPosition.Responsiveness|Responsiveness`.
    code_samples: []
    type: float
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Compliance
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.MaxVelocity
    summary: |
      Maximum speed the attachments can move when converging.
    description: |
      Maximum speed the attachments can move when converging. Only used if
      `Class.AlignPosition.RigidityEnabled|RigidityEnabled` is `false`.

      Note that `Class.AlignPosition.MaxVelocity|MaxVelocity`, as well as
      `Class.AlignPosition.MaxForce|MaxForce`, are **caps** to the velocity and
      force respectively. The actual scale is determined by
      `Class.AlignPosition.Responsiveness|Responsiveness`.
    code_samples: []
    type: float
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Compliance
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.Mode
    summary: |
      Whether the constraint uses one or two attachments in calculating its
      goal.
    description: |
      Whether the constraint uses **one** or **two** attachments in calculating
      its goal. By default, this is `Enum.PositionAlignmentMode|TwoAttachment`,
      meaning that the constraint disregards
      `Class.AlignPosition.Position|Position` and attempts to move
      `Class.Constraint.Attachment0|Attachment0` to the position of
      `Class.Constraint.Attachment1|Attachment1`.

      If set to `Enum.PositionAlignmentMode|OneAttachment`, the constraint
      disregards `Class.Constraint.Attachment1|Attachment1` and attempts to move
      `Class.Constraint.Attachment0|Attachment0` to
      `Class.AlignPosition.Position|Position`.
    code_samples: []
    type: PositionAlignmentMode
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: AlignmentMode
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.Position
    summary: |
      The position to which the constraint should move its
      `Class.Constraint.Attachment0|Attachment0`.
    description: |
      The position to which the constraint should move its
      `Class.Constraint.Attachment0|Attachment0`. Only used if
      `Class.AlignPosition.Mode|Mode` is set to
      `Enum.PositionAlignmentMode|OneAttachment`, in which case
      `Class.Constraint.Attachment1|Attachment1` is disregarded.
    code_samples: []
    type: Vector3
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: AlignPosition
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.ReactionForceEnabled
    summary: |
      Whether the constraint applies force only to
      `Class.Constraint.Attachment0|Attachment0`, or to both attachments in
      equal and opposite directions.
    description: |
      If `false` (default), the constraint only applies force to
      `Class.Constraint.Attachment0|Attachment0` while
      `Class.Constraint.Attachment1|Attachment1` remains unaffected. If `true`,
      the constraint applies force to both attachments in **equal and opposite
      directions**.
    code_samples: []
    type: boolean
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: AlignPosition
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.Responsiveness
    summary: |
      Controls how quickly the constraint reaches its goal. Higher values cause
      the attachment(s) to align more rapidly.
    description: |
      Controls how quickly the constraint reaches its goal. Higher values cause
      the attachment(s) to align more rapidly. Value can be between 5 and 200.
    code_samples: []
    type: float
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Compliance
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: AlignPosition.RigidityEnabled
    summary: |
      Whether force is dependent on other properties, or if the physics solver
      reacts as quickly as possible to complete the alignment.
    description: |
      Whether force is dependent on other properties, or if the physics solver
      reacts as quickly as possible to complete the alignment. If `false`
      (default), the force is determined by
      `Class.AlignPosition.MaxForce|MaxForce`,
      `Class.AlignPosition.MaxVelocity|MaxVelocity`, and
      `Class.AlignPosition.Responsiveness|Responsiveness`. If `true`, the
      physics solver reacts as quickly as possible to complete the alignment.
    code_samples: []
    type: boolean
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: AlignPosition
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
methods: []
events: []
callbacks: []