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# This file is automatically generated. Please don't edit it manually.
# To submit a bug report on the content, see
# https://devforum.roblox.com/c/bug-reports/documentation-issues/72
name: UniversalConstraint
type: class
memory_category: BaseParts
summary: |
Ensures two axes on two bodies remain perpendicular.
description: |
A **UniversalConstraint** ensures two axes on two bodies remain perpendicular.
Contextually, this constraint is more restrictive than a
`Class.BallSocketConstraint` but less restrictive than a
`Class.HingeConstraint` by one degree of freedom.
Example applications of this constraint include transmitting power between the
transmission and drive shafts of cars, robotics, and more.
When configuring this constraint, it may be helpful to study
[Roblox Units](../../../physics/units.md) to understand how Roblox units
compare to metric units.
#### Limits
Enabling the `Class.UniversalConstraint.LimitsEnabled|LimitsEnabled` property
exposes the `Class.UniversalConstraint.MaxAngle|MaxAngle` limit to restrict
tilt within a cone, as well as
`Class.UniversalConstraint.Restitution|Restitution` which defines the
elasticity of the attachments when they reach the limit.
code_samples: []
inherits:
- Constraint
descendants: []
tags: []
deprecation_message: ''
properties:
- name: UniversalConstraint.LimitsEnabled
summary: |
Determines whether the angular motion of attachments' primary axes is
limited.
description: |
This property, when enabled, limits the relative angular motion of the
primary axes of attachments through a cone constraint. The default value
is false.
code_samples: []
type: boolean
tags: []
deprecation_message: ''
security:
read: None
write: None
thread_safety: ReadSafe
category: Universal
serialization:
can_load: true
can_save: true
capabilities:
- Physics
- name: UniversalConstraint.MaxAngle
summary: |
The max angle, in degrees, of the constraint's limiting cone.
description: |
This property determines the max angle, in degrees, of the constraint's
limiting cone, formed from `Class.Constraint.Attachment0|Attachment0` and
its primary axis. The default value is 45 degrees.
In order for this property to take affect, the constraint's
`Class.UniversalConstraint.LimitsEnabled|LimitsEnabled` property must be
set to true.
code_samples: []
type: float
tags: []
deprecation_message: ''
security:
read: None
write: None
thread_safety: ReadSafe
category: Limits
serialization:
can_load: true
can_save: true
capabilities:
- Physics
- name: UniversalConstraint.Radius
summary: |
The constraint's visualization radius.
description: |
This property indicates the constraint's visualization radius, in studs.
Default value is 0.2.
code_samples: []
type: float
tags: []
deprecation_message: ''
security:
read: None
write: None
thread_safety: ReadSafe
category: Appearance
serialization:
can_load: true
can_save: true
capabilities:
- Physics
- name: UniversalConstraint.Restitution
summary: |
The restitution coefficient of the cone constraint.
description: |
This property determines the restitution of the two
`Class.Attachment|Attachments` connected by the
`Class.UniversalConstraint` when they reach the end of the range specified
by `Class.UniversalConstraint.MaxAngle|MaxAngle`. The value defaults to 0
and can be any floating number in the range of 0 to 1. Only applies when
`Class.UniversalConstraint.LimitsEnabled|LimitsEnabled` is set to true.
code_samples: []
type: float
tags: []
deprecation_message: ''
security:
read: None
write: None
thread_safety: ReadSafe
category: Limits
serialization:
can_load: true
can_save: true
capabilities:
- Physics
methods: []
events: []
callbacks: []