Guides:Constraint dampening: Difference between revisions

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Constraint dampening or self referencing constraints, is a way to gradually have a constraint follow a source transform instead of snapping to it. This is mainly used on avatars, but can be used in worlds as well.  Main constraint types used are Parent, Position, Rotation, and Scale constraints.[[File:Constraint_dampening_example.gif|border]]


== Setup ==
[[File:Constraint_dampening_example.gif|thumb|526x296px|Example effect of dampening]]
Constraint dampening, or self-referencing constraints, allows a constraint to follow its source gradually instead of snapping instantly. It’s most commonly used on avatars, but works in worlds too. The main constraint types are Parent, Position, Rotation, and Scale constraints. Keep weight% of source. 0 (0%) is an instant update to target, 0.2 (20%) - 0.3 (30%) is a good value to smooth out network updates.
 
The speed toward the target depends on:
*Current distance to the target (larger gap ⇒ faster)
* Frame rate (more frames per second ⇒ faster)
*Damp weight (lower damp ⇒ faster)
 
== Setup==
===Manual===
[[File:Constraint dampening editor.webp|thumb|Editor setup example]]
[[File:Constraint dampening editor.webp|thumb|Editor setup example]]
To setup add the Gameobject that the constraint is on to one of the sources for your constraint, and have its weight set to 1. The other sources will be what you want the constraint to move towards. You can adjust the speed of the constraint by changing the weight of the other sources. Higher values is faster, and lower values is slower.


==Official resources==
# Add the GameObject with the constraint as one of the sources in the Constraint component, and set its weight to 1. 
* [https://docs.unity3d.com/Packages/com.unity.animation.rigging@1.3/manual/constraints/DampedTransform.html| 'Damped Transform | Animation Rigging'] on ''docs.unity3d.com''
# Use a second source for the target position
 
===Automated===
The [[VRChat Package Manager|VPM package]] from [[Community:VRLabs|VRLabs]] automates this process. After adding it to your hierarchy, unpack the package and move the target object to its desired position.
 
*[https://github.com/VRLabs/Damping-Constraints/blob/main/README.md Project Page] at github.com
 
 
==Resources==
*[https://docs.unity3d.com/Packages/com.unity.animation.rigging@1.3/manual/constraints/DampedTransform.html 'Damped Transform | Animation Rigging'] on ''docs.unity3d.com''


[[Category:Guides]]
[[Category:Guides]]

Latest revision as of 13:45, 30 April 2025

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Example effect of dampening

Constraint dampening, or self-referencing constraints, allows a constraint to follow its source gradually instead of snapping instantly. It’s most commonly used on avatars, but works in worlds too. The main constraint types are Parent, Position, Rotation, and Scale constraints. Keep weight% of source. 0 (0%) is an instant update to target, 0.2 (20%) - 0.3 (30%) is a good value to smooth out network updates.

The speed toward the target depends on:

  • Current distance to the target (larger gap ⇒ faster)
  • Frame rate (more frames per second ⇒ faster)
  • Damp weight (lower damp ⇒ faster)

Setup

Manual

Editor setup example
  1. Add the GameObject with the constraint as one of the sources in the Constraint component, and set its weight to 1.
  2. Use a second source for the target position

Automated

The VPM package from VRLabs automates this process. After adding it to your hierarchy, unpack the package and move the target object to its desired position.


Resources