This node simulates a spring-like effect between a particle’s current position and its original emission position, making it spring back towards the point it was emitted from over a period of time. This can be used to restore particles to their original emitted form, or as part of cloth simulations.

This image is taken from the “furball.dfx” sample project.
Example Nodegraph


Name Description
Position X Move its position along the x-axis in local space.
Position Y Move its position along the y-axis in local space.
Position Z Move its position along the z-axis in local space.
Rotation Heading Rotate the object about the x-axis.
Rotation Pitch Rotate the object about the y-axis.
Rotation Bank Rotate the object about the z-axis.
Scale X Scale along the x-axis.
Scale Y Scale along the y-axis.
Scale Z Scale along the z-axis.

Inherit Transform Channels

Toggle which transform channels should be inherited. By default, all are on.


Name Description
Spring Length The scaling applied to the rest length of the generated springs.
Spring Strength The strength of the spring effect. Larger values will make spring forces greater and particles will move more quickly.
Spring Dampening The dampening applied to the spring forces.


Name Description Typical Node Input
Affected Emitters Choose which emitters can be affected by the affector. Primitive Emitter
Procedural Falloff Use the SDF values from a procedural system to dictate the falloff. Procedural Root
Transform Modifier Links all transform properties to the input node. Null
Target Node Always faces the x-axis towards the inputs anchor point. Null
Local Transform Override Override the transformation values of the node, relative to its parent. Null


All nodes connected to this node are treated as if flowing to the parent node, and inherits any transformation changes along the chain.