Particle-Particle Collision Affector
Updated: 17 Feb 2025
Allows particles to collide with each other.
Particle-Particle Collision Affector
Method #
This node allows the particles to collide with each other while simulating, with a defined collision radius. Combined with the Particles To Point Geometry node, and a similar collision radius/sphere size, it is possible to simulate simple ball physics between the particles.
Parameters
These properties control the core behaviours of the node.
Parameter Details Particle Collision Radius
Radius around a particle in which it will calculate colliding with others particles.
Collision Velocity Scale
Scales the velocity of the particle after a collision so they can be made to slow down.
Collision Softening
Reduce the impact of collisions between particles.
Dimension
Choose whether the effect is 2D or 3D.
Simulation Steps
Duration of each calculation step, controlling the precision and speed of the simulation.
The properties control the time at which the node is active. See Timeline for editing time segments.
Parameter Details Duration
Control the duration of the node’s time segment.
- Composition Duration : Use the length of the composition for the node’s time segment duration.
- Custom : Set a custom duration for the node’s time segment.
Node Time
The custom start and end time for the node.
Duration (Timecode)
The length of the node’s time segment (in time).
Duration (Frames)
The length of the node’s time segment (in frames).
Time Segment Enabled
Set whether the node’s time segment is enabled or not in the Timeline.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Particle Collision Radius | Radius around a particle in which it will calculate colliding with others particles. |
| Collision Velocity Scale | Scales the velocity of the particle after a collision so they can be made to slow down. |
| Collision Softening | Reduce the impact of collisions between particles. |
| Dimension | Choose whether the effect is 2D or 3D. |
| Simulation Steps | Duration of each calculation step, controlling the precision and speed of the simulation. |
The properties control the time at which the node is active. See Timeline for editing time segments.
| Parameter | Details |
|---|---|
| Duration |
Control the duration of the node’s time segment.
|
| Node Time | The custom start and end time for the node. |
| Duration (Timecode) | The length of the node’s time segment (in time). |
| Duration (Frames) | The length of the node’s time segment (in frames). |
| Time Segment Enabled | Set whether the node’s time segment is enabled or not in the Timeline. |
| Name | Description | Typical Input |
|---|---|---|
| Affected Emitters | Choose which particle emitters can be affected by the affector. | Primitive Emitter |
| Weights | Add a particle weight node to vary the node’s effect on the particle system. | Noise Weight |
| Transform Modifiers | Apply the transforms of another node to this node. | Null |
| Target Node | Modifiy the rotations of the node to always direct the z axis towards the input. | Null |
| Local Transform Override | Apply the transforms of another node to this node, relative to its parent. | Null |