Method

The particle cache node allows you to store the animation of particles to disk. This allows them to be scrubbed in time and played deterministically rather than simulated during playback.
Particle cache files may be very large on disk.

Example Nodegraph
When the baking is finished you may disable the effectors.
Baking Panel
The file extension for particle cache is *.pcache.

Transform

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.

Attributes

Name Description
Bake Now.. Open baking panel and begin bake
Particle Cache Cached file
Realflow Animation Load *.bin realflow file
Playback Rate Playback speed
Playback Time Offset Offset the playback Time
Looping Enable loop playback
Use Node Material Use the particle material on this node, instead of the material baked into the cache

Colour Control

To enable, add an input into this node.

Name Description
Colour Selection Mode Choose how the input colour affects the particles.
  • Input Colour, the first colour input is the only colour output.
  • Selected Single Colour, Uses the Colour selection parameter to decide which colour to use from the input ramp.
  • Emission Time, colour is selected based on time at which the particle is emitted.
  • Random Colour, the colour is selected randomly at the particles creation.
Colour Selection Parameters A number used to select the colour output.

Material

Name Description
Colour RGB colour of particles.
Diffuse Control how much the light is scattered from the surface of the object.
Emissiveness Control how much light is emitted by the particle.
Life Colour Affecter Weight Controls how much the result of any Life Colour Shading nodes are blended with the particle’s colour.
Particle Scale Scale the size of the particle.
Dof Amount How much depth of field effects the particles material.
Density The density, for use in some simulations.
Temperature The density, for use in some simulations.
Cooling Rate The cooling rate, for thermal dynamics simulations.
Density Decay Control the rate of decay in the density.
Fade In Time What percentage through the particles life span the particle fades in.
Fade Out Time What percentage through the particles life span the particle fades out.
Fade Falloff Coefficient Change the weighting of the fade falloff to either speed up or slow down over time.

Inputs

Name Description Typical Node Input
Colour Control Nodes Control the colours of the particles. Colour Ramp
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

Outputs

There are no outputs from this node.

Notes

Particle caching can generate very large files if a large number of particles is used. The frames per second will also influence the size of the cached file.