Method

This node emits particles in the form of a 3D primitive shape. The Emitter Type parameter defines which shape is used. Particles can be emitted on the surface of the shape or inside the volume of the shape, depending on the Emit On Surface parameter.

If the emitter has an animated transform, emitted particles may track the motion of the primitive so they appear to stick to or follow the moving primitive. The Parent Transform Weight parameter scales this effect.

Example
This image is taken from the “particle_collisions+parenting.dfx” sample project.

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
Emitter Type The shape in which the particles are emitted.
  • Sphere, Particles spawn within a 3D sphere.
  • Box, Particles spawn within a 3D Cube.
  • Cylinder, Particles spawn within a Cylinder.
  • Plane, Particles spawn on a flat, 2D Plane.
  • 2D Grid, Particles spawn along the edges of a 2D grid.
  • 3D Grid, Particles spawn along the edges of a 3D grid.
  • Point, all particles spawn at the same point in 3D space.
Repeating Random Toggle whether the random number generation repeats, and particles are emitted with repeated transform properties.
Seed Choose a seed for the random number generation.
Uniform Distribution Make sure the particle generation is evenly distributed throughout the object.
Emit On Surface Toggle whether particles emit on the surface of the emitter object.
Normal Direction Controls the way particle normals are generated.
  • Emitter Shape, use the underlying primitive shape.
  • Emitter Motion, normals point in the direction of motion of the emitter.
  • Emitter Facing, normals point in the facing direction of the emitter.
Parent Transform Weight How much the transform of the parent affects the transform of the particles.
Parent Transform Weight Life Coeffs How much the particles are affected by the parent nodes transforms at different stages of the particles life cycle. Values 2 and 3 are control points, and are used to control the curve between values

Emission

Name Description
Emitter Active Control how low long each particle exists for.
Life Control how low long each particle exists for.
Randomness How much randomness is added in the particles movement.
Max Particle Count Set a maximum particle count for the emitter.
Respawn Enabled Toggle whether a particle can respawn.
Life Randomness Control the randomness for the life of each particle.
Emission Rate What percentage of the particles are emitted from the emitter per second.

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

The transformation values of thi node will be inherited by its children. Furthermore, Affectors, Shading And Rendering nodes will only be effective to the particles emit by this emitter.