Primitive Affector
Apply forces to particles from primitive shapes.
Primitive Affector
Method #
This node is used to attract or repel particles from the surface of the selected primitive type. This is typically used to make particles form into a given shape. Particles will use the closest point on the primitive’s surface to move towards or away from; this may be offset randomly using the Randomness attribute to create a noisier shape.
All nodes connected to this node are treated as if flowing to the parent node, and inherits any transformation changes along the chain.
Parameters
These properties control the 3D transforms of the node. Transforms will generally be inherited by child nodes, although they can be ignored through the Inherit Transform Channels attributes.
Parameter Details
Position X Move along the local x-axis.
Position Y Move along the local y-axis.
Position Z Move along the local z-axis.
Rotation Heading Rotate around the local y-axis.
Rotation Pitch Rotate around the local x-axis.
Rotation Bank Rotate around the local z-axis.
Scale X Scale along the local x-axis.
Scale Y Scale along the local y-axis.
Scale Z Scale along the local z-axis.
Toggle which transform channels should be inherited from the parent node. By default, all transforms will be inherited.
Parameter Details
Position X Toggle inheritance of the X Position from the parent.
Position Y Toggle inheritance of the Y Position from the parent.
Position Z Toggle inheritance of the Z Position from the parent.
Rotation Heading Toggle inheritance of the Rotation Heading from the parent.
Rotation Pitch Toggle inheritance of the Rotation Pitch from the parent.
Rotation Bank Toggle inheritance of the Rotation Bank from the parent.
Scale X Toggle inheritance of the X Scale from the parent.
Scale Y Toggle inheritance of the Y Scale from the parent.
Scale Z Toggle inheritance of the Z Scale from the parent.
World Position Only Inherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties.
Inherit Time Toggle inheritance of time from the parent.
These properties control the core behaviours of the node.
Parameter Details
Primitive Type Choose which primitive shape to use.
- Wireframe Sphere. Affect from the wireframe of a sphere.|
- Sphere : Affect from a sphere.
- Box : Affect from a box.
- Cylinder : Affect from a cylinder,
- Plane : Affect from a plane.
- 2D Grid : Affect from a 2D grid.
- 3D Grid : Affect from a 3D grid.
- 2D Noise : Affect from random 2D noise.
Velocity Mode Control whether the particles should be attracted or repelled by the primitive.
Use Colours Toggle whether to use the colours input by the mesh.
Radius Alter the outer radius at which the affector is no longer effective.
Randomness Applies a random offset to the position the particles move towards or away from.
Velocity Randomness Amount by which the resultant velocity is randomised.
Velocity Scale Scale the strength of the affectors velocity on the particles.
Weight How strong an effect has on the particles.
Colour Weight Controls how much the colour value generated by the affector is blended with the particle’s current colour.
Stickiness Controls how much the particle sticks to the surface of the shape once it reaches it.
Life Effect Coeffs How much the particles are affected by the affector at different stages of the particles life cycle. Values 1 and 2 are control points used to control a bezier curve between values 0 and 3.
How the primitive colours are blended with the particle colours.
Parameter Details
Blend Mode Change how the particle affector changes with the particles current changes.
Inputs
These properties control the 3D transforms of the node. Transforms will generally be inherited by child nodes, although they can be ignored through the Inherit Transform Channels attributes.
| Parameter | Details |
|---|---|
| Position X | Move along the local x-axis. |
| Position Y | Move along the local y-axis. |
| Position Z | Move along the local z-axis. |
| Rotation Heading | Rotate around the local y-axis. |
| Rotation Pitch | Rotate around the local x-axis. |
| Rotation Bank | Rotate around the local z-axis. |
| Scale X | Scale along the local x-axis. |
| Scale Y | Scale along the local y-axis. |
| Scale Z | Scale along the local z-axis. |
Toggle which transform channels should be inherited from the parent node. By default, all transforms will be inherited.
| Parameter | Details |
|---|---|
| Position X | Toggle inheritance of the X Position from the parent. |
| Position Y | Toggle inheritance of the Y Position from the parent. |
| Position Z | Toggle inheritance of the Z Position from the parent. |
| Rotation Heading | Toggle inheritance of the Rotation Heading from the parent. |
| Rotation Pitch | Toggle inheritance of the Rotation Pitch from the parent. |
| Rotation Bank | Toggle inheritance of the Rotation Bank from the parent. |
| Scale X | Toggle inheritance of the X Scale from the parent. |
| Scale Y | Toggle inheritance of the Y Scale from the parent. |
| Scale Z | Toggle inheritance of the Z Scale from the parent. |
| World Position Only | Inherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties. |
| Inherit Time | Toggle inheritance of time from the parent. |
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Primitive Type | Choose which primitive shape to use.
|
| Velocity Mode | Control whether the particles should be attracted or repelled by the primitive. |
| Use Colours | Toggle whether to use the colours input by the mesh. |
| Radius | Alter the outer radius at which the affector is no longer effective. |
| Randomness | Applies a random offset to the position the particles move towards or away from. |
| Velocity Randomness | Amount by which the resultant velocity is randomised. |
| Velocity Scale | Scale the strength of the affectors velocity on the particles. |
| Weight | How strong an effect has on the particles. |
| Colour Weight | Controls how much the colour value generated by the affector is blended with the particle’s current colour. |
| Stickiness | Controls how much the particle sticks to the surface of the shape once it reaches it. |
| Life Effect Coeffs | How much the particles are affected by the affector at different stages of the particles life cycle. Values 1 and 2 are control points used to control a bezier curve between values 0 and 3. |
How the primitive colours are blended with the particle colours.
| Parameter | Details |
|---|---|
| Blend Mode | Change how the particle affector changes with the particles current changes. |
| Name | Description | Typical Input |
|---|---|---|
| Affected Emitters | Choose which particle emitters can be affected by the affector. | Primitive Emitter |
| Procedural Falloff | Use the distance field from a procedural system to vary how strong the affector is. | Procedural Root |
| 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 |