Notch Notch Manual 0.9.23
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Primitive Affector

Primitive Affector

Apply forces to particles from primitive shapes.



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.


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.

Position XMove along the local x-axis.
Position YMove along the local y-axis.
Position ZMove along the local z-axis.
Rotation HeadingRotate around the local y-axis.
Rotation PitchRotate around the local x-axis.
Rotation BankRotate around the local z-axis.
Scale XScale along the local x-axis.
Scale YScale along the local y-axis.
Scale ZScale along the local z-axis.

Toggle which transform channels should be inherited from the parent node. By default, all transforms will be inherited.

Position XToggle inheritance of the X Position from the parent.
Position YToggle inheritance of the Y Position from the parent.
Position ZToggle inheritance of the Z Position from the parent.
Rotation HeadingToggle inheritance of the Rotation Heading from the parent.
Rotation PitchToggle inheritance of the Rotation Pitch from the parent.
Rotation BankToggle inheritance of the Rotation Bank from the parent.
Scale XToggle inheritance of the X Scale from the parent.
Scale YToggle inheritance of the Y Scale from the parent.
Scale ZToggle inheritance of the Z Scale from the parent.
World Position OnlyInherit the world position from the parent only, rotation and scale will be ignored. Overrides above properties.
Inherit TimeToggle inheritance of time from the parent.

These properties control the core behaviours of the node.

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 ModeControl whether the particles should be attracted or repelled by the primitive.
Use ColoursToggle whether to use the colours input by the mesh.
RadiusAlter the outer radius at which the affector is no longer effective.
RandomnessApplies a random offset to the position the particles move towards or away from.
Velocity RandomnessAmount by which the resultant velocity is randomised.
Velocity ScaleScale the strength of the affectors velocity on the particles.
WeightHow strong an effect has on the particles.
Colour WeightControls how much the colour value generated by the affector is blended with the particle’s current colour.
StickinessControls how much the particle sticks to the surface of the shape once it reaches it.
Life Effect CoeffsHow 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.

Blend ModeChange how the particle affector changes with the particles current changes.


NameDescriptionTypical Input
Affected EmittersChoose which particle emitters can be affected by the affector.Primitive Emitter
Procedural FalloffUse the distance field from a procedural system to vary how strong the affector is.Procedural Root
Transform ModifiersApply the transforms of another node to this node.Null
Target NodeModifiy the rotations of the node to always direct the z axis towards the input.Null
Local Transform OverrideApply the transforms of another node to this node, relative to its parent.Null