Particle 2D Emitter

Updated: 4 Dec 2023

Emits ink into a field from particles.

Method #

This node generates colour/ink based on the positions and movement of particles from a particle system. The particles contribute both ink and velocities to the field.

The outputs from this node are just its transforms, useful for having multiple nodes follow the same motions without controlling each of their transforms individually.

Parameters

Attributes

These properties control the core behaviours of the node.

Parameter	Details
Texture	Add a texture for the particles to use to emit into the field.
Intensity Scale	How strong the emitter is on the field.
Output Velocities	Toggle whether the velocities from the source particle system should be passed into the field.
Velocity Scale	Scale the generated affector velocities.
Particle Size	Control the size of the particles in the field system.
Size Randomness	Add randomness to the size of the particle emission shapes.
Particle X Scale	Scale each particles emission shape on the x axis.
Particle Y Scale	Scale each particles emission shape on the y axis.
Particle Scale Coeffs	TBC
Particle Alpha	Control the alpha value for each particle in the field.
Visible	Control the visibility value for each particle in the field.
Blur Mip Levels	Number of blur amount levels between near and far.
Rotation Randomness	Add randomness to the rotation of the particle emission shapes.
Luminance Randomness	Add randomness to the luminance, or brightness, of the particle emission.
Screen Size Limits	TBC
Motion Blur Amount	The amount of motion blur applied to the field system
Lit	Legacy, due to be removed
Casts Shadows	Legacy, due to be removed
Sort Particles	TBC
Blend Modes	How the emitter blends into the field. See Blend Modes for details. Linear : The emitted ink is blended with the field. Additive : The emitted ink is blended with the field. Subtractive : The emitted ink is subtracted with the field.
Mipmap Enabled	Enables the use of Mipmaps at different distances from the camera.
Emission Mode	When to emit.

Texture Animation

These properties control spritesheet animation for input images which contain an animated texture.

Parameter	Details
Use Texture Animation	Edit whether the texture animation is shown with the rendering.
Animation Rate	Edit whether the texture animation is shown with the rendering.
Num Frames X	Change how many tiles the sprite image will be spread across the x axis.
Num Frames Y	Change how many tiles the sprite image will be spread across the y axis.
Start Frame	The method by which the start frame of the texture animation is chosen. Frame 0 : The animation always starts at frame 0 for every particle. Random : A random frame is chosen as the start frame. Particle Index : The particle’s emission sequence index is used to choose the start frame.

Inputs

Name	Description	Typical Input
Particle Node	The particle root used to generate the field. A particle system must be connected for this node to function.	Particle Root
Sprite Transform Node	Apply the transforms of another node to this node’s particle sprites, relative to its parent.	3D Null
Image Node	Image or video to apply to each particle sprite	Video Loader
Density Nodes	Shading node input for controlling emitter density	Fractal Noise
Temperature Nodes	Shading node input for controlling emitter temperature	Fractal Noise
Fuel Nodes	Shading node input for controlling emitter fuel amount	Fractal Noise
Colour Nodes	Shading node input for controlling emitter colour	Fractal Noise
Velocity Nodes	Shading node input for controlling emitter velocity	Fractal Noise
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