Ramp Modulator Node

ParticleRampModulators01

Ramp modulators allow you to change particle behavior over the lifetime on the particle on a curve or ramp. You can put any vector or float from the emitter in the attribute to remap field.

Ramp Modulator Valid Parameters

Below is a list of valid parameters for the Ramp Modulator Node. These parameters appear in their drop down menu in attribute to remap.

Note

You can clear the values using the top if the drop down menu which is empty

Ramp Modulator Valid Parameters

Description

Scalar Parameters

objectIndex
radius
opacity
ageNormalized
mass
age
lifespan
selfCollisionRadius
collisionRadius

Vector parameters

scale
rotation
up
velocity
aim
position
color

Note

Point Instancers do not support the Opacity and Color parameter

Ramp Modulator UI

Ramp Modulator UI

Description

Ramp Time

Ramp normalizes the lifetime of the particle from 0 to 1.

Float parameters

Use Scalar Ramp attribute to remap emitter float parameters to ramp.

Vector parameters

Use Color Ramp attribute to remap emitter vector parameters or colors to ramp.

Adding A key or point

Left Click the ramp or color ramp.

Removing a key or point

Double left click the ramp point or color key.

Moving a key or point

Left click select and type in the scalar position and value field.
Left click select and drag a point.

Changing interpolation

Left click select the key and change the interpolation in the dropdown field.
Interpolation works from the point selected.

Color Picker

Clicking on the color value field causes a color picker to appear. Use this to select colors or change vectors.

Enter

Values and colors do not apply until the values are entered.
ParticleRampModulatorsParams01

Ramp Modulator Node Parameters

Ramp Modulator

This group controls if the ramp modulator is on and its mode

Ramp Modulator

Description

Active

Toggle: Controls whether the Ramp Modulator active or inactive.

Mode

Dropdown controls how the ramp modulator changes the particle. Defaults to Multiply
over: Overrides whatever settings you had in the emitter.
add: Additive settings. Ramp adds to values
multiply: Multiply settings. Ramp multiplies to values.

Ramp Modulator Scalar Ramp

ParticleRampModulatorsScalar01

Use parameters in this group when you want to change float parameters with a ramp over the normalized lifetime of the particle.

Scalar Ramp

Description

attribute to remap

Name of scalar attribute to remap. (float)

scalar ramp

Use this to create points for a curve/ramp.
This curve represents the normalized lifetime of the particle.

position

This field shows the point’s time/location on the curve.

value

This field shows the point’s value on the curve.

interpolation

Linear: A direct line from point to point.
Smooth: An eased line from point to point.

Ramp Modulator Color Ramp

ParticleRampModulatorsColor01

Use parameters in this group when you want to change vector parameters with a ramp over the normalized lifetime of the particle.

Color Ramp

Description

attribute to remap

Name of color attribute to remap. (float)

scalar ramp

Use this to create keys for a curve/ramp.
This color range represents the normalized lifetime of the particle.

position

This field shows the key’s time/location on the range.

value

This field shows the key’s value on the range.
Selecting this field will pop up a color picker.

interpolation

Linear: A direct line from point to point.
Smooth: An eased line from point to point.

Ramp Modulator Color Picker

Use the color picker to select colors and set vector ranges. This will not update until you select enter.

ParticleColorPicker01

Color Picker

Description

Color UI

Click on color to select color.
Values do not apply until entered.

R, G, B

Use this to key in Red, Green and Blue values
Use fields to set Vector parameters. (X, Y, Z)

H, S, V

Use fields to set Hue, Saturation and Value values.

Hex field

Enter Hexadecimal code values here.