Add turbulence to particle movement using this module.
For some properties in this section, you can use different modes to set their value. For information on the modes you can use, refer to Vary Particle System properties over time.
Property | Function |
---|---|
Separate Axes | Control the strength and remapping independently on each axis. |
Strength | A curve that defines how strong the noise effect is on a particle over its lifetime. Higher values will make particles move faster and further. |
Frequency | Low values create soft, smooth noise, and high values create rapidly changing noise. This controls how often the particles change their direction of travel, and how abrupt those changes of direction are. |
Scroll Speed | Move the noise field over time to cause more unpredictable and erratic particle movement. |
Damping | When enabled, strength is proportional to frequency. Tying these values together means the noise field can be scaled while maintaining the same behaviour, but at a different size. |
Octaves | Specify how many layers of overlapping noise are combined to produce the final noise values. Using more layers gives richer, more interesting noise, but significantly adds to the performance cost. |
Octave Multiplier | For each additional noise layer, reduce the strength by this proportion. |
Octave Scale | For each additional noise layer, adjust the frequency by this multiplier. |
Quality | Lower quality settings reduce the performance cost significantly, but also affect how interesting the noise looks. Use the lowest quality that gives you the desired behavior for maximum performance. |
Remap | Remap the final noise values into a different range. |
Remap Curve | The curve that describes how the final noise values are transformed. For example, you could use this to pick out the lower ranges of the noise field and ignore the higher ranges by creating a curve that starts high and ends at zero. |
Position Amount | A multiplier to control how much the noise affects particle positions. |
Rotation Amount | A multiplier to control how much the noise affects particle rotations, in degrees per second. |
Size Amount | A multiplier to control how much the noise affects particle sizes. |
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.