---
title: "22 - Particle > Streaklet Group"
url: "https://help.maxon.net/rg/en-us/Content/html/22-Form-particle-streaklet.html"
section_path: "Particles and 3D > Form > 22 - Particle > Streaklet Group"
description: "Streaklet is a long-exposure, light painting effect controlled by the Streaklet group. The base particle type is theStreaklet particle, which is a large …"
---

# 22 - Particle > Streaklet Group

Form

### Particle Group > Streaklet Group

Streaklet is a long-exposure, light painting effect controlled by the Streaklet group. The base particle type is the[Streaklet particle](https://help.maxon.net/rg/en-us/Content/html/20-Form-particle-type.html.md), which is a large particle dot surrounded by smaller particle dots. Note that the options in the Streaklet group are only available when Streaklet is chosen from the Particle Type pop-up.

|  |  |
| --- | --- |
| ![rgsg1](https://help.maxon.net/rg/en-us/Content/Resources/Images/rgsg1_trapcode-form.png) | ![rgsg2](https://help.maxon.net/rg/en-us/Content/Resources/Images/rgsg2_trapcode-form.png) |

*The Streaklet group(left) and the Streaklet option in Particle Type (right).*

**Streaklet Random Seed:** Randomizes where the small particle dots are positioned. Changing the Random Seed value can quickly give a different look for Streaklet particles.

![streak-seed2sm](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-seed2sm_trapcode-form.png)\
![streak-seed1sm](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-seed1sm_trapcode-form.png)\
*An illustration of different Random Seed values.*

**Number of Streaks:** Sets the number of smaller particle dots around the main dot. High values make more streaks, which give a more detailed look. Lower values make fewer streaks and give a simpler look.

![streak-num5sm](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-num5sm_trapcode-form.png)\
![streak-num20sm](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-num20sm_trapcode-form.png)\
*Number of Streaks at 5 (left) and 20 (right).*

**Streak Size:** Controls the size of the main particle dot. Low values create thinner, more separated streaks. High values create thicker, more overlapping streaks. A value of 0 turns off the streak.

![streak-size30sm](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-size30sm_trapcode-form.png)\
![streak-size50sm](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-size50sm_trapcode-form.png)\
*Streak Size at 30 (left) and 50 (right).*

**Streaklet presets:** Using the [Box – Strings](https://help.maxon.net/rg/en-us/Content/html/16-Form-base-form.html.md) base form, some creativity, and a little scripting, you can use Streaklets to create interesting light-filled compositions like the ones below. Several presets using the Box - Strings base form and Streaklets can be found in the Designer's Lines Presets.

![streak-preset1](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-preset1_trapcode-form.jpg)\
![streak-preset2](https://help.maxon.net/rg/en-us/Content/Resources/Images/streak-preset2_trapcode-form.jpg)\
*Some options using Box - Strings as a base form and Streaklet as the Particle Type.*