> For the complete documentation index, see [llms.txt](https://docs.verge.aero/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verge.aero/drone-show-software/verge-design-studio/light-animation/shape-chase.md).

# Shape Chase

A moving lighting effect that travels along the splines of the element.

| Parameter         | Type   | Description                                                                                                                                                                                                                                                                                                                                                                                            |
| ----------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Intensity Mapping | On/Off | How lighting intensity values are distributed across an element                                                                                                                                                                                                                                                                                                                                        |
| Pattern           |        | <p>Square - The chase advances in discrete steps with abrupt on–off transitions.<br><br>Sine - The chase follows a smooth, sinusoidal curve.<br><br>Sawtooth - The chase ramps steadily in one direction and then resets abruptly.<br><br>Triangle - The chase increases and decreases linearly in a symmetrical pattern.</p>                                                                          |
| Chase Cycle Time  |        | The duration required for a chase pattern to complete one full pass through its sequence.                                                                                                                                                                                                                                                                                                              |
| Off Time          |        | The duration during which the light remains inactive between chase steps.                                                                                                                                                                                                                                                                                                                              |
| Amplitude         |        | The maximum range or strength of variation in a lighting effect.                                                                                                                                                                                                                                                                                                                                       |
| Reverse Direction | On/Off | Reverses the direction of the Chase.                                                                                                                                                                                                                                                                                                                                                                   |
| Unit Type         |        | <p>Hz - the strobe or modulation rate in cycles per second. Higher Hz values produce faster, more intense flickering, while lower values create slower, more deliberate pulses.<br><br>BPM - the strobe or modulation rate in musical beats per minute. This allows lighting effects to synchronize naturally with music or rhythmic cues, aligning pulses to the tempo of a track or performance.</p> |
| Unit              |        | Amount applied to the unit type                                                                                                                                                                                                                                                                                                                                                                        |
| Pulse Size        |        | The spatial width or extent of a pulse as it travels through an element.                                                                                                                                                                                                                                                                                                                               |

<figure><img src="/files/rHjvEmCMVzhImbNmPtat" alt="" width="352"><figcaption><p>Inspector for shape chase lighting event</p></figcaption></figure>

<figure><img src="/files/qKyduwne6xvtqB6yojOd" alt="" width="375"><figcaption><p>Shape chase lighting event</p></figcaption></figure>