Slider

Float control with configurable range, default value, and optional audio-reactive mode

A Slider exposes a draggable float value to the operator. The operator can move it within the configured range and the Blueprint receives the new value in real time through a bound event.

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Configuration

Sliders are declared inside UICategories on the xrlive_UIpanel component. Set Type to Xrlive Slider and fill in the fields below.

Field	Type	Description
Name	String	Unique ID of the control. Must match exactly (case and spaces) when referenced in Blueprint.
Tooltip	String	Optional helper text shown to the operator on hover.
Audio Reactive	Bool	Controls whether the audio-reactive toggle button on the slider is enabled or disabled in the operator panel. When enabled, the operator can activate or deactivate audio-reactive mode at runtime. When disabled, the button is non-interactive.
Default Value	Float	The initial value the slider holds when the visual loads. Defaults to 0.0.
Min Value	Float	Lower bound of the slider range. Can be negative. Defaults to 0.0.
Max Value	Float	Upper bound of the slider range. Must be greater than Min Value. Defaults to 1.0.

Min and Max are not required to be symmetric. A range of -150 to 300, or 0.5 to 2.0, is perfectly valid. The only requirement is that Max Value is greater than Min Value.

When Audio Reactive is enabled, an additional Audio Reactive Settings section appears with the following fields:

Field	Type	Description
Slider Scale	Float	Multiplier applied to the incoming audio signal before it drives the slider value. A value of 1.0 uses the signal as-is; higher values amplify the response.
Beat Type	Enum	The frequency band the slider reacts to. Options typically include Bass, Mid, and High, depending on the audio engine configuration.
Min Value	Float	Lower bound of the slider range specifically during audio-reactive mode. Independent from the manual Min Value.
Max Value	Float	Upper bound of the slider range specifically during audio-reactive mode. Independent from the manual Max Value.

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Blueprint API

Standard mode

Use this wiring when Audio Reactive is disabled (default).

Call Find Control by Name on the xrlive_UIpanel reference, passing the slider’s Name. Feed the Return Value into Bind Event to On Slider Value. Create a Custom Event and connect it to the Event pin.

Standard slider wiring — Find Control by Name feeds Bind Event to On Slider Value

The custom event exposes two output pins:

Pin	Type	Description
Control Name	String	The name of the slider that fired the event. Useful when one event handles multiple sliders.
Value Modification	Float	The current value of the slider, within the configured Min / Max range.

Audio Reactive mode

When Audio Reactive is enabled on the slider, use Bind Event to On Beat Button Click instead. The event fires in sync with the audio beat signal rather than on operator drag.

Audio-reactive slider wiring — Bind Event to On Beat Button Click replaces the standard bind node

Pin	Type	Description
Beat Data	Struct	Contains the beat signal data delivered by the xRLive audio engine at runtime.

When Audio Reactive is enabled on a slider, both bindings should be wired: Bind Event to On Slider Value handles manual operator input, and Bind Event to On Beat Button Click handles the audio beat signal. The two events fire from independent sources and do not interfere with each other.