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Interactions - Slide System

The Slide System allows presenters in a HoloMIT session to show and control a slide presentation on a virtual screen. This interaction is designed to be synchronized across all users in the session.

Overview​

The core logic for the slide system is located in Assets\Pilots\Common\Interaction\SlidesSystem\, driven primarily by the SlideController.cs script.

Key Features​

  • Network Synchronized: Slide transitions are broadcasted across the network using NetworkTrigger components (nextSlideTrigger, backSlideTrigger, startFinishSlideTrigger), ensuring all participants see the same slide simultaneously.
  • Input System Integration: It binds directly to the new Unity Input System via the HoloMITControls asset, listening for specific actions to navigate the presentation (Next, Back, Start/Finish).
  • Material-Based Rendering: Slides are essentially an array of Texture2D images. The controller dynamically updates the _MainTex property of a specific material (SlideMaterial) applied to a virtual screen GameObject.

Setup Requirements​

To properly configure the Slide System in a scene, the SlideController requires:

  1. Slides Array: An array of Texture2D objects assigned in the Unity Inspector representing the presentation slides in order.
  2. Screen Object: A GameObject with a MeshRenderer to act as the projection screen.
  3. Slide Material: A material named SlideMaterial must be available in a Resources folder, which the script loads and instantiates at runtime to avoid modifying the base asset.

Usage​

The presentation is controlled through the bound input actions:

  • Start/Finish: Toggles the visibility of the screen. When starting, it always resets to the first slide.
  • Next Slide: Advances the slide index, clamping at the last slide.
  • Back Slide: Decreases the slide index, clamping at the first slide.

Inspector view of a properly configured SlideController.

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