Interaction System

The interaction layer is built on:

• a custom picking backend: univis_picking_backend
• observer callbacks for pointer events
• component state through UInteraction

Core Components

• UInteraction
  • stores the current interaction state
• UInteractionColors
  • maps state changes to background colors

How It Works

1. the backend computes hits
2. Bevy picking emits pointer events
3. observers in interaction/feedback.rs update UInteraction and visuals

Note

Interaction depends on UInteraction being present on the target entity.

Related References

• Support Matrix
• Current Limitations

Related Examples

• widgets_controls
• widgets_inputs
• widgets_containers
• z_order_hierarchy

API Entry Points

• univis_ui_interaction::interaction::feedback::UInteraction
• univis_ui_interaction::interaction::feedback::UInteractionColors
• univis_ui_interaction::interaction::picking::univis_picking_backend

Where To Look Next

• related example: widgets_controls
• related API index: API Reference
• related migration page: Current Limitations