Double Bubble
Overview
The Double Bubble is an extension of the 3D Bubble Cursor but can instead select multiple objects at once with the bubble. After selection, a 2D bubble cursor menu pops up which allows you to select the individual object that you want.
Source paper of the technique:
Bacim, F. (2015). “Increasing Selection Accuracy and Speed through Progressive Refinement.” Doctoral dissertation, Virginia Polytechnic Institute and State University.
Use by manually attaching
To manually attach the Double Bubble to the Camerarig VR components if the auto-attach fails for each hand:
- Drag onto Bubble Cursor 3D script:
- Left and Right VR Controllers onto Left and Right Controller
- Camera eye onto the camera head
Inspector parameters
For Bubble Cursor 3D Script:
| Parameter | Default | Description |
|---|---|---|
| Intractable Layer | PickableObject | The layers that the technique can interact with |
| Interaction Type | Selection | When set to manipulation after selection of the object via the 2D menu Bubble Cursor 3D can move objects via parenting. When pure selection it will just send an event that it has selected and place the object into a public variable. |
| Controller Picked | Right_Controller | The controller used by this technique |
| Cursor speed | 20 | Speed that cursors depth moves |
For Selectable Objects Script:
| Parameter | Default | Description |
|---|---|---|
| Radius bubble | RadiusBubble2D | The 2D Radius bubble for the 2D menu |
For Bubble Selection Script:
| Parameter | Default | Description |
|---|---|---|
| Intractable Layer | PickableObject | The layers that the technique can interact with |
| Currently Hovering | None | The object the bubble is currently encapsulating |
| Selected Object() | Empty | Invoked when object is selected |
| Dropped Object() | Empty | Invoked when object is Dropped |
| Hovered() | Empty | Event Invoked when an object is hovered over |
| UnHovered() | Empty | Event Invoked when an object ceases being hovered over |
Test/Example scenes Major example scene under:
- Assets/Technique Example Scenes/Scenes/DoubleBubbleExample