Absolute and Relative Mapping
Overview
Absolute and relative mapping is in the form of a Raycast (However It could be adapted to a simple hand technique). When you press a set button the movement of the virtual controller relative to your real controller is scaled with a ration of 10:1. By doing this you can be precise when selecting small or distant objects with the ray. This is because the distance you have to move your hand across an object is amplified 10x due to the ratio.
Source paper of the technique:
Kopper, R., D. Bowman, M. Silva, and R. McMahan (2010). “A Human Motor Behavior Model for Distal Pointing Tasks.” International Journal of Human-Computer Studies 68(10): 603–615.
Use by manually attaching
To manually attach the ARM to the Camerarig VR components if the auto-attach fails for each hand:
- Drag onto ARMLaser script:
- Relevant controller onto The controlelr
Inspector parameters
For ARMLaser Script:
| Parameter | Default | Description |
|---|---|---|
| Interaction Layers | PickableObject | The layers that the technique can interact with |
| Interaction Type | Selection | When selected an object will go into a public variable for the player to use. Currently nothing happens on manipulation. |
| Laser Prefab | Laser | The laser projected from the controller |
| The Model | Model | The controller model which is a child of the controller to be cloned when ARM is in use |
| Last Selected Object | None | The last selected object by ARM |
| Currently Pointing At | None | Object hovered over by ARM |
| Selected Object() | Empty | Event Invoked when an object is selected |
| 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/ARMExample