For an overview on Positional Anchors, click here.
For an overview of Resources, click here.
Overview
Positional Anchors represent a position in the scene.
You can attach a Positional Anchor to a screen message, a sound, a 3D asset, and more. You can also use them with World Proximity Conditions to know if a learner has moved to a certain spot in the VR simulation.
These anchors are customizable as you can create and determine a custom position within the scene either manually or using the VR Editor.
The author is also able to specify an anchor to which this Positional Anchor is attached to.
If an anchor/scene object is specified, the Positional Anchor's position will be relative to the anchor's origin/pivot point. Otherwise, the anchor will be relative to the scene's point of origin.
Other Types of Anchors
Named Anchor (Catalog Type): Anchor that exists inside the APK (predetermined) and is not configurable. Scene Anchors are found here.
Scene Anchor Resource: The Scene Anchor Resource attaches an anchor to a scene object. Anchors represent a position in the scene. This anchor can be used by other resources, such as the Screen Message and Move User resources.
Unlike the Positional Anchor resource, the Scene Anchor resource simply attaches to a scene object within the scene. Its position cannot be configured.
UI Anchor Resource: The UI Anchor Resource attaches an anchor to an object in the scene. Anchors represent a position in the scene. This anchor should be used by UI resources, such as Screen Message or Annotation.
Compared to other anchor resources, this resource provides additional optional fields that can enhance the learner interaction experience with UI panels.
Required Fields
Field Name | Description |
|---|---|
Position | Specifies the position of the anchor. This position can be one of two types: Fixed Position or Relative Position. The Fixed Position setting allows the author to configure the coordinates of the Positional Anchor, as well as its rotation. The Relative Position setting allows the author to configure the angle, distance, and elevation of the Positional Anchor, as well as its rotation. |
Events
Example in the Headset
Creating a Positional Anchor
If you don’t use the VR Editor to create a custom Positional Anchor, you can manually enter in location values. Follow these instructions to create a Positional Anchor.
Adding a Positional Anchor from Catalog to a Script
Let's say I want to add a video at a certain point in the scene in a particular location. I'll use the positional anchor to place the video exactly where I want. I've previously used the VR Editor to create a custom location, instead of manually adding a fixed or relative position.
Open the appropriate script and go to the area where your scene objects are
Use the Catalog icon on the far right to find the positional anchor
Drag and drop the anchor to the Resources pane of the script and save
Open the frame where you want to put the Resource.
Add the appropriate resource for the content (in this example I’ve added a Screen Media Resource to show a video)
Select your custom anchor from the dropdown:
Test in the headset. The Resource should appear at the location of the Positional Anchor:
