World Tracking & Image Targets

If you want World Tracking or Image Targets, add the xrweb component to your a-scene:

<a-scene xrconfig xrweb>

xrweb Attributes (all optional)

Component	Type	Default	Description
scale	String	'responsive'	Either 'responsive' or 'absolute'. 'responsive' will return values so that the camera on frame 1 is at the origin defined via XR8.XrController.updateCameraProjectionMatrix(). 'absolute' will return the camera, image targets, etc in meters. The default is 'responsive'. When using 'absolute' the x-position, z-position, and rotation of the starting pose will respect the parameters set in XR8.XrController.updateCameraProjectionMatrix() once scale has been estimated. The y-position will depend on the camera's physical height from the ground plane.
disableWorldTracking	Boolean	false	If true, turn off SLAM tracking for efficiency.

Notes:

• xrweb and xrface cannot be used at the same time.
• xrweb and xrlayers can be used at the same time. You must use xrconfig when doing so.
  • Best practice is to always use xrconfig; however, if you use xrweb without xrface or xrlayers or xrconfig, then xrconfig will be added automatically. When that happens all attributes which were set on xrweb will be passed along to xrconfig.
• cameraDirection: World tracking (SLAM) is only supported on the back camera. If you are using the front camera, you must disable world tracking by setting disableWorldTracking: true.
• World tracking (SLAM) is only supported on mobile devices.

xrwebComponent()

XR8.AFrame.xrwebComponent()

Creates an A-Frame component which can be registered with AFRAME.registerComponent(). This, however, generally won't need to be called directly. On 8th Wall Web script load, this component will be registered automatically if it is detected that A-Frame has loaded (i.e if window.AFRAME exists).

window.AFRAME.registerComponent('xrweb', XR8.AFrame.xrwebComponent())