XRVisibilityMaskChangeEvent: index property
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The index read-only property of the XRVisibilityMaskChangeEvent interface indicates the index of the current XRView in the XRViewerPose.views array.
For a stereo view, there will be two views in the array. The index property allows you to identify the correct view to re-render, rather than having to re-render all views unnecessarily.
Value
A number.
Examples
This example indicates how you might render a display update for a particular XRView by querying the index value of the event object when a visibilitymaskchange event is fired.
js
xrSession.addEventListener("visibilitymaskchange", (e) => {
renderNewView(e.index);
});
Specifications
| Specification |
|---|
| WebXR Device API # dom-xrvisibilitymaskchangeevent-index |