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XRTransientInputHitTestSource

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The XRTransientInputHitTestSource interface of the WebXR Device API handles transient input hit test subscriptions. You can get an XRTransientInputHitTestSource object by calling the XRSession.requestHitTestSourceForTransientInput().

This object doesn't itself contain transient input hit test results, but it is used to compute hit tests for each XRFrame by calling XRFrame.getHitTestResultsForTransientInput(), which returns XRTransientInputHitTestResult objects.

Instance properties

None.

Instance methods

XRTransientInputHitTestSource.cancel() Experimental: Unsubscribes from the transient input hit test.

Examples

Getting an `XRTransientInputHitTestSource` object for a session

Use the XRSession.requestHitTestSourceForTransientInput() method to get a transient input hit test source.

const xrSession = navigator.xr.requestSession("immersive-ar", {
  requiredFeatures: ["local", "hit-test"],
});

let transientHitTestSource = null;

xrSession
  .requestHitTestSourceForTransientInput({
    profile: "generic-touchscreen",
    offsetRay: new XRRay(),
  })
  .then((touchScreenHitTestSource) => {
    transientHitTestSource = touchScreenHitTestSource;
  });

// frame loop
function onXRFrame(time, xrFrame) {
  let hitTestResults = xrFrame.getHitTestResultsForTransientInput(
    transientHitTestSource,
  );

  // do things with the transient hit test results
}

Unsubscribe from a transient input hit test

To unsubscribe from a transient input hit test source, use the XRTransientInputHitTestSource.cancel() method. Since the object will no longer be usable, you can clean up and set the XRTransientInputHitTestSource object to null.

transientHitTestSource.cancel();
transientHitTestSource = null;

Specifications

Specification
WebXR Hit Test Module # transient-input-hit-test-source-interface

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`XRTransientInputHitTestSource`	81	81	No	No	68	No	No	81	No	58	No	13.0
`cancel`	81	81	No	No	68	No	No	81	No	58	No	13.0