XRFrame: getHitTestResults() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

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

The getHitTestResults() method of the XRFrame interface returns an array of XRHitTestResult objects containing hit test results for a given XRHitTestSource.

Syntax

js
getHitTestResults(hitTestSource)

Parameters

hitTestSource

An XRHitTestSource object that contains hit test subscriptions.

Return value

An array of XRHitTestResult objects.

Examples

Getting hit test results

To request a hit test source, start an XRSession with the hit-test session feature enabled. Next, request a the hit test source with XRSession.requestHitTestSource() and store it for later use in the frame loop. Finally, call getHitTestResults() to obtain the result.

js
const xrSession = navigator.xr.requestSession("immersive-ar", {
  requiredFeatures: ["local", "hit-test"],
});
let hitTestSource = null;
xrSession
  .requestHitTestSource({
    space: viewerSpace, // obtained from xrSession.requestReferenceSpace("viewer");
    offsetRay: new XRRay({ y: 0.5 }),
  })
  .then((viewerHitTestSource) => {
    hitTestSource = viewerHitTestSource;
  });
// frame loop
function onXRFrame(time, xrFrame) {
  let hitTestResults = xrFrame.getHitTestResults(hitTestSource);
  // do things with the hit test results
}

Specifications

Specification
WebXR Hit Test Module
# dom-xrframe-gethittestresults

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
getHitTestResults
Experimental
Chrome – Full support
Chrome 81 (Release date: 2020-04-07)
footnote Full support
Edge – Full support
Edge 81 (Release date: 2020-04-13)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – Full support
Opera 68 (Release date: 2020-04-22)
footnote Full support
Safari – No support
Safari
footnote No support
Chrome Android – Full support
Chrome Android 81 (Release date: 2020-04-07)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 58 (Release date: 2020-05-13)
footnote Full support
Safari on iOS – No support
Safari on iOS
footnote No support
Samsung Internet – Full support
Samsung Internet 13 (Release date: 2020-12-02)
footnote Full support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – No support
WebView on iOS
footnote No support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.

See also