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XRFrame: fillJointRadii() method

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

The fillJointRadii() method of the XRFrame interface populates a Float32Array with radii for a list of hand joint spaces and returns true if successful for all spaces.

Syntax

js

fillJointRadii(jointSpaces, radii)

Parameters

jointSpaces

An array of XRJointSpace objects for which to obtain the radii.

radii

A Float32Array that is populated with the radii of the jointSpaces.

Return value

A boolean indicating if all of the spaces have a valid pose.

Exceptions

TypeError

Thrown if the length of jointSpaces is larger than the number of elements in radii.

Examples

Obtaining radii for all joints of a hand

To efficiently get all radii for all 25 joints of each XRHand, you can use the fillJointRadii() method.

js

let radii1 = new Float32Array(25);
let radii2 = new Float32Array(25);

function onXRFrame(xrFrame, renderer) {
  let hand1 = xrFrame.session.inputSources[0].hand;
  xrFrame.fillJointRadii(hand1.values(), radii1);
  let hand2 = xrFrame.session.inputSources[1].hand;
  xrFrame.fillJointRadii(hand2.values(), radii2);
}

Specifications

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
fillJointRadii No
93–111Hololens 2 only.
No No No No No No No No No No

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/XRFrame/fillJointRadii