This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The angularAcceleration read-only property of the VRPose interface returns an array representing the angular acceleration vector of the VRDisplay at the current VRPose.timestamp, in meters per second per second.
In other words, the current acceleration of the sensor's rotation around the x, y, and z axes.
Syntax
var myAngularAcceleration = VRPose.angularAcceleration;
Value
A Float32Array, or null if the VR sensor is not able to provide angular acceleration information.
Examples
// rendering loop for a VR scene
function drawVRScene() {
// WebVR: Request the next frame of the animation
vrSceneFrame = vrDisplay.requestAnimationFrame(drawVRScene);
// Populate frameData with the data of the next frame to display
vrDisplay.getFrameData(frameData);
// Retrieve the angular acceleration values for use in rendering
// curFramePose is a VRPose object
var curFramePose = frameData.pose;
var angAcc = curFramePose.angularAcceleration;
var aax = angAcc[0];
var aay = angAcc[1];
var aaz = angAcc[2];
// render the scene
...
// WebVR: submit the rendered frame to the VR display
vrDisplay.submitFrame();
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebVR 1.1 The definition of 'angularAcceleration' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
| Feature | Android | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic Support | No | (Yes)4 | ? | ? | No | ? | ? |
1. Only works on desktop in an experimental version of Chrome (other builds won't return any devices when Navigator.getVRDisplays() is invoked).
2. , this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
3. Currently only Windows support is enabled by default. Mac support is available in Firefox Nightly.
4. Currently supported only by Google Daydream.
See also
- WebVR API homepage
- MozVr.com — demos, downloads, and other resources from the Mozilla VR team.