Experimental
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The linearAcceleration
read-only property of the VRPose
interface returns an array representing the linear 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, along the x
, y
, and z
axes.
Syntax
var myLinearAcceleration = VRPose.linearAcceleration;
Value
A Float32Array
, or null
if the VR sensor is not able to provide linear acceleration data.
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 linear acceleration values for use in rendering
// curFramePose is a VRPose object
var curFramePose = frameData.pose;
var linAcc = curFramePose.linearAcceleration;
var lax = linAcc[0];
var lay = linAcc[1];
var laz = linAcc[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 'linearAcceleration' in that specification. |
Draft | Initial definition |
Browser compatibility
BCD tables only load in the browser
See also
- WebVR API homepage.
- https://mixedreality.mozilla.org/ — demos, downloads, and other resources from the Mozilla VR team.