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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 position read-only property of the VRPose interface returns the position of the VRDisplay at the current VRPose.timestamp as a 3D vector.
The coordinate system is as follows:
- Positive X is to the user’s right.
- Positive Y is up.
- Positive Z is behind the user.
Positions are measured in meters from an origin point — this point is either the position the sensor was first read at, or the position of the sensor at the point that VRDisplay.resetPose() was last called.
Note: By default, all positions are given as a sitting space position. Transforming this point with VRStageParameters.sittingToStandingTransform — when you are working with a room display for example — converts this to a standing space position.
Syntax
var myPosition = VRPose.position;
Value
A Float32Array, or null if the VR sensor is not able to provide position data.
Note: User agents may provide emulated position values through techniques such as neck modeling; when doing so they should still report VRDisplayCapabilities.hasPosition as false.
Examples
TBD.
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebVR The definition of 'position' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | No support | No support | No support |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|
| Basic support | No support | (Yes) | No support | No support | No support | No support |
See also
- WebVR API homepage.
- MozVr.com — demos, downloads, and other resources from the Mozilla VR team.