VRStageParameters.sittingToStandingTransform - Web APIs 编辑

Experimental

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

The sittingToStandingTransform read-only property of the VRStageParameters interface contains a matrix that transforms the sitting-space view matrices of VRFrameData to standing-space.

Basically, this can be passed into your WebGL code to transform the rendered view from a sitting to standing view.

Syntax

var myTransform = vrStageParametersInstance.sittingToStandingTransform;

Value

A 16-element Float32Array containing the components of a 4×4 transform matrix.

Examples

var info = document.querySelector('p');
var vrDisplay;

navigator.getVRDisplays().then(function(displays) {
  vrDisplay = displays[0];
  var stageParams = vrDisplay.stageParameters;
  // stageParams is a VRStageParameters object

  if(stageParams === null) {
    info.textContent = 'Your VR Hardware does not support room-scale experiences.'
  } else {
    info.innerHTML = '<strong>Display stage parameters</strong>'
                 + '<br>Sitting to standing transform: ' + stageParams.sittingToStandingTransform
                 + '<br>Play area width (m): ' + stageParams.sizeX
                 + '<br>Play area depth (m): ' + stageParams.sizeY
  }
});

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• WebVR API homepage
• MozVr.com — demos, downloads, and other resources from the Mozilla VR team.