XRSession: select event

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安全上下文
此特征只可用于安全上下文 (HTTPS)，在某些或所有支持浏览器 .

The WebXR event select is sent to an XRSession when one of the session's input sources has completed a primary action . Examples of comon kinds of primary action are users pressing triggers or buttons, tapping a touchpad, speaking a command, or performing a recognizable gesture when using a video tracking system or handheld controller with an accelerometer.

冒泡	Yes
可取消	No
接口	`XRInputSourceEvent`
事件处理程序特性	`onselect`

For details on how the selectstart , select ，和 selectend events work, and how you should react to them, see Primary actions in Inputs and input sources .

范例

以下范例使用 addEventListener() to set up a handler for the select event. The handler fetches the pose representing the target ray for tracked-pointer inputs and sends the pose's transform to a function called myHandleSelectWithRay() .

xrSession.addEventListener("select", event => {
  if (event.inputSource.targetRayMode == "tracked-pointer") {
    let targetRayPose = event.frame.getPose(event.inputSource.targetRaySpace,
                              myRefSpace);
    if (targetRayPose) {
      myHandleSelectWithRay(targetRayPose.transform);
    }
  }
});

You can of course also set up a handler for select events by setting the XRSession 对象的 onselect event handler property to a function that handles the event:

xrSession.onselect = event => {
  if (event.inputSource.targetRayMode == "tracked-pointer") {
    let targetRayPose = event.frame.getPose(event.inputSource.targetRaySpace,
                              myRefSpace);
    if (targetRayPose) {
      myHandleSelectWithRay(targetRayPose.transform);
    }
  }
};

规范

规范	状态	注释
WebXR 设备 API The definition of 'select event' in that specification.	工作草案	初始定义。

浏览器兼容性

更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`select` event	Chrome 79	Edge 79	Firefox 不支持 No	IE 不支持 No	Opera 不支持 No	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 79	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 11.2

图例

完整支持
不支持

元数据

最后修改： Mar 3, 2020

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