XRSession: squeeze 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 squeeze is sent to an XRSession when one of the session's input sources has completed a primary squeeze 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	`onsqueeze`

For details on how the squeezestart , squeeze ，和 squeezeend events work, and how you should react to them, see Primary squeeze actions in Inputs and input sources .

范例

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

This code treats the squeeze as an instantaneous action that doesn't involve tracking an ongoing activity. If you need to track a squeeze action that isn't instantaneous, listen for the squeezestart and squeezeend events to sense when the squeeze action begins and ends.

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

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

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

规范

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

浏览器兼容性

No compatibility data found. Please contribute data for "api.XRSession.squeeze_event" (depth: 1) to the MDN 兼容性数据存储库 .

元数据

最后修改： Mar 3, 2020

WebXR 设备 API
XRSession
特性
方法
事件
1. selectend
2. selectstart
3. squeeze
4. squeezeend
5. squeezestart
继承：
1. EventTarget
Related pages for WebXR Device API

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