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- {"ast":null,"code":"import { WebXRFeaturesManager, WebXRFeatureName } from \"../webXRFeaturesManager.js\";\nimport { WebXRAbstractFeature } from \"./WebXRAbstractFeature.js\";\nimport { Observable } from \"../../Misc/observable.js\";\nimport { Vector3, TmpVectors } from \"../../Maths/math.vector.js\";\nimport { Ray } from \"../../Culling/ray.js\";\n/**\n * The WebXR Eye Tracking feature grabs eye data from the device and provides it in an easy-access format.\n * Currently only enabled for BabylonNative applications.\n */\nexport class WebXREyeTracking extends WebXRAbstractFeature {\n /**\n * Creates a new instance of the XR eye tracking feature.\n * @param _xrSessionManager An instance of WebXRSessionManager.\n */\n constructor(_xrSessionManager) {\n super(_xrSessionManager);\n /**\n * This observable will notify registered observers when eye tracking starts\n */\n this.onEyeTrackingStartedObservable = new Observable();\n /**\n * This observable will notify registered observers when eye tracking ends\n */\n this.onEyeTrackingEndedObservable = new Observable();\n /**\n * This observable will notify registered observers on each frame that has valid tracking\n */\n this.onEyeTrackingFrameUpdateObservable = new Observable();\n this._eyeTrackingStartListener = event => {\n this._latestEyeSpace = event.gazeSpace;\n this._gazeRay = new Ray(Vector3.Zero(), Vector3.Forward());\n this.onEyeTrackingStartedObservable.notifyObservers(this._gazeRay);\n };\n this._eyeTrackingEndListener = () => {\n this._latestEyeSpace = null;\n this._gazeRay = null;\n this.onEyeTrackingEndedObservable.notifyObservers();\n };\n this.xrNativeFeatureName = \"eye-tracking\";\n if (this._xrSessionManager.session) {\n this._init();\n } else {\n this._xrSessionManager.onXRSessionInit.addOnce(() => {\n this._init();\n });\n }\n }\n /**\n * Dispose this feature and all of the resources attached.\n */\n dispose() {\n super.dispose();\n this._xrSessionManager.session.removeEventListener(\"eyetrackingstart\", this._eyeTrackingStartListener);\n this._xrSessionManager.session.removeEventListener(\"eyetrackingend\", this._eyeTrackingEndListener);\n this.onEyeTrackingStartedObservable.clear();\n this.onEyeTrackingEndedObservable.clear();\n this.onEyeTrackingFrameUpdateObservable.clear();\n }\n /**\n * Returns whether the gaze data is valid or not\n * @returns true if the data is valid\n */\n get isEyeGazeValid() {\n return !!this._gazeRay;\n }\n /**\n * Get a reference to the gaze ray. This data is valid while eye tracking persists, and will be set to null when gaze data is no longer available\n * @returns a reference to the gaze ray if it exists and is valid, returns null otherwise.\n */\n getEyeGaze() {\n return this._gazeRay;\n }\n _onXRFrame(frame) {\n if (!this.attached || !frame) {\n return;\n }\n if (this._latestEyeSpace && this._gazeRay) {\n const pose = frame.getPose(this._latestEyeSpace, this._xrSessionManager.referenceSpace);\n if (pose) {\n this._gazeRay.origin.set(pose.transform.position.x, pose.transform.position.y, pose.transform.position.z).scaleInPlace(this._xrSessionManager.worldScalingFactor);\n const quat = pose.transform.orientation;\n TmpVectors.Quaternion[0].set(quat.x, quat.y, quat.z, quat.w);\n if (!this._xrSessionManager.scene.useRightHandedSystem) {\n this._gazeRay.origin.z *= -1;\n TmpVectors.Quaternion[0].z *= -1;\n TmpVectors.Quaternion[0].w *= -1;\n Vector3.LeftHandedForwardReadOnly.rotateByQuaternionToRef(TmpVectors.Quaternion[0], this._gazeRay.direction);\n } else {\n Vector3.RightHandedForwardReadOnly.rotateByQuaternionToRef(TmpVectors.Quaternion[0], this._gazeRay.direction);\n }\n this.onEyeTrackingFrameUpdateObservable.notifyObservers(this._gazeRay);\n }\n }\n }\n _init() {\n // Only supported by BabylonNative\n if (this._xrSessionManager.isNative) {\n this._xrSessionManager.session.addEventListener(\"eyetrackingstart\", this._eyeTrackingStartListener);\n this._xrSessionManager.session.addEventListener(\"eyetrackingend\", this._eyeTrackingEndListener);\n }\n }\n}\n/**\n * The module's name\n */\nWebXREyeTracking.Name = WebXRFeatureName.EYE_TRACKING;\n/**\n * The (Babylon) version of this module.\n * This is an integer representing the implementation version.\n * This number does not correspond to the WebXR specs version\n */\nWebXREyeTracking.Version = 1;\nWebXRFeaturesManager.AddWebXRFeature(WebXREyeTracking.Name, xrSessionManager => {\n return () => new WebXREyeTracking(xrSessionManager);\n}, WebXREyeTracking.Version, false);","map":{"version":3,"names":["WebXRFeaturesManager","WebXRFeatureName","WebXRAbstractFeature","Observable","Vector3","TmpVectors","Ray","WebXREyeTracking","constructor","_xrSessionManager","onEyeTrackingStartedObservable","onEyeTrackingEndedObservable","onEyeTrackingFrameUpdateObservable","_eyeTrackingStartListener","event","_latestEyeSpace","gazeSpace","_gazeRay","Zero","Forward","notifyObservers","_eyeTrackingEndListener","xrNativeFeatureName","session","_init","onXRSessionInit","addOnce","dispose","removeEventListener","clear","isEyeGazeValid","getEyeGaze","_onXRFrame","frame","attached","pose","getPose","referenceSpace","origin","set","transform","position","x","y","z","scaleInPlace","worldScalingFactor","quat","orientation","Quaternion","w","scene","useRightHandedSystem","LeftHandedForwardReadOnly","rotateByQuaternionToRef","direction","RightHandedForwardReadOnly","isNative","addEventListener","Name","EYE_TRACKING","Version","AddWebXRFeature","xrSessionManager"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/XR/features/WebXREyeTracking.js"],"sourcesContent":["import { WebXRFeaturesManager, WebXRFeatureName } from \"../webXRFeaturesManager.js\";\nimport { WebXRAbstractFeature } from \"./WebXRAbstractFeature.js\";\nimport { Observable } from \"../../Misc/observable.js\";\nimport { Vector3, TmpVectors } from \"../../Maths/math.vector.js\";\nimport { Ray } from \"../../Culling/ray.js\";\n/**\n * The WebXR Eye Tracking feature grabs eye data from the device and provides it in an easy-access format.\n * Currently only enabled for BabylonNative applications.\n */\nexport class WebXREyeTracking extends WebXRAbstractFeature {\n /**\n * Creates a new instance of the XR eye tracking feature.\n * @param _xrSessionManager An instance of WebXRSessionManager.\n */\n constructor(_xrSessionManager) {\n super(_xrSessionManager);\n /**\n * This observable will notify registered observers when eye tracking starts\n */\n this.onEyeTrackingStartedObservable = new Observable();\n /**\n * This observable will notify registered observers when eye tracking ends\n */\n this.onEyeTrackingEndedObservable = new Observable();\n /**\n * This observable will notify registered observers on each frame that has valid tracking\n */\n this.onEyeTrackingFrameUpdateObservable = new Observable();\n this._eyeTrackingStartListener = (event) => {\n this._latestEyeSpace = event.gazeSpace;\n this._gazeRay = new Ray(Vector3.Zero(), Vector3.Forward());\n this.onEyeTrackingStartedObservable.notifyObservers(this._gazeRay);\n };\n this._eyeTrackingEndListener = () => {\n this._latestEyeSpace = null;\n this._gazeRay = null;\n this.onEyeTrackingEndedObservable.notifyObservers();\n };\n this.xrNativeFeatureName = \"eye-tracking\";\n if (this._xrSessionManager.session) {\n this._init();\n }\n else {\n this._xrSessionManager.onXRSessionInit.addOnce(() => {\n this._init();\n });\n }\n }\n /**\n * Dispose this feature and all of the resources attached.\n */\n dispose() {\n super.dispose();\n this._xrSessionManager.session.removeEventListener(\"eyetrackingstart\", this._eyeTrackingStartListener);\n this._xrSessionManager.session.removeEventListener(\"eyetrackingend\", this._eyeTrackingEndListener);\n this.onEyeTrackingStartedObservable.clear();\n this.onEyeTrackingEndedObservable.clear();\n this.onEyeTrackingFrameUpdateObservable.clear();\n }\n /**\n * Returns whether the gaze data is valid or not\n * @returns true if the data is valid\n */\n get isEyeGazeValid() {\n return !!this._gazeRay;\n }\n /**\n * Get a reference to the gaze ray. This data is valid while eye tracking persists, and will be set to null when gaze data is no longer available\n * @returns a reference to the gaze ray if it exists and is valid, returns null otherwise.\n */\n getEyeGaze() {\n return this._gazeRay;\n }\n _onXRFrame(frame) {\n if (!this.attached || !frame) {\n return;\n }\n if (this._latestEyeSpace && this._gazeRay) {\n const pose = frame.getPose(this._latestEyeSpace, this._xrSessionManager.referenceSpace);\n if (pose) {\n this._gazeRay.origin.set(pose.transform.position.x, pose.transform.position.y, pose.transform.position.z).scaleInPlace(this._xrSessionManager.worldScalingFactor);\n const quat = pose.transform.orientation;\n TmpVectors.Quaternion[0].set(quat.x, quat.y, quat.z, quat.w);\n if (!this._xrSessionManager.scene.useRightHandedSystem) {\n this._gazeRay.origin.z *= -1;\n TmpVectors.Quaternion[0].z *= -1;\n TmpVectors.Quaternion[0].w *= -1;\n Vector3.LeftHandedForwardReadOnly.rotateByQuaternionToRef(TmpVectors.Quaternion[0], this._gazeRay.direction);\n }\n else {\n Vector3.RightHandedForwardReadOnly.rotateByQuaternionToRef(TmpVectors.Quaternion[0], this._gazeRay.direction);\n }\n this.onEyeTrackingFrameUpdateObservable.notifyObservers(this._gazeRay);\n }\n }\n }\n _init() {\n // Only supported by BabylonNative\n if (this._xrSessionManager.isNative) {\n this._xrSessionManager.session.addEventListener(\"eyetrackingstart\", this._eyeTrackingStartListener);\n this._xrSessionManager.session.addEventListener(\"eyetrackingend\", this._eyeTrackingEndListener);\n }\n }\n}\n/**\n * The module's name\n */\nWebXREyeTracking.Name = WebXRFeatureName.EYE_TRACKING;\n/**\n * The (Babylon) version of this module.\n * This is an integer representing the implementation version.\n * This number does not correspond to the WebXR specs version\n */\nWebXREyeTracking.Version = 1;\nWebXRFeaturesManager.AddWebXRFeature(WebXREyeTracking.Name, (xrSessionManager) => {\n return () => new WebXREyeTracking(xrSessionManager);\n}, WebXREyeTracking.Version, 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