| 1 |
- {"ast":null,"code":"import { Scene } from \"../scene.js\";\nimport { Observable } from \"../Misc/observable.js\";\nimport { PointerInfo, PointerEventTypes } from \"../Events/pointerEvents.js\";\nimport { PickingInfo } from \"../Collisions/pickingInfo.js\";\nimport { EngineStore } from \"../Engines/engineStore.js\";\nimport { HemisphericLight } from \"../Lights/hemisphericLight.js\";\nimport { Vector3 } from \"../Maths/math.vector.js\";\nimport { Color3 } from \"../Maths/math.color.js\";\n/**\n * Renders a layer on top of an existing scene\n */\nexport class UtilityLayerRenderer {\n /**\n * Gets the camera that is used to render the utility layer (when not set, this will be the last active camera)\n * @param getRigParentIfPossible if the current active camera is a rig camera, should its parent camera be returned\n * @returns the camera that is used when rendering the utility layer\n */\n getRenderCamera(getRigParentIfPossible) {\n if (this._renderCamera) {\n return this._renderCamera;\n } else {\n let activeCam;\n if (this.originalScene.activeCameras && this.originalScene.activeCameras.length > 1) {\n activeCam = this.originalScene.activeCameras[this.originalScene.activeCameras.length - 1];\n } else {\n activeCam = this.originalScene.activeCamera;\n }\n if (getRigParentIfPossible && activeCam && activeCam.isRigCamera) {\n return activeCam.rigParent;\n }\n return activeCam;\n }\n }\n /**\n * Sets the camera that should be used when rendering the utility layer (If set to null the last active camera will be used)\n * @param cam the camera that should be used when rendering the utility layer\n */\n setRenderCamera(cam) {\n this._renderCamera = cam;\n }\n /**\n * @internal\n * Light which used by gizmos to get light shading\n */\n _getSharedGizmoLight() {\n if (!this._sharedGizmoLight) {\n this._sharedGizmoLight = new HemisphericLight(\"shared gizmo light\", new Vector3(0, 1, 0), this.utilityLayerScene);\n this._sharedGizmoLight.intensity = 2;\n this._sharedGizmoLight.groundColor = Color3.Gray();\n }\n return this._sharedGizmoLight;\n }\n /**\n * A shared utility layer that can be used to overlay objects into a scene (Depth map of the previous scene is cleared before drawing on top of it)\n */\n static get DefaultUtilityLayer() {\n if (UtilityLayerRenderer._DefaultUtilityLayer == null) {\n return UtilityLayerRenderer._CreateDefaultUtilityLayerFromScene(EngineStore.LastCreatedScene);\n }\n return UtilityLayerRenderer._DefaultUtilityLayer;\n }\n /**\n * Creates an utility layer, and set it as a default utility layer\n * @param scene associated scene\n * @internal\n */\n static _CreateDefaultUtilityLayerFromScene(scene) {\n UtilityLayerRenderer._DefaultUtilityLayer = new UtilityLayerRenderer(scene);\n UtilityLayerRenderer._DefaultUtilityLayer.originalScene.onDisposeObservable.addOnce(() => {\n UtilityLayerRenderer._DefaultUtilityLayer = null;\n });\n return UtilityLayerRenderer._DefaultUtilityLayer;\n }\n /**\n * A shared utility layer that can be used to embed objects into a scene (Depth map of the previous scene is not cleared before drawing on top of it)\n */\n static get DefaultKeepDepthUtilityLayer() {\n if (UtilityLayerRenderer._DefaultKeepDepthUtilityLayer == null) {\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer = new UtilityLayerRenderer(EngineStore.LastCreatedScene);\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer.utilityLayerScene.autoClearDepthAndStencil = false;\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer.originalScene.onDisposeObservable.addOnce(() => {\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer = null;\n });\n }\n return UtilityLayerRenderer._DefaultKeepDepthUtilityLayer;\n }\n /**\n * Instantiates a UtilityLayerRenderer\n * @param originalScene the original scene that will be rendered on top of\n * @param handleEvents boolean indicating if the utility layer should handle events\n */\n constructor( /** the original scene that will be rendered on top of */\n originalScene, handleEvents = true) {\n this.originalScene = originalScene;\n this._pointerCaptures = {};\n this._lastPointerEvents = {};\n this._sharedGizmoLight = null;\n this._renderCamera = null;\n /**\n * If the picking should be done on the utility layer prior to the actual scene (Default: true)\n */\n this.pickUtilitySceneFirst = true;\n /**\n * If the utility layer should automatically be rendered on top of existing scene\n */\n this.shouldRender = true;\n /**\n * If set to true, only pointer down onPointerObservable events will be blocked when picking is occluded by original scene\n */\n this.onlyCheckPointerDownEvents = true;\n /**\n * If set to false, only pointerUp, pointerDown and pointerMove will be sent to the utilityLayerScene (false by default)\n */\n this.processAllEvents = false;\n /**\n * Set to false to disable picking\n */\n this.pickingEnabled = true;\n /**\n * Observable raised when the pointer moves from the utility layer scene to the main scene\n */\n this.onPointerOutObservable = new Observable();\n // Create scene which will be rendered in the foreground and remove it from being referenced by engine to avoid interfering with existing app\n this.utilityLayerScene = new Scene(originalScene.getEngine(), {\n virtual: true\n });\n this.utilityLayerScene.useRightHandedSystem = originalScene.useRightHandedSystem;\n this.utilityLayerScene._allowPostProcessClearColor = false;\n // Deactivate post processes\n this.utilityLayerScene.postProcessesEnabled = false;\n // Detach controls on utility scene, events will be fired by logic below to handle picking priority\n this.utilityLayerScene.detachControl();\n if (handleEvents) {\n this._originalPointerObserver = originalScene.onPrePointerObservable.add(prePointerInfo => {\n if (!this.utilityLayerScene.activeCamera) {\n return;\n }\n if (!this.pickingEnabled) {\n return;\n }\n if (!this.processAllEvents) {\n if (prePointerInfo.type !== PointerEventTypes.POINTERMOVE && prePointerInfo.type !== PointerEventTypes.POINTERUP && prePointerInfo.type !== PointerEventTypes.POINTERDOWN && prePointerInfo.type !== PointerEventTypes.POINTERDOUBLETAP) {\n return;\n }\n }\n this.utilityLayerScene.pointerX = originalScene.pointerX;\n this.utilityLayerScene.pointerY = originalScene.pointerY;\n const pointerEvent = prePointerInfo.event;\n if (originalScene.isPointerCaptured(pointerEvent.pointerId)) {\n this._pointerCaptures[pointerEvent.pointerId] = false;\n return;\n }\n const getNearPickDataForScene = scene => {\n let scenePick = null;\n if (prePointerInfo.nearInteractionPickingInfo) {\n if (prePointerInfo.nearInteractionPickingInfo.pickedMesh.getScene() == scene) {\n scenePick = prePointerInfo.nearInteractionPickingInfo;\n } else {\n scenePick = new PickingInfo();\n }\n } else if (scene !== this.utilityLayerScene && prePointerInfo.originalPickingInfo) {\n scenePick = prePointerInfo.originalPickingInfo;\n } else {\n let previousActiveCamera = null;\n // If a camera is set for rendering with this layer\n // it will also be used for the ray computation\n // To preserve back compat and because scene.pick always use activeCamera\n // it's substituted temporarily and a new scenePick is forced.\n // otherwise, the ray with previously active camera is always used.\n // It's set back to previous activeCamera after operation.\n if (this._renderCamera) {\n previousActiveCamera = scene._activeCamera;\n scene._activeCamera = this._renderCamera;\n prePointerInfo.ray = null;\n }\n scenePick = prePointerInfo.ray ? scene.pickWithRay(prePointerInfo.ray) : scene.pick(originalScene.pointerX, originalScene.pointerY);\n if (previousActiveCamera) {\n scene._activeCamera = previousActiveCamera;\n }\n }\n return scenePick;\n };\n const utilityScenePick = getNearPickDataForScene(this.utilityLayerScene);\n if (!prePointerInfo.ray && utilityScenePick) {\n prePointerInfo.ray = utilityScenePick.ray;\n }\n // always fire the prepointer observable\n this.utilityLayerScene.onPrePointerObservable.notifyObservers(prePointerInfo);\n // allow every non pointer down event to flow to the utility layer\n if (this.onlyCheckPointerDownEvents && prePointerInfo.type != PointerEventTypes.POINTERDOWN) {\n if (!prePointerInfo.skipOnPointerObservable) {\n this.utilityLayerScene.onPointerObservable.notifyObservers(new PointerInfo(prePointerInfo.type, prePointerInfo.event, utilityScenePick), prePointerInfo.type);\n }\n if (prePointerInfo.type === PointerEventTypes.POINTERUP && this._pointerCaptures[pointerEvent.pointerId]) {\n this._pointerCaptures[pointerEvent.pointerId] = false;\n }\n return;\n }\n if (this.utilityLayerScene.autoClearDepthAndStencil || this.pickUtilitySceneFirst) {\n // If this layer is an overlay, check if this layer was hit and if so, skip pointer events for the main scene\n if (utilityScenePick && utilityScenePick.hit) {\n if (!prePointerInfo.skipOnPointerObservable) {\n this.utilityLayerScene.onPointerObservable.notifyObservers(new PointerInfo(prePointerInfo.type, prePointerInfo.event, utilityScenePick), prePointerInfo.type);\n }\n prePointerInfo.skipOnPointerObservable = true;\n }\n } else {\n const originalScenePick = getNearPickDataForScene(originalScene);\n const pointerEvent = prePointerInfo.event;\n // If the layer can be occluded by the original scene, only fire pointer events to the first layer that hit they ray\n if (originalScenePick && utilityScenePick) {\n // No pick in utility scene\n if (utilityScenePick.distance === 0 && originalScenePick.pickedMesh) {\n if (this.mainSceneTrackerPredicate && this.mainSceneTrackerPredicate(originalScenePick.pickedMesh)) {\n // We touched an utility mesh present in the main scene\n this._notifyObservers(prePointerInfo, originalScenePick, pointerEvent);\n prePointerInfo.skipOnPointerObservable = true;\n } else if (prePointerInfo.type === PointerEventTypes.POINTERDOWN) {\n this._pointerCaptures[pointerEvent.pointerId] = true;\n } else if (prePointerInfo.type === PointerEventTypes.POINTERMOVE || prePointerInfo.type === PointerEventTypes.POINTERUP) {\n if (this._lastPointerEvents[pointerEvent.pointerId]) {\n // We need to send a last pointerup to the utilityLayerScene to make sure animations can complete\n this.onPointerOutObservable.notifyObservers(pointerEvent.pointerId);\n delete this._lastPointerEvents[pointerEvent.pointerId];\n }\n this._notifyObservers(prePointerInfo, originalScenePick, pointerEvent);\n }\n } else if (!this._pointerCaptures[pointerEvent.pointerId] && (utilityScenePick.distance < originalScenePick.distance || originalScenePick.distance === 0)) {\n // We pick something in utility scene or the pick in utility is closer than the one in main scene\n this._notifyObservers(prePointerInfo, utilityScenePick, pointerEvent);\n // If a previous utility layer set this, do not unset this\n if (!prePointerInfo.skipOnPointerObservable) {\n prePointerInfo.skipOnPointerObservable = utilityScenePick.distance > 0;\n }\n } else if (!this._pointerCaptures[pointerEvent.pointerId] && utilityScenePick.distance >= originalScenePick.distance) {\n // We have a pick in both scenes but main is closer than utility\n // We touched an utility mesh present in the main scene\n if (this.mainSceneTrackerPredicate && this.mainSceneTrackerPredicate(originalScenePick.pickedMesh)) {\n this._notifyObservers(prePointerInfo, originalScenePick, pointerEvent);\n prePointerInfo.skipOnPointerObservable = true;\n } else {\n if (prePointerInfo.type === PointerEventTypes.POINTERMOVE || prePointerInfo.type === PointerEventTypes.POINTERUP) {\n if (this._lastPointerEvents[pointerEvent.pointerId]) {\n // We need to send a last pointerup to the utilityLayerScene to make sure animations can complete\n this.onPointerOutObservable.notifyObservers(pointerEvent.pointerId);\n delete this._lastPointerEvents[pointerEvent.pointerId];\n }\n }\n this._notifyObservers(prePointerInfo, utilityScenePick, pointerEvent);\n }\n }\n if (prePointerInfo.type === PointerEventTypes.POINTERUP && this._pointerCaptures[pointerEvent.pointerId]) {\n this._pointerCaptures[pointerEvent.pointerId] = false;\n }\n }\n }\n });\n // As a newly added utility layer will be rendered over the screen last, it's pointer events should be processed first\n if (this._originalPointerObserver) {\n originalScene.onPrePointerObservable.makeObserverTopPriority(this._originalPointerObserver);\n }\n }\n // Render directly on top of existing scene without clearing\n this.utilityLayerScene.autoClear = false;\n this._afterRenderObserver = this.originalScene.onAfterRenderCameraObservable.add(camera => {\n // Only render when the render camera finishes rendering\n if (this.shouldRender && camera == this.getRenderCamera()) {\n this.render();\n }\n });\n this._sceneDisposeObserver = this.originalScene.onDisposeObservable.add(() => {\n this.dispose();\n });\n this._updateCamera();\n }\n _notifyObservers(prePointerInfo, pickInfo, pointerEvent) {\n if (!prePointerInfo.skipOnPointerObservable) {\n this.utilityLayerScene.onPointerObservable.notifyObservers(new PointerInfo(prePointerInfo.type, prePointerInfo.event, pickInfo), prePointerInfo.type);\n this._lastPointerEvents[pointerEvent.pointerId] = true;\n }\n }\n /**\n * Renders the utility layers scene on top of the original scene\n */\n render() {\n this._updateCamera();\n if (this.utilityLayerScene.activeCamera) {\n // Set the camera's scene to utility layers scene\n const oldScene = this.utilityLayerScene.activeCamera.getScene();\n const camera = this.utilityLayerScene.activeCamera;\n camera._scene = this.utilityLayerScene;\n if (camera.leftCamera) {\n camera.leftCamera._scene = this.utilityLayerScene;\n }\n if (camera.rightCamera) {\n camera.rightCamera._scene = this.utilityLayerScene;\n }\n this.utilityLayerScene.render(false);\n // Reset camera's scene back to original\n camera._scene = oldScene;\n if (camera.leftCamera) {\n camera.leftCamera._scene = oldScene;\n }\n if (camera.rightCamera) {\n camera.rightCamera._scene = oldScene;\n }\n }\n }\n /**\n * Disposes of the renderer\n */\n dispose() {\n this.onPointerOutObservable.clear();\n if (this._afterRenderObserver) {\n this.originalScene.onAfterCameraRenderObservable.remove(this._afterRenderObserver);\n }\n if (this._sceneDisposeObserver) {\n this.originalScene.onDisposeObservable.remove(this._sceneDisposeObserver);\n }\n if (this._originalPointerObserver) {\n this.originalScene.onPrePointerObservable.remove(this._originalPointerObserver);\n }\n this.utilityLayerScene.dispose();\n }\n _updateCamera() {\n this.utilityLayerScene.cameraToUseForPointers = this.getRenderCamera();\n this.utilityLayerScene.activeCamera = this.getRenderCamera();\n }\n}\n/** @internal */\nUtilityLayerRenderer._DefaultUtilityLayer = null;\n/** @internal */\nUtilityLayerRenderer._DefaultKeepDepthUtilityLayer = null;","map":{"version":3,"names":["Scene","Observable","PointerInfo","PointerEventTypes","PickingInfo","EngineStore","HemisphericLight","Vector3","Color3","UtilityLayerRenderer","getRenderCamera","getRigParentIfPossible","_renderCamera","activeCam","originalScene","activeCameras","length","activeCamera","isRigCamera","rigParent","setRenderCamera","cam","_getSharedGizmoLight","_sharedGizmoLight","utilityLayerScene","intensity","groundColor","Gray","DefaultUtilityLayer","_DefaultUtilityLayer","_CreateDefaultUtilityLayerFromScene","LastCreatedScene","scene","onDisposeObservable","addOnce","DefaultKeepDepthUtilityLayer","_DefaultKeepDepthUtilityLayer","autoClearDepthAndStencil","constructor","handleEvents","_pointerCaptures","_lastPointerEvents","pickUtilitySceneFirst","shouldRender","onlyCheckPointerDownEvents","processAllEvents","pickingEnabled","onPointerOutObservable","getEngine","virtual","useRightHandedSystem","_allowPostProcessClearColor","postProcessesEnabled","detachControl","_originalPointerObserver","onPrePointerObservable","add","prePointerInfo","type","POINTERMOVE","POINTERUP","POINTERDOWN","POINTERDOUBLETAP","pointerX","pointerY","pointerEvent","event","isPointerCaptured","pointerId","getNearPickDataForScene","scenePick","nearInteractionPickingInfo","pickedMesh","getScene","originalPickingInfo","previousActiveCamera","_activeCamera","ray","pickWithRay","pick","utilityScenePick","notifyObservers","skipOnPointerObservable","onPointerObservable","hit","originalScenePick","distance","mainSceneTrackerPredicate","_notifyObservers","makeObserverTopPriority","autoClear","_afterRenderObserver","onAfterRenderCameraObservable","camera","render","_sceneDisposeObserver","dispose","_updateCamera","pickInfo","oldScene","_scene","leftCamera","rightCamera","clear","onAfterCameraRenderObservable","remove","cameraToUseForPointers"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Rendering/utilityLayerRenderer.js"],"sourcesContent":["import { Scene } from \"../scene.js\";\nimport { Observable } from \"../Misc/observable.js\";\nimport { PointerInfo, PointerEventTypes } from \"../Events/pointerEvents.js\";\nimport { PickingInfo } from \"../Collisions/pickingInfo.js\";\nimport { EngineStore } from \"../Engines/engineStore.js\";\nimport { HemisphericLight } from \"../Lights/hemisphericLight.js\";\nimport { Vector3 } from \"../Maths/math.vector.js\";\nimport { Color3 } from \"../Maths/math.color.js\";\n/**\n * Renders a layer on top of an existing scene\n */\nexport class UtilityLayerRenderer {\n /**\n * Gets the camera that is used to render the utility layer (when not set, this will be the last active camera)\n * @param getRigParentIfPossible if the current active camera is a rig camera, should its parent camera be returned\n * @returns the camera that is used when rendering the utility layer\n */\n getRenderCamera(getRigParentIfPossible) {\n if (this._renderCamera) {\n return this._renderCamera;\n }\n else {\n let activeCam;\n if (this.originalScene.activeCameras && this.originalScene.activeCameras.length > 1) {\n activeCam = this.originalScene.activeCameras[this.originalScene.activeCameras.length - 1];\n }\n else {\n activeCam = this.originalScene.activeCamera;\n }\n if (getRigParentIfPossible && activeCam && activeCam.isRigCamera) {\n return activeCam.rigParent;\n }\n return activeCam;\n }\n }\n /**\n * Sets the camera that should be used when rendering the utility layer (If set to null the last active camera will be used)\n * @param cam the camera that should be used when rendering the utility layer\n */\n setRenderCamera(cam) {\n this._renderCamera = cam;\n }\n /**\n * @internal\n * Light which used by gizmos to get light shading\n */\n _getSharedGizmoLight() {\n if (!this._sharedGizmoLight) {\n this._sharedGizmoLight = new HemisphericLight(\"shared gizmo light\", new Vector3(0, 1, 0), this.utilityLayerScene);\n this._sharedGizmoLight.intensity = 2;\n this._sharedGizmoLight.groundColor = Color3.Gray();\n }\n return this._sharedGizmoLight;\n }\n /**\n * A shared utility layer that can be used to overlay objects into a scene (Depth map of the previous scene is cleared before drawing on top of it)\n */\n static get DefaultUtilityLayer() {\n if (UtilityLayerRenderer._DefaultUtilityLayer == null) {\n return UtilityLayerRenderer._CreateDefaultUtilityLayerFromScene(EngineStore.LastCreatedScene);\n }\n return UtilityLayerRenderer._DefaultUtilityLayer;\n }\n /**\n * Creates an utility layer, and set it as a default utility layer\n * @param scene associated scene\n * @internal\n */\n static _CreateDefaultUtilityLayerFromScene(scene) {\n UtilityLayerRenderer._DefaultUtilityLayer = new UtilityLayerRenderer(scene);\n UtilityLayerRenderer._DefaultUtilityLayer.originalScene.onDisposeObservable.addOnce(() => {\n UtilityLayerRenderer._DefaultUtilityLayer = null;\n });\n return UtilityLayerRenderer._DefaultUtilityLayer;\n }\n /**\n * A shared utility layer that can be used to embed objects into a scene (Depth map of the previous scene is not cleared before drawing on top of it)\n */\n static get DefaultKeepDepthUtilityLayer() {\n if (UtilityLayerRenderer._DefaultKeepDepthUtilityLayer == null) {\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer = new UtilityLayerRenderer(EngineStore.LastCreatedScene);\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer.utilityLayerScene.autoClearDepthAndStencil = false;\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer.originalScene.onDisposeObservable.addOnce(() => {\n UtilityLayerRenderer._DefaultKeepDepthUtilityLayer = null;\n });\n }\n return UtilityLayerRenderer._DefaultKeepDepthUtilityLayer;\n }\n /**\n * Instantiates a UtilityLayerRenderer\n * @param originalScene the original scene that will be rendered on top of\n * @param handleEvents boolean indicating if the utility layer should handle events\n */\n constructor(\n /** the original scene that will be rendered on top of */\n originalScene, handleEvents = true) {\n this.originalScene = originalScene;\n this._pointerCaptures = {};\n this._lastPointerEvents = {};\n this._sharedGizmoLight = null;\n this._renderCamera = null;\n /**\n * If the picking should be done on the utility layer prior to the actual scene (Default: true)\n */\n this.pickUtilitySceneFirst = true;\n /**\n * If the utility layer should automatically be rendered on top of existing scene\n */\n this.shouldRender = true;\n /**\n * If set to true, only pointer down onPointerObservable events will be blocked when picking is occluded by original scene\n */\n this.onlyCheckPointerDownEvents = true;\n /**\n * If set to false, only pointerUp, pointerDown and pointerMove will be sent to the utilityLayerScene (false by default)\n */\n this.processAllEvents = false;\n /**\n * Set to false to disable picking\n */\n this.pickingEnabled = true;\n /**\n * Observable raised when the pointer moves from the utility layer scene to the main scene\n */\n this.onPointerOutObservable = new Observable();\n // Create scene which will be rendered in the foreground and remove it from being referenced by engine to avoid interfering with existing app\n this.utilityLayerScene = new Scene(originalScene.getEngine(), { virtual: true });\n this.utilityLayerScene.useRightHandedSystem = originalScene.useRightHandedSystem;\n this.utilityLayerScene._allowPostProcessClearColor = false;\n // Deactivate post processes\n this.utilityLayerScene.postProcessesEnabled = false;\n // Detach controls on utility scene, events will be fired by logic below to handle picking priority\n this.utilityLayerScene.detachControl();\n if (handleEvents) {\n this._originalPointerObserver = originalScene.onPrePointerObservable.add((prePointerInfo) => {\n if (!this.utilityLayerScene.activeCamera) {\n return;\n }\n if (!this.pickingEnabled) {\n return;\n }\n if (!this.processAllEvents) {\n if (prePointerInfo.type !== PointerEventTypes.POINTERMOVE &&\n prePointerInfo.type !== PointerEventTypes.POINTERUP &&\n prePointerInfo.type !== PointerEventTypes.POINTERDOWN &&\n prePointerInfo.type !== PointerEventTypes.POINTERDOUBLETAP) {\n return;\n }\n }\n this.utilityLayerScene.pointerX = originalScene.pointerX;\n this.utilityLayerScene.pointerY = originalScene.pointerY;\n const pointerEvent = prePointerInfo.event;\n if (originalScene.isPointerCaptured(pointerEvent.pointerId)) {\n this._pointerCaptures[pointerEvent.pointerId] = false;\n return;\n }\n const getNearPickDataForScene = (scene) => {\n let scenePick = null;\n if (prePointerInfo.nearInteractionPickingInfo) {\n if (prePointerInfo.nearInteractionPickingInfo.pickedMesh.getScene() == scene) {\n scenePick = prePointerInfo.nearInteractionPickingInfo;\n }\n else {\n scenePick = new PickingInfo();\n }\n }\n else if (scene !== this.utilityLayerScene && prePointerInfo.originalPickingInfo) {\n scenePick = prePointerInfo.originalPickingInfo;\n }\n else {\n let previousActiveCamera = null;\n // If a camera is set for rendering with this layer\n // it will also be used for the ray computation\n // To preserve back compat and because scene.pick always use activeCamera\n // it's substituted temporarily and a new scenePick is forced.\n // otherwise, the ray with previously active camera is always used.\n // It's set back to previous activeCamera after operation.\n if (this._renderCamera) {\n previousActiveCamera = scene._activeCamera;\n scene._activeCamera = this._renderCamera;\n prePointerInfo.ray = null;\n }\n scenePick = prePointerInfo.ray ? scene.pickWithRay(prePointerInfo.ray) : scene.pick(originalScene.pointerX, originalScene.pointerY);\n if (previousActiveCamera) {\n scene._activeCamera = previousActiveCamera;\n }\n }\n return scenePick;\n };\n const utilityScenePick = getNearPickDataForScene(this.utilityLayerScene);\n if (!prePointerInfo.ray && utilityScenePick) {\n prePointerInfo.ray = utilityScenePick.ray;\n }\n // always fire the prepointer observable\n this.utilityLayerScene.onPrePointerObservable.notifyObservers(prePointerInfo);\n // allow every non pointer down event to flow to the utility layer\n if (this.onlyCheckPointerDownEvents && prePointerInfo.type != PointerEventTypes.POINTERDOWN) {\n if (!prePointerInfo.skipOnPointerObservable) {\n this.utilityLayerScene.onPointerObservable.notifyObservers(new PointerInfo(prePointerInfo.type, prePointerInfo.event, utilityScenePick), prePointerInfo.type);\n }\n if (prePointerInfo.type === PointerEventTypes.POINTERUP && this._pointerCaptures[pointerEvent.pointerId]) {\n this._pointerCaptures[pointerEvent.pointerId] = false;\n }\n return;\n }\n if (this.utilityLayerScene.autoClearDepthAndStencil || this.pickUtilitySceneFirst) {\n // If this layer is an overlay, check if this layer was hit and if so, skip pointer events for the main scene\n if (utilityScenePick && utilityScenePick.hit) {\n if (!prePointerInfo.skipOnPointerObservable) {\n this.utilityLayerScene.onPointerObservable.notifyObservers(new PointerInfo(prePointerInfo.type, prePointerInfo.event, utilityScenePick), prePointerInfo.type);\n }\n prePointerInfo.skipOnPointerObservable = true;\n }\n }\n else {\n const originalScenePick = getNearPickDataForScene(originalScene);\n const pointerEvent = prePointerInfo.event;\n // If the layer can be occluded by the original scene, only fire pointer events to the first layer that hit they ray\n if (originalScenePick && utilityScenePick) {\n // No pick in utility scene\n if (utilityScenePick.distance === 0 && originalScenePick.pickedMesh) {\n if (this.mainSceneTrackerPredicate && this.mainSceneTrackerPredicate(originalScenePick.pickedMesh)) {\n // We touched an utility mesh present in the main scene\n this._notifyObservers(prePointerInfo, originalScenePick, pointerEvent);\n prePointerInfo.skipOnPointerObservable = true;\n }\n else if (prePointerInfo.type === PointerEventTypes.POINTERDOWN) {\n this._pointerCaptures[pointerEvent.pointerId] = true;\n }\n else if (prePointerInfo.type === PointerEventTypes.POINTERMOVE || prePointerInfo.type === PointerEventTypes.POINTERUP) {\n if (this._lastPointerEvents[pointerEvent.pointerId]) {\n // We need to send a last pointerup to the utilityLayerScene to make sure animations can complete\n this.onPointerOutObservable.notifyObservers(pointerEvent.pointerId);\n delete this._lastPointerEvents[pointerEvent.pointerId];\n }\n this._notifyObservers(prePointerInfo, originalScenePick, pointerEvent);\n }\n }\n else if (!this._pointerCaptures[pointerEvent.pointerId] && (utilityScenePick.distance < originalScenePick.distance || originalScenePick.distance === 0)) {\n // We pick something in utility scene or the pick in utility is closer than the one in main scene\n this._notifyObservers(prePointerInfo, utilityScenePick, pointerEvent);\n // If a previous utility layer set this, do not unset this\n if (!prePointerInfo.skipOnPointerObservable) {\n prePointerInfo.skipOnPointerObservable = utilityScenePick.distance > 0;\n }\n }\n else if (!this._pointerCaptures[pointerEvent.pointerId] && utilityScenePick.distance >= originalScenePick.distance) {\n // We have a pick in both scenes but main is closer than utility\n // We touched an utility mesh present in the main scene\n if (this.mainSceneTrackerPredicate && this.mainSceneTrackerPredicate(originalScenePick.pickedMesh)) {\n this._notifyObservers(prePointerInfo, originalScenePick, pointerEvent);\n prePointerInfo.skipOnPointerObservable = true;\n }\n else {\n if (prePointerInfo.type === PointerEventTypes.POINTERMOVE || prePointerInfo.type === PointerEventTypes.POINTERUP) {\n if (this._lastPointerEvents[pointerEvent.pointerId]) {\n // We need to send a last pointerup to the utilityLayerScene to make sure animations can complete\n this.onPointerOutObservable.notifyObservers(pointerEvent.pointerId);\n delete this._lastPointerEvents[pointerEvent.pointerId];\n }\n }\n this._notifyObservers(prePointerInfo, utilityScenePick, pointerEvent);\n }\n }\n if (prePointerInfo.type === PointerEventTypes.POINTERUP && this._pointerCaptures[pointerEvent.pointerId]) {\n this._pointerCaptures[pointerEvent.pointerId] = false;\n }\n }\n }\n });\n // As a newly added utility layer will be rendered over the screen last, it's pointer events should be processed first\n if (this._originalPointerObserver) {\n originalScene.onPrePointerObservable.makeObserverTopPriority(this._originalPointerObserver);\n }\n }\n // Render directly on top of existing scene without clearing\n this.utilityLayerScene.autoClear = false;\n this._afterRenderObserver = this.originalScene.onAfterRenderCameraObservable.add((camera) => {\n // Only render when the render camera finishes rendering\n if (this.shouldRender && camera == this.getRenderCamera()) {\n this.render();\n }\n });\n this._sceneDisposeObserver = this.originalScene.onDisposeObservable.add(() => {\n this.dispose();\n });\n this._updateCamera();\n }\n _notifyObservers(prePointerInfo, pickInfo, pointerEvent) {\n if (!prePointerInfo.skipOnPointerObservable) {\n this.utilityLayerScene.onPointerObservable.notifyObservers(new PointerInfo(prePointerInfo.type, prePointerInfo.event, pickInfo), prePointerInfo.type);\n this._lastPointerEvents[pointerEvent.pointerId] = true;\n }\n }\n /**\n * Renders the utility layers scene on top of the original scene\n */\n render() {\n this._updateCamera();\n if (this.utilityLayerScene.activeCamera) {\n // Set the camera's scene to utility layers scene\n const oldScene = this.utilityLayerScene.activeCamera.getScene();\n const camera = this.utilityLayerScene.activeCamera;\n camera._scene = this.utilityLayerScene;\n if (camera.leftCamera) {\n camera.leftCamera._scene = this.utilityLayerScene;\n }\n if (camera.rightCamera) {\n camera.rightCamera._scene = this.utilityLayerScene;\n }\n this.utilityLayerScene.render(false);\n // Reset camera's scene back to original\n camera._scene = 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