| 1 |
- {"ast":null,"code":"import { Vector3, Quaternion, Matrix, TmpVectors } from \"../../Maths/math.vector.js\";\nimport { Observable } from \"../../Misc/observable.js\";\nimport { BaseSixDofDragBehavior } from \"./baseSixDofDragBehavior.js\";\nimport { TransformNode } from \"../../Meshes/transformNode.js\";\n/**\n * A behavior that when attached to a mesh will allow the mesh to be dragged around based on directions and origin of the pointer's ray\n */\nexport class SixDofDragBehavior extends BaseSixDofDragBehavior {\n constructor() {\n super(...arguments);\n this._sceneRenderObserver = null;\n this._targetPosition = new Vector3(0, 0, 0);\n this._targetOrientation = new Quaternion();\n this._targetScaling = new Vector3(1, 1, 1);\n this._startingPosition = new Vector3(0, 0, 0);\n this._startingOrientation = new Quaternion();\n this._startingScaling = new Vector3(1, 1, 1);\n /**\n * Fires when position is updated\n */\n this.onPositionChangedObservable = new Observable();\n /**\n * The distance towards the target drag position to move each frame. This can be useful to avoid jitter. Set this to 1 for no delay. (Default: 0.2)\n */\n this.dragDeltaRatio = 0.2;\n /**\n * If the object should rotate to face the drag origin\n */\n this.rotateDraggedObject = true;\n /**\n * If `rotateDraggedObject` is set to `true`, this parameter determines if we are only rotating around the y axis (yaw)\n */\n this.rotateAroundYOnly = false;\n /**\n * Should the behavior rotate 1:1 with the motion controller, when one is used.\n */\n this.rotateWithMotionController = true;\n /**\n * Use this flag to update the target but not move the owner node towards the target\n */\n this.disableMovement = false;\n /**\n * Should the object rotate towards the camera when we start dragging it\n */\n this.faceCameraOnDragStart = false;\n }\n /**\n * The name of the behavior\n */\n get name() {\n return \"SixDofDrag\";\n }\n /**\n * Attaches the six DoF drag behavior\n * In XR mode the mesh and its children will have their isNearGrabbable property set to true\n * @param ownerNode The mesh that will be dragged around once attached\n */\n attach(ownerNode) {\n super.attach(ownerNode);\n ownerNode.isNearGrabbable = true;\n // if it has children, make sure they are grabbable too\n ownerNode.getChildMeshes().forEach(m => {\n m.isNearGrabbable = true;\n });\n // Node that will save the owner's transform\n this._virtualTransformNode = new TransformNode(\"virtual_sixDof\", BaseSixDofDragBehavior._virtualScene);\n this._virtualTransformNode.rotationQuaternion = Quaternion.Identity();\n // On every frame move towards target scaling to avoid jitter caused by vr controllers\n this._sceneRenderObserver = ownerNode.getScene().onBeforeRenderObservable.add(() => {\n if (this.currentDraggingPointerIds.length === 1 && this._moving && !this.disableMovement) {\n // 1 pointer only drags mesh\n const deltaToAdd = TmpVectors.Vector3[0];\n deltaToAdd.copyFrom(this._targetPosition).subtractInPlace(ownerNode.absolutePosition).scaleInPlace(this.dragDeltaRatio);\n const deltaToAddTransformed = TmpVectors.Vector3[1];\n deltaToAddTransformed.copyFrom(deltaToAdd);\n // If the node has a parent, transform the delta to local space, so it can be added to the\n // position in local space\n if (ownerNode.parent) {\n const parentRotationMatrixInverse = TmpVectors.Matrix[0];\n ownerNode.parent.absoluteRotationQuaternion.toRotationMatrix(parentRotationMatrixInverse);\n parentRotationMatrixInverse.invert();\n Vector3.TransformNormalToRef(deltaToAdd, parentRotationMatrixInverse, deltaToAddTransformed);\n }\n ownerNode.position.addInPlace(deltaToAddTransformed);\n this.onPositionChangedObservable.notifyObservers({\n position: ownerNode.absolutePosition\n });\n // Only rotate the mesh if it's parent has uniform scaling\n if (!ownerNode.parent || ownerNode.parent.scaling && !ownerNode.parent.scaling.isNonUniformWithinEpsilon(0.001)) {\n const rotationToApply = TmpVectors.Quaternion[0];\n rotationToApply.copyFrom(this._targetOrientation);\n if (ownerNode.parent) {\n const parentRotationInverse = TmpVectors.Quaternion[0];\n parentRotationInverse.copyFrom(ownerNode.parent.absoluteRotationQuaternion);\n parentRotationInverse.invertInPlace();\n parentRotationInverse.multiplyToRef(this._targetOrientation, rotationToApply);\n }\n Quaternion.SlerpToRef(ownerNode.rotationQuaternion, rotationToApply, this.dragDeltaRatio, ownerNode.rotationQuaternion);\n }\n }\n });\n }\n _getPositionOffsetAround(transformationLocalOrigin, scaling, rotation) {\n const translationMatrix = TmpVectors.Matrix[0]; // T\n const translationMatrixInv = TmpVectors.Matrix[1]; // T'\n const rotationMatrix = TmpVectors.Matrix[2]; // R\n const scaleMatrix = TmpVectors.Matrix[3]; // S\n const finalMatrix = TmpVectors.Matrix[4]; // T' x R x S x T\n Matrix.TranslationToRef(transformationLocalOrigin.x, transformationLocalOrigin.y, transformationLocalOrigin.z, translationMatrix); // T\n Matrix.TranslationToRef(-transformationLocalOrigin.x, -transformationLocalOrigin.y, -transformationLocalOrigin.z, translationMatrixInv); // T'\n Matrix.FromQuaternionToRef(rotation, rotationMatrix); // R\n Matrix.ScalingToRef(scaling, scaling, scaling, scaleMatrix);\n translationMatrixInv.multiplyToRef(rotationMatrix, finalMatrix); // T' x R\n finalMatrix.multiplyToRef(scaleMatrix, finalMatrix); // T' x R x S\n finalMatrix.multiplyToRef(translationMatrix, finalMatrix); // T' x R x S x T\n return finalMatrix.getTranslation();\n }\n _onePointerPositionUpdated(worldDeltaPosition, worldDeltaRotation) {\n const pointerDelta = TmpVectors.Vector3[0];\n pointerDelta.setAll(0);\n if (this._dragging === this._dragType.DRAG) {\n if (this.rotateDraggedObject) {\n if (this.rotateAroundYOnly) {\n // Convert change in rotation to only y axis rotation\n Quaternion.RotationYawPitchRollToRef(worldDeltaRotation.toEulerAngles().y, 0, 0, TmpVectors.Quaternion[0]);\n } else {\n TmpVectors.Quaternion[0].copyFrom(worldDeltaRotation);\n }\n TmpVectors.Quaternion[0].multiplyToRef(this._startingOrientation, this._targetOrientation);\n }\n } else if (this._dragging === this._dragType.NEAR_DRAG || this._dragging === this._dragType.DRAG_WITH_CONTROLLER && this.rotateWithMotionController) {\n worldDeltaRotation.multiplyToRef(this._startingOrientation, this._targetOrientation);\n }\n this._targetPosition.copyFrom(this._startingPosition).addInPlace(worldDeltaPosition);\n }\n _twoPointersPositionUpdated() {\n const startingPosition0 = this._virtualMeshesInfo[this.currentDraggingPointerIds[0]].startingPosition;\n const startingPosition1 = this._virtualMeshesInfo[this.currentDraggingPointerIds[1]].startingPosition;\n const startingCenter = TmpVectors.Vector3[0];\n startingPosition0.addToRef(startingPosition1, startingCenter);\n startingCenter.scaleInPlace(0.5);\n const startingVector = TmpVectors.Vector3[1];\n startingPosition1.subtractToRef(startingPosition0, startingVector);\n const currentPosition0 = this._virtualMeshesInfo[this.currentDraggingPointerIds[0]].dragMesh.absolutePosition;\n const currentPosition1 = this._virtualMeshesInfo[this.currentDraggingPointerIds[1]].dragMesh.absolutePosition;\n const currentCenter = TmpVectors.Vector3[2];\n currentPosition0.addToRef(currentPosition1, currentCenter);\n currentCenter.scaleInPlace(0.5);\n const currentVector = TmpVectors.Vector3[3];\n currentPosition1.subtractToRef(currentPosition0, currentVector);\n const scaling = currentVector.length() / startingVector.length();\n const translation = currentCenter.subtract(startingCenter);\n const rotationQuaternion = Quaternion.FromEulerAngles(0, Vector3.GetAngleBetweenVectorsOnPlane(startingVector.normalize(), currentVector.normalize(), Vector3.UpReadOnly), 0);\n const oldParent = this._ownerNode.parent;\n this._ownerNode.setParent(null);\n const positionOffset = this._getPositionOffsetAround(startingCenter.subtract(this._virtualTransformNode.getAbsolutePivotPoint()), scaling, rotationQuaternion);\n this._virtualTransformNode.rotationQuaternion.multiplyToRef(rotationQuaternion, this._ownerNode.rotationQuaternion);\n this._virtualTransformNode.scaling.scaleToRef(scaling, this._ownerNode.scaling);\n this._virtualTransformNode.position.addToRef(translation.addInPlace(positionOffset), this._ownerNode.position);\n this.onPositionChangedObservable.notifyObservers({\n position: this._ownerNode.position\n });\n this._ownerNode.setParent(oldParent);\n }\n _targetDragStart() {\n const pointerCount = this.currentDraggingPointerIds.length;\n if (!this._ownerNode.rotationQuaternion) {\n this._ownerNode.rotationQuaternion = Quaternion.RotationYawPitchRoll(this._ownerNode.rotation.y, this._ownerNode.rotation.x, this._ownerNode.rotation.z);\n }\n const worldPivot = this._ownerNode.getAbsolutePivotPoint();\n if (pointerCount === 1) {\n this._targetPosition.copyFrom(this._ownerNode.absolutePosition);\n this._targetOrientation.copyFrom(this._ownerNode.rotationQuaternion);\n this._targetScaling.copyFrom(this._ownerNode.absoluteScaling);\n if (this.faceCameraOnDragStart && this._scene.activeCamera) {\n const toCamera = TmpVectors.Vector3[0];\n this._scene.activeCamera.position.subtractToRef(worldPivot, toCamera);\n toCamera.normalize();\n const quat = TmpVectors.Quaternion[0];\n if (this._scene.useRightHandedSystem) {\n Quaternion.FromLookDirectionRHToRef(toCamera, new Vector3(0, 1, 0), quat);\n } else {\n Quaternion.FromLookDirectionLHToRef(toCamera, new Vector3(0, 1, 0), quat);\n }\n quat.normalize();\n Quaternion.RotationYawPitchRollToRef(quat.toEulerAngles().y, 0, 0, TmpVectors.Quaternion[0]);\n this._targetOrientation.copyFrom(TmpVectors.Quaternion[0]);\n }\n this._startingPosition.copyFrom(this._targetPosition);\n this._startingOrientation.copyFrom(this._targetOrientation);\n this._startingScaling.copyFrom(this._targetScaling);\n } else if (pointerCount === 2) {\n this._virtualTransformNode.setPivotPoint(new Vector3(0, 0, 0), 0 /* Space.LOCAL */);\n this._virtualTransformNode.position.copyFrom(this._ownerNode.absolutePosition);\n this._virtualTransformNode.scaling.copyFrom(this._ownerNode.absoluteScaling);\n this._virtualTransformNode.rotationQuaternion.copyFrom(this._ownerNode.absoluteRotationQuaternion);\n this._virtualTransformNode.setPivotPoint(worldPivot, 1 /* Space.WORLD */);\n this._resetVirtualMeshesPosition();\n }\n }\n _targetDrag(worldDeltaPosition, worldDeltaRotation) {\n if (this.currentDraggingPointerIds.length === 1) {\n this._onePointerPositionUpdated(worldDeltaPosition, worldDeltaRotation);\n } else if (this.currentDraggingPointerIds.length === 2) {\n this._twoPointersPositionUpdated();\n }\n }\n _targetDragEnd() {\n if (this.currentDraggingPointerIds.length === 1) {\n // We still have 1 active pointer, we must simulate a dragstart with a reseted position/orientation\n this._resetVirtualMeshesPosition();\n const previousFaceCameraFlag = this.faceCameraOnDragStart;\n this.faceCameraOnDragStart = false;\n this._targetDragStart();\n this.faceCameraOnDragStart = previousFaceCameraFlag;\n }\n }\n /**\n * Detaches the behavior from the mesh\n */\n detach() {\n super.detach();\n if (this._ownerNode) {\n this._ownerNode.getScene().onBeforeRenderObservable.remove(this._sceneRenderObserver);\n }\n if (this._virtualTransformNode) {\n this._virtualTransformNode.dispose();\n }\n }\n}","map":{"version":3,"names":["Vector3","Quaternion","Matrix","TmpVectors","Observable","BaseSixDofDragBehavior","TransformNode","SixDofDragBehavior","constructor","arguments","_sceneRenderObserver","_targetPosition","_targetOrientation","_targetScaling","_startingPosition","_startingOrientation","_startingScaling","onPositionChangedObservable","dragDeltaRatio","rotateDraggedObject","rotateAroundYOnly","rotateWithMotionController","disableMovement","faceCameraOnDragStart","name","attach","ownerNode","isNearGrabbable","getChildMeshes","forEach","m","_virtualTransformNode","_virtualScene","rotationQuaternion","Identity","getScene","onBeforeRenderObservable","add","currentDraggingPointerIds","length","_moving","deltaToAdd","copyFrom","subtractInPlace","absolutePosition","scaleInPlace","deltaToAddTransformed","parent","parentRotationMatrixInverse","absoluteRotationQuaternion","toRotationMatrix","invert","TransformNormalToRef","position","addInPlace","notifyObservers","scaling","isNonUniformWithinEpsilon","rotationToApply","parentRotationInverse","invertInPlace","multiplyToRef","SlerpToRef","_getPositionOffsetAround","transformationLocalOrigin","rotation","translationMatrix","translationMatrixInv","rotationMatrix","scaleMatrix","finalMatrix","TranslationToRef","x","y","z","FromQuaternionToRef","ScalingToRef","getTranslation","_onePointerPositionUpdated","worldDeltaPosition","worldDeltaRotation","pointerDelta","setAll","_dragging","_dragType","DRAG","RotationYawPitchRollToRef","toEulerAngles","NEAR_DRAG","DRAG_WITH_CONTROLLER","_twoPointersPositionUpdated","startingPosition0","_virtualMeshesInfo","startingPosition","startingPosition1","startingCenter","addToRef","startingVector","subtractToRef","currentPosition0","dragMesh","currentPosition1","currentCenter","currentVector","translation","subtract","FromEulerAngles","GetAngleBetweenVectorsOnPlane","normalize","UpReadOnly","oldParent","_ownerNode","setParent","positionOffset","getAbsolutePivotPoint","scaleToRef","_targetDragStart","pointerCount","RotationYawPitchRoll","worldPivot","absoluteScaling","_scene","activeCamera","toCamera","quat","useRightHandedSystem","FromLookDirectionRHToRef","FromLookDirectionLHToRef","setPivotPoint","_resetVirtualMeshesPosition","_targetDrag","_targetDragEnd","previousFaceCameraFlag","detach","remove","dispose"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Behaviors/Meshes/sixDofDragBehavior.js"],"sourcesContent":["import { Vector3, Quaternion, Matrix, TmpVectors } from \"../../Maths/math.vector.js\";\nimport { Observable } from \"../../Misc/observable.js\";\nimport { BaseSixDofDragBehavior } from \"./baseSixDofDragBehavior.js\";\nimport { TransformNode } from \"../../Meshes/transformNode.js\";\n/**\n * A behavior that when attached to a mesh will allow the mesh to be dragged around based on directions and origin of the pointer's ray\n */\nexport class SixDofDragBehavior extends BaseSixDofDragBehavior {\n constructor() {\n super(...arguments);\n this._sceneRenderObserver = null;\n this._targetPosition = new Vector3(0, 0, 0);\n this._targetOrientation = new Quaternion();\n this._targetScaling = new Vector3(1, 1, 1);\n this._startingPosition = new Vector3(0, 0, 0);\n this._startingOrientation = new Quaternion();\n this._startingScaling = new Vector3(1, 1, 1);\n /**\n * Fires when position is updated\n */\n this.onPositionChangedObservable = new Observable();\n /**\n * The distance towards the target drag position to move each frame. This can be useful to avoid jitter. Set this to 1 for no delay. (Default: 0.2)\n */\n this.dragDeltaRatio = 0.2;\n /**\n * If the object should rotate to face the drag origin\n */\n this.rotateDraggedObject = true;\n /**\n * If `rotateDraggedObject` is set to `true`, this parameter determines if we are only rotating around the y axis (yaw)\n */\n this.rotateAroundYOnly = false;\n /**\n * Should the behavior rotate 1:1 with the motion controller, when one is used.\n */\n this.rotateWithMotionController = true;\n /**\n * Use this flag to update the target but not move the owner node towards the target\n */\n this.disableMovement = false;\n /**\n * Should the object rotate towards the camera when we start dragging it\n */\n this.faceCameraOnDragStart = false;\n }\n /**\n * The name of the behavior\n */\n get name() {\n return \"SixDofDrag\";\n }\n /**\n * Attaches the six DoF drag behavior\n * In XR mode the mesh and its children will have their isNearGrabbable property set to true\n * @param ownerNode The mesh that will be dragged around once attached\n */\n attach(ownerNode) {\n super.attach(ownerNode);\n ownerNode.isNearGrabbable = true;\n // if it has children, make sure they are grabbable too\n ownerNode.getChildMeshes().forEach((m) => {\n m.isNearGrabbable = true;\n });\n // Node that will save the owner's transform\n this._virtualTransformNode = new TransformNode(\"virtual_sixDof\", BaseSixDofDragBehavior._virtualScene);\n this._virtualTransformNode.rotationQuaternion = Quaternion.Identity();\n // On every frame move towards target scaling to avoid jitter caused by vr controllers\n this._sceneRenderObserver = ownerNode.getScene().onBeforeRenderObservable.add(() => {\n if (this.currentDraggingPointerIds.length === 1 && this._moving && !this.disableMovement) {\n // 1 pointer only drags mesh\n const deltaToAdd = TmpVectors.Vector3[0];\n deltaToAdd.copyFrom(this._targetPosition).subtractInPlace(ownerNode.absolutePosition).scaleInPlace(this.dragDeltaRatio);\n const deltaToAddTransformed = TmpVectors.Vector3[1];\n deltaToAddTransformed.copyFrom(deltaToAdd);\n // If the node has a parent, transform the delta to local space, so it can be added to the\n // position in local space\n if (ownerNode.parent) {\n const parentRotationMatrixInverse = TmpVectors.Matrix[0];\n ownerNode.parent.absoluteRotationQuaternion.toRotationMatrix(parentRotationMatrixInverse);\n parentRotationMatrixInverse.invert();\n Vector3.TransformNormalToRef(deltaToAdd, parentRotationMatrixInverse, deltaToAddTransformed);\n }\n ownerNode.position.addInPlace(deltaToAddTransformed);\n this.onPositionChangedObservable.notifyObservers({ position: ownerNode.absolutePosition });\n // Only rotate the mesh if it's parent has uniform scaling\n if (!ownerNode.parent || (ownerNode.parent.scaling && !ownerNode.parent.scaling.isNonUniformWithinEpsilon(0.001))) {\n const rotationToApply = TmpVectors.Quaternion[0];\n rotationToApply.copyFrom(this._targetOrientation);\n if (ownerNode.parent) {\n const parentRotationInverse = TmpVectors.Quaternion[0];\n parentRotationInverse.copyFrom(ownerNode.parent.absoluteRotationQuaternion);\n parentRotationInverse.invertInPlace();\n parentRotationInverse.multiplyToRef(this._targetOrientation, rotationToApply);\n }\n Quaternion.SlerpToRef(ownerNode.rotationQuaternion, rotationToApply, this.dragDeltaRatio, ownerNode.rotationQuaternion);\n }\n }\n });\n }\n _getPositionOffsetAround(transformationLocalOrigin, scaling, rotation) {\n const translationMatrix = TmpVectors.Matrix[0]; // T\n const translationMatrixInv = TmpVectors.Matrix[1]; // T'\n const rotationMatrix = TmpVectors.Matrix[2]; // R\n const scaleMatrix = TmpVectors.Matrix[3]; // S\n const finalMatrix = TmpVectors.Matrix[4]; // T' x R x S x T\n Matrix.TranslationToRef(transformationLocalOrigin.x, transformationLocalOrigin.y, transformationLocalOrigin.z, translationMatrix); // T\n Matrix.TranslationToRef(-transformationLocalOrigin.x, -transformationLocalOrigin.y, -transformationLocalOrigin.z, translationMatrixInv); // T'\n Matrix.FromQuaternionToRef(rotation, rotationMatrix); // R\n Matrix.ScalingToRef(scaling, scaling, scaling, scaleMatrix);\n translationMatrixInv.multiplyToRef(rotationMatrix, finalMatrix); // T' x R\n finalMatrix.multiplyToRef(scaleMatrix, finalMatrix); // T' x R x S\n finalMatrix.multiplyToRef(translationMatrix, finalMatrix); // T' x R x S x T\n return finalMatrix.getTranslation();\n }\n _onePointerPositionUpdated(worldDeltaPosition, worldDeltaRotation) {\n const pointerDelta = TmpVectors.Vector3[0];\n pointerDelta.setAll(0);\n if (this._dragging === this._dragType.DRAG) {\n if (this.rotateDraggedObject) {\n if (this.rotateAroundYOnly) {\n // Convert change in rotation to only y axis rotation\n Quaternion.RotationYawPitchRollToRef(worldDeltaRotation.toEulerAngles().y, 0, 0, TmpVectors.Quaternion[0]);\n }\n else {\n TmpVectors.Quaternion[0].copyFrom(worldDeltaRotation);\n }\n TmpVectors.Quaternion[0].multiplyToRef(this._startingOrientation, this._targetOrientation);\n }\n }\n else if (this._dragging === this._dragType.NEAR_DRAG || (this._dragging === this._dragType.DRAG_WITH_CONTROLLER && this.rotateWithMotionController)) {\n worldDeltaRotation.multiplyToRef(this._startingOrientation, this._targetOrientation);\n }\n this._targetPosition.copyFrom(this._startingPosition).addInPlace(worldDeltaPosition);\n }\n _twoPointersPositionUpdated() {\n const startingPosition0 = this._virtualMeshesInfo[this.currentDraggingPointerIds[0]].startingPosition;\n const startingPosition1 = this._virtualMeshesInfo[this.currentDraggingPointerIds[1]].startingPosition;\n const startingCenter = TmpVectors.Vector3[0];\n startingPosition0.addToRef(startingPosition1, startingCenter);\n startingCenter.scaleInPlace(0.5);\n const startingVector = TmpVectors.Vector3[1];\n startingPosition1.subtractToRef(startingPosition0, startingVector);\n const currentPosition0 = this._virtualMeshesInfo[this.currentDraggingPointerIds[0]].dragMesh.absolutePosition;\n const currentPosition1 = this._virtualMeshesInfo[this.currentDraggingPointerIds[1]].dragMesh.absolutePosition;\n const currentCenter = TmpVectors.Vector3[2];\n currentPosition0.addToRef(currentPosition1, currentCenter);\n currentCenter.scaleInPlace(0.5);\n const currentVector = TmpVectors.Vector3[3];\n currentPosition1.subtractToRef(currentPosition0, currentVector);\n const scaling = currentVector.length() / startingVector.length();\n const translation = currentCenter.subtract(startingCenter);\n const rotationQuaternion = Quaternion.FromEulerAngles(0, Vector3.GetAngleBetweenVectorsOnPlane(startingVector.normalize(), currentVector.normalize(), Vector3.UpReadOnly), 0);\n const oldParent = this._ownerNode.parent;\n this._ownerNode.setParent(null);\n const positionOffset = this._getPositionOffsetAround(startingCenter.subtract(this._virtualTransformNode.getAbsolutePivotPoint()), scaling, rotationQuaternion);\n this._virtualTransformNode.rotationQuaternion.multiplyToRef(rotationQuaternion, this._ownerNode.rotationQuaternion);\n this._virtualTransformNode.scaling.scaleToRef(scaling, this._ownerNode.scaling);\n this._virtualTransformNode.position.addToRef(translation.addInPlace(positionOffset), this._ownerNode.position);\n this.onPositionChangedObservable.notifyObservers({ position: this._ownerNode.position });\n this._ownerNode.setParent(oldParent);\n }\n _targetDragStart() {\n const pointerCount = this.currentDraggingPointerIds.length;\n if (!this._ownerNode.rotationQuaternion) {\n this._ownerNode.rotationQuaternion = Quaternion.RotationYawPitchRoll(this._ownerNode.rotation.y, this._ownerNode.rotation.x, this._ownerNode.rotation.z);\n }\n const worldPivot = this._ownerNode.getAbsolutePivotPoint();\n if (pointerCount === 1) {\n this._targetPosition.copyFrom(this._ownerNode.absolutePosition);\n this._targetOrientation.copyFrom(this._ownerNode.rotationQuaternion);\n this._targetScaling.copyFrom(this._ownerNode.absoluteScaling);\n if (this.faceCameraOnDragStart && this._scene.activeCamera) {\n const toCamera = TmpVectors.Vector3[0];\n this._scene.activeCamera.position.subtractToRef(worldPivot, toCamera);\n toCamera.normalize();\n const quat = TmpVectors.Quaternion[0];\n if (this._scene.useRightHandedSystem) {\n Quaternion.FromLookDirectionRHToRef(toCamera, new Vector3(0, 1, 0), quat);\n }\n else {\n Quaternion.FromLookDirectionLHToRef(toCamera, new Vector3(0, 1, 0), quat);\n }\n quat.normalize();\n Quaternion.RotationYawPitchRollToRef(quat.toEulerAngles().y, 0, 0, TmpVectors.Quaternion[0]);\n this._targetOrientation.copyFrom(TmpVectors.Quaternion[0]);\n }\n this._startingPosition.copyFrom(this._targetPosition);\n this._startingOrientation.copyFrom(this._targetOrientation);\n this._startingScaling.copyFrom(this._targetScaling);\n }\n else if (pointerCount === 2) {\n this._virtualTransformNode.setPivotPoint(new Vector3(0, 0, 0), 0 /* Space.LOCAL */);\n this._virtualTransformNode.position.copyFrom(this._ownerNode.absolutePosition);\n this._virtualTransformNode.scaling.copyFrom(this._ownerNode.absoluteScaling);\n this._virtualTransformNode.rotationQuaternion.copyFrom(this._ownerNode.absoluteRotationQuaternion);\n this._virtualTransformNode.setPivotPoint(worldPivot, 1 /* Space.WORLD */);\n this._resetVirtualMeshesPosition();\n }\n }\n _targetDrag(worldDeltaPosition, worldDeltaRotation) {\n if (this.currentDraggingPointerIds.length === 1) {\n this._onePointerPositionUpdated(worldDeltaPosition, worldDeltaRotation);\n }\n else if (this.currentDraggingPointerIds.length === 2) {\n this._twoPointersPositionUpdated();\n }\n }\n _targetDragEnd() {\n if (this.currentDraggingPointerIds.length === 1) {\n // We still have 1 active pointer, we must simulate a dragstart with a reseted position/orientation\n this._resetVirtualMeshesPosition();\n const previousFaceCameraFlag = this.faceCameraOnDragStart;\n this.faceCameraOnDragStart = false;\n this._targetDragStart();\n this.faceCameraOnDragStart = previousFaceCameraFlag;\n }\n }\n /**\n * Detaches the behavior from the mesh\n */\n detach() {\n super.detach();\n if (this._ownerNode) {\n this._ownerNode.getScene().onBeforeRenderObservable.remove(this._sceneRenderObserver);\n }\n if (this._virtualTransformNode) {\n this._virtualTransformNode.dispose();\n }\n 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