uments[n]);return this}let t=this.children.indexOf(e);return t!==-1&&(e.parent=null,this.children.splice(t,1),e.dispatchEvent(Np),Ac.child=e,this.dispatchEvent(Ac),Ac.child=null),this}removeFromParent(){let e=this.parent;return e!==null&&e.remove(this),this}clear(){return this.remove(...this.children)}attach(e){return this.updateWorldMatrix(!0,!1),pi.copy(this.matrixWorld).invert(),e.parent!==null&&(e.parent.updateWorldMatrix(!0,!1),pi.multiply(e.parent.matrixWorld)),e.applyMatrix4(pi),e.removeFromParent(),e.parent=this,this.children.push(e),e.updateWorldMatrix(!1,!0),e.dispatchEvent(Bu),Ts.child=e,this.dispatchEvent(Ts),Ts.child=null,this}getObjectById(e){return this.getObjectByProperty("id",e)}getObjectByName(e){return this.getObjectByProperty("name",e)}getObjectByProperty(e,t){if(this[e]===t)return this;for(let n=0,s=this.children.length;n0&&(s.userData=this.userData),s.layers=this.layers.mask,s.matrix=this.matrix.toArray(),s.up=this.up.toArray(),this.pivot!==null&&(s.pivot=this.pivot.toArray()),this.morphTargetDictionary!==void 0&&(s.morphTargetDictionary=Object.assign({},this.morphTargetDictionary)),this.morphTargetInfluences!==void 0&&(s.morphTargetInfluences=this.morphTargetInfluences.slice()),this.isInstancedMesh&&(s.type="InstancedMesh",s.count=this.count,s.instanceMatrix=this.instanceMatrix.toJSON(),this.instanceColor!==null&&(s.instanceColor=this.instanceColor.toJSON())),this.isBatchedMesh&&(s.type="BatchedMesh",s.perObjectFrustumCulled=this.perObjectFrustumCulled,s.sortObjects=this.sortObjects,s.drawRanges=this._drawRanges,s.reservedRanges=this._reservedRanges,s.geometryInfo=this._geometryInfo.map(o=>({...o,boundingBox:o.boundingBox?o.boundingBox.toJSON():void 0,boundingSphere:o.boundingSphere?o.boundingSphere.toJSON():void 0})),s.instanceInfo=this._instanceInfo.map(o=>({...o})),s.availableInstanceIds=this._availableInstanceIds.slice(),s.availableGeometryIds=this._availableGeometryIds.slice(),s.nextIndexStart=this._nextIndexStart,s.nextVertexStart=this._nextVertexStart,s.geometryCount=this._geometryCount,s.maxInstanceCount=this._maxInstanceCount,s.maxVertexCount=this._maxVertexCount,s.maxIndexCount=this._maxIndexCount,s.geometryInitialized=this._geometryInitialized,s.matricesTexture=this._matricesTexture.toJSON(e),s.indirectTexture=this._indirectTexture.toJSON(e),this._colorsTexture!==null&&(s.colorsTe