fuse-code/src/sdk/cover/index.js

import mitt from 'mitt'

import axios from 'axios' //{ axios } from '@/api'

/* 
山东
http://192.168.0.135:14000/#/vrmode

 */
let requestLoadCount = 0

export const enter = (dom, isLocal) => {
    console.warn('新的页面')
    Potree.settings.isOfficial = true //标记为正式、非测试版本 
    //Potree.fileServer = axios 
    Potree.settings.libsUrl = './lib/'
    
    
    {//改为本地版
        for(let i in Potree.settings.urls) Potree.settings.urls[i] = ''
        Potree.settings.urls.prefix = ''   
    }
    
    const tagLimitDis = 8;

    Potree.settings.showCompass = true
    Potree.settings.compassDom = dom.querySelector('#direction')
    
    let {THREE} = Potree.mergeEditStart(dom)
    let MergeEditor = viewer.modules.MergeEditor
    let sceneBus = mitt()
    
    viewer.addEventListener('camera_changed', e => {
        var camera = e.viewport.camera
        var pos = camera.position
        if (e.viewport.name == 'MainView') {
            sceneBus.emit('cameraChange', { x: pos.x, y: pos.y, z: pos.z, rotate: camera.rotation })
        } 
    })
    viewer.addEventListener('webglError', e => {
        console.error('viewer webglError: ' + e)
        sceneBus.emit('webglError', { msg: e.msg })
    })
    
    
    {
        let index = 1; 
        //let setDisplay()
        
        if(!Potree.isIframeChild){
            
            /* viewer.addEventListener('createIframe',(e)=>{//创建了子页面 
            }) */
            window.winIndex = 0;
            
            window.iframeCreated = function(iframe){
                let child = iframe.contentWindow
                child.winIndex = index++
                //案件里视图提取页面子页面覆盖了父级页面，父级的模型可以隐藏以释放内存
                 
                console.error('createdIframe', child.winIndex, child.location.href)
                viewer.setDisplay(false ) 
                
                child.beforeDestroy = function(){ //注：在前端仍会找不到beforeDestroy,可能contentWindow变更？？所以手动调用setDisplay
                    console.warn('beforeDestroy', child.winIndex)
                    
                    child.viewer && child.viewer.setDisplay(false)
                    //如果是四维看看的场景，先不管了，页面被销毁应该就没了吧
                    
                    viewer.setDisplay(true )//恢复主页的模型显示
                    
                    
                    if(!child.viewer){
                        try{
                            let player = child.__sdk.core.get('Player')
                            /* let runtime = player.model._3dTilesRuntime 
                            let tileset = runtime.getTileset() 
                            tileset._cache.trim(); //使下一次update时dispose所有不可见的tiles
                            let sceneRenderer = child.__sdk.core.get('SceneRenderer')
                            player.model.visible = false
                            runtime.update(16, sceneRenderer.renderer, sceneRenderer.camera, true)  //没用，为何_trimTiles的while无法进入
                             */
                            player.model.traverse(e=>{
                                e.geometry && e.geometry.dispose()
                                if(e.material){
                                    e.material.map && e.material.map.dispose()
                                    if(e.material.uniforms && e.material.uniforms.map && e.material.uniforms.map.value){
                                        e.material.uniforms.map.value.dispose()
                                    }
                                }
                            }) //效果甚微
                            
                            /* let sceneRenderer = child.__sdk.core.get('SceneRenderer')
                            sceneRenderer.renderer.render(sceneRenderer.scene, sceneRenderer.camera)
                             */
                        }catch(e){
                            console.log(e)
                        }
                    }
                    
                }
               
                
                
            }
            
            //不知道删除iframe时是否那些模型还在内存里，需要释放吗？ 如果要需要加一个事件
        }else{
            
        }
    }
    
    window.THREE = THREE
    //isLocal = false 
    let autoLoads = []  
    let readyToAddModel 
    let maxLoadingCount = /* isLocal ? 1 :  */2; //正在加载模型的最大数目
    
    let mainBackground = viewer.background
    
    
     
    const units = { 1: 'metric', 2: 'imperial' }
    let getMeasureType = function (type, unit=1) {
        let info
        switch (type) {
            case 'free':
                info = { measureType: 'Distance' }
                break
            case 'area':
                info = { measureType: 'Area' }
                break 
            case 'vertical':
                info = { measureType: 'Ver Distance' }
                break  
            default:
                console.error('无此 measure type')
        }
        info.unit = units[unit]
        return info
    }
    let getMeasureFunction = function (measure, bus) {
          
        measure.addEventListener('highlight',(e)=>{
            //console.log('3d->2d highlight',e.state)
            bus.emit('highlight', e.state)
        })
        measure.addEventListener('marker_dropped',(e)=>{//拖拽结束后发送changeCallBack
            if (measure.parent) {
                //未被删除
                bus.emit('update',[
                    measure.dataset_points.map(p=>p.clone()) , 
                    measure.points_datasets
                ])
            }
        })
        return {
            /* quit: () => {
                Potree.Log('quit结束且删除: ' + measure.id, '#00c7b2')
                viewer.dispatchEvent({ type: 'cancel_insertions', remove: true, measure })
            }, //触发结束。退出测量模式，清除之前操作 */
            destroy: () => { 
                viewer.dispatchEvent({ type: 'cancel_insertions', remove: true, measure })
                viewer.scene.removeMeasurement(measure)
            },

            /* getPoints: () => {
                return measure.points
            },
            getDatasetLocations: () => {
                return measure.dataset_points
            },
            getDatasets: () => {
                return measure.points_datasets
            },
            getDatasetId: () => {
                return measure.datasetId
            }, */

            getArea: () => {
                return measure.area //{value:area, string:..}
            },
            getDistance: () => {
                if (measure.points.length < 2) return 0

                var value = measure.points[0].distanceTo(measure.points[1])

                return {
                    value, //米
                    string: measure.getConvertString(value, 'distance')
                }
            },
             
            //手动开启或关闭:
            show: () => {
                Potree.Utils.updateVisible(measure, 'inListByUser', true)
            },
            hide: () => {
                Potree.Utils.updateVisible(measure, 'inListByUser', false)
            },
            fly(){
                let result = viewer.focusOnObject(measure , 'measure', 1200  )
              
                return  result.msg ? result.msg : result.promise
                //返回值 1 deferred 表示即将位移 2 'posNoChange' 表示已在最佳位置 3 'tooFar' 表示距离最佳位置太远 
            },
            
             
            changeSelect(isHight){
                console.log('2d->3d isHight ',isHight)
                measure.setSelected(isHight, 'byList')
            },

        }
    }
     
    
    
    
    
    
    let sdk = {
        sceneBus,
        getPositionByScreen(pos2d, hopeModelId ){//通过屏幕坐标获取真实坐标 . hopeModelId： 如果指定了模型，优先返回hopeModelId上的intersect
            //console.log('getPositionByScreen',hopeModelId)
            hopeModelId = null
            let worldPos, localPos, modelId,  intersect
            let Handler = viewer.inputHandler
            
            let reGet = ()=>{//不使用当前鼠标所在位置的intersect，单独算
                pos2d.clientX = pos2d.x
                pos2d.clientY = pos2d.y
                pos2d.onlyGetIntersect = true
                pos2d.whichPointcloud = true
                if(hopeModelId != void 0){//隐藏其他的模型
                    let models = MergeEditor.getAllObjects()
                    models.forEach(model=>{
                        Potree.Utils.updateVisible(model, 'forPick', model.dataset_id == hopeModelId)
                    }) 
                }
                let intersect2 = Handler.onMouseMove(pos2d)
                if(hopeModelId != void 0){//恢复
                    let models = MergeEditor.getAllObjects()
                    models.forEach(model=>{
                        Potree.Utils.updateVisible(model, 'forPick', true)
                    }) 
                }
                if(intersect2 && intersect2.location){
                    intersect = intersect2
                }
            }
            if (pos2d && pos2d.inDrag) {  
                reGet() 
            } else {
                intersect = Handler.intersect
                if(intersect){
                    modelId = intersect.pointcloud ? intersect.pointcloud.dataset_id : intersect.object.dataset_id
                    if(hopeModelId != void 0 && modelId != hopeModelId){
                        reGet()
                    } 
                }
            }

            if (intersect && intersect.location) {
                modelId = intersect.pointcloud ? intersect.pointcloud.dataset_id : intersect.object.dataset_id
                /* if(hopeModelId != void 0 && modelId != hopeModelId){
                    return null
                } */ 
                worldPos = intersect.location.clone()
                localPos = Potree.Utils.datasetPosTransform({ toDataset: true, datasetId:modelId, position:worldPos })
            } else return null
            
            return { worldPos, modelId, localPos }
        },
        
        
        
         
        
        
        getScreenByPosition(pos3d, modelId, canShelter/* , disToCameraLimit */){//通过模型局部坐标获取屏幕坐标 
            
            //console.log('getScreenByPoint ')
            let isLocal = modelId != void 0 
            pos3d = new THREE.Vector3().copy(pos3d)
            let worldPos = isLocal ? Potree.Utils.datasetPosTransform({ fromDataset: true, datasetId: modelId, position:pos3d}) : pos3d
            if(!worldPos)return 
            
            
            if(canShelter){ 
                if(viewer.inputHandler.ifBlockedByIntersect(worldPos, 0.1, true)) return {trueSide:false}; 
            }
            
            
            var viewport = viewer.mainViewport
            var camera = viewport.camera
            var dom = viewer.renderArea
            if(tagLimitDis != void 0){
                if(camera.position.distanceToSquared(worldPos) > Math.pow(tagLimitDis,2))return false
            } 
            
            
            
            
            //console.log('getScreenByPoint ' + pos3d.toArray())
            return Potree.Utils.getPos2d(worldPos, viewport, dom  )
        },
        
        
         
        
        screenshot: (width, height, bgOpacity=1) => {
            //截图  
            var {getImagePromise, finishPromise} =  viewer.startScreenshot({ type: 'default', /* useRenderTarget:true,  */bgOpacity }, width, height) 
            var deferred = $.Deferred();
            finishPromise.done(({dataUrl}) => {
               deferred.resolve(dataUrl)
            })
            
            return deferred.promise()  
        },
        getPose() {//获取当前点位和朝向
            const camera = viewer.scene.getActiveCamera()
            const target = viewer.scene.view.getPivot().clone()
            const position = viewer.scene.view.position.clone() 
            //console.log('getPose',position, target)
            return { position, target }
        }, 
        comeTo(o = {}) {
            //console.log('comeTo',o.position, o.target)
            //飞到某个点  
            if(o.modelId){ 
                ['position','target'].forEach(e=>{
                    if(o[e]){
                        o[e] = Potree.Utils.datasetPosTransform({ fromDataset: true, datasetId: o.modelId, position:o[e]})
                    }
                }) 
            }
            
            if(o.distance){
                let position = o.target || o.position
                return viewer.focusOnObject({ position}, 'tag', null,{distance:o.distance} ).promise
            }
            let deferred = $.Deferred()
            
            viewer.scene.view.setView($.extend({},o, {
                duration: o.dur,
                callback:()=>{
                    o.callback && o.callback()
                    deferred.resolve(true)
                }
            }))
            return deferred.promise()
        },
         
     
        setBackdrop(sky){//天空盒背景
            console.log('天空盒背景',  sky)
            
            let setGroundAndText = (color)=>{
                MergeEditor.secondCompass.dom.find(".dirText").css({'color':color})
                viewer.compass.dom.find(".dirText").css({'color':color})
                MergeEditor.ground.material.uniforms.uColor.value.set(color) 
                //MergeEditor.ground.children[0].material.color.set(color)
            }
            
            if(sky == 'none'){
                viewer.setBackground(mainBackground) 
                setGroundAndText('#eee')
            }else if(sky[0] == '#'){
                viewer.setBackground(new THREE.Color(sky)) 
                let color = sky == '#fff' ? '#666' : sky == '#333' ? '#eee' : '#bbb'  //反相
                setGroundAndText(color)
            }else{
                viewer.setBackground('skybox', sky) 
                setGroundAndText('#e0e0e0')
            }
            
            viewer.dispatchEvent('content_changed')
        },
        
        
        enterSceneGuide(pathArr){//导览  (不需要修改参数)
            let editor = viewer.modules.CamAniEditor
            console.log('pathArr',pathArr)
           
            /* type SceneGuidec = {
              position: {x,y,z}
              target: {x,y,z}
              time: number
              speed: number //没用到
            } 
            */
            
            //console.log('enterSceneGuide',pathArr)
            
            let data = {
                duration: pathArr.slice(0,pathArr.length-1).reduce(function(total, currentValue ){return total+currentValue.time}, 0), //总时长(要去掉最后一个，因为已到终点，该点time无意义)
                points: pathArr,
                useDurSlice:true
            }
            let animation = editor.createAnimation(data)
            //注：最多只存在一条导览
             
             
            
            let bus = mitt()

            //播放完成
            animation.addEventListener('playDone', () => {
                bus.emit('playComplete')
            })
            //切换点
            animation.addEventListener('updateCurrentIndex', e => {
                bus.emit('changePoint', e.currentIndex + 1)
            })

            return {
                bus, 
                play() { 
                    MergeEditor.selectModel(null)
                    animation.play()
                },
                pause() {
                    animation.pause()
                },
                 
                clear() {
                    //删除
                    editor.removeAnimation(animation)
                },
            } 
            
        },
        
        //[path1, paht2], {  time, speed }   
        calcPathInfo(paths, info){ //传入的time， speed仅有一个。返回完整的 time, speed
             //这一版的control似乎无法在某个位置上改变角度，位置和角度一般都是一起变的，所以先不增加单位更换功能。
             let pos1 = new THREE.Vector3().copy(paths[0].position)
             let pos2 = new THREE.Vector3().copy(paths[1].position)
             let dis = pos1.distanceTo(pos2)
             if(info.time != void 0){
                  info.speed = dis / info.time
             }else{
                  info.time = dis / info.speed
             }
             return info
        },
        
        
        //scaleRange: { min, max }, opacityRange: { min, max }, bottomRange: { min, max } })
        
        addModel(props){ 
            /* requestLoadCount || (props.url = Potree.resourcePath+'/models/Block1.glb')
            requestLoadCount++ */ 
            //console.log(props.isDynamicAdded, props.mode)
 
            let bus = mitt()  
            //console.log('addModel',props)
            props.isFirstLoad = isLocal ? props.bottom == void 0 : (props.isDynamicAdded || props.mode == 'single')  // 在编辑时用户添加的 或 展示单个模型 （props.mode='single'模型展示页， props.mode='many'融合页）
            if(props.opacity == void 0)  props.opacity = 1 
            if(props.type == 'obj') props.type = 'glb'
            props.scale /= 100 
            if(props.rotation){
                if(props.rotation._x == void 0 && props.rotation.x != void 0){
                    props.rotation = new THREE.Euler().setFromVector3(props.rotation)
                }
            }



            if(!props.isFirstLoad){ 
                if(autoLoads.length == 0){ //首次加载
                    setTimeout(()=>{
                        let sizes = autoLoads.map(e=>e.size|| 0 )
                        console.log('需要请求加载的模型大小为', sizes, '总大小', sizes.reduce(function(total, currentValue ){
                            let current = parseFloat(currentValue)
                            return total + ((typeof currentValue == 'number' || currentValue.includes('M')) ? current : current / 1024)
                        }, 0))
                         
                        readyToAddModel = true  //准备开始加载
                        startLoad(autoLoads[0])
                    },30) 
                }
                autoLoads.push(props)
                readyToAddModel = false               
            }else{
                readyToAddModel = true
                props.rotation = result.getDefaultRotation()                
            }
             
            
            
            let startLoad = (prop)=>{
                //if(autoLoads.filter(e=>e.loaded).length>1)return console.log('取消加载', prop), prop.onError()
                
                //return prop.onError()
                if(prop.type == 'glb'){
                    prop.url = prop.url[0]   //2024.7 四维看看的4dtiles每个层级转化而来，只取最高精度的
                }
                prop.unlit = props.renderType != 'normal' 
                prop.maximumScreenSpaceError = 60
                Potree.addModel(prop,  prop.done , prop.progressFun, prop.onError)
                prop.loading = true
                console.log('-------开始加载 id:', prop.id, 'title:', prop.title, ', filename:', Potree.Common.getNameFromURL(prop.url),  prop ) 
            }
            
            let spliceFromArr = (model,loaded)=>{
                //let autoLoads.find()
                props.loadFinish = true
                props.loading = false
                  
                if(loaded){
                    props.loaded = true
                    props.model = model
                }else{
                    props.error = true 
                }
               
                let haventLoad = autoLoads.filter(e=>!e.loading && !e.loadFinish);
                if( haventLoad[0]){
                    startLoad(haventLoad[0])
                     
                    //this.addModel(autoLoads[0])
                }else if(autoLoads.filter(e=>!e.loadFinish).length == 0 && autoLoads.filter(e=>e.loaded).length>0 && !props.isFirstLoad){//设置相机位置：当自动开始加载第一个模型时(其余的也跟着自动加载),等这批加载完后;  
                    let autoLoadsDone = autoLoads.filter(e=>e.loaded).map(e=>e.model)
                    console.log('所有模型加载完毕')
                    autoLoads.filter(e=>e.loaded && e.show).forEach(e=>e.model.visible = true)
                    
                    MergeEditor.focusOn(autoLoadsDone, 1000, true, true)
                    autoLoads.length = 0
                    
                }  
            }
            
            let model
            let done = (model_)=>{
                model = model_
                if(!props.isFirstLoad){
                    model.visible = false//先不显示，防止卡顿
                }
                
                props.opacity < 100 && result.changeOpacity(props.opacity) 
                
                model.addEventListener('changeSelect',(e)=>{
                    bus.emit('changeSelect',e.selected)
                }) 
                let lastState={ } 
                model.addEventListener('transformChanged',(e)=>{
                    let msg = {}
                    if(!lastState.position || !model.position.equals(lastState.position)){
                        lastState.position = msg.position = model.position.clone() 
                    }
                    if(!lastState.rotation || !model.rotation.equals(lastState.rotation)){
                        lastState.rotation = msg.rotation = model.rotation.clone()
                    }
                    if(lastState.scale == void 0 || model.scale.x * 100 != lastState.scale){
                        lastState.scale = msg.scale = model.scale.x * 100
                    }
                     
                    msg = Potree.Common.CloneObject(msg)
                    //console.log(msg)
                    bus.emit('transformChanged', msg )
                }) 
                spliceFromArr(model,true)
                
                                
                if(props.mode == 'single'){//模型查看页
                    MergeEditor.noNeedSelection = true
                    setTimeout(()=>{
                        MergeEditor.focusOn([model], 1000, true, true)
                    },1) 
                }

                
                bus.emit('loadDone')
                
                //console.log('loadDone' )
            }
            let progressFun = (progress)=>{
                bus.emit('loadProgress',progress)
            }
            
            let onError = function ( xhr ) {
                bus.emit('loadError', xhr)
                console.log('loadError!!!!!!!!!',  Potree.Common.getNameFromURL(props.url), props.size, xhr) 
                spliceFromArr(model,false)
            }
            
             
            try{
                props.url = JSON.parse(props.url) //去掉 '\'
            }catch(e){}
             
            props.done = done; props.progressFun = progressFun; props.onError = onError
            
            
            if(readyToAddModel){
                   
                if(autoLoads.filter(e=>e.loading).length<maxLoadingCount ){
                    startLoad(props)
                }
                    
            }
            
            let scaleMeasure
            let result = {  
                bus,
                changeShow(show){ 
                    props.show = show  //for autoLoads show model
                    if(model){  
                        Potree.Utils.updateVisible(model, 'changeShow', show) 
                        viewer.dispatchEvent('content_changed')
                    } 
                },
                changeSelect(state){
                    if(model){
                        MergeEditor.selectModel(model, state, true, true)
                        if(state && viewer.inputHandler.selection[0]){
                            MergeEditor.transformControls.attach(model) //viewer.transformObject(model); //交换
                        }
                        //console.log('changeSelect',  props.id, state)
                    }
                },
                changeScale(s){
                    if(model){
                        s /= 100
                        
                        if(model.scale.x == s)return
                        //MergeEditor.history.beforeChange(model)//但不知道什么时候结束拖拽
                     
                        model.scale.set(s,s,s)
                        model.isPointcloud && model.changePointSize(Potree.config.material.realPointSize * s)  
                         
                        model.dispatchEvent("scale_changed")
                    }
                },
                changeOpacity(opacity){ //见笔记：透明物体的材质设置
                    if(opacity == void 0)opacity = 100
                    opacity/=100
                    MergeEditor.changeOpacity(model, opacity)
                },
                changeBottom(z){
                    /* model && MergeEditor.setModelBtmHeight(model,z)
                    model.dispatchEvent('transformChanged') //改了position */
                },
                changePosition(pos){//校准取消时执行
                    console.log('changePosition',pos.x, pos.y, pos.z)
                    model && model.position.copy(pos)
                    model.dispatchEvent({type:'position_changed'}) 
                }, 
                changeRotation(rot){//校准取消时执行 
                    console.log('changeRotation',rot.x, rot.y, rot.z)
                    model && model.rotation.setFromVector3(rot) 
                    model.dispatchEvent({type:'rotation_changed'})  
                },
                getDefaultRotation(){
                    //0看看，1看见，2深时，3用户上传三维模型，4深时mesh,5深光点云，6深光mesh
                    if(props.fromType == 1 || props.fromType == 4 || props.fromType == 6 ){//来自4dkk的3dtiles初始需要转90度
                        return new THREE.Euler(Math.PI/2, 0,0)
                    }else return new THREE.Euler(0,0,0)
                },
                enterRotateMode(){
                    if(model){
                        if(MergeEditor.split){//分屏校准
                            MergeEditor.setTransformState('rotate')
                            MergeEditor.transformControls2.attach(model)
                            MergeEditor.transformControls2.mode = 'rotate'
                        } 
                         
                        
                        MergeEditor.transformControls.attach(model)
                        MergeEditor.transformControls.mode = 'rotate'
                         
                    }
                }, 
                enterMoveMode(){
                    console.log('enterMoveMode')
                    if(model){ 
                        if(MergeEditor.split){//分屏校准
                            MergeEditor.setTransformState('translate')
                            MergeEditor.transformControls2.attach(model)
                            MergeEditor.transformControls2.mode = 'translate'
                        } 
                        MergeEditor.transformControls.attach(model)
                        MergeEditor.transformControls.mode = 'translate'
                         
                    }
                },
                leaveTransform(){ 
                    console.log('leaveTransform')
                    if(MergeEditor.split){//分屏校准
                        MergeEditor.setTransformState(null)
                    }else{ 
                        MergeEditor.transformControls.detach()
                        MergeEditor.transformControls2.detach()
                    }
                    MergeEditor.history.clear()
                },
                
                enterAlignment(){//开始校准
 
                    result.leaveTransform()
                    MergeEditor.enterSplit()
                    
                    
                    //console.log('enterAlignment',model.position, model.rotation)
                    let bus = new mitt()
                    
                    /* MergeEditor.transformControls.attach(model)
                    MergeEditor.transformControls.mode = 'translate' */
                    
                    return { 
                        bus  
                    } 
                },
                leaveAlignment(){
                    //console.log('leaveAlignment',model.position, model.rotation)
                    MergeEditor.leaveSplit()  
                    MergeEditor.transformControls.detach() 
                    MergeEditor.transformControls2.detach()
 
                },
                
                enterScaleSet(){//设置比例
                    let bus = new mitt()
                    let length , measureBuilded ;
                    viewer.outlinePass.selectedObjects = []
                    if(!Potree.Utils.isInsideFrustum(model.boundingBox.clone().applyMatrix4(model.matrixWorld), viewer.scene.getActiveCamera())){
                        MergeEditor.focusOn(model, 600 )
                    }
                
                    MergeEditor.getAllObjects().forEach(m=>{//隐藏其他的模型
                        if(m!=model) Potree.Utils.updateVisible(m, 'enterScaleSet', false) 
                    })
                    
                    let setScale = ()=>{
                        if(length == void 0 || !measureBuilded )return
                        
                        let vec = new THREE.Vector3().subVectors(viewer.mainViewport.camera.position, scaleMeasure.points[1])
                     
                         
                        let s = length / (scaleMeasure.points[0].distanceTo(scaleMeasure.points[1]))
                        result.changeScale(model.scale.x * s*100)
                        /* setTimeout(()=>{
                            viewer.focusOnObject(scaleMeasure , 'measure', 500)  
                        },1) */
                        
                        let newCamPos = new THREE.Vector3().addVectors(scaleMeasure.points[1],  vec.multiplyScalar(s)) 
                        viewer.scene.view.setView({position:newCamPos, target:scaleMeasure.getCenter(),  duration:0, callback:()=>{
                                 //更改target到measure中心的好处就是可以让相机绕measure中心转，坏处是每次更改都会变一下画面
                                
                            }
                        })
                        
                    }
                    
                    return { 
                        bus,
                        setLength(v){
                            if(!v)return
                            length = v
                            setScale()
                        },
                        startMeasure(){
                            if(scaleMeasure){
                                viewer.dispatchEvent({ type: 'cancel_insertions', remove: true, measure:scaleMeasure })
                                viewer.scene.removeMeasurement(scaleMeasure)
                            }
                            measureBuilded = false 
                            scaleMeasure = viewer.measuringTool.startInsertion(
                                {measureType: "Distance", unit: "metric"},
                                () => {
                                    //done:
                                    //bus.emit('end'  ) //完成
                                    measureBuilded = true
                                    setScale()
                                },
                                () => {
                                    //cancel
                                    //bus.emit('quit') //删除
                                }
                            ) 
                            scaleMeasure.addEventListener('marker_dropped',(e)=>{//拖拽结束后发送changeCallBack
                                if (scaleMeasure.parent) {
                                    //未被删除
                                    measureBuilded && setScale()
                                }
                            })
                            
                        }
                    } 
                },

                leaveScaleSet(){  
                    if(scaleMeasure){
                        viewer.dispatchEvent({ type: 'cancel_insertions', remove: true, measure:scaleMeasure })
                        viewer.scene.removeMeasurement(scaleMeasure)
                        scaleMeasure = null
                    }
                    
                    
                    viewer.outlinePass.selectedObjects = [model];
                    MergeEditor.getAllObjects().forEach(m=>{//恢复其他的模型
                        if(m!=model) Potree.Utils.updateVisible(m, 'enterScaleSet', true) 
                    })
                },

                
                
                destroy(){
                    model && MergeEditor.removeModel(model) 
                    viewer.dispatchEvent('content_changed')
                }
                 
            } 
            
            return result
        }, 
        
        
        //测量线的点都附着于各个模型，当模型变化时，点跟着变化。
        
        
        
        // 新的测量创建方法，传入type 返回新测量对象
        startMeasure(type){ 
        // 寻创建的测量对象有上面绘画测量对象的所有方法
            const bus = mitt()
            let info = getMeasureType(type)
            

            let measure = viewer.measuringTool.startInsertion(
                info,
                () => {
                    //done:
                    /* bus.emit('submit',  {
                        dataset_points: measure.dataset_points.map(p=>p.clone()) , 
                        points_datasets: measure.points_datasets
                    } ) //完成 */
                    
                    bus.emit('submit')
                    bus.emit('update',[
                        measure.dataset_points.map(p=>p.clone()) , 
                        measure.points_datasets
                    ])
                    
                    
                    
                    
                },
                () => {
                    //cancel
                    bus.emit('cancel'/* , ret */) //删除
                }
            )
            Potree.Log('startMeasure: ' + measure.id, '#00c7b2')
            
            /* let cancel = ()=>{ 
                Potree.Log('clear删除: ' + measure.id, '#00c7b2') 
                viewer.dispatchEvent({ type: 'cancel_insertions', remove: true, measure })
                viewer.scene.removeMeasurement(measure)
            } */
        
            let result = {
                bus,
                
                ...getMeasureFunction(measure, bus),               
            }
        
            /* StartMeasure = Measure & {
              // 多了cancel 取消测量的事件，没有参数
              // 多了invalidPoint 当用户测量了无效点时的事件，抛出无效原因
              bus: Emitter<{ cancel: void; invalidPoint: string }>
            } */
            return result
        },
        
        
         
        
        
        // 绘画测量线（非新增使用）
        // type = 'free' (自由) || 'vertical' (垂直) || 'area' (面积)
        // positions 点数组 构成如下 [{ point: {x,y,z}, modelId: 1 }]
        drawMeasure(type, dataset_points, points_datasets){ 
            // 返回测量对象有如下
            
            const bus = mitt()
            let info = getMeasureType(type /* , unit */)
            //info.points = positions 
            info.dataset_points = dataset_points
            info.points_datasets = points_datasets
            //info.sid = sid
            info.bus = bus
            let measure = viewer.measuringTool.createMeasureFromData(info)
            if(!measure)return {bus}
            Potree.Log('drawMeasure由数据新建: ' + measure.id, '#00c7b2')
             
            
            let result = {
                bus,
                setPositions(dataset_points, points_datasets){//用于恢复measure的点，不会修改点的个数
                    measure.dataset_points = dataset_points.map(e=>{
                        return e && new THREE.Vector3().copy(e) 
                    })
                    measure.points_datasets = points_datasets
                    measure.points = measure.dataset_points.map((p,i)=>{
                        return Potree.Utils.datasetPosTransform({fromDataset:true, datasetId:measure.points_datasets[i], position: p})
                    })
                    measure.getPoint2dInfo(measure.points)
                    measure.update({ifUpdateMarkers:true}) 
                    measure.setSelected(false)//隐藏edgelabel    
                },
                ...getMeasureFunction(measure, bus),
            }
            return result
        },
        
        
        
        
        
        
        
        
        addTag(info){//加热点
            let bus = mitt()  
            let tag
            
            
            let done = ()=>{
                bus.emit('added')
                bus.emit('update', {position: tag.position.clone(), normal:o.normal.clone(),  modelId:tag.root.dataset_id  } )
                tag = tag_
                tag.spot.addEventListener('mouseover',()=>{
                    bus.emit('hoverState',true)
                })
                tag.spot.addEventListener('mouseout',()=>{
                    bus.emit('hoverState',false)
                })
                
            }
            
            if(!info.position){
                viewer.tagTool.startInsertion().done(tag_=>{
                    done() 
                }) 
            }else{
                info.root = MergeEditor.getAllObjects().find(e=>e.dataset_id == info.modelId)
                if(!info.root){
                    console.error('没有找到该modelId')
                }
                
                tag = viewer.tagTool.createTagFromData(info)
                done()
            }
            
            
            
            
            let result = {
                bus,
                getScreenPos(){
                    let pos3d = new THREE.Vector3().setFromMatrixPosition( tag.matrixWorld ) 
                    return sdk.getScreenByPosition(pos3d) 
                },
                show(){
                    Potree.Utils.updateVisible(tag, 'byList', true)
                },
                hide(){
                    Potree.Utils.updateVisible(tag, 'byList', false)
                },
                destroy(){
                    if(tag){
                        tag.dispose()
                    } 
                        
                     
                    viewer.dispatchEvent({ type: 'cancel_insertions', remove: true    })
                },
                changeTitle(title){
                    tag.changeTitle(title)
                }
            }
            
            return result
            
        },
        
        
        showGrid(){
            Potree.Utils.updateVisible(viewer.modules.MergeEditor.ground, 'hideGrid', true)
            viewer.dispatchEvent('content_changed')
        },
        
        hideGrid(){
            Potree.Utils.updateVisible(viewer.modules.MergeEditor.ground, 'hideGrid', false)
            viewer.dispatchEvent('content_changed')
        }
    }
   
 
      
    
    //sdk.hideGrid()
    
    
    console.log('版本： 2022.12.20-1')
     
    return sdk 
}

export default enter