potree-sdk/src/modules/siteModel/SiteModel.js

import * as THREE from "../../../libs/three.js/build/three.module.js";
import SplitScreen from "../../utils/SplitScreen"
import {BuildingBox} from "./BuildingBox"
import Common from "../../utils/Common.js";
import {Images360} from '../Images360/Images360'
import {KeyCodes} from '../../KeyCodes' 
import {config } from "../../settings.js";
import math from "../../utils/math.js";
const minFloorHeight = 0.5
const ifDrawDatasetBound = true //显示一下数据集的tightBound线框
const minMarkers = 3


const Limit = {zMin:-config.map.cameraHeight,  zMax:config.map.cameraHeight,} //不能超过camera的高度，为了对称所以也限制了最低

var SiteModel = {
    bus: new THREE.EventDispatcher(), 
    entities:[],  //所有实体
    buildings:[], //所有建筑父集
    meshGroup: new THREE.Object3D,
    inEntity : null,
    lastPos: new THREE.Vector3(Infinity,Infinity,Infinity),
    
    
    init: function(){
        
        
        viewer.scene.scene.add(this.meshGroup) 
        this.meshGroup.name = 'siteModel' 
        this.SplitScreen = SplitScreen
        
        if(Potree.settings.editType == 'pano'){
            return
        }
        
        
        
        
        this.createHeightPull();
        
        if(Potree.settings.isTest && ifDrawDatasetBound){
            viewer.addEventListener('allLoaded',()=>{
            
                viewer.scene.pointclouds.forEach(pointcloud=>{
                    let boxPoints = pointcloud.getUnrotBoundPoint();
                      
                    let boundingBox = new BuildingBox({
                        name: '数据集tightBound_'+pointcloud.dataset_id,
                        points: boxPoints,
                        buildType : 'dataset',
                        zMax: pointcloud.bound.max.z,
                        zMin: pointcloud.bound.min.z,
                        ifDraw:true
                    }) 
                    
                    this.meshGroup.add(boundingBox) 
                    //boundingBox.markers.forEach(e=>e.visible = false)
                })   
            })
        }


        if(Potree.settings.isOfficial){
             
            viewer.addEventListener('camera_changed', e => {
                this.updateEntityAt()
            })
        }
        
        
        { 
            let pressDelete = (e)=>{ 
                if(e.keyCode == KeyCodes.BACKSPACE || e.keyCode == KeyCodes.DELETE){ 
                    if(this.selectedMarker){
                        let entity = this.selectedMarker.parent
                        let index = entity.markers.indexOf(this.selectedMarker) 
                        entity.removeMarker(index) 
                        
                        if(entity.points.length<2){//删到只剩一个点时重新画（如果是hole的点，直接删除hole吧？）
                            this.startInsertion('resume',entity)       
                        }
                    }
                }
            } 
            viewer.inputHandler.addEventListener('keydown', pressDelete) 
            
            
        }
        
        
    }, 
    
    
    
    updateEntityAt(force){
        //if(!this.entities.length || this.editing) return //编辑时也要根据位置显示不同楼层的漫游点与cad
        
        let fun = ()=>{ //延时update，防止卡顿
            let currPos = viewer.mainViewport.view.position
            
            if(force || !currPos.equals(this.lastPos)){
                //console.log('currPos ', currPos.toArray())
                this.lastPos.copy(currPos)
                let entity;
                
                let searchPos = Potree.settings.displayMode == 'showPanos' ? viewer.images360.currentPano : currPos
                entity = this.pointInWhichEntity(searchPos, 'room');
                
                if(force || this.inEntity != entity ){
                    let oldEntity = this.inEntity
                    this.inEntity = entity 
                    console.log('buildingChange', entity) 
                    this.bus.dispatchEvent({type:'buildingChange',entity}) 
                    //this.updatePanosVisible(oldEntity, this.inEntity) 
                      
                    let lastFloor = this.currentFloor   //oldEntity ? oldEntity.buildType == 'floor' ? oldEntity : oldEntity.buildType == 'room' ? oldEntity.buildParent : null : null; //基本只会是floor或room
                    let currentFloor = entity ? entity.buildType == 'floor' ? entity : entity.buildType == 'room' ? entity.buildParent : null : null; //基本只会是floor或room
                    if(currentFloor != lastFloor || force){
                        console.log('改变了floor',lastFloor,currentFloor)
                        this.currentFloor = currentFloor
                        this.bus.dispatchEvent({type:'FloorChange',currentFloor}) 
                    }
                    
                }
                force = false
                return true 
            }
        }
        
        if(force)fun()
        else Common.intervalTool.isWaiting('sitemodelCameraInterval', fun , 500)  
        

        
        
    },

 



    enter:function(){
        
        Potree.Log('sitemodel enter')
        this.clear()  //确保全部清空
        this.editing = true
        //this.updatePanosVisible(null, null, true)//show all
        viewer.updateFpVisiDatasets()
        
        
        let mapViewport = viewer.mapViewer.viewports[0]
        SplitScreen.splitScreen4Views({siteModel:true/* , viewports:[{name:'Top',viewport : mapViewport  }] */})
        
        
        viewer.viewports.forEach(e=>{
            if(e.name != 'mapViewport'){
                e.layersAdd('siteModelMapUnvisi') 
            }
            if(e.name == 'right' || e.name == 'back'){
                e.layersAdd('siteModeSideVisi') 
            }
        })   
        
        
        viewer.images360.panos.forEach(pano=>{
            viewer.setObjectLayers(pano.marker, 'siteModelMapUnvisi' ) 
        }) 
        mapViewport.layersAdd('siteModeOnlyMapVisi') //只有mapViewport能看到marker
       
          
        
    },
    
    
    
    leave:function(){
        
        Potree.Log('sitemodel leave')
        
        let mapViewport = viewer.mapViewer.viewports[0]
        SplitScreen.recoverFrom4Views()

        viewer.viewports.forEach(e=>{
            if(e.name != 'mapViewport'){
                e.layersRemove('siteModelMapUnvisi') 
            } 
            if(e.name == 'right' || e.name == 'back'){
                e.layersRemove('siteModeSideVisi') 
            }
        })

        viewer.images360.panos.forEach(pano=>{
            viewer.setObjectLayers(pano.marker, 'sceneObjects' ) 
        })
        
        mapViewport.layersRemove('siteModeOnlyMapVisi') 
        this.clear()   
        this.editing = false
        
        viewer.updateFpVisiDatasets()
    } ,
    
    
     
    
     
    addFloor:function(parent, dirType, sid, name){//dirType:'top'|'bottom'在上方建还是下方。如果建筑中没有楼层，默认在基底建一个
        let buildType = 'floor' 
        let zMin, zMax
        if(parent.buildChildren.length == 0){
            zMin = parent.zMin
            zMax = zMin + Potree.config.siteModel.floorHeightDefault
        }else{
            if(dirType == 'bottom'){
                //var btm = Common.find(parent.buildChildren,null,[e=>e.zMin]) 
                var btm = parent.buildChildren[0]
                zMax = btm.zMin
                zMin = zMax - Potree.config.siteModel.floorHeightDefault 
            }else{
                //var top = Common.find(parent.buildChildren,null,[e=>e.zMax]) 
                var top = parent.buildChildren[parent.buildChildren.length - 1]
                zMin = top.zMax 
                zMax = zMin + Potree.config.siteModel.floorHeightDefault
            }
            
        }
       
        
        let prop = {
            buildType,
            //name : Potree.config.siteModel.names[buildType],
            zMin,
            zMax, 
            buildParent:parent,
            sid, name,
            ifDraw:true
        }
        var floor = new BuildingBox(prop);
        /* parent.buildChildren.push(floor)
        this.meshGroup.add(floor);
        this.entities.push(floor) */
        floor.update()
        this.addEntity(floor,parent)
        //this.selectEntity(floor)
        if(this.selected == parent){//重新选择下，为了显示新楼层线框
            parent.unselect()  
            parent.select()    
        }
 
        return floor
    },
     
    
    
    startInsertion:function(buildType, parent, sid, name, callback, cancelFun){
        
        let zMin, zMax, entity, resume 
        let mapViewport = viewer.mapViewer.viewports[0]
         
        if(buildType == 'resume'){//继续画（使用最后一个点或者新加的点）
            resume = true
            entity = parent
            buildType = parent.buildType
             
            //删除原先所有的点，因为它们已经添加了事件，会很麻烦：
            entity.reDraw(0)
            entity.isNew = true //当作新的来画
        }
        
        if(!resume){
            if(buildType == 'hole' || buildType == 'room'){
                zMin = parent.zMin
                zMax = parent.zMax 
            }else if(buildType == 'building'){ 
                parent = null
                zMin = viewer.bound.boundingBox.min.z
                zMax = viewer.bound.boundingBox.min.z
            } 
        
        
       
           
            if(buildType == 'hole'){ 
                entity = parent.addHole()
                entity.isNew = true
                this.selectEntity(parent)
                entity.select()
                console.log('挖洞 ',entity.uuid)
            }else{ 
            
                let prop = { 
                    buildType,
                    //name : Potree.config.siteModel.names[buildType],//'building',
                    zMin, 
                    zMax,
                    buildParent:parent,
                    sid, name,
                    ifDraw:true
                }
                   
                entity = new BuildingBox(prop); 
                entity.isNew = true   
                this.selectEntity(entity)
            }
        
        
            
            this.addEntity(entity, parent)
              
        
        
        
        }
        
        
         
        
        let timer;
        
         
        let endDragFun = (e) => {  
            if (e.button == THREE.MOUSE.LEFT ) { 
                var marker = entity.addMarker({point:entity.points[entity.points.length - 1].clone()})
                   
                //entity.editStateChange(true) //重新激活reticule状态
                entity.continueDrag(marker, e)  
            } else if (e.button === THREE.MOUSE.RIGHT ) {
                if(e.pressDistance < Potree.config.clickMaxDragDis )end(e);//非拖拽的话
                else entity.continueDrag(null, e/* .drag.object */)
                 
            }
        };


        let finish = ()=>{//结束绘画 
            viewer.removeEventListener('cancel_insertions', Exit);
            entity.removeEventListener('unselect', Exit);
            clearTimeout(timer) 
            entity.editStateChange(false)  
            //pressExit && viewer.inputHandler.removeEventListener('keydown', pressExit);
            callback && callback(entity) 
        }


        let end = (e={}) => {//尝试结束
             /* 退出的三种形式：
                1 普通：如果大于三个marker，结束且保留；否则重新画。()
                2 删除：直接结束且删除。(remove)
                3 结束：如果大于三个marker，结束且保留；否则结束且删除。 (finish)
                4 保留：无论几个marker，都保留着，结束。（remain）
             */
            
            if(e.remove){ 
                finish()
                return this.removeEntity(entity)
            }
             
             
             
            if(!e.remain && !e.finish && !e.remove && entity.markers.length<=minMarkers){//右键  当个数不够时取消 
                //重新开始画
                entity.reDraw(1)
                 
                viewer.updateVisible(entity.markers[0],'unMove',false);
                var f = ()=>{
                    viewer.updateVisible(entity.markers[0],'unMove',true); 
                    entity.removeEventListener('dragChange',f)
                }
                entity.addEventListener('dragChange',f) 
                
                //console.log('waitcontinue')
                entity.continueDrag(entity.markers[0], e)
                return  
            } 
            
            finish()
              
            if (e.remain || !e.remove && entity.markers.length >  3) {//保留 
                entity.removeMarker(entity.points.length - 1); 
                entity.markers.forEach(marker=>{marker.dispatchEvent('addHoverEvent') })
                if(buildType == 'room'){
                    this.fitPullBox()
                } 
                entity.isNew = false 
                entity.addMidMarkers() 
                
            }else{
                this.removeEntity(entity) //直接删除没画好的，比较简单。这样就不用担心旧的continueDrag仍旧触发了
        
            } 
            
            return entity
        };

        
        let Exit = (e)=>{ //强制结束
         
            entity.removeEventListener('unselect', Exit);
            
            if(viewer.inputHandler.drag){//还未触发drop的话
                viewer.inputHandler.drag.object.dispatchEvent({
                    type: 'drop',
                    drag: viewer.inputHandler.drag, 
                    viewer: viewer,
                    pressDistance:0,
                    button : THREE.MOUSE.RIGHT  
                });
                viewer.inputHandler.drag = null 
            }else{
                end({remain:true})   
            }
            viewer.inputHandler.drag = null 
        }
         
        
        viewer.dispatchEvent( 'cancel_insertions'  );//取消之前的 
        viewer.addEventListener('cancel_insertions', Exit);
        entity.addEventListener('unselect', Exit);   
        
        
        
        var marker = entity.addMarker({point:new THREE.Vector3(0, 0, 0)})
        viewer.updateVisible(marker,'unMove',false);//这时候的位置是假的（0,0,0）所以先不可见
        var f = ()=>{
            viewer.updateVisible(marker,'unMove',true); 
            entity.removeEventListener('dragChange',f)
        }
        entity.addEventListener('dragChange',f)  
            
             
        marker.isDragging = true 
        viewer.inputHandler.startDragging(marker , {dragViewport:mapViewport, endDragFun, notPressMouse:true} ); //notPressMouse代表不是通过按下鼠标来拖拽.  dragViewport指定了只能在地图上拖拽
        
          
        return entity;
    
        
        
        
    },
    
    
    
    getPreDealData(points,  zMin, zMax, initial, buildType, parent){
        /* if( buildType == 'building' ){
            zMax = zMin //强制变得一样，作为基底。如果有必要，保存时再算真实的zMax。目前zMin没有保存所以数据是错的，会直接根据floor计算
        } */ 
        
        var bound = viewer.bound.boundingBox
        
        if(buildType == 'building' && initial){//初始数据错的，要自己建（只有一个building和floor）    原posIsLonlat
            console.log('空间模型未编辑过, 初始化了一个')
            
            points = [
                new THREE.Vector3(bound.min.x, bound.min.y,0),
                new THREE.Vector3(bound.max.x, bound.min.y,0),
                new THREE.Vector3(bound.max.x, bound.max.y,0),
                new THREE.Vector3(bound.min.x, bound.max.y,0),
            ]
            zMin = bound.min.z
            zMax = bound.max.z
            /* points = points.map(e=>{
                return  viewer.transform.lonlatToLocal.forward(e) 
            })  */
            
        }else{//相对于初始数据集的模型内坐标
            points = points.map(e=> this.transform(e, 'fromDataset'))
            if(buildType == 'floor' && initial){
                zMin = bound.min.z
                zMax = bound.max.z
            }                
        } 
        return {points, zMax, zMin }
    },
    
    
   
    resetFromData:function(entity,  points=[], holes=[], zMin, zMax ){
         
         
        var {points, zMax, zMin}  = this.getPreDealData(points,  zMin, zMax , this.autoBuild , entity.buildType, entity.buildParent )
        
        if(entity.buildType != 'floor' )entity.points = points
        
        
        if(entity.buildType == 'room'){
            entity.zMin = zMin
            entity.zMax = zMax
        }else if(entity.buildType == 'floor'){//改楼高
            let height = zMax - zMin
            let zMax2 = entity.zMin + height 
            SiteModel.changeZ(entity, 'zMax', zMax2)
        }
        
        { 
            //删除旧的holes重新添加
            let holesOld = entity.holes 
            holesOld.forEach(e=>{
                entity.removeHole(e)
            })
            
            holes.forEach(points =>{
                let ps = points.map(e=> this.transform(e, 'fromDataset'))
                let hole = entity.addHole(ps)
                hole.addMidMarkers()
            })
        }
        
        
        
        entity.update()
        return entity
    }
   
   
    ,
   
    createFromData:function( buildType, parent ,sid, name, points=[], holes=[], zMin, zMax, initial,panos,flagPano){ 
        if(buildType != 'building' && buildType != 'floor' && buildType != 'room' ) return
          
        
        var {points, zMax, zMin} = this.getPreDealData(points,  zMin, zMax , initial, buildType, parent )
        
        
        
        {
            
            let getPano = (id)=>{
                return viewer.images360.panos.find(pano=>pano.id == id)
            }
            
            panos = panos ? panos.map(e=>getPano(e)) : [];
            flagPano = flagPano != void 0 ? getPano(flagPano) : null ; //最中心的pano 或者 最靠近该实体的pano(当panos为空时)
                
            if(!this.editing && buildType == 'floor' && !flagPano){//没有的话可能是自动添加的floor，直接用parent的吧
                panos = parent.panos;
                flagPano = parent.flagPano;
            }
        }
        
        
        
        
        
        let prop = {
            buildType,
            points,
            name,
            sid,
            zMin,
            zMax,
            buildParent:parent, 
            ifDraw:this.editing  || Potree.settings.drawEntityData,
            panos, flagPano,
            autoBuild : initial
        }
        
        let entity = new BuildingBox(prop)
        SiteModel.addEntity(entity, parent )
        if(this.editing){
            if(buildType == 'building'|| buildType == 'room'){
                entity.addMidMarkers()
            }
        }
        
        
        holes.forEach(points =>{
            let ps = points.map(e=> this.transform(e, 'fromDataset'))
            let hole = entity.addHole(ps)
            this.editing && hole.addMidMarkers()
        })
         
        
        /* if(buildType == 'floor'){
            this.updateBuildingZ(parent)
        }  */
         
         
        return entity
    },
    
    transform:function(pos, type){
        if(Potree.settings.editType == 'pano'){ // 模型不经转换
            return new THREE.Vector3().copy(pos).setZ(0);
        }
        
        if(type == 'toDataset'){
            let point = Potree.Utils.datasetPosTransform({ toDataset: true, position: pos.clone(), datasetId: Potree.settings.originDatasetId })
            return new THREE.Vector2().copy(point)
            
        }else{
            let position = new THREE.Vector3().copy(pos).setZ(0)
            return Potree.Utils.datasetPosTransform({ fromDataset: true, position, datasetId: Potree.settings.originDatasetId })
            
        }
    },
    
    
    
    
    
    addEntity:function(entity, parent){ 
        this.meshGroup.add(entity);
        this.entities.push(entity)
        if(entity.buildType == 'building'){
            this.buildings.push(entity)
        }else{ 
            parent.buildChildren.push(entity)
            
        }   
         
    
        if(entity.buildType == 'room'){
            entity.addEventListener('marker_dropped',()=>{
                this.fitPullBox()
            })   
        }else if(entity.buildType == 'floor'){
            this.updateBuildingZ(parent)
            parent.dispatchEvent({type:'addFloor'})
        }
        
        {//仅能存在一个marker被选中。选中的点可以被删除
            entity.addEventListener('clickMarker', (e)=>{
                if(this.selectedMarker == e.marker){
                    this.selectedMarker.dispatchEvent({type:'clickSelect',state:false})
                    this.selectedMarker = null 
                }else{
                    if(this.selectedMarker){
                        this.selectedMarker.dispatchEvent({type:'clickSelect',state:false})
                    }
                    this.selectedMarker = e.marker
                    this.selectedMarker.dispatchEvent({type:'clickSelect',state:true})
                } 
            })
            entity.addEventListener('removeMarker', (e)=>{ 
                if(this.selectedMarker == e.marker){
                    this.selectedMarker = null
                }
            })
            
            let unselect = (e)=>{//取消选中实体或删除后
                if(this.selectedMarker && entity.markers.includes(this.selectedMarker)){
                    this.selectedMarker.dispatchEvent({type:'clickSelect',state:false})
                    this.selectedMarker = null
                } 
            } 
            entity.addEventListener('dispose', unselect)
            entity.addEventListener('unselect', unselect)
                
            
        }
        //console.log('添加实体:', entity.buildType, entity.sid, entity.uuid)
    
    },
    
    removeEntity : function(entity){
        if(!this.entities.includes(entity))return
        
        console.log('删除实体:', entity.buildType, entity.sid)
        
        if(this.selected == entity){
            this.height_pull_box.visible = false 
            this.selectEntity(null)
        }
       
        
        if(entity.buildType == 'building'){
            var index = this.buildings.indexOf(entity);
            if(index>-1){
                this.buildings.splice(index,1) 
            }
        }else{
            var index = entity.buildParent.buildChildren.indexOf(entity);
            if(index>-1){
                entity.buildParent.buildChildren.splice(index,1) 
            }
        }
        
        
        
        var index = this.entities.indexOf(entity);
        if(index>-1){
            this.entities.splice(index,1) 
        }
        
        
        entity.dispose()
        let buildChildren = entity.buildChildren.slice()
        buildChildren.forEach(e=>this.removeEntity(e))
        
         
    },
    
    
    updateBuildingZ:function(building){
         
        building.buildChildren = building.buildChildren.sort((e,a)=>e.zMin-a.zMin)//从低到高排序
        building.zMin = building.zMax = building.buildChildren[0].zMin  //基底高度 
        //building.zMax = building.buildChildren[building.buildChildren.length-1].zMax
        if(this.editing) building.update({dontUpdateChildren:true})
        building.dispatchEvent('updateBuildingZ')    
    },
   
    
    
    selectEntity : function(entity, state=true){
        if(state === false){
            entity.unselect()
            if(this.selected == entity)this.selected = null
            
            return 
        }
        
        if(this.selected == entity || entity && entity.buildType == 'hole')return
        //this.buildings.forEach(e=>e.unselect())
        this.selected && this.selected.unselect()
        this.height_pull_box.visible = false
        
        
        if(entity){
            entity.select()
            
        }
           
        
        this.selected = entity
        
        
        if(entity && (entity.buildType == 'floor' || entity.buildType == 'room' )){
            this.height_pull_box.visible = true 
            this.fitPullBox()
        } 
        
        if(entity && !entity.isNew && (entity.buildType == 'building' || entity.buildType == 'room' ) && entity.points.length<2){
            this.startInsertion('resume',entity)   //继续画     
        }
    },
    
    
     
    
    
    
    
    fitPullBox: function(){ //自适应拖拽楼层的pullMesh
        if(!this.selected || this.selected.buildType!= 'floor' && this.selected.buildType!= 'room')return
        let bound = new THREE.Box3();
        bound.expandByObject(this.selected.box)
        let center = bound.getCenter(new THREE.Vector3() )  
        let size = bound.getSize(new THREE.Vector3() )
        this.height_pull_box.scale.copy(size)
        this.height_pull_box.position.copy(center) 
    },
    
    
    
    
    
    changeZ:function(entity, dirType, value){ // floor or room 修改zMin or zMax
        let max, min //limit
        
        if(entity.buildType == 'floor'){//楼层 
            let index = entity.buildParent.buildChildren.indexOf(entity)
            if(dirType == 'zMax'){
                let upper = entity.buildParent.buildChildren[index+1];
                entity.zMax = Math.min(Limit.zMax, value)
                min = entity.zMin + minFloorHeight
                if(entity.zMax < min){
                    entity.zMax = min
                }else{ 
                    if(upper){
                        max = upper.zMax - minFloorHeight;
                        if(entity.zMax > max){
                            entity.zMax = max
                        }
                    }  
                }
                if(upper){
                    upper.zMin = entity.zMax 
                    upper.update()
                    upper.dispatchEvent({type:'changeHeight'})
                } 
            }else{
                let lower = entity.buildParent.buildChildren[index-1];
              
                entity.zMin = Math.max(Limit.zMin, value)   
                max = entity.zMax - minFloorHeight
                if(entity.zMin > max){
                    entity.zMin = max
                }else{ 
                    if(lower){
                        min = lower.zMin + minFloorHeight;
                        if(entity.zMin < min){
                            entity.zMin = min
                        }
                    } 
                }
                if(lower){
                    lower.zMax = entity.zMin
                    lower.update()
                    lower.dispatchEvent({type:'changeHeight'}) 
                } 
                if(index == 0)this.updateBuildingZ(entity.buildParent) 
            }
        }else if(entity.buildType == 'room'){//房间
            //按照navvis的是不一定限制在当前楼层，只要高度不超过当前楼层即可。
            let maxHeight = entity.buildParent.zMax - entity.buildParent.zMin
            
           
            if(dirType == 'zMax'){ 
                min = entity.zMin + minFloorHeight
                max = entity.zMin + maxHeight
                entity.zMax = THREE.Math.clamp(value, min, max); 
            }else{ 
                min = entity.zMax - maxHeight
                max = entity.zMax - minFloorHeight
                entity.zMin = THREE.Math.clamp(value, min, max); 
            }
        }
        entity.update()
        entity.dispatchEvent({type:'changeHeight'})
        //this.selected.emit('update')
        this.fitPullBox()
    },
    
    
    
    createHeightPull:function(){ //拖拽楼层的bounding box
        let boxGeo = new THREE.BoxBufferGeometry( 1, 1, 1/4 )
        let boxMat = new THREE.MeshBasicMaterial({
            color:"#F00", 
            opacity:0,
            transparent:true,
            depthTest:false,
            side:2
        }) 
        
        let height_pull_box_up = new THREE.Mesh(boxGeo,boxMat)
        let height_pull_box_down = new THREE.Mesh(boxGeo,boxMat)
        height_pull_box_up.name = 'height_pull_box_up';
        height_pull_box_down.name = 'height_pull_box_down';
        this.height_pull_box = new THREE.Object3D();
        this.height_pull_box.name = 'height_pull_box'       
        this.height_pull_box.add(height_pull_box_up)
        this.height_pull_box.add(height_pull_box_down) 
        this.height_pull_box.visible = false
        this.meshGroup.add(this.height_pull_box) 
        height_pull_box_up.position.set(0,0,1/2/* 3/8 */)
        height_pull_box_down.position.set(0,0,-1/2/* -3/8 */)
        viewer.setObjectLayers(this.height_pull_box, 'siteModeSideVisi' )
        
        
        
        let mouseover = (e)=>{
            viewer.dispatchEvent({
                type : "CursorChange", action : "add",  name:"siteModelFloorDrag"
            }) 
        }
        let mouseleave = (e)=>{
            viewer.dispatchEvent({
                type : "CursorChange", action : "remove",  name:"siteModelFloorDrag"
            }) 
        }
        
        
        let firstZ, firstIntersect;
        let drag = (e)=>{
            var intersectPoint = e.intersectPoint.orthoIntersect //不要点云的intersect，只要orthocamera算出的平面intersect
             
            if(firstIntersect != void 0){
                
                let moveZ = intersectPoint.z - firstIntersect                 
                if(this.selected.buildType == 'floor'){//楼层   
                    //限制高度不能超过上下
                    if(e.target == height_pull_box_up){  
                        if(firstZ == void 0)firstZ = this.selected.zMax 
                        this.changeZ(this.selected, 'zMax', firstZ + moveZ) 
                    }else{ 
                        if(firstZ == void 0)firstZ = this.selected.zMin 
                        this.changeZ(this.selected, 'zMin', firstZ + moveZ) 
                    } 
                }else if(this.selected.buildType == 'room'){//房屋 
                    if(e.target == height_pull_box_up){
                        if(firstZ == void 0)firstZ = this.selected.zMax
                        this.changeZ(this.selected, 'zMax', firstZ + moveZ) 
                    }else{
                        if(firstZ == void 0)firstZ = this.selected.zMin
                        this.changeZ(this.selected, 'zMin', firstZ + moveZ) 
                    }
                }  
            }else{
                firstIntersect = intersectPoint.z  
            }               
        }
        
        
        let drop = (e)=>{
            firstZ = firstIntersect = null
        }
         
        height_pull_box_up.addEventListener('mousemove',mouseover)
        height_pull_box_down.addEventListener('mousemove',mouseover)
        height_pull_box_up.addEventListener('mouseleave',mouseleave)
        height_pull_box_down.addEventListener('mouseleave',mouseleave)
        height_pull_box_up.addEventListener('drag',drag)
        height_pull_box_down.addEventListener('drag',drag)
        height_pull_box_up.addEventListener('drop',drop)
        height_pull_box_down.addEventListener('drop',drop)
    },
    
    
    pointInWhichEntity(location, buildType, ifIgnoreHole){//buildType是要找的建筑类型
        //location 可以是pano或者坐标
        //由于房间可能在building外，所以房间要另外单独识别。
        
        let lastResult; //最接近的上一层结果，如果没有result返回这个
        let result
        let level = {
            building: 0, floor: 1, room: 2 
        }
        
        let traverse = (parent, buildType)=>{//返回第一个符合标准的实体
            let contains;
            if(location instanceof THREE.Vector3){
                contains = parent.ifContainsPoint(location)
            }else{//is pano
                contains = parent.panos.includes(location)
            }
            if(contains){
                if(!lastResult || level[lastResult.buildType] < level[parent.buildType]  )lastResult = parent
                
                
                if(parent.buildType == buildType){
                    return parent
                }else{  
                    for(let i=0,len=parent.buildChildren.length; i<len; i++){
                        let result1 = traverse(parent.buildChildren[i])
                        if(result1) return result1
                    }  
                }
            }
            
        }
        //因为建筑可能重叠，所以需要先找到最接近其中心的建筑物
        result = Common.sortByScore(this.buildings, [(building)=>{
            return traverse(building, 'building') //在building中
            
        }], [(building)=>{   //写法类似pointInWhichPointcloud
            let boundingBox = building.getBound()
            let center = boundingBox.getCenter(new THREE.Vector3())
            let position = location instanceof THREE.Vector3 ? location : location.position
            let dis = position.distanceTo(center)
            let size = boundingBox.getSize(new THREE.Vector3())
            let length = size.length() / 2;
            return length / dis 
        }]);    
        
        let building = result && result[0] && result[0].score > 1 && result[0].item 
        if(buildType == 'building' || !building)return building
        result = traverse(building, buildType) 
          
         
        /* if(!result && buildType == 'room'){//如果要找的是room, 且按刚才的顺序找不到的话，就单独从所有rooms中找一遍。因为room可能不在floor和building内。
            let rooms = this.entities.filter(e=>e.buildType == 'room');
            result = rooms.find(e=>e.ifContainsPoint(position))
        }*/
        //虽然房间可以画到上级之外，但是为了方便起见，假定房间绝对在楼层之内。找不到的话要调整空间模型了。
        
        
        return result || lastResult
        
    }
    ,
    
    
    findPanos: function(){
        
        {
            this.entities.forEach(entity=>{
                //清空:
                entity.panos = []   
                entity.flagPano = null

                viewer.images360.panos.forEach(pano=>{
                    if(entity.ifContainsPoint(pano.position)){
                        entity.panos.push(pano)
                    } 
                }) 
            }) 
        } 
        
        
        /* viewer.images360.panos.forEach(pano=>{  //一个漫游点只对应一个实体的话
            let result = this.pointInWhichEntity(pano.position, 'room');
            
            {//get panos for every entities
                let entity = result
                while(entity){
                    entity.panos.push(pano);
                    entity = entity.buildParent
                } 
            } 
        }) */
        




        {//search center pano
             this.entities.forEach(entity=>{
                let panos = entity.panos
                if(panos.length == 0)return   
                let bound = entity.getBound();
                let center = bound.getCenter(new THREE.Vector3)
                let request = []
                let rank = [
                    Images360.scoreFunctions.distanceSquared({position: center}) 
                ]
                //let panos = entity.panos && entity.panos.length ? entity.panos : viewer.images360.panos //entity没有panos的话，就扩大到所有panos
                
                let r = Common.sortByScore(panos, request, rank);

                if(r && r.length){
                    entity.flagPano = r[0].item 
                }else{
                    console.error('no flagPano??')
                }
                
                
            })
         
        }
        
    }
    ,
    
    
    
    findEntityForDataset:function(){//为每一个数据集寻找它所属的最小实体
        /* var entities = this.entities.filter(e=>e.buildType == 'room' || e.buildType == 'floor' && e.buildChildren.length == 0)
        viewer.scene.pointclouds.forEach(pointcloud=>{
             
            let cloudVolume = pointcloud.getVolume()
            let scores = []
            entities.forEach(entity=>{
                let volume = entity.intersectPointcloudVolume(pointcloud) 
                //注：默认已经findPanos过
                let panos = entity.panos.filter(e=>pointcloud.panos.includes(e));
                let panoCount = panos.length
                
                let score = volume / cloudVolume + panoCount / pointcloud.panos.length
                 
                scores.push({entity, volume, panoCount, score})
 
            }) 
            scores.sort((a,b)=>{ return b.score-a.score }) 
            
            if(scores.length == 0 || scores[0].volume/cloudVolume < 0.0001 && scores[0].volume < 3 ){//如果约等于0 
                pointcloud.belongToEntity = null
            }else{
                pointcloud.belongToEntity = scores[0].entity; 
            } 
        }) */
        
        let getScores = (pointcloud, entities, cloudVolume)=>{ 
            let scores = []
            entities.forEach(entity=>{
                let volume = entity.intersectPointcloudVolume(pointcloud) 
                //注：默认已经findPanos过
                let panos = entity.panos.filter(e=>pointcloud.panos.includes(e));
                let panoCount = panos.length
                
                let score = volume / cloudVolume + panoCount / pointcloud.panos.length
                 
                scores.push({entity, volume, panoCount, score}) 
                
            })
            scores.sort((a,b)=>{ return b.score-a.score }) 
            
            return scores
        }
        
        
        viewer.scene.pointclouds.forEach(pointcloud=>{ //先判断父级，如果父集不通过就不判断子级。
            let cloudVolume = pointcloud.getVolume()
            let entities = this.buildings
            
            while(1){
                let scores = getScores(pointcloud, entities, cloudVolume)
                if(scores.length == 0 || scores[0].volume/cloudVolume < 0.0001 && scores[0].volume < 3 ){//如果约等于0 
                    pointcloud.belongToEntity = null
                    break;
                }else{
                    entities = scores[0].entity.buildChildren
                    if(entities.length == 0){
                        pointcloud.belongToEntity = scores[0].entity; 
                        break;
                    }
                } 
            }  
        })
        
        
        
        
        
        /*
        旧版：
        只需要考虑 floor 和 room, 因为building的只有一个基底没高度
        floor 和 room 在空间中没有完全的从属关系，因为room可以超出floor之外。所以直接混在一起来查找，但要排除有房间的楼层。 
        （现在改为层层递进查找，否则数据集包含entity多的，会直接挂载到体积最大的房间里，即使看起来主体点云并不在该房间）
        
        
        有的数据集虽然很高，但只有近地面的部分才是主体，这部分一般含有全部漫游点。为了防止上层的实体因体积较大而分数高，就把包含漫游点的个数也加入考虑。
        
        重叠体积大、且包含漫游点最多的最小实体将会拥有该点云。
        
        期望： 最好不挂载到最小子级，因为现在有房间都到房间里了。
        */
    }
    
    
    
    ,
    clear:function(){//清空
     
        /* entities:[],  //所有实体
        buildings:[], //所有建筑父集
        meshGroup: new THREE.Object3D, */
        this.selectEntity(null)
        
        let length = this.entities.length;
        for(let i=0;i<length;i++){
            this.entities[i].dispose()
        }
        
        this.entities = []
        this.buildings = []
        this.inEntity = null
            
         
    }
    ,
    
    
    
    gotoEntity(id, isNearBy, duration=1000) { 
        var entity = this.entities.find(e => e.sid == id)
        let aimPano
        if (!entity) {
            return console.error('没找到entity ')
        }
        
        if(Potree.settings.displayMode == 'showPanos'){
            if (isNearBy && entity.panos.length) {
                if(entity.panos.includes(viewer.images360.currentPano)) return 'posNoChange' //已在当前实体中

                let position = viewer.scene.getActiveCamera().position
                let request = []
                let rank = [Images360.scoreFunctions.distanceSquared({ position })]
                let r = Common.sortByScore(entity.panos, request, rank)

                aimPano = r[0].item
            } else {
                if (!entity.flagPano) {
                    return console.log('没有flagPano')
                }
                aimPano = entity.flagPano
            }
            if(aimPano == viewer.images360.currentPano) return 'posNoChange'
            viewer.images360.flyToPano(aimPano)
        }else{  
            if(isNearBy && entity.ifContainsPoint(viewer.images360.position)  ){
                return 'posNoChange' //已在当前实体中
            }

            let boundingBox = entity.getBound()
            let position = boundingBox.getCenter(new THREE.Vector3())   //中心点不一定在entity中，比如半环形建筑（所以要不要改成到漫游点呢）
            
            if(viewer.modules.Clip && viewer.modules.Clip.editing){
                viewer.modules.Clip.bus.dispatchEvent({type:'flyToPos', position})
            }else{
                if(math.closeTo(position, viewer.images360.position)) return 'posNoChange'  
                let size = boundingBox.getSize(new THREE.Vector3())

            
                viewer.scene.view.setView({position,  duration})
                viewer.mapViewer.moveTo(position, size, duration)  
            } 
            
        }
        return true
    },

    focusEntity(id){
        var entity = this.entities.find(e => e.sid == id)
        let boundingBox = entity.getBound()
        let boundSize = boundingBox.getSize(new THREE.Vector3())
        let center = boundingBox.getCenter(new THREE.Vector3())
        this.SplitScreen.focusOnObject(boundSize, center) 
        
        this.gotoEntity(id, false, 0)
        
    },
    
    removeIlligalArchi(){//删除marker数量小于3个的建筑，当保存时
        let needDelete = []
        
        this.entities.forEach(e=>{
            if(e.points.length<3){
                needDelete.push(e)
            }
        })
        
        needDelete.forEach(e=>this.removeEntity(e))
        
    },
}

/* 

规则

层级：

type            中文名                  改动范围           其他  
    
BUILDING        建筑                      xy              mesh由自己的基底以及所有floor的组成。如果删除所有floor，就剩一个平面。故而zMin == zMax
FLOOR           楼层                      z（xy未解锁）   点击楼层时房间也会显示，而建筑的其他楼层不显示线框，会显示面. 拖拽高度实际是拖拽楼层间的分界线，楼层之间不会有缝隙
ROOM            房间                      xyz（xy可加锁） 可能超出楼层外，因为楼层拖拽时房间没变。所以建筑不一定包容房间。
CUSTOM          自定义（现作房间）        xyz

（ xy范绘制时不能超出父级外轮廓，但父级编辑时可以进入子级轮廓。只要能解锁轮廓的都能切洞）


floor输入高度数值的限制和拖拽是一样的，相当于调节其zMax, 且不能超出其上层的zMax。 



navvis弊端:
    空间模型不会随着数据集移动而移动 (可以做成跟随，但是如果一个建筑对应多个数据集，那只能跟序号在前的数据集走）
    建筑点修改后，房间可能飘出建筑外的。 楼层高度修改后也是。
    调整高度时，看不到相邻的楼层界限，导致拖不动时像bug。
    调整高度时，侧面看有的重叠的部分比较高亮，感觉是冗余信息？有点乱
 
问题：
    磨砂材质
    没有阴影，可directionallight 加了呀
    
    
暂定一个数据集只属于一个实体（从最小的找起）    
    
    
https://testlaser.4dkankan.com/indoor/t-8KbK1JjubE/api/site_model

删点全删光了要删实体吗

 */

export {SiteModel}