import * as THREE from "../../../libs/three.js/build/three.module.js";
import { EventDispatcher } from "../../EventDispatcher.js";
import {TextSprite} from "../../TextSprite.js";
import ModelTextureMaterial from "./ModelTextureMaterial.js";
import Common from "../../utils/Common.js";
import math from "../../utils/math.js";
import cameraLight from "../../utils/cameraLight.js";
 
import Panorama from "./Panorama.js";

import QualityManager from './tile/QualityManager' 
import TileDownloader from './tile/TileDownloader'
import PanoRenderer from './tile/PanoRenderer' 
import TilePrioritizer from './tile/TilePrioritizer'
import { PanoSizeClass,Vectors} from '../../defines'


//import Axis from '../../viewer/Axis'
let raycaster = new THREE.Raycaster();
//let currentlyHovered = null;

var texLoader = new THREE.TextureLoader()
let cm = new ModelTextureMaterial()



let previousView = {
	controls: null,
	position: null,
	target: null,
};
let sm = new THREE.MeshBasicMaterial({side: THREE.BackSide});
var tileArr = []

/* let sgHigh = new THREE.SphereGeometry(1, 128, 128);
 */
export class Images360 extends EventDispatcher{

	constructor(viewer, params){
		super();

		this.viewer = viewer;

		this.selectingEnabled = true;

		this.panos = [];
		this.node = new THREE.Object3D();
        this.node.name = 'ImagesNode'
        //this.node2 = new THREE.Object3D();
        
     
         
        //add:
        let size = params.boundSize 
        this.cube = new THREE.Mesh(new THREE.BoxBufferGeometry(  size.x, size.y, size.z ), cm);
        this.cube.position.copy(params.center) 
        this.cube.visible = false; 
        this.cube.layers.set(Potree.config.renderLayers.skybox)
        this.cube.name = 'skybox'
        viewer.scene.scene.add(this.cube)
          
      
		this._visible = true;
		 

		this.currentPano = null;
        this.mouseLastMoveTime = Date.now()    
    
    
    
        this.tileDownloader = new TileDownloader;
        this.qualityManager = new QualityManager
        this.panoRenderer = new PanoRenderer(viewer, this.tileDownloader, this.qualityManager)
    
        this.basePanoSize = this.qualityManager.getPanoSize(PanoSizeClass.BASE);
        this.standardPanoSize = this.qualityManager.getPanoSize(PanoSizeClass.STANDARD);
        this.highPanoSize = this.qualityManager.getPanoSize(PanoSizeClass.HIGH);
        this.ultraHighPanoSize = this.qualityManager.getPanoSize(PanoSizeClass.ULTRAHIGH);
        this.tileDownloader.processPriorityQueue = !1;
        this.tileDownloader.tilePrioritizer = new TilePrioritizer(this.qualityManager, this.basePanoSize, this.standardPanoSize, this.highPanoSize, this.ultraHighPanoSize);    
    
        
        
        viewer.addEventListener('global_click'/* "global_drop" */, (e) => {//不用"mouseup" 是因为 mouseup有drag object时也会触发
            if(Potree.settings.unableNavigate || this.flying  || e.button != THREE.MOUSE.LEFT  )return //
            
            /* if(currentlyHovered && currentlyHovered.pano){
				this.focusPano(currentlyHovered.pano);
			}else{//add */
                if(!Potree.settings.dblToFocusPoint || this.currentPano){//双击不会focus点云 或者 已经focusPano了
                    this.flyToPanoClosestToMouse()   
                }
                
                  
            //}  
        })
        
        viewer.addEventListener("global_mousemove", (e) => { 
            if(!Potree.settings.unableNavigate && Potree.settings.ifShowMarker && e.hoverViewport == viewer.mainViewport){//如果不显示marker，就在点击时再更新
                this.updateClosestPano(e.intersectPoint)
            }
		});

        if(!Potree.settings.isOfficial){
            this.domRoot = viewer.renderer.domElement.parentElement;
            let elUnfocus = $("<input type='button' value='unfocus'></input>");
            elUnfocus.css({
                position : "absolute",
                right : '25%',
                bottom: '20px',
                zIndex: "10000",
                fontSize:'1em', color:"black",
                display:'none',
                background:'rgba(255,255,255,0.8)',
            })
            elUnfocus.on("click", () => this.unfocus());
            this.elUnfocus = elUnfocus;
            this.domRoot.appendChild(elUnfocus[0]);
            
            
            
            let elHide = $("<input type='button' value='隐藏点云'></input>")
            elHide.css({
                position : "absolute",
                right : '40%',
                bottom: '20px',
                zIndex: "10000",
                fontSize:'1em'  ,color:"black",
                width : '100px',
                background:'rgba(255,255,255,0.8)',
            }) 
            this.domRoot.appendChild(elHide[0]);
            elHide.on("click", (e) => { 
                let visi = viewer.getObjVisiByReason(viewer.scene.pointclouds[0], 'force')
                viewer.scene.pointclouds.forEach(e=>{ 
                    viewer.updateVisible(e, 'force', !visi) 
                })
                elHide.val(!visi ? "隐藏点云" : "显示点云")  
            });
            
            
            
            let elDisplayModel = $("<input type='button' value='>>全景'></input>")
            elDisplayModel.css({
                position : "absolute",
                right : '65%',
                bottom: '20px',
                zIndex: "10000",
                fontSize:'1em',color:"black",
                width : '100px',
                background:'rgba(255,255,255,0.8)',                
            })
            
            this.domRoot.appendChild(elDisplayModel[0]);
            elDisplayModel.on("click", (e) => { 
                Potree.settings.displayMode =  Potree.settings.displayMode == 'showPointCloud' ? 'showPanos' : 'showPointCloud'
            });
 
            this.elDisplayModel = elDisplayModel
        }
         
        
        
        {//切换模式
            let displayMode = '';  
            Object.defineProperty(Potree.settings , "displayMode",{  
                get: function() {
                    return displayMode
                },
                set:  (mode)=> {
                    if(mode != displayMode){
                        let config = Potree.config.displayMode[mode]
                        let config2 
                        
                        
                        if(this.isAtPano() ){//this.currentPano
                            if(this.flying)config2 = config.transition 
                            else config2 = config.atPano 
                        }else{
                            config2 = config.atPano 
                            if(mode == 'showPanos'){//自动飞入一个pano
                                //要改成飞进最近的。。。 
                                this.flyToPano({
                                    pano: /* this.currentPano ||  */Common.sortByScore(this.panos,null,[e=>-e.position.distanceTo(this.position)])[0].item,   
                                    callback: ()=>{
                                        Potree.settings.displayMode = mode 
                                    }
                                }) 
                                
                                return;
                            }else{
                                
                            } 
                        }
                        
                        
                        if(config2.showSkybox || config2.showPoint && config2.pointUsePanoTex){
                            this.tileDownloader.start()
                        }else{
                            this.tileDownloader.stop()
                        }
                        
                        
                        
                        if(config2.showSkybox || config2.pointUsePanoTex){
                            if(this.checkAndWaitForPanoLoad(this.currentPano, "low", "low", this.basePanoSize, ()=> {
                                    setTimeout( ()=>{
                                        Potree.settings.displayMode = mode
                                    },1)
                                })  
                            ){
                                return  
                            }
                        } 

                         
                        
                        viewer.scene.pointclouds.forEach(e=>{
                            viewer.updateVisible(e, 'displayMode', config2.showPoint) 
                        })
                        this.cube.visible = config2.showSkybox
                        if(config2.pointUsePanoTex){  
                            viewer.scene.pointclouds.forEach(e=>{
                                e.material.setProjectedPanos(this.currentPano,this.currentPano,  1) 
                            })
                        }else{
                            viewer.scene.pointclouds.forEach(e=>{
                                e.material.stopProjectedPanos() 
                            })
                        }
                        
                        this.cube.visible = config.atPano.showSkybox 
                        this.cube.visible && this.cube.material.setProjectedPanos(this.currentPano, this.currentPano, 1)
            
                         
                        
                        /* viewer.dispatchEvent({
                            type: "enableChangePos",
                            canLeavePano :  config.canLeavePano ,
                            viewport: 
                        }) */
                        viewer.mainViewport.unableChangePos = !config.canLeavePano
                        
                        displayMode = mode
                        if(this.elDisplayModel){
                            this.elDisplayModel.value = mode == 'showPointCloud' ? ">>全景" : '>>点云'
                        }
                    }                        
                }
            }) 
            Potree.settings.displayMode =  'showPointCloud'  
        }// 切换模式 end
        
        {//
            let currentPano = null;  
            Object.defineProperty(this , "currentPano",{  
                get: function() {
                    return currentPano 
                },
                set: function(e) {
                    if(e != currentPano){
                        
                        currentPano && currentPano.exit()
                        e && e.enter()
                        currentPano = e
                    }
                     
                } 
            })  
        }            
                
        {//是否显示marker
            let ifShowMarker = true;  
            Object.defineProperty(Potree.settings, "ifShowMarker",{  
                get: function() {
                    return ifShowMarker 
                },
                set:  (show)=>{
                    show = !!show
                    if(show != ifShowMarker){
                        this.panos.forEach(pano=>{
                            viewer.updateVisible(pano, 'ifShowMarker', show) 
                        })
                        //this.emit('markersDisplayChange', show) 
                        ifShowMarker = show
                    }
                     
                } 
            })  
        }            
                
                
        


        
        viewer.addEventListener("update", () => {
			this.update(viewer);
		});
		//viewer.inputHandler.addInputListener(this);
        
        
        
        var keys = {
			FORWARD: ['W'.charCodeAt(0), 38],
			BACKWARD: ['S'.charCodeAt(0), 40],
			LEFT: ['A'.charCodeAt(0), 37],
			RIGHT: ['D'.charCodeAt(0), 39],
        }
        viewer.inputHandler.addEventListener('keydown',(e)=>{ 
            if(Potree.settings.displayMode == 'showPanos'){
                for(let i in keys){
                    if(keys[i].some(a => a == e.keyCode)){
                        switch(i){
                            case 'FORWARD':
                                this.flyLocalDirection(Vectors.FORWARD.clone()); 
                                break;
                            case 'BACKWARD':
                                this.flyLocalDirection(Vectors.BACK.clone()); 
                                break;
                            case 'LEFT':
                                this.flyLocalDirection(Vectors.LEFT.clone());
                                break;
                            case 'RIGHT':
                                this.flyLocalDirection(Vectors.RIGHT.clone());
                                break;
                            
                        }
                         
                        break;
                    } 
                } 
            }
        })
        
        
        
		 
  
	}; 
    
    flyLocalDirection(dir) {
        var direction = this.getDirection(dir),
            option1 = 1 === dir.y ? .4 : .75,
            option2 = 1 === Math.abs(dir.x);
        return this.flyDirection(direction, option1, option2)
    }
    getDirection(e) {
        if(!e){
            return viewer.scene.view.direction
        }else{
            return e = e ? e : (new THREE.Vector3).copy(Vectors.FORWARD),
            e.applyQuaternion(viewer.scene.getActiveCamera().quaternion)
        }
       
    }
    get position(){
        return this.viewer.scene.view.position.clone()
    }
    
    
    get visible(){
		return this._visible;
	}
	set visible(visible){
		if(this._visible === visible){
			return;
		}


		for(const image of this.panos){
			image.mesh.visible = visible && (this.currentPano == null);
		}

		//this.sphere.visible = visible && (this.currentPano != null);
		this._visible = visible;
		this.dispatchEvent({
			type: "visibility_changed",
			panos: this,
		});
	}
 
 
 
    isAtPano(){//  
        return this.currentPano && viewer.scene.view.position.equals(this.currentPano.position)
    }
 
 
 
 


 


    



	


    flyToPano(toPano) {
        if(toPano instanceof Panorama){
            toPano = {pano: toPano}
        }
        
        if(!this.currentPano){
            return this.focusPano(toPano) 
        }
        
        let done = (makeIt)=>{
            toPano.deferred && toPano.deferred.resolve(makeIt)
            makeIt && toPano.callback && toPano.callback()
        }
        if(this.currentPano == pano && this.isAtPano() && !toPano.target ){
            return done(true);
        }
        if(this.flying){
            return done(false)
        }
        
        let target = toPano.target 
        let easeName = toPano.easeName || 'easeInOutQuad'
        
        let config = Potree.config.displayMode[Potree.settings.displayMode]
        var pointcloudVisi = config.atPano.showPoint  //viewer.scene.pointclouds[0].visible
        
        
        var pano = toPano.pano 
        
        
        var duration = toPano.duration || 300+Math.min(Potree.config.transitionsTime.flySpeed * this.position.distanceTo(pano.position),  Potree.config.transitionsTime.panoToPano )  
        
        //console.log("flyto "+pano.id + ' duration: ' + duration )     
        
        this.nextPano = pano
        //不飞的话是否不要执行这段？
        if(config.atPano.showSkybox || config.atPano.pointUsePanoTex){
            if(this.checkAndWaitForPanoLoad(pano, "high", "low", this.basePanoSize, ()=> {
                    setTimeout( ()=>{
                        this.flyToPano(toPano)
                    },1)
                })  
            ){
                return  
            }
        } 
        
		//this.load(pano).then( () => {  
            this.cube.visible = config.atPano.showSkybox 
            this.cube.visible && this.cube.material.setProjectedPanos(this.currentPano, pano, 0)
            
            
            
            
            viewer.scene.pointclouds.forEach(e=>{
                viewer.updateVisible(e, 'displayMode',config.transition.showPoint) 
            }) 
             
            
            if(config.transition.pointUsePanoTex){
                let easeInOutRatio = pointcloudVisi ? 0.3 : 0
                viewer.scene.pointclouds.forEach(e=>{
                    e.material.setProjectedPanos(this.currentPano, pano, 0, easeInOutRatio)
                }) 
            } 
               
            
            const endPosition = pano.position.clone() 
            this.flying = true
            viewer.scene.view.setView(endPosition, target ,duration,  ()=>{//done
                
                if(!config.atPano.pointUsePanoTex){ 
                    viewer.scene.pointclouds.forEach(e=>{
                        e.material.stopProjectedPanos()
                    })
                }
                //this.currentPano.exit()
                //pano.enter()
                this.currentPano = pano;
                this.flying = false 
                this.nextPano = null;
                viewer.scene.pointclouds.forEach(e=>{
                    viewer.updateVisible(e, 'displayMode',pointcloudVisi) 
                })
                done(true);
            },(progress)=>{//onUpdate
                this.cube.material.uniforms.progress.value = progress 
                
                viewer.scene.pointclouds.forEach(e=>{
                    e.material.uniforms.progress.value = progress 
                })
            }, easeName )
            
            {
                toPano.duration = duration
                toPano.easeName = easeName
                this.emit('flyToPano', toPano)
            }
        //})
    }




	focusPano(toPano ){
		if(this.currentPano !== null){
			return this.flyToPano(toPano); 
		}
        if(toPano instanceof Panorama){
            toPano = {pano: toPano}
        }
        let done = (makeIt)=>{
            toPano.deferred && toPano.deferred.resolve(makeIt)
            makeIt && toPano.callback && toPano.callback()
        }
        
        var pano = toPano.pano 
        let config = Potree.config.displayMode[Potree.settings.displayMode]
		previousView = {
			//controls: this.viewer.controls, 
			position: this.position,
			target: viewer.scene.view.getPivot(),
		};

		//this.viewer.setControls(this.viewer.orbitControls);
		this.viewer.orbitControls.doubleClockZoomEnabled = false;

		for(let image of this.panos){
			image.mesh.visible = false;
		}

		this.selectingEnabled = false;
 
        //console.log("flyto "+pano.file.split('/').pop()  )
        var dur = toPano.duration == void 0 ? 700 : toPano.duration
        
        if(config.atPano.showSkybox){
            if ( this.checkAndWaitForPanoLoad(pano, "low", "low", this.basePanoSize, ()=> {
                    setTimeout( ()=>{
                        this.focusPano(toPano)
                    },1)
                })  
            ) {
                return ;
            }
        }
		//this.load(pano).then( () => {
            
			//this.panos.forEach(e=>e.marker.material.depthTest = false) 
            
             
            
            this.cube.visible = config.atPano.showSkybox  
            this.cube.visible && this.cube.material.setProjectedPanos(pano, pano, 0)
             
            if(config.atPano.pointUsePanoTex){//false
                viewer.scene.pointclouds.forEach(e=>{
                    e.material.setProjectedPanos(pano, pano, 0)
                })
            } 
             
		//});
 
        
        let newCamPos = pano.position.clone()
        let target = newCamPos.clone().add(viewer.scene.view.direction)  
        this.flying = true
        
		viewer.scene.view.setView( newCamPos,  target, dur , ()=>{//done 
            //pano.enter()
            this.flying = false  
            /* viewer.scene.pointclouds.forEach(e=>{
                e.visible = pointcloudVisi
            }) */
            this.currentPano = pano;
            done(true)
        },(progress)=>{//onUpdate
            /* this.cube.material.uniforms.progress.value = progress 
            
            viewer.scene.pointclouds.forEach(e=>{
                e.material.uniforms.progress.value = progress 
            }) */
        } )
		 

		

		this.elUnfocus && (this.elUnfocus[0].style.display = "");
	}


	unfocus(o={}){
		this.selectingEnabled = true;
        Potree.settings.displayMode = 'showPointCloud' 
        
        
        
		 

		if(!this.currentPano && !o.position){
			return;
		}
          
        this.cube.visible = false
 

		viewer.orbitControls.doubleClockZoomEnabled = true;
		 

		viewer.scene.view.setView(
			o.position || previousView.position, 
			o.target || previousView.target,
			o.duration || 500,
            ()=>{ //done
                for(let pano of this.panos){
                    pano.mesh.visible = true;
                    //pano.marker.material.depthTest = true
                }
                o.callback && o.callback()            
            }
		);

        //this.currentPano.exit()
		this.currentPano = null;

		this.elUnfocus && (this.elUnfocus[0].style.display = "none");
	}






    /* bump(direction) {//撞墙弹回效果
        if (!this.flying) {
            var t, i, n, r = settings.transition,
                o = (r.flytimeMaxDistanceThreshold * r.flytimeDistanceMultiplier + r.flyTime) / 10,
                a = this.camera.getWorldDirection().dot(direction),
                s = Math.abs(a) > .5;
            if (s)
                t = function() {
                    transitions.start(lerp.property(this.cameraControls.cameras[ViewMode.PANORAMA], "zoom", a > 0 ? 1.04 : .96), o, i, 0, easing.easeInOutSine, "bumpZStart")
                }
                .bind(this),
                i = function() {
                    transitions.start(lerp.property(this.cameraControls.cameras[ViewMode.PANORAMA], "zoom", 1), 3 * o, n, 0, easing.easeInOutSine, "bumpZRelax")
                }
                .bind(this);
            else {
                var l = this.camera.position.clone(),
                    c = direction.clone();
                this.raycaster.set(l, c);
                var h = this.model.floors.reduce(function(e, t) {
                        return e.concat(t.collider.children)
                    }, []),
                    d = this.raycaster.intersectObjects(h),
                    p = d.length > 0 ? d[0].distance / 25 : .04,
                    g = l.clone().add(c.multiplyScalar(p));
                t = function() {
                        transitions.start(lerp.vector(this.cameraControls.cameras[ViewMode.PANORAMA].position, g), o, i, 0, easing.easeInOutSine, "bumpTStart")
                    }
                    .bind(this),
                    i = function() {
                        transitions.start(lerp.vector(this.cameraControls.cameras[ViewMode.PANORAMA].position, l), 5 * o, n, 0, easing.easeInOutSine, "bumpTRelax")
                    }
                    .bind(this)
            }
            
            
            n = (){
                this.mode == "panorama" && (this.flying = !1)  //改
            }
            
            this.flying = !0,
            t()
        }
    };
 */





	/* load(pano, ){ 
		return new Promise(resolve => {
			let texture = texLoader.load(pano.file, resolve);
			texture.wrapS = THREE.RepeatWrapping;
			texture.repeat.x = -1;
            texture.flipY = false//add
			pano.texture = texture;
            
            //add
            texture.wrapS = texture.wrapT = THREE.ClampToEdgeWrapping;
            texture.minFilter = THREE.LinearFilter;
            texture.magFilter = THREE.LinearFilter;
            texture.generateMipmaps = true;  
            
		}); 
	} */



    flyToPanoClosestToMouse() {
        /* if (Date.now() - this.mouseLastMoveTime > 50) {
            //this.intersect = this.getMouseIntersect();
            this.intersect && this.updateClosestPano(this.intersect);
        } */
         
        if(!Potree.settings.ifShowMarker){//不显示marker的时候mousemove没更新鼠标最近点所以更新
            this.updateClosestPano(viewer.inputHandler.intersectPoint)
        }
        
        
        if (this.closestPano) {
            return this.flyToPano({
                pano: this.closestPano
            });
        } 
        var direction = this.viewer.inputHandler.getMouseDirection().direction;
        this.flyDirection(direction)
    }


    flyDirection(direction, option1, option2) {
        var deferred = $.Deferred();
        //this.history.invalidate();
        var panoSet = this.closestPanoInDirection(direction, option1, option2);
        if (panoSet) {
            this.flyToPano({
                pano: panoSet,
                callback: deferred.resolve.bind(deferred, !0)
            }  );
        } else {
            //this.bump(direction);
            deferred.resolve(!1);
        }

        return deferred.promise();
    }
    closestPanoInDirection(direction, option1, option2) {
        return this.rankedPanoInDirection(0, direction, option1, option2)
    }
    rankedPanoInDirection(t, direction, option1, option2){
        var panoSet = {
            pano: null,
            candidates: [] //缓存顺序--如果需要打印的话
        };
        t || (t = 0);
        option1 = void 0 !== option1 ? option1 : .75;
        var o = option2 ? "angle" : "direction";
        var request = [//必要条件 
            Images360.filters.inPanoDirection( this.position, direction, option1), 
            //Images360.filters.isNeighbourPanoTo(this.currentPano), 
            Images360.filters.not(this.currentPano)
        ] 
        var list = [//决胜项目
            Images360.scoreFunctions.distanceSquared(this.currentPano),
            Images360.scoreFunctions[o]( this.position, direction)
        ]; 
         
        this.findRankedByScore(t,request,list,panoSet);
        
        return panoSet.pano;
		
    }

    updateClosestPano(intersect) {//距离reticule最近的点  可以是null
    
        intersect = intersect && intersect.location
        if(!intersect)return
        //intersect = intersect && (intersect.location || intersect)
        
        var filterFuncs = [];
        //if (this.mode === ViewMode.PANORAMA) {
            /* if (!Potree.settings.isOfficial && !this.currentPano) {
                return;
            } */
        if(this.isAtPano() ){ 
            filterFuncs.push(Images360.filters.not(this.currentPano));
 			filterFuncs.push(Images360.filters.inFloorDirection(this.position, viewer.scene.view.direction, .25)),//许钟文改
			//filterFuncs.push(Images360.filters.isNeighbourPanoTo(this.currentPano));
            filterFuncs.push(Images360.filters.isCloseEnoughTo(intersect, 0.35));
       /*  } else {
			if(!this.linkEditor.noPanoHasNeighbor){//xzw add  如果不是全孤立点的话，就要避开孤立点
				filterFuncs.push((pano)=>{return this.linkEditor.checkHasNeighbor(pano)})
			}
            objects.record.control.isRecording || filterFuncs.push(Panorama.filters.isOnVisibleFloor());
            this.mode !== ViewMode.FLOORPLAN && filterFuncs.push(Panorama.filters.inDirection(this.position, this.getDirection(), .25));
        } */
        }
        
        var pano = Common.find(this.panos,  filterFuncs, [Images360.sortFunctions.floorDistanceToPoint(intersect)]);
        if (pano != this.closestPano) {
            pano && (this.isPanoHover = !0);
            //触发事件，导致地面的marker变清晰
            //this.emit(PlayerEvents.ClosestPanoChanging, this.closestPano, pano, this.mode);
            
            this.closestPanoChanging(this.closestPano, pano)
             
            this.closestPano = pano;
        } else {
            this.isPanoHover = !1;
        }
    }



    closestPanoChanging(oldPano, newPano){
        if(!Potree.settings.ifShowMarker)return
        
        oldPano && oldPano.hoverOff()
        newPano && newPano.hoverOn()
        
        
    }



	/* handleHovering(){
		let pointer = viewer.inputHandler.pointer;
		let camera = viewer.scene.getActiveCamera();
		let domElement = viewer.renderer.domElement;

		let ray = Potree.Utils.mouseToRay(pointer, camera, domElement.clientWidth, domElement.clientHeight);

		// let tStart = performance.now();
		raycaster.ray.copy(ray);
		let intersections = raycaster.intersectObjects(this.node.children);

		if(intersections.length === 0){
			// label.visible = false;

			return;
		}

		let intersection = intersections[0];
		currentlyHovered = intersection.object;
		currentlyHovered.material = smHovered;

		//label.visible = true;
		//label.setText(currentlyHovered.pano.file);
		//currentlyHovered.getWorldPosition(label.position);
	}
    */
    
    
	update(){

		let {viewer} = this;

		/* if(currentlyHovered){
			currentlyHovered.material = sm;
			currentlyHovered = null;
		}  

		if(this.selectingEnabled){
			this.handleHovering();
		} */


        if(this.tileDownloader.started){
            var vectorForward = viewer.scene.view.direction.clone()   
            vectorForward = math.convertVector.ZupToYup(vectorForward)
            this.updateTileDownloader(tileArr,vectorForward);
            this.updatePanoRenderer(vectorForward) 
        }
        
        
        

	}
    
     
    
    
    findRankedByScore(e, t, i, n) {
        n && (n.candidates = null,  //candidates 缓存顺序--如果需要打印的话
        n.pano = null),
        e || (e = 0);
        var r = Common.sortByScore(this.panos, t, i);
        return !r || 0 === r.length || e >= r.length ? null : (n && (n.candidates = r,
        n.pano = r[e].item),
        r[e].item)
    }
    
     
  
    updateTileDownloader(t, vectorForward) { 
        var i = this.nextPano || this.currentPano; 
        if(i){  
            this.tileDownloader.tilePrioritizer.updateCriteria(i, viewer.scene.view.position.clone() , vectorForward, t.length > 0 ? t : null),
            this.tileDownloader.processPriorityQueue = !0 
        }  
    } 
    
    
    updatePanoRenderer(vectorForward) {
        var i = this.nextPano || this.currentPano; 
        if(i){  
            if (this.panoRenderer.hasQueuedTiles() && i) {                  
                this.panoRenderer.updateDirection(vectorForward);
            }
        }
         
    } 
    
    
    
    
    
    
    
    checkAndWaitForTiledPanoLoad(pano, basePanoSize, callback1, callback2, progressCallback, iswait, isclear, l) {
          
        if (!pano) {
            console.error("Player.checkAndWaitForTiledPanoLoad() -> Cannot load texture for null pano.");
        }
         
        var vectorForward = viewer.scene.view.direction.clone()
        vectorForward = math.convertVector.ZupToYup(vectorForward)  
        
        if (!pano.isLoaded(basePanoSize)) {
            iswait && viewer.waitForLoad(pano, function() {//发送loading
                return pano.isLoaded(basePanoSize)
            }); 
            
        
            
            var fov = {//test for direction  预加载的边缘有一丢丢不准确，尤其在相机倾斜时（4dkk也是）。
                hFov: cameraLight.getHFOVForCamera(viewer.scene.getActiveCamera(), viewer.renderArea.clientWidth, viewer.renderArea.clientHeight),
				vFov: viewer.scene.getActiveCamera().fov
            }//原先是null，不要求方向
            
            pano.loadTiledPano(/* 1024  */ basePanoSize  , vectorForward, fov, isclear, l, null).done(function(e, t) {
                    callback1 && callback1(e, t)
                }
                .bind(this)).fail(function(msg) {
                    callback2 && callback2(msg)
                }
                .bind(this)).progress(function(e, t, i) {
                    progressCallback && progressCallback(e, t, i)
                }
                .bind(this));

            return !0;
        }
         
    } 




    fitPanoTowardPoint(o){  //寻找最适合的点位
		var point = o.point, 
			require = o.require || [],
			rank = o.rank || [],
			force = o.force,
			getAll = o.getAll,  
            bestDistance = o.bestDistance || 0
        let camera = viewer.scene.getActiveCamera()
        
        
        //if(o.floor)require.push(Panorama.filters.atFloor(o.floor))
            
        
        if(o.boundSphere){//只接受boundSphere
            let aspect = 1//size.x / size.y
            let dis
            if(camera.aspect > aspect){//视野更宽则用bound的纵向来决定
                dis = /* size.y */o.boundSphere.radius/* / 2  *// THREE.Math.degToRad(camera.fov / 2)
            }else{
                let hfov = cameraLight.getHFOVForCamera(camera, camera.aspect, 1 );
                dis = /* size.x */ o.boundSphere.radius /* / 2 */ / THREE.Math.degToRad(hfov / 2)
            }
                
            bestDistance = dis*0.8 
            
        } 
        
        
        let bestDisSquared = bestDistance * bestDistance
        rank.push((pano)=>{
            return -Math.abs(pano.position.distanceToSquared(point) - bestDisSquared)
        }) 
     
		/* var temp = {position:point}
 		rank.push(Panorama.scoreFunctions.distanceSquared(temp, -2)); */
		 
		var g = Common.sortByScore(this.panos,  require, rank);
		
		if(getAll)return g;
		return g && g.length > 0 && g[0].item
		
	}

};



   


//判断当前点是否加载了全景图
Images360.prototype.checkAndWaitForPanoLoad = function() {
    var isLoadedPanos = {},
        LoadedTimePanos = {},
        maxTime = 5e3;
    var overtime = function() {
        for (var panoId in isLoadedPanos)
            if (isLoadedPanos.hasOwnProperty(panoId) && isLoadedPanos[panoId]) {
                var differTime = performance.now() - LoadedTimePanos[panoId];
                if (differTime < maxTime)
                    return !0
            }
        return !1
    }
    
    return function(pano, imgQuality1, imgQuality2, basePanoSize, doneFun1, doneFun2, progressCallback, iswait, isclear, p   ) {
        if (overtime())
            return !0;
   
        var callback1 = (param1, param2)=>{ 
            setTimeout(()=>{
                isLoadedPanos[pano.id] = !1;
                doneFun1 && doneFun1(param1, param2); 
            },1)
        } 


        var callback2 = (param)=>{//没有看到有传doneFun2的
            setTimeout(()=>{
                isLoadedPanos[pano.id] = !1;
                doneFun2 && doneFun2(param); 
            },1)
        } 

        try {
            null !== iswait && void 0 !== iswait || (iswait = !0);
             
            isLoadedPanos[pano.id] = this.checkAndWaitForTiledPanoLoad(pano, basePanoSize, callback1, callback2, progressCallback, iswait, isclear, p   );
             
            isLoadedPanos[pano.id] && (LoadedTimePanos[pano.id] = performance.now());
            return isLoadedPanos[pano.id];
        } catch (msg) {
            isLoadedPanos[pano.id] = !1;
            LoadedTimePanos[pano.id] = performance.now() - maxTime;
            throw msg;
        }
    }
}()







Images360.filters = { 
    inPanoDirection : function(e, t, i) { 
        return function(n) {
            var r = n.floorPosition.clone().sub(e).setZ(0).normalize()    //忽略上下角度，这样即使看得很低也能走
			  , o = n.position.clone().sub(e).normalize(); 
			return r.dot(t.clone().setZ(0).normalize()) > i || o.dot(t) > i
        }
    },
    inFloorDirection: function(pos, e, o) {//许钟文 改 for鱼眼
		return function(n) {
			var i = n.floorPosition.clone().sub(pos).setZ(0).normalize();//改成在xz方向上,否则点击墙面不会移动
			return i.dot(e) > o
		}
	}, 
    isNotBehindNormal: function(e, t) {
        var i = new THREE.Vector3;
        return t = t.clone(),
        function(n) {
            var r = i.copy(n.position).sub(e).normalize();
            return r.dot(t) > 0
        }
    },
    isCloseEnoughTo: function(e, t) {
        return function(i) {//因为marker可能比地面高，所以识别范围要比marker看起来更近一些。(因为投影到地板的位置比marker更近)
            return e.distanceTo(i.floorPosition) < t //许钟文
        }
    },
    
    not: function(e) {
        return function(t) {
            return t !== e
        }
    }   
}


Images360.scoreFunctions = {
   direction: function(e, t) {
        return function(i) {
            var pos = i.position.clone()
            var n = pos.clone().sub(e).normalize();
            return n.dot(t) * 10 
        }
    },
     
    distanceSquared: function(e) {
        var pos1 = e.position.clone()
        return  function(i) {//许钟文 改
            var pos2 = i.position.clone()
            return pos1.distanceToSquared(pos2) * -1 
        }
    },
    angle: function(e, t) {
        return function(i) {
            var n = i.position.clone().sub(e).normalize();
            return n.angleTo(t) * Potree.config.navigation.angleFactor
        }
    },   
}

Images360.sortFunctions =  {//排序函数，涉及到两个item相减
    floorDistanceToPoint: function(e) {
        return function(t, i) {
            return t.floorPosition.distanceTo(e) - i.floorPosition.distanceTo(e)
        }
    }, 
    
    
}    

export class Images360Loader{ 

    static async load(viewer, params, callback ){

		 
		
		let center = viewer.transform.lonlatToLocal.inverse(viewer.bound.center)
        center = {lat:center.y, lon:center.x} //中心点 
        
        Potree.loadPanos(center,(data)=>{
            
            let images360 = new Images360(viewer, params);
            
            data = data.sort(function(a,b){return a.id-b.id})
           
            data.forEach((info,i)=>{  
                if(Potree.fileServer){
                    info.id = i //info的id是一长串数字，改简单点
                } 
                let pano = new Panorama( info,  params.transform, images360   );
                
                /* pano.mesh.layers.set(Potree.config.renderLayers.marker)
                pano.marker.layers.set(Potree.config.renderLayers.marker)  */
             
                images360.panos.push(pano);

            })
            
            
            viewer.setObjectLayers(images360.node, 'marker')
             
            viewer.images360 = window.images360 = images360//add
            images360.tileDownloader.setPanoData(images360.panos, [] /* , Potree.settings.number */);

            {
                var panosBound = new THREE.Box3
                images360.panos.forEach(pano=>{
                    panosBound.expandByPoint(pano.position)
                }) 
                images360.bound = {
                    bounding:panosBound,
                    size: panosBound.getSize(new THREE.Vector3),
                    center: panosBound.getCenter(new THREE.Vector3)
                }
            }

            callback && callback(images360)
        })   
	}
};