import * as THREE from "../../../libs/three.js/build/three.module.js";

import SplitScreen from "./SplitScreen.js";


import AxisViewer from "../objects/tool/AxisViewer.js";
 

const viewportProps = [
    {
        left:0.5,
        bottom:0.5,
        width: 0.5,height:0.5,
        name : 'MainView',   
        //view: viewer.scene.view,
        active: true,
    },
    {
        left:0,
        bottom:0.5,
        width: 0.5,height:0.5,
        name : 'top',   
        name2 : 'mapViewport', 
        axis:["x","y"],
        direction : new THREE.Vector3(0,0,-1), //镜头朝向
        //axisSign:[1,1],
        active: true,
        //相机位置在z轴正向
    },
    {
        left:0.5,
        bottom:0,
        width: 0.5,height:0.5,
        name : 'right', 
        axis:["y","z"],
        direction : new THREE.Vector3(1,0,0),
        //axisSign:[1,1],
        active: true,
        //相机位置在x轴负向  右下角屏
    },
    {
        left:0,
        bottom:0,
        width: 0.5,height:0.5, 
        name : 'back', 
        axis:["x","z"],
        direction : new THREE.Vector3(0,-1,0),
        //axisSign:[-1,1],    // 从镜头方向看  x向左 所以取负 
        active: true,
        //相机位置在y轴正向  左下角屏
    },
]




var SplitScreen4Views = new SplitScreen({noRotSide:true})

  

 
SplitScreen4Views.split = function(o={}){
    var defaultCamera = viewer.scene.getActiveCamera()
   
    let {boundSize, center} = viewer.bound
        
    viewer.setLimitFar(false) 
    viewer.mapViewer.attachToMainViewer(true,'split4Screens','dontSet') 
    
    viewer.renderer.clear() //clear back的viewport左边的1px宽的部分，因setScissor的bug
    
    
    let viewports = this.splitStart(viewportProps)
    
    //覆盖在map上、点云等其他物体之下的一层背景
    let mapViewport = viewer.mapViewer.viewports[0]   
    mapViewport.noPointcloud = false
    //隐藏地图游标
    //Potree.Utils.updateVisible(viewer.mapViewer.cursor, 'split4Screens', false)
    /* viewer.images360.panos.forEach(pano=>{
        Potree.Utils.updateVisible(pano.mapMarker, 'split4Screens', false) //希望这时候mapMarker已经建好了吧
    }) */
        
        
    /* viewer.images360.panos.forEach(pano=>{
        pano.addLabel2()
        Potree.Utils.updateVisible(pano.label2, 'notDisplay', true)
        pano.dispatchEvent({type:'changeMarkerTex',name:'ring'})
    }) */ 
        
    //材质 
    this.statesBefore = { 
        pointDensity : Potree.settings.pointDensity,
        displayMode : Potree.settings.displayMode,
        
        position: viewer.images360.position,
        target: viewer.scene.view.getPivot(),
        currentPano: viewer.images360.currentPano,
        
        //---
        //ifShowMarker : Potree.settings.ifShowMarker, 
    }
    
    viewer.setPointStandardMat(true,null,true) //切换到标准模式（主要为了mainViewport）  点云使用标准大小 
    
    var matBefore = { 
        opacity : new Map() 
    } 
    var newOpacityMap = new Map() 
     
    viewer.scene.pointclouds.forEach(e=>{
        matBefore.opacity.set(e, e.temp.pointOpacity) 
        matBefore.colorType = e.material.activeAttributeName 
        /* { 
            var map = new Map()
            newOpacityMap.set(e, map )
            var size = e.bound.getSize()
            viewports.forEach(viewport=>{//根据bound设置opacity，越小的要靠越近，需要大的opacity。但似乎影响太大了
                if(viewport.name == 'MainView')return;
                var prop = viewportProps.find(v => viewport.name == v.name2||viewport.name == v.name)
                let axis = prop.axis
                var width = size[axis[0]]
                var height = size[axis[1]]
                var area = width * height
                map.set(viewport, 5000/area);
            })
            
        }  */ 
    }) 
    
    let beforeRender = function(){ 
        viewer.dealBeforeRender = true  //使不全部渲染
        
        viewer.scene.pointclouds.forEach(e=>{ 
            if(this.name == "MainView"){ 
                e.material.activeAttributeName = matBefore.colorType // 'rgba'
                e.material.useFilterByNormal = false 
                //e.material.pointSizeType = Potree.config.material.pointSizeType
                e.changePointOpacity(matBefore.opacity.get(e)) //1 //恢复下 e.temp.pointOpacity 其实就是1
                
                Potree.settings.pointDensity = 'fourViewportsMain'/* 'fourViewports' */ //本来想比另外三屏高一点质量，结果发现会闪烁，因为点云加载需要时间 （navvis仿版也是一样，以后看看能否优化）
                
            }else{ 
                e.material.activeAttributeName = "color"
                e.material.useFilterByNormal = true 
                //e.material.pointSizeType = 'ADAPTIVE'
                
                Potree.settings.pointDensity = 'fourViewports' //强制降低点云质量
                
                //侧面重叠概率更大，所以透明度调小
                e.changePointOpacity(this.name == "mapViewport" ? 0.5 : 0.1/* newOpacityMap.get(e).get(viewport), true */);  //多数据集有的数据集很小，放大后显示特别淡
                //console.log(e.name, viewport.name, e.temp.pointOpacity, e.material.opacity)
            } 
            
            
            viewer.images360.panos.forEach(pano=>{
                if(this.name == 'mapViewport'){
                    Potree.Utils.updateVisible(pano.marker, 'showOnMap', true, 1, 'add'  ) 
                }else{
                    Potree.Utils.updateVisible(pano.marker, 'showOnMap', false, 1, 'cancel'  ) 
                }
            }) 
        }) 
        viewer.dealBeforeRender = false           
    }    
    viewports.forEach(viewport=>{
        viewport.beforeRender = beforeRender
        new AxisViewer(viewport, viewer.renderArea,{domStyle:{
            top: '22px',//viewport.name == 'mapViewport' ? '2px' : '-25px',
            right: (viewport.name == 'mapViewport') ? '30px' : '2px',
            width:'80px',height:'80px'}
        })
    })
     
      
     
    this.enableMap(false)
    this.enableFloorplan(false)
    viewer.mapViewer.setViewLimit('null') //多数据集距离远时可以任意远，所以不限制了。但是这样就会看到地图边界了怎么办？超出后让地图隐藏？
    //viewer.dispatchEvent({'type': 'beginSplitView' }) 
    //viewer.updateScreenSize({forceUpdateSize:true})   
    
    
      
    //this.viewportFitBound(mapViewport, boundSize, center)
    //Potree.settings.ifShowMarker = false
    Potree.settings.displayMode = 'showPointCloud'
} 


 
  


SplitScreen4Views.recover = function(){
    
    viewer.viewports.forEach(e=>{e.axis.dispose()})
    
    this.unSplit()
    viewer.mapViewer.viewports[0].beforeRender = null; 
    /* const {width, height} = viewer.renderer.getSize(new THREE.Vector2());
    viewer.renderer.setViewport(0,0,width,height)
    viewer.renderer.setScissorTest( false ); */
    
    viewer.setView({
        position: this.statesBefore.position,
        target: this.statesBefore.target,
        currentPano: this.statesBefore.currentPano,
        duration:300,
        callback:function(){ 
        }
    })
    
    
    
    viewer.mainViewport.beforeRender = null 
    viewer.setLimitFar(true)
    
    let mapViewport = viewer.mapViewer.viewports[0]
    viewer.mapViewer.attachToMainViewer(false) 
    //Potree.Utils.updateVisible(viewer.mapViewer.cursor, 'split4Screens', true)
    /* viewer.images360.panos.forEach(pano=>{
        Potree.Utils.updateVisible(pano.mapMarker, 'split4Screens', true)
    }) */
    
    /* viewer.images360.panos.forEach(pano=>{
        Potree.Utils.updateVisible(pano.label2, 'notDisplay', false  )
        pano.dispatchEvent({type:'changeMarkerTex',name:'default'})
    }) */
    
    mapViewport.noPointcloud = true
    { 
        this.enableMap(Potree.settings.mapEnable)
        this.enableFloorplan(Potree.settings.floorplanEnable)
        if(this.floorplanListener){
            viewer.mapViewer.mapLayer.removeEventListener( 'floorplanLoaded', this.floorplanListener )  
            this.floorplanListener = null  
        } 
    }
     
    Potree.settings.pointDensity = this.statesBefore.pointDensity
    if(!Potree.settings.isOfficial){
        Potree.settings.displayMode = this.statesBefore.displayMode
    }
    
    viewer.scene.pointclouds.forEach(e=>{  
        e.material.useFilterByNormal = false 
        //e.material.pointSizeType = Potree.config.material.pointSizeType        
    }) 
    
    
    
    
    
    viewer.setPointStandardMat(false)
    viewer.mapViewer.setViewLimit('standard')
    
    viewer.images360.panos.forEach(pano=>{ 
        Potree.Utils.updateVisible(pano.marker, 'showOnMap', false, 1, 'cancel'  )  
    })

    //Potree.settings.ifShowMarker = this.statesBefore.ifShowMarker
    //viewer.dispatchEvent({'type': 'finishSplitView' }) 
    //viewer.updateScreenSize({forceUpdateSize:true})  
    
} 

 


SplitScreen4Views.updateMapViewerBG = function(){
    let mapViewport = viewer.mapViewer.viewports[0]
    if(this.splited && (this.floorplanEnabled || this.mapEnabled)){
        mapViewport.background = 'overlayColor'
        mapViewport.backgroundColor = new THREE.Color(0,0,0)
        mapViewport.backgroundOpacity = 0.5; 
    }else{
        mapViewport.background = null
        mapViewport.backgroundColor = null
        mapViewport.backgroundOpacity = null
    }
    viewer.mapViewer.mapChanged = true
    viewer.mapViewer.needUpdate = true
}

SplitScreen4Views.setFloorplanDisplay = function(e, show=false){  
    e.floorplan.setEnable(show)
}

 
SplitScreen4Views.enableMap = function(enable){ 
    let map = viewer.mapViewer.mapLayer.maps.find(e=>e.name == 'map') 
    map.setEnable(!!enable) 
    
    //viewer.mapViewer.mapGradientBG = viewer.background == 'gradient' && !enable
    this.mapEnabled = enable
    this.updateMapViewerBG()
   
    
    
},
//直接覆盖原设置

SplitScreen4Views.enableFloorplan = function(enable){ //是否让自定义的平面图显示
    let floorplans = viewer.mapViewer.mapLayer.maps.filter(e=>e.name.includes('floorplan'))
    
    if(this.floorplanListener){
        viewer.mapViewer.mapLayer.removeEventListener( 'floorplanLoaded', this.floorplanListener )  
    }
    this.floorplanListener = (e)=>{
        this.setFloorplanDisplay(e, enable) 
    }
    
    viewer.mapViewer.mapLayer.addEventListener( 'floorplanLoaded', this.floorplanListener ) //万一之后才加载 
    
    
    if(!enable){ 
        //隐藏平面图 
        floorplans.forEach(floorplan=>this.setFloorplanDisplay({floorplan},false))  
         
    }else{
         
        floorplans.forEach(floorplan=>this.setFloorplanDisplay({floorplan},true))  
        
    }
    
    
    if (enable && floorplans.length == 0) Potree.loadMapEntity('all',true)
    
    this.floorplanEnabled = enable
    this.updateMapViewerBG()
},

/* viewportFitBound:function(viewport, boundSize, center){  //使一个viewport聚焦在某个范围
    var prop = viewportProps.find(v => viewport.name == v.name2||viewport.name == v.name)
    let axis = prop.axis 
    let expand = 10;
    let position = center.clone()
    var moveAtAxis = ['x','y','z'].find(e=>!(axis.includes(e))) 
    
    if(viewport.name == 'mapViewport'){ 
        let ori = viewport.view.position[moveAtAxis] 
        position[moveAtAxis] = ori //不改变这个值，尤其是mapViewer中的z
    }else{
        position[moveAtAxis] += boundSize[moveAtAxis]/2+expand//移动到bounding边缘外
    }
    
    viewport.view.position.copy(position)
    
    var width = Math.max(boundSize[axis[0]],  boundSize[axis[1]] * viewport.camera.aspect)//视口宽度（米）
    var margin = 50 //px
    viewport.camera.zoom = (viewport.resolution.x - margin) / width  
    viewport.camera.updateProjectionMatrix()
},
 */
 
SplitScreen4Views.focusOnPointCloud = function(pointcloud){//三个屏都聚焦在这个点云 
    var boundSize = pointcloud.bound.getSize(new THREE.Vector3);
    var center = pointcloud.bound.getCenter(new THREE.Vector3); 
    let target = pointcloud.panosBound && pointcloud.panosBound.center  //看向pano集中的地方，也就是真正有点云的地方。（因为需要展示所有点云，所以没办法用这个做为center）
    this.focusOnObject(pointcloud.bound, center,target)
    
    viewer.flyToDataset({pointcloud, dontMoveMap:true, duration:0})
}

SplitScreen4Views.focusOnObject = function(bound, center, target, duration=0){
    viewer.viewports.forEach(e=>{
        if(e.name == 'MainView'){
            /* let len = boundSize.length()
            let distance = THREE.Math.clamp(e.view.position.distanceTo(center),  len * 0.01,  len*0.3 ) //距离限制
            //viewer.focusOnObject({position:center}, 'point', duration, {distance, direction: e.view.direction,dontMoveMap:true} )//平移镜头
            //为了方便定位,直接飞到中心位置:
            e.view.setView({
                position:center,  duration,  target   
            }) */  
        }else{
            this.viewportFitBound(e, bound, center)
        }
    })
} 
    
 
export default SplitScreen4Views