/*
 * @Author: shuishen 1109946754@qq.com
 * @Date: 2022-10-18 17:17:50
 * @LastEditors: shuishen 1109946754@qq.com
 * @LastEditTime: 2022-11-18 09:22:49
 * @FilePath: \srs-police-affairs\src\utils\EntityDraw.js
 * @Description: 
 * 
 * Copyright (c) 2022 by shuishen 1109946754@qq.com, All Rights Reserved. 
 */

// 1m的经度
const lngOneM = 0.00001141
// 1m的纬度
const latOneM = 0.00000899

export default class EntityDraw {

    drawPolygonLayer = null
    drawPolylineLayer = null

    drawPolyLineGonLayer = null

    drawPointLayer = null

    activeShapePoints = []

    activeShape = null

    drawCompletePosition = []

    type = ''

    emitPointLayer = null

    eventHandler = null

    EditMoveCenterEntity = null

    Cesium = null

    EditMoveCenterPositoin = null

    isEditing = false

    editVertext = null

    lastEventData = null

    cb = () => { }

    constructor() {
        // 去除双击
        this.deactivate()

        // 初始化图层
        this.initLayer()

        // 修改this指向
        this.getLeftEvent = this.getLeftEvent.bind(this)
        this.getMoveEvent = this.getMoveEvent.bind(this)
        this.getRightEvent = this.getRightEvent.bind(this)

        this.resizePolyLineGon = this.resizePolyLineGon.bind(this)

        this.Cesium = global.DC.Namespace.Cesium

        this.eventHandler = new global.DC.Namespace.Cesium.ScreenSpaceEventHandler(global.viewer.scene.canvas)
    }

    initLayer () {
        // 添加面图层
        this.drawPolygonLayer = new global.DC.VectorLayer('drawPolygonLayer')
        global.viewer.addLayer(this.drawPolygonLayer)

        // 添加线图层
        this.drawPolylineLayer = new global.DC.VectorLayer('drawPolylineLayer')
        global.viewer.addLayer(this.drawPolylineLayer)
        this.drawPolyLineGonLayer = new global.DC.VectorLayer('drawPolyLineGonLayer')
        global.viewer.addLayer(this.drawPolyLineGonLayer)

        // 添加点图层
        this.drawPointLayer = new global.DC.VectorLayer('drawPointLayer')
        global.viewer.addLayer(this.drawPointLayer)

        // 添加编辑点图层
        this.emitPointLayer = new global.DC.VectorLayer('emitPointLayer')
        global.viewer.addLayer(this.emitPointLayer)


        // global.viewer.scene.globe.depthTestAgainstTerrain = true
    }

    // draw执行这个
    activate (type, cb) {
        this.cb = cb
        this.type = type

        this.drawCompletePosition = []

        this.clearLayer()

        if (this.activeShapePoints.length > 0) {
            this.clickInTheProcess()
        }

        this.registerEvents()


        // this.initLeftDownEventHandler()
        // this.initLeftUpEventHandler()
        // this.initMouseMoveEventHandler()
    }

    deactivate () {
        global.viewer.on(global.DC.MouseEventType.DB_CLICK, e => {
            return
        })
    }

    // 注册
    registerEvents () {
        global.viewer.tooltip.enable = true

        // 这个是左键单击也就是添加点
        global.viewer.on(global.DC.MouseEventType.CLICK, this.getLeftEvent)

        // 这个是鼠标移动
        global.viewer.on(global.DC.MouseEventType.MOUSE_MOVE, this.getMoveEvent)

        // 这个是鼠标右键得，就是最后绘制结束 你要控制嘛 我调下
        global.viewer.on(global.DC.MouseEventType.RIGHT_CLICK, this.getRightEvent)
    }

    // 解绑
    unRegisterEvents () {
        global.viewer.tooltip.enable = false
        global.viewer.off(global.DC.MouseEventType.CLICK, this.getLeftEvent)
        global.viewer.off(global.DC.MouseEventType.MOUSE_MOVE, this.getMoveEvent)
        global.viewer.off(global.DC.MouseEventType.RIGHT_CLICK, this.getRightEvent)
    }

    // 绘制多边形
    drawGraph (positionData) {
        let graph

        if (this.type === "polyline") {
            graph = global.viewer.entities.add({
                polyline: {
                    material: new global.DC.Namespace.Cesium.ColorMaterialProperty(
                        global.DC.Namespace.Cesium.Color.NAVAJOWHITE.withAlpha(0.7)
                    ),
                    positions: positionData,
                    clampToGround: true,
                    width: 3,
                },
            })
        } else {
            graph = global.viewer.entities.add({
                polygon: {
                    hierarchy: positionData,
                    material: new global.DC.Namespace.Cesium.ColorMaterialProperty(
                        global.DC.Namespace.Cesium.Color.NAVAJOWHITE.withAlpha(0.7)
                    ),
                }
            })
        }

        return graph
    }

    // 左键
    getLeftEvent (event) {
        this.leftEvent(event)
    }

    leftEvent (event) {
        const that = this

        let point = new global.DC.Point(new global.DC.Position(event.wgs84SurfacePosition.lng, event.wgs84SurfacePosition.lat))

        point.setStyle({
            pixelSize: 10,
            color: global.DC.Color.RED, //颜色
            outlineColor: global.DC.Color.WHITE, //边框颜色
            outlineWidth: 2, //边框大小，
        })

        that.drawPointLayer.addOverlay(point)

        if (that.activeShapePoints.length === 0) {
            that.activeShapePoints.push(event.surfacePosition)

            const dynamicPositions = new global.DC.Namespace.Cesium.CallbackProperty(function () {

                if (that.type === "polyline") {
                    return that.activeShapePoints
                } else {
                    return new global.DC.Namespace.Cesium.PolygonHierarchy(that.activeShapePoints)
                }

            }, false)

            that.activeShape = that.drawGraph(dynamicPositions)

        }

        that.activeShapePoints.push(event.surfacePosition)
    }

    // 移动
    getMoveEvent (event) {
        this.moveEvent(event)
    }

    moveEvent (event) {
        global.viewer.tooltip.showAt(event.windowPosition, '左击选择点位，右击结束')

        if (this.activeShapePoints.length >= 2) {
            this.activeShapePoints.pop()

            this.activeShapePoints.push(event.surfacePosition)
        }
    }

    // 右键
    getRightEvent (event) {
        this.rightEvent(event)
    }

    rightEvent (event) {
        if (this.type === "polyline") {
            if (this.activeShapePoints.length < 2) {
                global.viewer.tooltip.showAt(event.windowPosition, '不能绘制成线，请继续添加点')
                return
            }
        } else {
            if (this.activeShapePoints.length < 3) {
                global.viewer.tooltip.showAt(event.windowPosition, '不能绘制成面，请继续添加点')
                return
            }
        }

        this.terminateShape()
    }

    terminateShape () {
        this.activeShapePoints.pop()

        this.activeShapePoints.forEach(item => {

            let pointPosition = global.DC.Transform.transformCartesianToWGS84(item)

            this.drawCompletePosition.push({ lng: pointPosition.lng, lat: pointPosition.lat })

        })

        if (this.type === "polyline") {

            let polyline = new global.DC.Polyline(this.drawCompletePosition)

            polyline.setStyle({
                material: new global.DC.Namespace.Cesium.ColorMaterialProperty(
                    global.DC.Namespace.Cesium.Color.NAVAJOWHITE.withAlpha(0.7)
                )
            })

            this.drawPolylineLayer.addOverlay(polyline)

            this.addPolyLineGon(100, this.cb)

            // this.EditMoveCenterPositoin = this.Cesium.Cartesian3.fromDegrees(this.drawCompletePosition[this.drawCompletePosition.length - 1].lng + 200 * lngOneM, this.drawCompletePosition[this.drawCompletePosition.length - 1].lat + 200 * latOneM, 0)



            // this.createEditMoveCenterEntity()
        } else {
            let polygon = new global.DC.Polygon(this.drawCompletePosition)

            polygon.setStyle({
                material: new global.DC.Namespace.Cesium.ColorMaterialProperty(
                    global.DC.Namespace.Cesium.Color.NAVAJOWHITE.withAlpha(0.7)
                )
            })


            // console.log(polygon, 999)

            this.drawPolygonLayer.addOverlay(polygon)

            this.lastEventData = {
                type: 'polygon',
                data: this.drawCompletePosition
            }

            this.cb(this.lastEventData)
        }

        this.clickInTheProcess()
    }

    clickInTheProcess () {
        if (this.activeShape != null) {
            global.viewer.entities.remove(this.activeShape)
        }

        this.drawPointLayer.clear()

        this.activeShape = null

        this.activeShapePoints = []

        this.unRegisterEvents()
    }

    // 清除
    clearLayer () {
        this.drawPolygonLayer.clear()
        this.drawPolylineLayer.clear()
        this.drawPolyLineGonLayer.clear()

        this.removeViewerEvent()

        global.viewer.entities.removeAll()
    }

    // 销毁
    destroy () {
        this.unRegisterEvents()
        this.removeViewerEvent()

        this.drawPolygonLayer.clear()
        this.drawPolygonLayer.remove()

        this.drawPolylineLayer.clear()
        this.drawPolylineLayer.remove()

        this.drawPolyLineGonLayer.clear()
        this.drawPolyLineGonLayer.remove()

        this.drawPointLayer.clear()
        this.drawPointLayer.remove()

        global.viewer.entities.removeAll()

        this.activeShape = null
        this.activeShapePoints = []
        this.drawCompletePosition = []
    }

    resizePolyLineGon (num) {
        this.addPolyLineGon(num)
    }

    addPolyLineGon (num, cb) {
        this.drawPolyLineGonLayer.clear()

        let coords = global.DC.GeoTools.polylineBuffer(this.drawCompletePosition, num)

        let polygon = new global.DC.Polygon(coords)

        polygon.setStyle({
            material: global.DC.Color.RED.withAlpha(0.4)
        })

        this.drawPolyLineGonLayer.addOverlay(polygon)

        this.lastEventData = {
            type: 'line',
            data: coords,
            lineData: this.drawCompletePosition
        }

        cb(this.lastEventData)
    }

    //场景鼠标左键按下事件
    initLeftDownEventHandler () {
        const that = this
        that.eventHandler.setInputAction((e) => {
            let id = global.viewer.scene.pick(e.position)
            // 拾取到对象 判断拾取到的对象类型 
            if (!id || !id.id || !id.id.type) return
            //拾取到具有type 属性的entity对象  
            if (id.id.type == "EditVertex" || id.id.type == "EditMove") {
                that.isEditing = true
                //禁用场景的旋转移动功能 保留缩放功能
                global.viewer.scene.screenSpaceCameraController.enableRotate = false
                //改变鼠标状态
                global.viewer.enableCursorStyle = false
                document.body.style.cursor = "move"
                that.editVertext = id.id
            }

        }, that.Cesium.ScreenSpaceEventType.LEFT_DOWN)
    }

    //场景鼠标左键抬起事件
    initLeftUpEventHandler () {
        const that = this
        that.eventHandler.setInputAction(((e) => {
            if (!that.isEditing) return
            that.isEditing = false
            global.viewer.scene.screenSpaceCameraController.enableRotate = true
            global.viewer.enableCursorStyle = true
            document.body.style.cursor = "default"
        }), that.Cesium.ScreenSpaceEventType.LEFT_UP)
    }

    getScope (position) {
        let Scope = Math.abs(position.lng - this.drawCompletePosition[this.drawCompletePosition.length - 1].lng) / lngOneM - 200

        return Scope > 100 ? Scope : 100
    }

    //场景鼠标移动事件
    initMouseMoveEventHandler () {
        const that = this
        that.eventHandler.setInputAction(((e) => {
            // 鼠标移动的位置
            let pickPosition = global.viewer.scene.pickPosition(e.endPosition)
            if (!pickPosition) return
            if (!that.isEditing) return

            if (that.editVertext.type == "EditMove") {

                let startPosition = that.EditMoveCenterPositoin

                if (!startPosition) return

                let position = global.DC.Transform.transformCartesianToWGS84(pickPosition)

                that.addPolyLineGon(that.getScope(position))
            }

            that.isEdited = true

            that.EditMoveCenterPositoin = pickPosition
        }), that.Cesium.ScreenSpaceEventType.MOUSE_MOVE)
    }

    removeViewerEvent () {
        if (this.eventHandler && this.eventHandler != null) {
            this.eventHandler.removeInputAction(this.Cesium.ScreenSpaceEventType.LEFT_DOWN)
            this.eventHandler.removeInputAction(this.Cesium.ScreenSpaceEventType.LEFT_UP)
            this.eventHandler.removeInputAction(this.Cesium.ScreenSpaceEventType.MOUSE_MOVE)
        }
    }

    createEditMoveCenterEntity () {
        const that = this
        that.EditMoveCenterEntity = global.viewer.entities.add({
            position: new that.Cesium.CallbackProperty(e => {
                return that.EditMoveCenterPositoin
            }, false),

            type: "EditMove",

            point: {
                color: that.Cesium.Color.RED.withAlpha(0.8),
                pixelSize: 12,
                outlineColor: that.Cesium.Color.WHITE.withAlpha(0.6),
                outlineWidth: 4,
                disableDepthTestDistance: 2000,
                heightReference: that.Cesium.HeightReference.CLAMP_TO_GROUND
            },
        })
    }
}