feat: app视频封面图

罗广辉

4 days ago 1d552a3bad95caae4af15322df28e6240b797693

 packages/utils/map/DrawPolygon.js

@@ -2,6 +2,7 @@
import * as turf from '@turf/turf'
import { ElMessage } from 'element-plus'
import { flyVisual, getPointPositionsHeight } from './index'
import { MapTooltip } from './MapTooltip'

/**
 * 多边形绘制与编辑工具类
@@ -13,7 +14,10 @@
 *  - 外部订阅/通知机制
 */
export class DrawPolygon {
   constructor() {
   constructor(options = {}) {
      // 设备覆盖范围列表（经纬度 + 5000m半径）
      this.deviceList = options.deviceList || []
      this.coverageRadius = 5000
      // 图斑预览模式标记
      this.isPureSpotPreview = false
      // 是否删除测区
@@ -57,12 +61,17 @@
      this.handleLeftUp = this.handleLeftUp.bind(this)
      this.handleMouseMove = this.handleMouseMove.bind(this)
      this.handleLeftClick = this.handleLeftClick.bind(this)
      this.handleDoubleClick = this.handleDoubleClick.bind(this)
      this.handleRightClick = this.handleRightClick.bind(this)

      this.delPolygon = this.delPolygon.bind(this)
      this.delPoint = this.delPoint.bind(this)
      // 外部订阅者
      this.listeners = []
      // 绘制提示 tooltip
      this.drawingTooltip = null
      // 防止双击时第二次点击添加重复的点
      this._lastClickTime = 0
   }

   // 实体命名常量
@@ -123,6 +132,7 @@
   // 开始绘制
   startDrawing() {
      this.drawingMode = true
      this._lastClickTime = 0
      this.curPolygon = new Cesium.PolygonHierarchy()

      // 如果还没有 DataSource，就新建一个
@@ -395,6 +405,19 @@
   handleLeftUp() {
      if (!(this.editingMode && this.curPolygon?.positions && this.draggedEntity)) return

      // 检查松手位置是否在设备覆盖范围内
      if (this.isDragging && !this.isWithinDeviceCoverage(this.curPolygon.positions[this.draggedEntity?.customData.ind])) {
         ElMessage.warning('该位置不在设备覆盖范围内，请在设备5公里范围内绘制')
         // 回弹到拖拽前的位置
         this.draggedEntity.position = this.currentDragPointPosition
         this.curPolygon.positions[this.draggedEntity?.customData.ind] = this.currentDragPointPosition
         this.isDragging = false
         this.draggedEntity = null
         this.enableMapControl()
         this.rebuildMidPoints()
         return
      }

      if (this.currentDragPointIsValid && this.isDragging) {
         // 更新点位置
         this.draggedEntity.position = this.currentDragPointPosition
@@ -430,6 +453,11 @@

      const cartesian = this.viewer.scene.pickPosition(movement.endPosition)
      if (!cartesian) return

      // 更新绘制提示 tooltip 位置
      if (this.drawingMode && this.drawingTooltip) {
         this.drawingTooltip.move(movement.endPosition)
      }

      // 编辑模式下，拖拽点实时更新
      if (this.editingMode && this.draggedEntity?.customData) {
@@ -503,9 +531,22 @@
         return
      }

      // 防止双击时第二次点击添加重复的点（双击触发顺序：click → click → dblclick）
      const now = Date.now()
      if (this._lastClickTime && (now - this._lastClickTime) < 300) {
         return
      }
      this._lastClickTime = now

      // 添加新的点
      const cartesian = this.viewer.scene.pickPosition(click.position)
      if (!cartesian) return

      // 检查点击位置是否在设备覆盖范围内
      if (!this.isWithinDeviceCoverage(cartesian)) {
         ElMessage.warning('该位置不在设备覆盖范围内，请在设备5公里范围内绘制')
         return
      }

      let arr = [...this.curPolygon.positions]
      arr.pop()
@@ -516,6 +557,14 @@
      }

      this.addPosition(cartesian)
   }

   // 鼠标双击（完成绘制）
   handleDoubleClick() {
      if (!this.drawingMode) return
      // 双击时第一次 LEFT_CLICK 已经添加了一个点，所以至少需要 4 个点（3个有效点 + 1个跟踪点）
      if (this.curPolygon.positions.length < 4) return
      this.finishDrawing()
   }

   // 鼠标右键点击（弹出菜单）
@@ -579,6 +628,11 @@
   finishDrawing() {
      this.curPolygon.positions.pop()

      // 隐藏绘制提示
      if (this.drawingTooltip) {
         this.drawingTooltip.hide()
      }

      if (this.curPolygon.positions.length >= 3) {
         this.drawingMode = false
         this.editingMode = true
@@ -607,6 +661,11 @@
      this.removeMenuPopup()
      this.notify('getPolygonPositions', [])
      this.startDrawing()

      // 重新显示绘制提示
      if (this.drawingTooltip) {
         this.drawingTooltip.show('左键点击绘制，双击结束绘制')
      }
   }
   // 删除图斑
   delSpot() {
@@ -644,7 +703,7 @@

      const menuItems =
         type === 'polygon'
            ? [{ title: '删除测区', class: 'del-planar-polygon' }]
            ? [{ title: '删除范围', class: 'del-planar-polygon' }]
            : [{ title: '删除端点', class: 'del-planar-point' }]

      menuItems.forEach(item => {
@@ -708,6 +767,20 @@

      return intersections.features.length === 0
   }

   // 检查位置是否在任意设备的覆盖范围内（5km）
   isWithinDeviceCoverage(cartesian) {
      if (!this.deviceList || this.deviceList.length === 0) return true
      const cartographic = Cesium.Cartographic.fromCartesian(cartesian)
      const clickPoint = turf.point([Cesium.Math.toDegrees(cartographic.longitude), Cesium.Math.toDegrees(cartographic.latitude)])
      return this.deviceList
         .filter(item => item.latitude)
         .some(item => {
            const rangePoint = turf.point([item.longitude, item.latitude])
            const distance = turf.distance(rangePoint, clickPoint, { units: 'kilometers' })
            return distance <= 5
         })
   }
   // 初始化已有多边形
   async initPolygon(viewer, positions, isPurePreview = false) {
      this.initHandler(viewer)
@@ -760,6 +833,12 @@
      this.viewer = viewer
      this.startDrawing()

      // 初始化绘制提示 tooltip
      if (!this.drawingTooltip) {
         this.drawingTooltip = new MapTooltip(viewer)
         this.drawingTooltip.show('左键点击绘制，双击结束绘制')
      }

      if (!this.handler) {
         this.handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas)

@@ -769,6 +848,7 @@
            [Cesium.ScreenSpaceEventType.LEFT_UP, this.handleLeftUp],
            [Cesium.ScreenSpaceEventType.MOUSE_MOVE, this.handleMouseMove],
            [Cesium.ScreenSpaceEventType.LEFT_CLICK, this.handleLeftClick],
            [Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK, this.handleDoubleClick],
            [Cesium.ScreenSpaceEventType.RIGHT_CLICK, this.handleRightClick],
         ]

@@ -786,6 +866,7 @@
            Cesium.ScreenSpaceEventType.LEFT_UP,
            Cesium.ScreenSpaceEventType.MOUSE_MOVE,
            Cesium.ScreenSpaceEventType.LEFT_CLICK,
            Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK,
            Cesium.ScreenSpaceEventType.RIGHT_CLICK,
         ]

@@ -807,5 +888,11 @@
      this.removeEntities()
      this.removeHandler()
      this.enableMapControl()

      // 销毁绘制提示 tooltip
      if (this.drawingTooltip) {
         this.drawingTooltip.destroy()
         this.drawingTooltip = null
      }
   }
}