From a53ece5036c1fa61a63fe5f9e0cd3519210ab928 Mon Sep 17 00:00:00 2001
From: chenyao <1219716595@qq.com>
Date: Fri, 07 Aug 2026 09:44:27 +0800
Subject: [PATCH] feat:兼容分辨率低不出现滚动条
---
packages/utils/map/DrawPolygon.js | 61 +++++++++++++++++++++++++++++-
1 files changed, 59 insertions(+), 2 deletions(-)
diff --git a/packages/utils/map/DrawPolygon.js b/packages/utils/map/DrawPolygon.js
index 77ec1e6..f337484 100644
--- a/packages/utils/map/DrawPolygon.js
+++ b/packages/utils/map/DrawPolygon.js
@@ -14,7 +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
@@ -58,6 +61,7 @@
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)
@@ -66,6 +70,8 @@
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
@@ -126,6 +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
@@ -398,6 +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
@@ -511,9 +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()
@@ -524,6 +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）
@@ -662,7 +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 => {
@@ -725,6 +766,20 @@
const intersections = turf.kinks(poly)
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) {
@@ -793,6 +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],
]
@@ -810,6 +866,7 @@
Cesium.ScreenSpaceEventType.LEFT_UP,
Cesium.ScreenSpaceEventType.MOUSE_MOVE,
Cesium.ScreenSpaceEventType.LEFT_CLICK,
+ Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK,
Cesium.ScreenSpaceEventType.RIGHT_CLICK,
]
--
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