废话不多说，代码端上来
import 'ol/ol.css'
import Map from 'ol/Map'
import View from 'ol/View'
import VectorSource from 'ol/source/Vector'
import OSM from 'ol/source/OSM'
import VectorLayer from 'ol/layer/Vector'
import TileLayer from 'ol/layer/Tile'
import { GeoJSON } from 'ol/format'
import { Draw } from 'ol/interaction'
import Overlay from 'ol/Overlay'
// 线条几何形状。
import { LineString } from 'ol/geom'
import Feature from 'ol/Feature'
// 使用返回的键或
import { unByKey } from 'ol/Observable'
// 获取几何形状的球形长度和面积
import { getLength, getArea, offset } from 'ol/sphere'
import Style from 'ol/style/Style'
import Stroke from 'ol/style/Stroke'
import Fill from 'ol/style/Fill'
import Circle from 'ol/style/Circle'
import { ScaleLine, defaults as defaultControls } from 'ol/control'
import MousePosition from 'ol/control/MousePosition'
import { createStringXY } from 'ol/coordinate'
import Icon from 'ol/style/Icon'
import Text from 'ol/style/Text'
import { transform } from 'ol/proj'
import { fromLonLat } from 'ol/proj'
import Point from 'ol/geom/Point'
import ImageSource from 'ol/source/Image'
import { fromExtent } from 'ol/geom/Polygon'重头戏
export default
data() {
return {
map: null,
vectorLayer: null,
vectorSource: null,
draw: null,
select: null,
modify: null,
editorBtnText: '编辑',
overlay: null,
textarr: '全屏',
measureType: 'diatence',
tipDiv: null,
pointermoveEvent: null, // 地图pointermove事件
sketchFeature: null, // 绘制的要素
geometryListener: null, // 要素几何change事件
measureResult: '0', // 测量结果
pointLayer: null,
}
},mounted
var baseLayer = new TileLayer({
source: new OSM(),
})
this.vectorSource = new VectorSource({
wrapX: false,
})
this.vectorLayer = new VectorLayer({
source: this.vectorSource,
})
const scaleLineControl = new ScaleLine({
target: 'scalebar',
className: 'ol-scale-line',
})
const mousePositionControl = new MousePosition({
coordinateFormat: createStringXY(4),
projection: 'EPSG:4326',
className: 'custom-mouse-position',
target: document.getElementById('mouse-position'),
})
this.map = new Map({
layers: [baseLayer, this.vectorLayer],
controls: defaultControls({
zoom: false,
// rotate: false,
attribution: false,
}).extend([scaleLineControl, mousePositionControl]),
target: 'map',
view: new View({
projection: 'EPSG:4326',
center: [123.476492, 25.744676],
zoom: 8,
}),
})
this.map.addControl(scaleLineControl)方法定义
refresh() {
let that = this
that.reload()
},
pointPopup() {
var container = document.getElementById('popup')
var content = document.getElementById('popup-content')
var popupCloser = document.getElementById('popup-closer')
this.overlay = new Overlay({
element: container,
antoPan: true,
autoPanAnimation: {
duration: 250,
},
})
this.map.addOverlay(this.overlay)
let that = this
that.map.on('singleclick', function(evt) {
let coordinate = transform(evt.coordinate, 'EPSG:3857', 'EPSG:4326')
let coordinate2 = evt.coordinate
that.addPoints(coordinate)
content.innerHTML = `
你点击了这里:
坐标:
X:${coordinate2[0]} Y:${coordinate2[1]}`
that.overlay.setPosition(coordinate2) //把 overlay 显示到指定的 x,y坐标
})
popupCloser.onclick = function() {
that.overlay.setPosition(undefined)
popupCloser.blur()
return false
}
},
addPoints(coordinate) {
const feature = new Feature({
geometry: new Point(fromLonLat(coordinate)),
name: 'isbig',
})
const iconStyle = new Style({
image: new Icon({
anchor: [0.5, 0.5],
src: 'https://openlayers.org/en/v4.6.5/examples/data/icon.png',
}),
})
feature.setStyle(iconStyle)
const vectorSource = new VectorSource({})
this.pointLayer = new VectorLayer({
source: vectorSource,
})
this.map.addLayer(this.pointLayer)
this.vectorSource.addFeature(feature)
return iconStyle
},
drawFeature() {
this.draw = new Draw({
source: this.vectorSource,
// 用此实例绘制的几何形状类型。
type: 'Polygon',
})
this.map.addInteraction(this.draw)
// 绘制完成
this.draw.on('drawend', () => {
this.map.removeInteraction(this.draw)
this.draw = null
})
},
toHome() {
var to = [120.38, 36.07]
var view = this.map.getView()
view.setZoom(8),
view.animate({
center: to,
duration: 0,
})
},
// 输出矢量图层要素为GeoJson数据
outputJson() {
let features = this.vectorSource.getFeatures()
let jsonObj = new GeoJSON().writeFeatures(features)
console.log('->GeoJson格式数据：', jsonObj)
},
creatDraw(type) {
let maxPoints = null
if (this.measureType == 'angle') maxPoints = 3
else maxPoints = null
// 矢量图层源
let vectorSource = new VectorSource({
wrapX: false,
})
// 矢量图层
this.vectorLayer = new VectorLayer({
source: vectorSource,
style: new Style({
fill: new Fill({
color: 'rgba(252, 86, 49, 0.1)',
}),
stroke: new Stroke({
color: '#fc5531',
width: 3,
}),
image: new Circle({
radius: 0,
fill: new Fill({
color: '#fc5531',
}),
}),
}),
name: '测量图层',
})
this.map.addLayer(this.vectorLayer)
this.draw = new Draw({
source: vectorSource,
type: type,
maxPoints: maxPoints,
style: new Style({
fill: new Fill({
color: 'rgba(252, 86, 49, 0.1)',
}),
stroke: new Stroke({
color: '#fc5531',
lineDash: [10, 10],
width: 3,
}),
image: new Circle({
radius: 0,
fill: new Fill({
color: '#fc5531',
}),
}),
}),
// 绘制时点击处理事件
condition: (evt) => {
// 测距时添加点标注
if (
this.measureResult != '0' &&
!this.map.getOverlayById(this.measureResult) &&
this.measureType == 'distence'
)
this.creatMark(
null,
this.measureResult,
this.measureResult
).setPosition(evt.coordinate)
return true
},
})
this.map.addInteraction(this.draw)
/**
* 绘制开始事件
*/
this.draw.on('drawstart', (e) => {
this.sketchFeature = e.feature
let proj = this.map.getView().getProjection()
//******距离测量开始时*****//
if (this.measureType == 'distence') {
this.creatMark(null, '起点', 'start').setPosition(
this.map.getCoordinateFromPixel(e.target.downPx_)
)
this.tipDiv.innerHTML = '总长：0 m单击确定地点，双击结束'
this.geometryListener = this.sketchFeature
.getGeometry()
.on('change', (evt) => {
this.measureResult = this.distenceFormat(
getLength(evt.target, {
projection: 'EPSG:3857',
radius: 6378137,
})
)
this.tipDiv.innerHTML =
'总长：' + this.measureResult + '单击确定地点，双击结束'
})
}
//******面积测量开始时*****//
else if (this.measureType == 'area') {
this.tipDiv.innerHTML = '面积：0 m2继续单击确定地点'
this.geometryListener = this.sketchFeature
.getGeometry()
.on('change', (evt) => {
if (evt.target.getCoordinates()[0].length < 4)
this.tipDiv.innerHTML =
'面积：0m2继续单击确定地点'
else {
this.measureResult = this.formatArea(
getArea(evt.target, { projection: proj, radius: 6378137 })
)
this.tipDiv.innerHTML =
'面积：' + this.measureResult + '单击确定地点，双击结束'
}
})
}
//******角度测量开始时*****//
else if (this.measureType == 'angle') {
this.tipDiv.innerHTML = '继续单击确定顶点'
this.geometryListener = this.sketchFeature
.getGeometry()
.on('change', (evt) => {
if (evt.target.getCoordinates().length < 3)
this.tipDiv.innerHTML = '继续单击确定顶点'
else {
this.measureResult = this.formatAngle(evt.target)
this.tipDiv.innerHTML =
'角度：' + this.measureResult + '继续单击结束'
}
})
}
})
/**
* 绘制开始事件
*/
this.draw.on('drawend', (e) => {
let closeBtn = document.createElement('span')
closeBtn.innerHTML = '×'
closeBtn.title = '清除测量'
closeBtn.style =
'width: 10px;height:10px;line-height: 12px;text-align: center;border-radius: 5px;display: inline-block;padding: 2px;color: rgb(255, 68, 0);border: 2px solid rgb(255, 68, 0);background-color: rgb(255, 255, 255);font-weight: 600;position: absolute;top: -25px;right: -2px;cursor: pointer;'
closeBtn.addEventListener('click', () => {
this.clearMeasure()
})
//******距离测量结束时*****//
if (this.measureType == 'distence') {
this.creatMark(closeBtn, null, 'close1').setPosition(
e.feature.getGeometry().getLastCoordinate()
)
this.creatMark(
null,
'总长：' + this.measureResult + '',
'length'
).setPosition(e.feature.getGeometry().getLastCoordinate())
this.map.removeOverlay(this.map.getOverlayById(this.measureResult))
}
//******面积测量结束时*****//
else if (this.measureType == 'area') {
this.creatMark(closeBtn, null, 'close2').setPosition(
e.feature
.getGeometry()
.getInteriorPoint()
.getCoordinates()
)
this.creatMark(
null,
'总面积：' + this.measureResult + '',
'area'
).setPosition(
e.feature
.getGeometry()
.getInteriorPoint()
.getCoordinates()
)
}
//******角度测量结束时*****//
else if (this.measureType == 'angle') {
this.creatMark(closeBtn, null, 'close3').setPosition(
e.feature.getGeometry().getCoordinates()[1]
)
this.creatMark(
null,
'角度：' + this.measureResult + '',
'angle'
).setPosition(e.feature.getGeometry().getCoordinates()[1])
}
// 停止测量
this.stopMeasure()
})
},
measure(type) {
if (this.draw != null) return false // 防止在绘制过程再创建测量
this.measureType = type
if (this.vectorLayer != null) this.clearMeasure()
this.tipDiv = document.createElement('div')
this.tipDiv.innerHTML = '单击确定起点'
this.tipDiv.className = 'tipDiv'
this.tipDiv.style =
'width:auto;height:auto;padding:4px;border:1px solid #fc5531;font-size:12px;background-color:#fff;position:relative;top:60%;left:60%;font-weight:600;'
let overlay = new Overlay({
element: this.tipDiv,
autoPan: false,
positioning: 'bottom-center',
id: 'tipLay',
stopEvent: false, //停止事件传播到地图
})
this.map.addOverlay(overlay)
this.pointermoveEvent = this.map.on('pointermove', (evt) => {
overlay.setPosition(evt.coordinate)
})
if (this.measureType == 'distence' || this.measureType == 'angle') {
this.creatDraw('LineString')
} else if (this.measureType == 'area') {
this.creatDraw('Polygon')
}
},
creatMark(markDom, txt, idstr) {
if (markDom == null) {
markDom = document.createElement('div')
markDom.innerHTML = txt
markDom.style =
'width:auto;height:auto;padding:4px;border:1px solid #fc5531;font-size:12px;background-color:#fff;position:relative;top:60%;left:60%;font-weight:600;'
}
let overlay = new Overlay({
element: markDom,
autoPan: false,
positioning: 'bottom-center',
id: idstr,
stopEvent: false,
})
this.map.addOverlay(overlay)
return overlay
},
distenceFormat(length) {
let output
if (length > 100) {
output = Math.round((length / 1000) * 100) / 100 + ' ' + 'km' //换算成km单位
} else {
output = Math.round(length * 100) / 100 + ' ' + 'm' //m为单位
}
return output //返回线的长度
},
formatArea(area) {
let output
if (area > 10000) {
output =
Math.round((area / 1000000) * 100) / 100 + ' ' + 'km2' //换算成km单位
} else {
output = Math.round(area * 100) / 100 + ' ' + 'm2' //m为单位
}
return output //返回多边形的面积
},
formatAngle(line) {
var coordinates = line.getCoordinates()
var angle = '0°'
if (coordinates.length == 3) {
const disa = getLength(
new Feature({
geometry: new LineString([coordinates[0], coordinates[1]]),
}).getGeometry(),
{
radius: 6378137,
projection: this.map.getView().getProjection(),
}
)
const disb = getLength(
new Feature({
geometry: new LineString([coordinates[1], coordinates[2]]),
}).getGeometry(),
{
radius: 6378137,
projection: this.map.getView().getProjection(),
}
)
const disc = getLength(
new Feature({
geometry: new LineString([coordinates[0], coordinates[2]]),
}).getGeometry(),
{
radius: 6378137,
projection: this.map.getView().getProjection(),
}
)
var cos = (disa * disa + disb * disb - disc * disc) / (2 * disa * disb) // 计算cos值
angle = (Math.acos(cos) * 180) / Math.PI // 角度值
angle = angle.toFixed(2) // 结果保留两位小数
}
if (isNaN(angle)) return '0°'
else return angle + '°' // 返回角度
},
// 停止测量
stopMeasure() {
this.tipDiv = null
this.map.removeInteraction(this.draw)
this.draw = null
this.map.removeOverlay(this.map.getOverlayById('tipLay'))
},
//清除测量
clearMeasure() {
this.vectorLayer.getSource().clear()
this.map.getOverlays().clear()
//移除监听事件
unByKey(this.pointermoveEvent)
unByKey(this.geometryListener)
this.pointermoveEvent = null
this.geometryListener = null
this.measureResult = '0'
},
// 全屏
fullscreen() {
if (this.textarr == '全屏') {
this.textarr = '缩小'
let rfs =
this.$refs.map.requestFullScreen ||
this.$refs.map.webkitRequestFullScreen ||
this.$refs.map.mozRequestFullScreen ||
this.$refs.map.msRequestFullScreen
if (typeof rfs !== 'undefined' && rfs) {
rfs.call(this.$refs.map)
console.log('1全屏')
} else if (typeof window.ActiveXObject !== 'undefined') {
// for IE，这里其实就是模拟了按下键盘的F11，使浏览器全屏
// eslint-disable-next-line no-undef
let wscript = new ActiveXObject('WScript.Shell')
console.log(wscript)
if (wscript != null) {
wscript.SendKeys('{F11}')
console.log('3全屏')
}
console.log('2全屏')
}
} else {
// el.webkitExitFullscreen()
this.textarr = '全屏'
let cfs =
document.exitFullscreen ||
document.msExitFullscreen ||
document.mozCancelFullScreen ||
document.webkitCancelFullScreen
console.log(cfs, 'cfs')
if (typeof cfs !== 'undefined' && cfs) {
cfs.call(document)
console.log('4全屏')
} else if (typeof window.ActiveXObject !== 'undefined') {
// for IE，这里和fullScreen相同，模拟按下F11键退出全屏
// eslint-disable-next-line no-undef
let wscript = new ActiveXObject('WScript.Shell')
console.log('5全屏')
if (wscript != null) {
wscript.SendKeys('{F11}')
console.log('6全屏')
}
}
}
// this.map.addControl(new FullScreen())
},
// 清除
clear() {
this.vectorLayer.getSource().clear()
this.map.getOverlays().clear()
},
zoomIn() {
let view = this.map.getView()
let zoom = view.getZoom()
view.setZoom(zoom + 1)
},
zoomOut() {
let view = this.map.getView()
let zoom = view.getZoom()
view.setZoom(zoom - 1)
},
},css样式这玩意就不展示了，菜鸟一个，请多指教