/**
* 在地图上添加标记点
* point: [lng, lat]
* color: '#83f7a0'
*/
addMarkerOnMap(point, color = '#83f7a0') {
const marker = new mapboxgl.Marker({
draggable: false,
color: color,
}).setLngLat(point).addTo(this.map);
this.markersList.push(marker);
},
/**
* 在地图上添加气泡展示
* point: [lng, lat]
*/
addPopupOnMap(point) {
// 将所选点设置为地图中心
this.map.setCenter(point);
// Zoom to the zoom level 8 with an animated transition
this.map.zoomTo(16, {
duration: 2000
});
// 自行赋值
const html = `
- 事件名称:${eventName}
- 经度:${longitude}
- 纬度:${latitude}
`
const popup = new mapboxgl.Popup({ closeOnClick: false }).setLngLat(point).setHTML(html).addTo(this.map);
// this.popup = popup
Popup = popup
},
实现效果
我的写法估计是有点问题,每条小线段都增加了一个资源和图层,但是还是实现了此功能
map.addSource(`route${routesI}`, {
type: 'geojson',
data: {
type: 'Feature',
properties: {},
geometry: {
type: 'LineString',
coordinates: routesNew,
},
},
});
map.addLayer({
id: `route${routesI}`,
type: 'line',
source: `route${routesI}`,
layout: {
'line-join': 'round',
'line-cap': 'round',
},
paint: {
'line-color': '#24C1FF',
'line-width': 10,
},
});
参考地址:https://blog.csdn.net/qq_33950912/article/details/127428093
思路:画圆,其实就是连接n个近似于圆的点位。
经过验证,上述文章中选取了方法三,自定义去切割圆。方法一未曾实现。方法二可能有问题,没有尝试。
/**
* 计算以中心点、半径 缓冲区
* center: [lng, lat]
* radiusInKm
*/
createGeoJSONCircle(center, radiusInM, points = 64) {
var coords = {
latitude: center[1],
longitude: center[0]
};
var miles = radiusInM;
var ret = [];
var distanceX = miles/1000/(111.320*Math.cos(coords.latitude*Math.PI/180));
var distanceY = miles/1000/110.574;
var theta, x, y;
for(var i=0; i<points; i++) {
theta = (i/points)*(2*Math.PI);
x = distanceX*Math.cos(theta);
y = distanceY*Math.sin(theta);
ret.push([coords.longitude+x, coords.latitude+y]);
}
ret.push(ret[0]);
return {
"type": "geojson",
"data": {
"type": "FeatureCollection",
"features": [{
"type": "Feature",
"geometry": {
"type": "Polygon",
"coordinates": [ret]
}
}]
}
};
},
/**
调用 - 请自行赋值
*/
map.addSource("polygon", createGeoJSONCircle([-93.6248586, 41.58527859], 0.5));
map.addLayer({
"id": "polygon",
"type": "fill",
"source": "polygon",
"layout": {},
"paint": {
"fill-color": "blue",
"fill-opacity": 0.6
}
});
实现效果
添加卡车图片资源:
/**
* 引入图片
* img obj : src, name
*/
addImage = function(img) {
map.loadImage(img.src, (error, image) => {
if (error) throw error;
if (!map.hasImage(img.name)) map.addImage(img.name, image, {
sdf: img.sdf || false
});
})
}
// 加载 truck
let truck_img = {
src: 'img/truck_mapboxgl.png',
name: 'truck_img'
}
addImage(truck_img)
实现效果:同上图
/**
* 添加坐标点及鼠标以上效果
*/
addPoints = function (featuresList) {
map.addSource('places', {
'type': 'geojson',
'data': {
'type': 'FeatureCollection',
'features': featuresList
}
})
// 加载 circle 定位圆
let img = {
src: 'img/circle.png',
name: 'circle_img',
sdf: true
}
addImage(img)
map.addLayer({
'id': 'places',
'type': 'symbol',
'source': 'places',
'layout': {
'icon-image': img.name, // 图标ID
'icon-size': 0.15, // 图标的大小
'icon-anchor': 'center', // 图标的位置
'text-field': ['get', 'num'],
},
'paint': {
'text-color': '#fff',
'icon-color': ['get', 'color']
},
});
// Create a popup, but don't add it to the map yet.
const popup = new mapboxgl.Popup({
closeButton: false,
closeOnClick: false
});
map.on('mouseenter', 'places', (e) => {
// Change the cursor style as a UI indicator.
map.getCanvas().style.cursor = 'pointer';
// Copy coordinates array.
const coordinates = e.features[0].geometry.coordinates.slice();
const description = e.features[0].properties.description;
// Ensure that if the map is zoomed out such that multiple
// copies of the feature are visible, the popup appears
// over the copy being pointed to.
while (Math.abs(e.lngLat.lng - coordinates[0]) > 180) {
coordinates[0] += e.lngLat.lng > coordinates[0] ? 360 : -360;
}
// Populate the popup and set its coordinates
// based on the feature found.
popup.setLngLat(coordinates).setHTML(description).addTo(map);
});
map.on('mouseleave', 'places', () => {
map.getCanvas().style.cursor = '';
popup.remove();
});
}
实现效果:如上图
此方法用于卡车图标动态移动
/**
* 添加路径 - 卡车图标动态效果
*/
addTruckRoutes = function (coordinatesList) {
// 起点
const origin = coordinatesList[0]
const route = {
'type': 'FeatureCollection',
'features': [{
'type': 'Feature',
'geometry': {
'type': 'LineString',
'coordinates': coordinatesList
}
}]
};
const point = {
'type': 'FeatureCollection',
'features': [{
'type': 'Feature',
'properties': {},
'geometry': {
'type': 'Point',
'coordinates': origin
}
}]
}
const lineDistance = turf.length(route.features[0]);
const arc = [];
const steps = 200;
for (let i = 0; i < lineDistance; i += lineDistance / steps) {
const segment = turf.along(route.features[0], i);
arc.push(segment.geometry.coordinates);
}
route.features[0].geometry.coordinates = arc;
let counter = 0;
map.addSource('route', {
'type': 'geojson',
'data': route
});
map.addSource('point', {
'type': 'geojson',
'data': point
});
map.addLayer({
'id': `route`,
'source': 'route',
'type': 'line',
'paint': {
'line-width': 20,
'line-color': '#2d8cf0',
'line-opacity': 0.4
}
})
// 加载 truck 定位圆
let truck_img = {
src: 'img/truck_mapboxgl.png',
name: 'truck_img'
}
addImage(truck_img)
map.addLayer({
'id': `point`,
'source': 'point',
'type': 'symbol',
'layout': {
'icon-image': truck_img.name,
'icon-size': 0.2,
'icon-rotate': ['get', 'bearing'],
'icon-rotation-alignment': 'map',
'icon-allow-overlap': true,
'icon-ignore-placement': true
}
});
animate = function () {
running = true;
const start =
route.features[0].geometry.coordinates[
counter >= steps ? counter - 1 : counter
];
const end =
route.features[0].geometry.coordinates[
counter >= steps ? counter : counter + 1
];
point.features[0].geometry.coordinates =
route.features[0].geometry.coordinates[counter];
point.features[0].properties.bearing = turf.bearing(
turf.point(start),
turf.point(end)
)+90; // 此处控制图标的头部指向问题,可以加减角度,使卡车头部一直朝着目的地
// Update the source with this new data
map.getSource('point').setData(point);
// Request the next frame of animation as long as the end has not been reached
if (counter < steps) {
requestAnimationFrame(animate);
counter = counter + 1;
} else {
counter = 0
animate()
}
}
animate(counter);
}
代码如下:
/**
* 添加路径 - 路径虚线变化效果
*/
addDashedRoutes = function (coordinatesList) {
map.addSource('route', {
'type': 'geojson',
'data': {
'type': 'Feature',
'properties': {},
'geometry': {
'type': 'LineString',
'coordinates': coordinatesList
}
}
});
map.addLayer({
'id': 'route',
'type': 'line',
'source': 'route',
'layout': {
'line-join': 'round',
'line-cap': 'round'
},
'paint': {
// 'line-color': '#2b85e4',
// 'line-width': 10
'line-color': '#2d8cf0',
'line-width': 8,
'line-opacity': 0.4
}
});
map.addLayer({
id: 'line-dashed',
type: 'line',
source: 'route',
paint: {
'line-color': '#2db7f5',
'line-width': 8,
'line-dasharray': [0, 4, 3]
}
});
/**
* 动态展示路径 - 路径虚线变化效果
*/
const dashArraySequence = [
[0, 4, 3],
[0.5, 4, 2.5],
[1, 4, 2],
[1.5, 4, 1.5],
[2, 4, 1],
[2.5, 4, 0.5],
[3, 4, 0],
[0, 0.5, 3, 3.5],
[0, 1, 3, 3],
[0, 1.5, 3, 2.5],
[0, 2, 3, 2],
[0, 2.5, 3, 1.5],
[0, 3, 3, 1],
[0, 3.5, 3, 0.5]
];
let step = 0;
animateDashArray = function (timestamp) {
const newStep = parseInt(
(timestamp / 50) % dashArraySequence.length
);
if (newStep !== step) {
map.setPaintProperty(
'line-dashed',
'line-dasharray',
dashArraySequence[step]
);
step = newStep;
}
// Request the next frame of the animation.
requestAnimationFrame(animateDashArray);
}
// start the animation
animateDashArray(0);
}
官网有示例,可自行查阅
/**
* 正向地址匹配
* address: '孵化大厦'
*/
addressMatchPoint(address) {
// 正向匹配参数
var geoCodeParam = new SuperMap.GeoCodingParameter({
address: address, // 地址
fromIndex:0, // 设置返回对象的起始索引值
toIndex:10, // 设置返回对象的结束索引值。
// prjCoordSys:{epsgcode26}, // 坐标设置
maxReturn:5 // 最大返回结果数
});
//创建地址匹配服务
var addressUrl = MAP_SERVICE + "***************"
var addressMatchService = new mapboxgl.supermap.AddressMatchService(addressUrl);
// 向服务端发送请求进行正向地址匹配,并获取返回的结果
return addressMatchService.code(geoCodeParam, function(obj){});
},
/**
* 反向地址匹配
* point: [lng, lat]
*/
pointMatchAddress(point) {
// 反向匹配参数
var geoDecodeParam = new SuperMap.GeoDecodingParameter({
x: point[0], // 横坐标
y: point[1], // 纵坐标
fromIndex: 0, // 设置返回对象的起始索引值。
toIndex: 10, // 设置返回对象的结束索引值。
// filters: "", // 过滤字段
// prjCoordSys: {epsgcode26}, // 坐标设置
maxReturn: 3, // 最大结果数
geoDecodingRadius: -1 // 查询半径
});
// 创建地址匹配服务
var addressUrl = MAP_SERVICE + "***************"
var addressMatchService = new mapboxgl.supermap.AddressMatchService(addressUrl);
// 向服务端发送请求进行反向地址匹配,并获取返回的结果
return addressMatchService.decode(geoDecodeParam, function(obj){});
},
参照官网示例
let serviceUrl = MAP_SERVICE + '******';
let findPathService = new mapboxgl.supermap.NetworkAnalystService(serviceUrl);
//向服务器发送请求,并对返回的结果进行分析处理,展示在客户端上
const result = findPathService.findPath(findPathParams, function(serviceResult) {})
// ...不完整代码