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README
LGPL-3.0

唯杰地图示例工程代码

在线预览体验地址: https://vjmap.com/app/cloud

此工程代码基于唯杰地图二次开发的产品,末经许可,不可将代码应于商业用途(已购买唯杰地图私有化部署除外)。

运行

yarn 
yarn dev

目录说明

  • packages/core

    核心库

    主要是把vjmap用vue3进行了一定程度的封装

    此工程不能单独运行,主要是用于其他工程代码的共享用途

    如果要更新vjmap库,请进入此目录,运行

    yarn add vjmap
    
  • packages/map-manage

    唯杰地图云端图纸管理平台

    实现了对图纸的上传、打开、版本管理、属性查询、图层开关、批注、数据展示等功能。

vscode 开发时建议安装的插件

  • Volar

唯杰地图介绍

唯杰地图VJMAPCAD图或自定义地图格式WebGIS可视化显示开发提供的一站式解决方案,支持的格式如常用的AutoCADDWG格式文件、GeoJSON等常用GIS文件格式,它使用WebGL矢量图块自定义样式呈现交互式地图, 提供了全新的大数据可视化实时流数据可视化功能,通过本产品可快速实现浏览器和移动端上美观、流畅的地图呈现与空间分析,可帮助您在网站中构建功能丰富、交互性强、可定制的地图应用。

唯杰地图官网地址:https://vjmap.com/

唯杰地图特点

  • 完全兼容AutoCAD格式的DWG文件,无需转换
  • 绘图技术先进:采用WebGL技术,支持矢量地图渲染,支持栅格、图片、视频等图形渲染,支持3D模型渲染;
  • 个性化地图:服务端渲染和前端渲染都支持自定义样式表达式,灵活强大;
  • 多视角模式:支持2D、3D视角,支持垂直视角、360度旋转视角;
  • 视觉特性:支持无极缩放、支持粒子、航线等动画效果、支持飞行、平移等运动特效;
  • 功能完善:支持所有常见的地图功能,提供丰富的js接口;
  • 交互控制:支持鼠标/单指拖拽、上下左右按键进行地图平移,支持鼠标滚轮、双击、双指进行地图缩放,支持Shift+拉框放大;
  • 大数据可视化:性能卓越,支持大数据可视化展示
  • 可导出Autodesk Forge的f2d格式,利用Forge的生态圈进行开发,并可离线部署.示例
  • 跨平台支持(支持windows,linux); 支持docker部署;支持私有化部署;支持桌面端语言开发(如C#JavaC++语言)

唯杰地图快速入门

通过服务打开地图

通过Service对象的openMap方法可打开服务器上面已存在的地图,或者通过fileid传入http网络路径或服务器本地路径打开一幅DWG格式的CAD图形.

// 新建地图服务对象,传入服务地址和token
let svc = new vjmap.Service(env.serviceUrl, env.accessToken)
// 打开地图
let res = await svc.openMap({
    mapid: "sys_world", // 地图ID (上传图形时,取的图名称)
    mapopenway: vjmap.MapOpenWay.GeomRender, // 以几何数据渲染方式打开
    style: vjmap.openMapDarkStyle() // 服务器渲染样式
})
if (res.error) {
    message.error(res.error)
}

建立地图对象

获取上面打开地图返回的地理范围建立坐标系,然后创建地图对象

// 根据地图范围建立几何投影坐标系
let prj = new vjmap.GeoProjection(res.bounds);

// 地图对象
let map = new vjmap.Map({
    container: 'map', // DIV容器ID
    style: svc.vectorStyle(), // 样式,这里是矢量瓦片样式
    center: prj.toLngLat(prj.getMapExtent().center()), // 设置地图中心点
    zoom: 2, // 设置地图缩放级别
    pitch: 60, // 倾斜角度
    renderWorldCopies: false // 不显示多屏地图
});

// 关联服务对象和投影对象
map.attach(svc, prj);

地图交互

当鼠标在地图的某个实体上面时,需要高亮显示或者点击查看,在矢量瓦片模式下可调用 enableVectorLayerHoverHighlight;在栅格瓦片下,可调用 enableLayerClickHighlight

// 获取所有图层
const layers = svc.getMapLayers();
// 实体类型ID和名称映射
const { entTypeIdMap } = await svc.getConstData();

// 有高亮状态(鼠标在地图元素上时,会高亮)
map.enableVectorLayerHoverHighlight((event, feature, layer) => {
    // 点击高亮实体回调事件
    const prop = feature.properties;
    let content = `event: ${event}; feature: ${feature.id}; layer: ${layers[prop.layer].name}; type: ${entTypeIdMap[prop.type]}`
    message.info({ content, key: "info", duration: 5});
})

增加覆盖物或其它图层

地图提供了在地图之上绘制覆盖物的能力,比如点标记、纯文本标记、折线、圆、多边形、矩形等图形,在绘制中可以对点标记进行标题、图标等进行设置,对折线可以进行颜色、宽度等属性进行设置,对于面(圆、多边形、矩形)同样可以进行填充色、边框色、宽度等很多自定义属性进行设置。

增加一个marker覆盖物

const mapBounds = map.getGeoBounds(0.6); // 获取地图地理范围,并进行比例缩放
let position = mapBounds.randomPoint(); // 在此地理范围内生成一个随机点坐标
let latLng = map.toLngLat(position); // 地理坐标转经纬度
let marker = new vjmap.Marker(); // 新建一个Marker
marker.setLngLat(latLng).addTo(map); // 设置坐标并加入地图

创建很多正方形拉伸图层

let lengthMin = mapBounds.width() / 200; // 随机生成正方形边长的最小长度
let lengthMax = mapBounds.width() / 100; // 随机生成正方形边长的最大长度
let geoDatas = []; // 数据
for(let i = 0; i < 100; i++) {
    const pts = [];
    const len = vjmap.randInt(lengthMin, lengthMax); // 在两个范围内随机生成一个长度
    const p1 = mapBounds.randomPoint(); // 在此范围内随机生成一个点,做为正方形的右下角的点
    const p2 = vjmap.geoPoint([p1.x, p1.y + len]);
    const p3 = vjmap.geoPoint([p1.x + len, p1.y + len]);
    const p4 = vjmap.geoPoint([p1.x + len, p1.y]);
    pts.push(p1, p2, p3, p4); // 正方形的四个点坐标
    geoDatas.push({
        points: map.toLngLat(pts), // 需要把地理坐标转化成经纬度去绘制
        properties: {
            name: "square" + (i + 1),
            color:  vjmap.randomColor(),
            type: "square",
            baseHeight: 0,
            height: prj.toMeter(vjmap.randInt(lengthMin * 10, lengthMax * 10)) // 高度,这里根据上面设置的最小和最大长度的十倍随机生成一个高度值
        }
    })
}

// 创建拉伸对象图层
let fillExtrusions = new vjmap.FillExtrusion({
    data: geoDatas, // 数据
    // 如果是hover状态时,用红色,非hover状态时,取属性中的'color'做为颜色值
    fillExtrusionColor: ['case', ['to-boolean', ['feature-state', 'hover']], 'red', ['get', 'color']],
    fillExtrusionOpacity: 0.8, // 透明度
    fillExtrusionHeight:['get', 'height'], // 高度值
    fillExtrusionBase: ['get', 'baseHeight'], // 基点高度,如需悬空,可改变此值
    isHoverPointer: true, // 鼠标在上面时会改变鼠标形状
    isHoverFeatureState: true // 鼠标在上面时会改变状态值,从而有高亮效果
});
fillExtrusions.addTo(map); // 增加至地图
// 点击事件
fillExtrusions.clickLayer(e => message.info(`您点击了第 ${e.features[0].id} 个,名称为 ${e.features[0].properties.name},颜色为 ${e.features[0].properties.color}${e.features[0].properties.type}`))
// 悬浮事件
fillExtrusions.hoverPopup(f => `<h3>ID: ${f.properties.name}</h3>Color: ${f.properties.color}`, { anchor: 'bottom' });

效果如下:

image-20211015195337555

demo地址 可访问 https://vjmap.com/demo/#/demo/map/overlay/fillextrusion/fillextrusion

唯杰地图文档 https://vjmap.com

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简介

`唯杰地图VJMAP`为`CAD`图或`自定义地图格式`WebGIS`可视化`显示开发提供的一站式解决方案,支持的格式如常用的`AutoCAD`的`DWG`格式文件、`GeoJSON`等常用`GIS`文件格式,它使用WebGL`矢量图块`和`自定义样式`呈现交互式地图, 提供了全新的`大数据可视化`, 此案例实现了对CAD图纸的上传、打开、版本管理、属性查询、图层开关、批注、数据展示等功能。 展开 收起
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