# 接口概览

# 接口一览表

GVOL 功能及接口一览表

# GvolEngine | 地理引擎主类

  • 引擎初始化

    let engine = new GVOL.GvolEngine('GvolContainer', {
    baseLayerPicker: false,
    imageryProvider: new Cesium.UrlTemplateImageryProvider({
    url: `` //地图服务地址
    })
},null)

  • get plotLayer()： 获取标绘图层（以后弃用，图层统一到了graphicLayer中）

    let engine = new GVOL.GvolEngine('GvolContainer');
let layer = engine.plotLayer();

  • get graphicLayer()： 获取图形图层

    let engine = new GVOL.GvolEngine('GvolContainer');
let layer = engine.graphicLayer();

  • get tileLayer()： 获取切片图层

    let engine = new GVOL.GvolEngine('GvolContainer');
let layer = engine.tileLayer();

  • get serviceManager()： 获取服务管理类

    let engine = new GVOL.GvolEngine('GvolContainer');
let servic = engine.serviceManager();

  • get plot()： 获取标绘行为类

    let engine = new GVOL.GvolEngine('GvolContainer');
let plot = engine.plot;

# Basic | 基础对象类

  • Item：基于Graphic接口绘制的对象基类
  • Graph：基于Graph接口标绘的对象基类
  • GvolPoint：经纬度对象
  • GvolPoint：经纬度对象，提供了经纬度坐标转换

# Layer | 图层基类

  • add (item: Item)
  • remove (itemid: string)
  • getItemById (itemid: string)
  • getItemByName (itemName: string)
  • getItemList ()

# PlottingBehavior | 标绘行为类

  • createPlot(params,firstCategory?,secondCategory?,thirdCategory?)：创建手动标绘对象

    (1)手动创建，根据自带plot_data配置文件类型进行创建

    let engine = new GVOL.GvolEngine('GvolContainer');
let plot = engine.plot.createPlot({},'基本元素','点', '图标点');;

    (2)手动创建，根据json格式参数属性创建

    let engine = new GVOL.GvolEngine('GvolContainer');
engine.plot.createPlot({
            gvolType:'Ellipsoid',
            properties: {
                color: "#E3C42E"
            },
            label: '椭球', //名称为必填项
            tooltip: "绘制一个椭球",
            path: "", 
            kind: "", //特殊类型标识，如果是常规类型可以为空
            icon: "", //二维图标，用户应用层展示
          });

# PlotLayer | 标绘层，基于Graph接口绘制的对象所在层

  • add (name,type,plotArr)： 方法：参数绘制，添加1个继承自Graph的实例

    接口绘制，根据json格式参数进行绘制 例如：创建1个多边形

    let engine = new GVOL.GvolEngine('GvolContainer');
let ploygons = [{
        gvolType:'Polygon',
        properties: {
            color: '#FF0000', //颜色
            outline: true,
            outlineColor: '#097EFF',
            outlineAlpha:1,
            outlineWidth:10
            },
        geometry:{
            coordinates: [
                [120.936359678812, 23.999675109851122], 
                [120.93632040554628, 23.995161759770777],
                [120.94483739420863, 23.995578578928907],
                [120.94117521173945, 23.99976373725287],
                [120.93941845273494, 24.000902217875538]]
        }
    }]
let result = engine.graphicLayer.add(ploygons);

    例如：创建1个椭球

    let engine = new GVOL.GvolEngine('GvolContainer');
let obj = [{
            gvolType:'Ellipsoid',
            properties: {
                color: '#FF0000', //颜色
             },
            geometry:{
                coordinates: [86,30]
            }
        }]
let result = engine.graphicLayer.add(obj,'Ellipsoid001','Ellipsoid');

  • remove(graph: Graph)：方法：删除标绘对象

    删除指定的标绘对象

    let engine = new GVOL.GvolEngine('GvolContainer');
engine.graphicLayer.remove(graph);

  • removeAll()：方法：删除所有标绘对象

    删除所有标绘对象

    let engine = new GVOL.GvolEngine('GvolContainer');
engine.graphicLayer.removeAll();

# ImageLayer | 地图层

  • BaiduImageryProvider：百度api支持类

# TileLayer | 切片层

  • TileLayer：切片类服务api支持类

# Event | 事件基类

  • on (type:string, fn:Function, context?:any): 方法：监听事件
  • fire (type:string, data:any): 激活对象的某个监听事件

← GvolEngine →