[GitHub] surui0419 opened a new issue #8305: echarts GL中，怎么改变type:'lines3D'的三维飞线距离三维地理坐标系表面的距离

[GitBox]

surui0419 opened a new issue #8305: echarts 
GL中，怎么改变type:'lines3D'的三维飞线距离三维地理坐标系表面的距离
URL: https://github.com/apache/incubator-echarts/issues/8305
 
 
   
   ### One-line summary [问题简述]
   使用echarts 
GL绘制了一个3D的地球，通过type:‘lines3D'绘制了一条跨越大半个地球的飞线，因为两个点的跨越幅度很大，导致这条3D飞线绘制出来离地球表面很远的距离，怎么通过设置让这条飞线离地球表面距离近一点
   
   ### Version & Environment [版本及环境]
   + ECharts version [ECharts 版本]:
   claygl, version 1.2.1
   echarts, version 4.1.0
   + Browser version [浏览器类型和版本]:
   Chrome
   + OS Version [操作系统类型和版本]:
   win10
   ### Expected behaviour [期望结果]
   
   期望能够调整3d飞线距离地球表面的距离
   
   ### ECharts option [ECharts配置项]
   <!-- Copy and paste your 'echarts option' here. -->
   <!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 
option。如何得到能运行的 option 参见上方的 guidelines for contributing] -->
   ```javascript
   option = {
    globe: {
             left: 0,
             right: '8%',
             top: '4.5%',
             bottom: 0,
             baseTexture: world, // 地球的纹理，支持图片或canvas对象或echarts实例作为纹理
             shading: "color", // 不受光照影响
             viewControl: {// 用于鼠标的旋转缩放控制
               zoomSensitivity: 0, // 缩放灵敏度 0关闭缩放
               rotateSensitivity: [2,0], //控制横、纵旋转灵敏度
               autoRotate: true, // 控制地球是否自转
               autoRotateDirection: "ccw", //控制自转方向
               autoRotateAfterStill: 4,
               autoRotateSpeed:10
             }
           },
           series: {
             type: 'lines3D',
             coordinateSystem: 'globe',
             blendMode: 'lighter',
             effect: { // 飞线 特效
               show: true,
               peroid: 2,
               trailColor: 'greenyellow'
             },
             lineStyle: { // 飞线颜色
               width: 2,
               color: '#02fd00',
               opacity: 0.8
             },
             data: [[[121.5,28.5],[-56.5,4.2]]]
           }
   }
   
   ```
   
   ### Other comments [其他信息]
   
   
![default](https://user-images.githubusercontent.com/38311239/39744728-d556aa92-52d7-11e8-8dfa-4ff0ee033905.png)
   
   

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