[GitHub] [echarts] Justpipidog removed a comment on issue #2854: echarts3能否响应鼠标滚轮事件

[GitBox <gi...@apache.org>]

Justpipidog removed a comment on issue #2854:
URL: https://github.com/apache/echarts/issues/2854#issuecomment-785539776


   目前我想在实现有dataroom 的折线图中可以通过滚轮的缩放，当放大到某一地步时，就能够触发比如markpoint，显示相关信息；当缩小某一地步时，又能隐藏相关信息。
   
   类比生活中使用地图的行为：
   当地图没有放大时，是不能显示某些细节的，只有当放大到某一个地步时，才能显示细节；同时当地图一缩小时，又能隐藏某些细节。
   
   目前 myChart.getZr().on('mousewheel', function () {} ) 只能检测缩放事件，缺不能检测是缩小还是放大，以及放大，缩小的尺度。
   
   
   


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