[GitHub] liuswin commented on issue #8269: 关系图normal状态下label.rotate字段配置无响应

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

liuswin commented on issue #8269: 关系图normal状态下label.rotate字段配置无响应
URL: https://github.com/apache/incubator-echarts/issues/8269#issuecomment-429761158
 
 
   > @liuswin 能告诉下是如何添加的吗，方便的话，帮忙贴个代码片段出来，万分感谢。
   
   data.eachItemGraphicEl(function (el, idx) {
     ...
     if (seriesModel.get('data')[idx].label.cusLabelRoate === true) {
       var pos = data.getItemLayout(idx);
       var rad = Math.atan2(pos[1] - cy, pos[0] - cx);
       if (rad < 0) {
           rad = Math.PI * 2 + rad;
       }
       var isLeft = pos[0] < cx;
       if (isLeft) {
           rad = rad - Math.PI;
       }
       var textPosition = isLeft ? 'left' : 'right';
       symbolPath.setStyle({
           textRotation: -rad,
           textPosition: textPosition,
           textOrigin: 'center'
       });
       symbolPath.hoverStyle && (symbolPath.hoverStyle.textPosition = textPosition);
     }
   }

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