antvis/G2

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5.0的漏斗图无效 #4868
shield2018 posted onGitHub
https://g2.antv.antgroup.com/spec/mark/interval 文档关于interval的shape可以设定为funnel,但是无效。
看源码发现只有Funnel的坐标计算 https://github.com/antvis/G2/blob/d481921ad605672ee0f8b9f2ebde4dd0e5cb5bd9/src/shape/interval/color.ts#L40-L68 color.tx 中却使用了Rect 绘制。funnel类型绘制什么可以支持?