svg模式下,折线图在数据都为0的情况下,设置shadowOffset或shadowBlur会导致折线不显示

[jamesleekko]

Version

5.1.2

Steps to reproduce

1.renderer设置为svg
2.正常设置折线图
3.折线图数据value值都为0
4.series中给lineStyle设置shadowoffset或shadowblue

A simple demo

option = {
    xAxis: {
        type: 'category',
        data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    },
    yAxis: {
        type: 'value'
    },
    series: [{
        data: [0, 0, 0, 0, 0, 0, 0],
        type: 'line',
        stack: true,
        color: '#7f64ff',
        symbol: 'none',
        smooth: true,
        lineStyle: {
            shadowColor: 'red',
            shadowBlur: 5,
            shadowOffsetX: 0,
            shadowOffsetY: 0
        }
    }]
};

What is expected?

线条正常在底部显示

What is actually happening?

线条不显示

[echarts-bot]

Hi! We've received your issue and please be patient to get responded. 🎉
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[echarts-bot]

@jamesleekko It seems you are not using English, I've helped translate the content automatically. To make your issue understood by more people, we'd like to suggest using English next time. 🤗

TRANSLATED

TITLE

Setting a shadowOffset or shadowBlur causes the line to not be displayed if the data is all 0

BODY

Version

5.1.2

Steps to reproduce

1. Set the line chart normally
2. The value of the line graph data is all 0
3. Set shadowoffset or shadowblue for lineStyle in series

What is expected?

The line is displayed at the bottom normally

What is actually happening?

Lines are not displayed


[echarts-bot]

@jamesleekko Please provide a minimum reproducible demo for the issue either with https://codepen.io/Ovilia/pen/dyYWXWM , https://www.makeapie.com/editor.html or https://codesandbox.io/s/mystifying-bash-2uthz.

A minimum reproducible demo should contain as little data and components as possible but can still illustrate your problem. This is the best way for us to reproduce it and solve the problem faster.

[plainheart]

https://www.makeapie.com/editor.html?c=xg-vQtk2Cd&v=1 未能复现。

[jamesleekko]

https://www.makeapie.com/editor.html?c=xg-vQtk2Cd&v=1 未能复现。

我再次测试了下，canvas模式下是正常的，此问题在svg模式下会出现。