Series.custom.renderItem return BezierCurve will fill color in the whole area instead of being a Curve.

[wcai49]

Version

5.0.0-alpha.2

Steps to reproduce

Just copy and paste these in any echarts online editor.

const colors = ["#1576d2", "#d14a82", "#26c1f2", "#a166ff", "#9C2BB6"] const radius = [0.7, 0.75] const data = [{ name: 'Mon', value: 35 }, { name: 'Tue', value: 35 }, { name: 'Wed', value: 35 }, { name: 'Thu', value: 35 }, { name: 'Fri', value: 35 }

] const sum = data.reduce((prev, curr) => { curr._start = prev curr._end = prev curr.value return curr._end }, 0)

function renderItem(params, api) { const ceilAngle = Math.PI / 100 // 装饰的显示角度 const coordSys = params.coordSys const coordRadius = coordSys.r const val = api.value(0) const index = api.value(1) const r0 = coordRadius * radius[0] const r = coordRadius * radius[1] const startAngle = (data[index]._start * Math.PI * 2) / sum - Math.PI / 2 const endAngle = (data[index]._end * Math.PI * 2) / sum - Math.PI / 2

const points = api.coord([api.value(0), api.value(1)]);
return {
    type: "group",
    children: [{
        type: 'sector',
        shape: {
            cx: coordSys.cx,
            cy: coordSys.cy,
            r,
            r0,
            startAngle: startAngle,
            endAngle: endAngle
        },
        style: api.style({
            fill: colors[index],
            opacity: 0.5
        })
    },
    {
        type: 'bezierCurve',
        shape: {
            x1: points[0],
            y1: points[1],
            x2: points[0] >= coordSys.cx ? points[0]   100 : points[0] - 100,
            y2: points[1] >= coordSys.cy ? points[1]   100 : points[1] - 100,
            cpx1: points[0] >= coordSys.cx ? points[0]   50 : points[0] - 50,
            cpy1: points[1] >= coordSys.cy ? points[1]   60 : points[1] - 60,
            cpx2: points[0] >= coordSys.cx ? points[0]   50 : points[0] - 50,
            cpy2: points[1] >= coordSys.cy ? points[1] - 60 : points[1]   60,
            percent: 1
        },
        
        style: ({
            fill: colors[index],
        })
    }]
}

}

option = { color: colors, angleAxis: { type: 'category', show: true, }, radiusAxis: { show: true }, polar: { radius: "75%" }, series: [{ type: 'custom', data: data, renderItem: renderItem, coordinateSystem: 'polar' }] }

What is expected?

So basically the renderItem is supposed to print 5 different BezierCurves with different angles.

What is actually happening?

The Bezier curve requires 8 variables: x1, y1, x2, y2, cpx1, cpy1, cpx2, cpy2. These 4 points declare one Bezier curve, but here they were recognized by the renderItem as an area instead of a curve.

---

I was asked to change the Pie chart's labelLine from default to the Bezier Curves. I was trying to edit the source code and it worked perfectly. However, the build function was not working well, so I cannot run the build command and pack it up after editing. Thus, I have to draw this pie chart by custom series.

Would that be another option if I submit my source code version with an additional labelLine.isBezier API? Will the Echarts developers review and merge my function into the source code? How fast it can be?

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[100pah]

Try stroke instead of fill please.

[github-actions[bot]]

This issue has been automatically marked as stale because it did not have recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this issue.

[github-actions[bot]]

This issue has been automatically closed because it did not have recent activity. If this remains to be a problem with the latest version of Apache ECharts, please open a new issue and link this to it. Thanks!