fix: fix the error that when the grid is a function and specify the t…

…ype as 'arc'. Closed #331.

src/chart/controller/axis.js

@@ -316,7 +316,7 @@ class AxisController {
         });
         axis.gridPoints = gridPoints;
 
-        if (coord.isPolar && grid.type === 'arc') {
+        if (coord.isPolar) {
           axis.center = coord.center;
           axis.startAngle = coord.startAngle;
           axis.endAngle = coord.endAngle;

test/bug/issue-331-spec.js

@@ -0,0 +1,75 @@
+const expect = require('chai').expect;
+const F2 = require('../../src/core');
+require('../../src/geom/line');
+require('../../src/coord/polar');
+require('../../src/component/axis/circle');
+
+const canvas = document.createElement('canvas');
+canvas.width = 375;
+canvas.height = 260;
+canvas.id = 'issue331';
+document.body.appendChild(canvas);
+
+describe('Issue 331', () => {
+  it('Issue 331', () => {
+    const recentOneMonth = [
+      { name: '超大盘能力', value: 6.5 },
+      { name: '抗跌能力', value: 9.5 },
+      { name: '稳定能力', value: 9 },
+      { name: '绝对收益能力', value: 10 },
+      { name: '选证择时能力', value: 4 },
+      { name: '风险回报能力', value: 8 }
+    ];
+    const chart = new F2.Chart({
+      id: 'issue331',
+      pixelRatio: window.devicePixelRatio
+    });
+
+    chart.source(recentOneMonth, {
+      value: {
+        min: 0,
+        max: 10,
+        tickCount: 10
+      }
+    });
+    chart.coord('polar');
+    chart.axis('value', {
+      grid: () => {
+        return {
+          lineWidth: 1,
+          type: 'arc',
+          lineDash: null
+        };
+      },
+      label: null,
+      line: null
+    });
+    chart.axis('name', {
+      grid: {
+        lineDash: null
+      },
+      label: {
+        opacity: 0.4,
+        stroke: 'white'
+      }
+    });
+
+    chart
+      .line()
+      .position('name*value')
+      .color('#FE5C5B')
+      .size(2)
+      .shape('smooth');
+
+    chart.render();
+
+    const axisController = chart.get('axisController');
+    const axes = axisController.axes;
+    const radiusAxis = axes.radius;
+    const coord = chart.get('coord');
+    expect(radiusAxis.grid).to.be.an.instanceof(Function);
+    expect(radiusAxis.center).to.eql(coord.center);
+    expect(radiusAxis.startAngle).to.eql(coord.startAngle);
+    expect(radiusAxis.endAngle).to.eql(coord.endAngle);
+  });
+});