feat: allow full circle in donut chart

src/js/charts/DonutChart.js

@@ -2,7 +2,7 @@ import AggregationChart from './AggregationChart';
 import { getComponent } from '../objects/ChartComponents';
 import { getOffset } from '../utils/dom';
 import { getPositionByAngle } from '../utils/helpers';
-import { makeArcStrokePathStr } from '../utils/draw';
+import { makeArcStrokePathStr, makeStrokeCircleStr } from '../utils/draw';
 import { lightenDarkenColor } from '../utils/colors';
 import { transform } from '../utils/animation';
 import { FULL_ANGLE } from '../utils/constants';
@@ -63,7 +63,10 @@ export default class DonutChart extends AggregationChart {
 				curStart = startPosition;
 				curEnd = endPosition;
 			}
-			const curPath = makeArcStrokePathStr(curStart, curEnd, this.center, this.radius, this.clockWise, largeArc);
+			const curPath =
+				originDiffAngle === 360
+					? makeStrokeCircleStr(curStart, curEnd, this.center, this.radius, this.clockWise, largeArc)
+					: makeArcStrokePathStr(curStart, curEnd, this.center, this.radius, this.clockWise, largeArc);
 
 			s.sliceStrings.push(curPath);
 			s.slicesProperties.push({

src/js/utils/draw.js

@@ -141,6 +141,18 @@ export function makeArcStrokePathStr(startPosition, endPosition, center, radius,
 		${arcEndX} ${arcEndY}`;
 }
 
+export function makeStrokeCircleStr(startPosition, endPosition, center, radius, clockWise=1, largeArc=0){
+	let [arcStartX, arcStartY] = [center.x + startPosition.x, center.y + startPosition.y];
+	let [arcEndX, midArc, arcEndY] = [center.x + endPosition.x, radius * 2 + arcStartY, center.y + startPosition.y];
+
+	return `M${arcStartX} ${arcStartY}
+		A ${radius} ${radius} 0 ${largeArc} ${clockWise ? 1 : 0}
+		${arcEndX} ${midArc}
+		M${arcStartX} ${midArc}
+		A ${radius} ${radius} 0 ${largeArc} ${clockWise ? 1 : 0}
+		${arcEndX} ${arcEndY}`;
+}
+
 export function makeGradient(svgDefElem, color, lighter = false) {
 	let gradientId ='path-fill-gradient' + '-' + color + '-' +(lighter ? 'lighter' : 'default');
 	let gradientDef = renderVerticalGradient(svgDefElem, gradientId);