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point.x[0] : point.x,\n      y: point.y[0],\n    };\n    const endPoint = {\n      x: isArray(point.x) ? point.x[1] : point.x,\n      y: point.y[1],\n    };\n    let angle;\n    const startAngle = getAngleByPoint(coordinate, startPoint);\n    if (point.points && point.points[0].y === point.points[1].y) {\n      angle = startAngle;\n    } else {\n      let endAngle = getAngleByPoint(coordinate, endPoint);\n      if (startAngle >= endAngle) {\n        // 100% pie slice\n        endAngle = endAngle + Math.PI * 2;\n      }\n      angle = startAngle + (endAngle - startAngle) / 2;\n    }\n    return angle;\n  }\n\n  /** @override */\n  protected getCirclePoint(angle: number, offset: number) {\n    const coordinate = this.getCoordinate();\n    const center = coordinate.getCenter();\n    const r = coordinate.getRadius() + offset;\n    return {\n      ...polarToCartesian(center.x, center.y, r, angle),\n      angle,\n      r,\n    };\n  }\n}\n"]}