如何在颤动中使圆弧边缘变圆？

Question

我需要创建一个如下的弧形图：

使用画布我已经创建了这个：

我的代码：

class CustomChartPainter extends CustomPainter {
  @override
  void paint(Canvas canvas, Size size) {

    Rect drawingRect = Rect.fromCircle(center: Offset(size.width / 2, size.height / 2), radius: size.width / 2);


    final Paint paint2 = Paint();
    paint2.color = const Color.fromRGBO(0, 0, 0, 0.04);
    paint2.style = PaintingStyle.stroke;
    paint2.strokeWidth = 50;

    canvas.drawCircle(Offset(size.width / 2, size.height / 2), size.width / 2, paint2);

    canvas.drawArc(drawingRect,
        -pi / 2 + 0.35,
        pi - 0.35,
        false,
        greenPaint);

    canvas.drawArc(drawingRect,
        pi / 2 + 0.35,
        pi - 0.35,
        false,
        orangePaint);
  }
}

如何如第一张图片所示倒圆弧的边缘？

Answer 1

如@pskink所述，解决方案是使用Paint.strokeCap，更准确地说是：paint.strokeCap = StrokeCap.round