如何绘制一个扑扑的扇区？

Question

I have to paint a sector of circle in flutter. I used this code

canvas.drawArc(
    Rect.fromCircle(
        center: Offset(size.width / 2, size.height - 50),
        radius: size.width / 2),
    degrees,
    width,
    true,
    paint);

and it worked fine. However for some inevitable reasons I can't use this method and I have to use the method

canvas.drawPath()

For that I need a path but it only has options to create arc and not sector.

Answer 1

Path#arcTo documentation says:

If the forceMoveTo argument is false, adds a straight line segment and an arc segment. [...] The line segment added if forceMoveTo is false starts at the current point and ends at the start of the arc.

so this code will draw a segment:

Offset center = Offset(250, 250);
Rect rect = Rect.fromCircle(center: center, radius: 200);
Path path = Path()
  // set the "current point"
  ..moveTo(center.dx, center.dy)
  ..arcTo(rect, pi / 4, pi / 2, false);
canvas.drawPath(path, p);

Answer 2

you should be able to create a path with the same parameters you used in drawArc()

try something like

Path.arcTo(Rect.fromCircle(center: Offset(size.width / 2, size.height - 
50),radius: size.width / 2), degrees, width, true,)

then use the returned path in canvas.drawPath()