innerArcStart property
Offset
innerArcStart
when drawing a donut in one stroke, starting from the outer perimeter, this is the final point, it lies on the inner perimeter of the donut
Implementation
Offset get innerArcStart {
double x4 = radiusStart * cos(angleStart) + center.dx;
double y4 = radiusStart * sin(angleStart) + center.dy;
return Offset(x4,y4);
}