drawTicks method
Implementation
void drawTicks(
Paint paint,
Canvas canvas,
) {
var r = radius + ticksOffset - strokeWidth / 2;
paint.color = ticksColor;
paint.strokeWidth = ticksWidth;
List.generate(ticks!, (i) => i + 1).forEach((i) {
double angle = (360 / ticks!) * i * pi / 180 + offsetRad;
canvas.drawLine(calcCoords(radius, radius, angle, r),
calcCoords(radius, radius, angle, r + ticksLength), paint);
});
}