createPath method
Implementation
@override
Path createPath(double size, Neighbors? neighbors) {
Path path = Path();
double cSizeFraction = radiusFraction.coerceIn(0.0, 1.0);
double padding = size * (1 - cSizeFraction)/2;
path.addOval(Rect.fromLTRB(padding, padding, size- padding, size-padding));
return path;
}