drawCircle method
Draws a circle centered at the point given by the first argument and that has the radius given by the second argument, with the Paint given in the third argument. Whether the circle is filled or stroked (or both) is controlled by Paint.style.
Implementation
void drawCircle(Offset c, double radius, Paint paint) {
assert(_offsetIsValid(c));
assert(paint != null);
_drawCircle(c.dx, c.dy, radius, paint._objects, paint._data);
}