arc method
aX, aY -- The center of the arc offset from the last call.
aRadius -- The radius of the arc.
aStartAngle -- The start angle in radians.
aEndAngle -- The end angle in radians.
aClockwise -- Sweep the arc clockwise. Defaults to false.
Adds an EllipseCurve to the path, positioned relative
to page:.currentPoint.
Implementation
Path arc(double aX, double aY, double aRadius, double aStartAngle, double aEndAngle, [bool? aClockwise]) {
final x0 = currentPoint.x;
final y0 = currentPoint.y;
absarc(aX + x0, aY + y0, aRadius, aStartAngle, aEndAngle, aClockwise);
return this;
}