C# Класс ImageMagick.PathArcRel

Draws an elliptical arc from the current point to (X, Y) using relative coordinates. The size and orientation of the ellipse are defined by two radii(RadiusX, RadiusY) and an RotationX, which indicates how the ellipse as a whole is rotated relative to the current coordinate system. The center of the ellipse is calculated automagically to satisfy the constraints imposed by the other parameters. UseLargeArc and UseSweep contribute to the automatic calculations and help determine how the arc is drawn. If UseLargeArc is true then draw the larger of the available arcs. If UseSweep is true, then draw the arc matching a clock-wise rotation.