/// <summary>
/// Adds a circular arc of the given radius to the current path.
/// The arc is centered at (xc, yc),
/// begins at angle1 and proceeds in the direction
/// of decreasing angles to end at angle2.
/// If angle2 is greater than angle1 it will be progressively decreased
/// by 1 degree until it is less than angle1.
/// If there is a current point, an initial line segment will be added to the path
/// to connect the current point to the beginning of the arc.
/// If this initial line is undesired,
/// it can be avoided by calling NewPath() before calling ArcNegative().
/// </summary>
/// <param name='xc'>
/// Xc.
/// </param>
/// <param name='yc'>
/// Yc.
/// </param>
/// <param name='radius'>
/// Radius.
/// </param>
/// <param name='angle1'>
/// Angle1 in degrees
/// </param>
/// <param name='angle2'>
/// Angle2 in degrees
/// </param>
public void ArcNegative(double xc, double yc, double radius, double angle1, double angle2)
{
handler.ArcNegative(Backend, xc, yc, radius, angle1, angle2);
}
