public override bool rotate(Point2D mPoint, double beta)
{
base.rotate(mPoint, beta);
m_center = Numerics.rotate(m_center, mPoint, beta);
updateAngle();
return(true);
}
public virtual bool rotate(Point2D mPoint, double beta)
{
m_startpoint = Numerics.rotate(m_startpoint, mPoint, beta);
m_endpoint = Numerics.rotate(m_endpoint, mPoint, beta);
return(true);
}