public void Flip()
{
clsPoint3d p3 = default(clsPoint3d);
p3 = P1.Copy();
P1 = P2.Copy();
P2 = p3.Copy();
}
public clsLine3d Copy()
{
clsPoint3d pt1 = new clsPoint3d();
clsPoint3d pt2 = new clsPoint3d();
pt1 = P1.Copy();
pt2 = P2.Copy();
return(new clsLine3d(pt1, pt2));
}
public clsLine Copy()
{
clsPoint pt1 = new clsPoint();
clsPoint pt2 = new clsPoint();
pt1 = P1.Copy();
pt2 = P2.Copy();
return(new clsLine(pt1, pt2));
}