CGAL users discussion list

As Andreas explained:
    x  = hx/hw
    y  = hy/hw

hx,hy,hw are not unique, they are defined up to a multiplicative 
constant factor.
(hx,hy,hw)=(c.hx,c.hy,c.hw) for any constant c different from 0.
This is the usual homogeneous framework.


 wrote:
> Thanks, but I can not understand how to compute hx from a given x.
>
> can you explain?