On Mar 21, 2:06 am, Duke Normandin <dukeofp...@[EMAIL PROTECTED]
> wrote:
> > : BOX3 ( x1 y1 x2 y2 -- )
> > dup-points topline LINE
> > dup-points rightline LINE
> > dup-points bottomline LINE
> > leftline LINE ;
> So if I wanted to play with all of this as a learning exercise, how
would
> I define LINE?
It depends on your graphics hardware and operating system, now doesn't
it?
It could be:
* available as a primitive in your implementation
* available as an external function call in your implementation
* a "roll your own" process.
IOW, its exactly the same as if there was a tutorial for C or any
other
general purpose language without a set of graphics primitives at the
level of the language definition ... you get to some functions that
you
are simply going to treat as available and the sup****t files for the
tutorial makes sure that the assumption is valid for the compiler and
operating system combinations that the tutorial explicitly sup****ts.
