Re: line corners with terminals for vector graphics

[<br...@ph...>]

Mojca Miklavec wrote:
> At the very beginning I wanted to ask for an additional function
> (polyline), but then I figured out that the Metapost terminal has a
> nice workaround for it: it always saves the last point and if the next
> line continues in the same point (without changing line type or color
> inbetween), it draws a continuous path rather than two separate lines.

There's no sane reason for implementing any "workaround" for this --- 
the terminal driver API already *has* a polyline function.  That's why
we have two functions, term->move() and term->vect(), instead of a 
single term->draw_line(from,to).  Each term->move() conceptually starts 
a new polyline, each term->vect() extends it by one leg, any other call 
but term->vect() ends it.

We don't need a term->polyline().  The only thing needed to complete
the existing API in this area would be a term->closecycle() or some 
such, to distinguish between open and closed polylines.