[pygtk] Drawing polygon with Cairo

[Pietro Battiston]

Il giorno mar, 01/12/2009 alle 22.39 +0530, nipun batra ha scritto:
> 
> 
> On Tue, Dec 1, 2009 at 10:37 PM, Pietro Battiston <toobaz a email.it>
> wrote:
>         Il giorno mar, 01/12/2009 alle 22.11 +0530, nipun batra ha
>         scritto:
>         > There seems to be an easy way to draw polygons using
>         Graphics Context
>         > as described in chap 12 of manual.How can the same thing be
>         done using
>         > cairo
>         
>         
>         What (easy) way?
>         What manual?
>         Some particular kind of polygon?
>         
>         For a generic polygon, I don't think anythink sensibly
>         "easier" than a
>         sequence of "line_to" followed by "close" and "strike" (or
>         "fill") is
>         conceivable.
>         
>         But I think that, both to increase the probability of a
>         satisfying
>         answer and as a mere matter of respect for people to whom
>         you're asking
>         to help you, you should be more clear in your questions.
>         
>         Pietro
>         
> 
> 
> This is what i have thought as of now.wanted to use faster
> implementations.
> 
> 
> def draw_polygon(x0, y0,x1,y1,x2,y2,x3,y3):
> cr.move_to(x0,y0)
> cr.line_to(x1,y1)
> cr.move_to(x1,y1)
> cr.line_to(x2,y2)
> cr.move_to(x2,y2)
> cr.line_to(x3,y3)
> cr.move_to(x3,y3)
> cr.line_to(x0,y0)
> 
> #cr.arc(x, y, 2, 0, 2 * pi)
> cr.set_source_rgba(0, 0, 0, 1)
> cr.stroke()
> 
> 

What makes you think this is slow?

Pietro