Re: gEDA: Win32 GTK rendering speed

[Charles Lepple <clepple-at-NOSPAMgmail_dot_com>]

On 4/15/05, Tomasz Motylewski <T.Motylewski@bfad.de> wrote:
> 
> > > Could you quantify this "considerably"?
> > >
> > About 2-3x in my case, but maybe more as I haven't benchmarked it.
> > Sample code attached.
> 
> Looks very promising. I was afraid that beginning of next line must overlap
> with the end of previous line, but your code does not check it. Must the lines
> drawn form continuous "zigzag" ?

they only have to form a continuous zigzag for gdk_draw_lines.

http://developer.gimp.org/api/2.0/gdk/gdk-Drawing-Primitives.html#gdk-draw-segments

gdk_draw_segments uses a list of start-end pairs:

typedef struct {
  gint x1;
  gint y1;
  gint x2;
  gint y2;
} GdkSegment;

-- 
- Charles Lepple