Re: Argh: Why are arrows clipped to the graph?

[Harald H. <h.h...@tu...>]

On Sat, 12 Nov 2005, Daniel J Sebald wrote:

> Oh, I see what you are saying.  (Got to explain a bit more.)  The text
> clips, but not the lines.  Yeah.

Exactly.

> > If the line and the filled-path code supports correct clipping and the
> > original arrow code uses these clipped lines and filled paths,
> > parly clipping of arrow heads will be supported by every terminal.
>
> OK, here we get into a philosophical debate.  If you have a full-featured
> resource like PostScript, shouldn't you allow the arrows to extend past the
> edge and let PostScript do the clipping?  I can imagine some users who don't
> do things exactly right, but then can correct matters with an offset in
> there word processor or whatever.  Someone shifts their EPS file into view
> and lo-and-behold, the arrow or line is cropped in a funny way.  [Not too
> much different than the example you've shown for PNG.]

You are right. Gnuplot should not do any clipping for postscript, and the
terminal itself could add the postscript clipping on demand:

%%BoundingBox 50 50 350 250
[...]
/Clipping false def
gsave
Clipping {
  newpath
  moveto 50 50
  lineto 350 50
  lineto 350 250
  lineto 50 250
  closepath
  clip
} if
[... all the rest of the file ...]
grestore
%%Trailer

Best regards
Harald

-- 
Harald Harders
h.h...@tu...
http://www.harald-harders.de