Re: graphics rendering glitch?
- To: mathgroup at smc.vnet.net
- Subject: [mg22680] Re: [mg22643] graphics rendering glitch?
- From: Hartmut Wolf <hwolf at debis.com>
- Date: Sat, 18 Mar 2000 01:27:54 -0500 (EST)
- Organization: debis Systemhaus
- References: <200003161411.JAA10221@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Gianluca Gorni schrieb:
>
> Hello!
>
> Working on a Mac with Mathematica 4 I have noticed that graphics primitives
> contained in a GraphicsArray object do not obey the PlotRange instructions,
> but spill over into neighbouring plots. For example try this:
>
> c = Graphics[{Circle[{0, 0}, 1]}, PlotRange -> {{0, 1}, {0, 1}}];
>
> Show[GraphicsArray[{c, c}]];
>
> The spillover does not occur in the Export[]'ed versions. So I guess
> it is just one more quirk of the front end rendering.
>
> I wonder if and when we are going to get a version of the Mac front
> end that takes full advantage of the graphics engine of the upcoming
> MacOS X.
>
Gianluca,
I just tried your example on my Version 4 for MS Windows (under Windows
NT). To make the problem even more visible I did:
In[1]:=
c = Graphics[{Circle[{0, 0}, 1]}, PlotRange -> {{0, 1}, {0, 1}},
AspectRatio -> Automatic, Background -> Hue[.25, .1, 0.9]];
In[2]:=
Show[GraphicsArray[{{c, c}, {c, c}}], Background -> GrayLevel[0.6]];
Me too, I see that the graphics primitive circle is not clipped at the
borders of the elements of the individual graphics ranges (c), but at
the borders of the resulting GraphicsArray. Though buggy, this is is
understandable if circle is passed as a PostScript primitive to low
level rendering (but whom shall I tell this! BTW the graphics I saw at
your site <http://www.dimi.uniud.it/~gorni> are quite impressive).
If ...
In[3]:=
cs = DisplayString[
Graphics[{Thickness[0.025], Hue[0.75, 1., 0.7], Circle[{0, 0},
1]},
PlotRange -> {{0, 1}, {0, 1}}, AspectRatio -> Automatic,
Background -> Hue[.25, .1, 0.9]]];
In[4]:= cc = Graphics[PostScript[cs]];
In[5]:=
Show[GraphicsArray[{{c, cc}, {c, cc}}], Background -> GrayLevel[0.6]];
...things become pretty queer.
Hartmut
- References:
- graphics rendering glitch?
- From: Gianluca Gorni <gorni@dimi.uniud.it>
- graphics rendering glitch?