Re: Unwanted lined in PDF-exported Graphics3D
- To: mathgroup at smc.vnet.net
- Subject: [mg86690] Re: Unwanted lined in PDF-exported Graphics3D
- From: Szabolcs Horvát <szhorvat at gmail.com>
- Date: Wed, 19 Mar 2008 05:20:19 -0500 (EST)
- Organization: University of Bergen
- References: <fro362$i47$1@smc.vnet.net>
Mariano Suárez-Alvarez wrote:
> Simple code as
>
> Export["test.pdf",
> Graphics3D[{
> Polygon[Table[Chop[{Cos[t], Sin[t], 0}], {t, 0, 2 Pi, 0.1}]]
> }]
> ]
>
> results in a PDF file which has lots of extra lines on the surface.
>
> Is there a way to get rid of them?
In this specific case I cannot see any lines with Adobe Reader 8.1.2.
However I think I know the problem that you are referring to. The lines
are an artifact of antialiasing, so there is not way to get rid of them
(apart from using a different PDF reader).
For some reason Mathematica likes to break up large polygons into many
small ones and their edges become visible.
See this thread:
http://groups.google.com/group/comp.soft-sys.math.mathematica/browse_thread/thread/2f61a13953fc1973/553f73ed80fea6c3#553f73ed80fea6c3