[Fwd: Re: [gl2ps] PDF production problems]

[Christophe Geuzaine]

Shai Ayal wrote:
> on my WinXP both acroread 6 for the pdf file & gsview for the eps file 
> show a similar scene with solids -- I guess this is a viewer issue and 

Yes, it's because Apple's PDF viewer does not support '/ShadingType 4'. 
I think someone on the list submitted a bug report to Apple about that 
last year, but I guess it couldn't hurt to submit a new one.

Another solution would be to use the same trick as in PostScript, i.e., 
provide the option to subdivide the triangles instead of using the 
shading stuff.

Christophe



> not a gl2ps issue
> 
>     Shai
> 
> Guy Barrand wrote:
> 
>>
>>
>> Le 19 déc. 04, à 04:04, Christophe Geuzaine a écrit :
>>
>>
>> Hello Micha
>>
>>
>>     *
>>     De: *Micha Bieber <krischnamurti at users.sourceforge.net>
>>     *Date: *19 décembre 2004 00:02:47 GMT+01:00
>>     *À: *gl2ps at geuz.org
>>     *Objet: Rép : [gl2ps] PDF production problems
>>     *
>>
>>     Hallo Guy,
>>
>>     This looks like a premature call to gl2psEndViewport to me. At least,
>>     your PDF seems to contain exactly one graphics state restore too much
>>     (If you will fix this, replace the first single letter 'Q' after the
>>     sequence "/GSa gs" in your example provided file by '%' with a 
>> _binary_
>>     editor). The mentioned function is the only one in gl2ps, producing a
>>     'Q' in this context.
>>
>>
>> You were right for the bad balance Begin/EndViewport. I have corrected
>> that, and now the PDF viewer of the Mac does not crash anymore ; but 
>> anyway
>> some problems remain. Mainly all the lines seems ok (including linw width
>> and line pattern), the text too (treated as bitmaps in my things) but 
>> all the solids
>> are out ! Any idea ?
>>
>> I have attached two files (e.ps and e.pdf) to demonstrate that. The e.ps
>> is displayed ok with ghostview, but the e.pdf lacks the solids with 
>> both "Apercu"
>> and xpdf on a Linux.
>>
>> Thanks for the help.
>>
>>
>>
>>
>>
>>
>> Guy
>>
>> -------------------------------------------------------------
>> Guy Barrand. eXtreme debugger.
>> LAL
>> Universite de Paris-Sud
>> B.P 34
>> 91898 ORSAY CEDEX France
>>
>> e-mail: barrand at lal.in2p3.fr
>> Tel: +33 (1) 64 46 84 17
>> Fax: +33 (1) 69 07 94 04
>>
>> office at cern: B01-R001
>> Tel at cern: 41 22 76 72335
>> -------------------------------------------------------------
>>
>>
>>
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> 
> 
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-- 
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org