This output is indeed incorrect in command line (same defect). A quick 
review of trac tickets show #10215 <http://trac.sagemath.org/ticket/10215> 
(most likely candidate), possibly #14428 
<http://trac.sagemath.org/ticket/14428> ; #12279 
<http://trac.sagemath.org/ticket/12279> or analogous might be an easy fix.

Do you think that this deserves a new ticket ? That it should be added to 
#10215 <http://trac.sagemath.org/ticket/10215> ? or what ?

HTH,

--
Emmanuel Charpentier

Le vendredi 27 mars 2015 18:16:18 UTC+1, Volker Braun a écrit :
>
> The tachyon output is the same as with (p1+p2).show(viewer='tachyon') on 
> the commandline. Thats just how Sage uses tachyon. 
>
> On Friday, March 27, 2015 at 3:04:23 PM UTC+1, Emmanuel Charpentier wrote:
>>
>>
>>
>> Le vendredi 27 mars 2015 14:30:56 UTC+1, Volker Braun a écrit :
>>>
>>> On Friday, March 27, 2015 at 2:18:44 PM UTC+1, Emmanuel Charpentier 
>>> wrote:
>>>
>>>> 3) 3D rendering in IPython notebook seems broken (curious results).
>>>>
>>>
>>> Please define. You mean tachyon (raytracing) output?
>>>
>>
>> Yes (I typed too fast...). Example  in attached files (IPyton notebook 
>> file and the same exported in PDF).
>>
>> [ I also note that PDF export might benefit from encoding fix (utf8, 
>> anyone ?) ]
>>
>> [ Related note : the "rich text output" refactoring broke sage_mode 0.13. 
>> I left a issue on the bitbucket site, and mailed Ivan Andrus. ]
>>
>>>
>>> I don't think the JSmol situation can be improved. 
>>>
>>
>>  So that's JSmol, not jmol ?
>>
>> Not so good : the "one file" format of the IPython notebook is a big win 
>> over the "closed" tree of the current notebook. But problems with 3D might 
>> push some projects off this format.
>>
>> Anyway, and as ever, thank you for your work.
>>
>> HTH,
>>
>> --
>> Emmanuel Charpentier
>>
>

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