[Paraview] stereo menu was ignored?

Utkarsh Ayachit utkarsh.ayachit at kitware.com
Wed Feb 3 15:55:15 EST 2010


And here's the bug #:
http://paraview.org/Bug/view.php?id=10233

On Wed, Feb 3, 2010 at 3:52 PM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> You make very compelling points. It definitely makes sense to add such
> an option -- at least when not connected to a parallel/remote server.
> If I remember correctly, IceT doesn't do well with stereo. I am going
> to add a feature request to the bug tracker.
>
> Utkarsh
>
> On Wed, Feb 3, 2010 at 3:15 PM, Evan Bollig <bollig at gmail.com> wrote:
>> I dont agree. Opening in Stereo mode is safe even if it is not used
>> (it consumes a small amount of memory, but so what). Everything is 2D
>> if no GL commands render to back left/right buffers (i.e., the GL_BACK
>> buffer is always available). If you need to verify that the hardware
>> supports GL_STEREO, use glGetBoolean*() (or glGetInteger*() with
>> GL_AUX_BUFFERS to know if quad buffers are available) and initialize
>> GL_STEREO only on machines that can support it.
>>
>> Why would you want the user to restart paraview if maybe they dont
>> know their hardware and they arent sure which stereo mode to use?  No!
>> Give them a menu option and keep them inside your software. Keep in
>> mind that if I and many others like me have to stop a program, modify
>> command line options and restart the application to get the right
>> environment, the whole process should take less than 10 seconds and it
>> must be FULLY documented or I give up and find an application that
>> does it better (more intuitive) with less pain.
>>
>> More reason for a stereo menu: how do you propose control of
>> properties like Eye Separation?  Clearly the users wont know what
>> parameter to use until the software is running. Dont make them restart
>> 50 times until they get the parameter just right. Thats absurd!
>>
>> Another problem: say Im in CrystalEyes mode and I want to export a
>> movie. There are plenty of stereoscopic display solutions available
>> today. 3D computer screens, 3D movies, 3D TVs, 3D television channels.
>> Why cant ParaView export to stereoscopic movie formats (JPS/MPO AVI
>> format perhaps)? On top of that, if Im in CrystalEyes and I know the
>> stereo looks good, why cant I export a Stereoscopic movie AND an
>> anaglyph movie AND a 2D movie so my results can be viewed by audiences
>> with any capability?
>>
>> I just started playing with ParaViewGeo's SlideShow capabilities. Did
>> you know the slides also show in stereo? We're talking full 3D
>> stereoscopic presentations of scientific results *without* swapping
>> applications. Why havent you guys looked into integrating all of this?
>>
>> -Evan
>>
>>
>>
>> On Wed, Feb 3, 2010 at 2:53 PM, Utkarsh Ayachit
>> <utkarsh.ayachit at kitware.com> wrote:
>>> ParaView CVS (and 3.8 onwards ) has a command line option
>>> --stereo-type which allows you to choose the stereo type. It's not
>>> really safe to change the stereo type after ParaView has been started
>>> (rather views have been created) since for things like Crystal Eyes,
>>> the option must be enabled before the rendering context is created.
>>> Hence, we've made it a command line option.
>>>
>>> Utkarsh
>>>
>>> On Wed, Feb 3, 2010 at 2:50 PM, Evan Bollig <bollig at gmail.com> wrote:
>>>> What does that mean regarding the plugin. Does a plugin exist already
>>>> or will it need to be written?
>>>>
>>>> -Evan
>>>>
>>>> On Wed, Feb 3, 2010 at 2:07 PM, Robert Maynard <RobertJMaynard at gmail.com> wrote:
>>>>> I meant to say 3.4 and 3.6 instead of 2.4 and 2.6.
>>>>>
>>>>> On Wed, Feb 3, 2010 at 2:02 PM, Robert Maynard <RobertJMaynard at gmail.com>
>>>>> wrote:
>>>>>>
>>>>>> The patch that I have submitted was for 2.4 code base, with 2.6 all that
>>>>>> is needed is a custom toolbar plugin that calls setStereoType on the
>>>>>> currently active view.
>>>>>>
>>>>>> On Wed, Feb 3, 2010 at 1:45 PM, Evan Bollig <bollig at gmail.com> wrote:
>>>>>>>
>>>>>>> I see that ParaViewGeo has a stereo menu to allow users to select
>>>>>>> CrystalEyes / Anaglyph stereo modes while paraview is running (NOTE:
>>>>>>> without requiring a --stereo flag on the command line). It seems that
>>>>>>> one developer: Robert Maynard created the stereo menu and sent the
>>>>>>> source code (Stereo.zip) to the ITK mailing list on 9/29/2008. From
>>>>>>> what I can tell this message was ignored and no one attempted to
>>>>>>> integrate the menu into any other applications related to
>>>>>>> Paraview/ITK.
>>>>>>>
>>>>>>> Why?
>>>>>>>
>>>>>>> It seems obvious that this is something users need and want. We will
>>>>>>> be using ParaViewGeo instead of ParaView until something like this is
>>>>>>> added.
>>>>>>>
>>>>>>> -Evan Bollig
>>>>>>>
>>>>>>> --
>>>>>>> -Evan Bollig
>>>>>>> bollig at gmail.com
>>>>>>> bollig at scs.fsu.edu
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>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> -Evan Bollig
>>>> bollig at gmail.com
>>>> bollig at scs.fsu.edu
>>>> _______________________________________________
>>>> Powered by www.kitware.com
>>>>
>>>> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>>>>
>>>> Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
>>>>
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>>>
>>
>>
>>
>> --
>> -Evan Bollig
>> bollig at gmail.com
>> bollig at scs.fsu.edu
>>
>


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