[Paraview] patch for 9485 Save camera position

Utkarsh Ayachit utkarsh.ayachit at kitware.com
Wed Feb 10 11:46:51 EST 2010 

Burlen,

That's really cool. I like the the notion of "configuration", but I
have a few questions. What can't configuration merely be a subset of
the state i.e. same as the state xml for that proxy  except with only
the required properties? The main advantage will be that we don't have
another serialization "format" to handle. Plus, you can directly use
the state loading infrastructure to load the configuration without
having to write the configuration loader classes.

Also, one of the reasons for the existence
vtkSMProxyConfigurationManager seems to be the fact that state loading
results in creating of new proxies, but then, that's not necessarily
true. State can be loaded on existing proxies as well -- we do that
for undo-redo. The trick is provide the right vtkSMProxyLocator (or a
subclass) (if I remember correctly).

What do you think?

Utkarsh

On Mon, Jan 25, 2010 at 2:40 AM, burlen <burlen.loring at gmail.com> wrote:
> Sorry to resend this, but the attachments were too big for the list. I put
> them here: http://nashi-submaster.ucsd.edu/movies/PV/save-cam-config/
>
>
> Hi all,
>
> The attached patch is for fetaure 9485 Save camera position(
> http://public.kitware.com/Bug/view.php?id=9485 ) . This solution
> provides a way of converting the camera configuration into an XML stream
> which can then be either: stored in PV's internal settings to be later
> accessed by one of 4 camera dialog buttons; or written to a file to be
> later read back in. I attached screen shots of the modified camera
> dialog and custom view button configuration dialog so you can take a
> quick look and see what this is all about. Is this something I can
> commit as is? If not what needs to change?
>
> A little about the implementation follows and I'd like to propose adding
> a related feature, the ability to individually save and load
> configuration of PV's geomtry sources (point, line, plane, sphere etc...).
>
> Saving and loading the camera configuration is a special case of a more
> general missing feature, that of saving and loading a subset of an
> individual proxy's properties. I am calling this configuration.
> Something like state but much simpler, lighter and more portable. With
> that in mind, rather than make a one off camera configuration
> reader/writer, I took a more general approach in my solution and
> implemented camera configuration reader/writer pair from abstract "proxy
> configuration" reader/writer base classes. A simple way to use these
> proxy configuration classes is to implement a derived class, and in the
> constructor initialize the list of properties that will comprise the
> configuration. The base classes can then handle the validation and IO of
> the XML hierarchy. Using these classes one could also do something
> similar to save and load any subset of any proxy's vector properties
> pretty easily.
>
> My intentions is that configuration can step in for state in the cases
> where state is overkill, or doesn't work. For instance when trying to
> reproduce a figure on a different cluster the most crucial aspects are
> often the  positioning of geometric sources and the camera. these are
> also often the most difficult to recreate by hand since they require
> precise positioning. unlike state, configuration is not tied to a
> specific cluster or connection. It also provides a quick way to
> duplicate a source in the same session. A configuration file depends
> only on a single proxy minimizing the risk of backward incompatibility
> over time.
>
> the gist of the approach I have in mind to expose this functionality for
> PV's geometry sources  would be by way of a qt widget containing a load
> and a save button placed in the object inspector auto generated panels.
> The widget would only be added if the SM XML requested it. The XML would
> be something like this:
> <SourceProxy ...>
> ...
> <ConfigurationManagerProperty>
>  <PropertyDomain name="managed_properties" values="..."
> </ConfigurationManagerProperty>
> ...
> </SourceProxy>
> The XML would be added to each of the geometry sources. The properties
> that make up the configuration of an individual source would be
> explicitly listed in the managed_properties attribute and passed into
> the geometry source configuration reader/writer objects which would be
> derived from vtkSMProxyConfigurationReader/Writer in the attached patch.
>
> Is this going to be a committable feature? Comments and feedback are
> much appreciated. I know its a really small feature, but I think it will
> improve the user's experience, and resolve some frustrations with state.
>
> Thanks
> Burlen
>
>
> Scott, W Alan wrote:
>>
>> I just wrote this one up as bug number 9805.  We really should have this
>> functionality in ParaView.
>>
>> Thanks for catching this one.
>>
>> Alan
>>
>>>
>>> -----Original Message-----
>>> From: paraview-bounces at paraview.org
>>> [mailto:paraview-bounces at paraview.org] On Behalf Of Utkarsh Ayachit
>>> Sent: Friday, October 30, 2009 4:25 AM
>>> To: Bam Ting
>>> Cc: Bastil2001 at yahoo.de; ParaView
>>> Subject: Re: [Paraview] Save camera setting paraview 3.6.1
>>>
>>> I agree. We lost this functionality in transition to ParaView 3.0 from
>>> 2.6. Please feel free to add it to the bug tracker so that we consider it
>>> for the next major release.
>>>
>>> Utkarsh
>>>
>>> On Wed, Oct 28, 2009 at 6:35 PM, Bam Ting <bampingting at gmail.com> wrote:
>>>
>>>>
>>>> Why no option to save/restore a camera state by click a
>>>
>>> button? I want
>>>>
>>>> use this many time!! My feeling--It a little silly to make us use a
>>>> python feature for idea so basics.
>>>>
>>>>
>>>> On Wed, Oct 28, 2009 at 11:26 AM, Bastil2001 at yahoo.de
>>>> <Bastil2001 at yahoo.de>
>>>> wrote:
>>>>
>>>>>
>>>>> Thanks. However, since I have Paraview 3.6.1 this is not
>>>
>>> possible for
>>>>>
>>>>> me. Maybe I will have to switch since this python state
>>>
>>> files seem to
>>>>>
>>>>> be very helpful. What is the difference betwwen the curren
>>>
>>> cvs and 3.6.2?
>>>
>>>>>
>>>>> Thanks.
>>>>>
>>>>> BastiL
>>>>>
>>>>> pat marion schrieb:
>>>>>
>>>>>>
>>>>>> Try this (assuming you have paraview cvshead or 3.6.2):
>>>>>>
>>>>>> build your pipeline
>>>>>> open python dialog
>>>>>> click on trace tab
>>>>>> click start trace
>>>>>> move the camera how you want it
>>>>>> click stop trace
>>>>>> click save trace
>>>>>> click on the directory view tab, you should see a new python script,
>>>>>> you can select it and click Run Selected
>>>>>>
>>>>>> Pat
>>>>>>
>>>>>> On Wed, Oct 28, 2009 at 2:12 PM, Bastil2001 at yahoo.de
>>>>>> <Bastil2001 at yahoo.de> wrote:
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> Maybe - however I do not know how to get the trace and
>>>
>>> what to do
>>>>>>>
>>>>>>> with the output?
>>>>>>>
>>>>>>> Regards
>>>>>>>
>>>>>>> BastiL
>>>>>>>
>>>>>>> Adriano Gagliardi schrieb:
>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>> Does the trace functionality not output the camera
>>>
>>> settings for
>>>>>>>>
>>>>>>>> you in python?
>>>>>>>>
>>>>>>>>
>>>>>>>> ===================================
>>>>>>>>
>>>>>>>> Adriano Gagliardi MEng PhD
>>>>>>>> Project Scientist
>>>>>>>> Computational Aerodynamics
>>>>>>>> Aircraft Research Association Ltd.
>>>>>>>> Manton Lane
>>>>>>>> Bedford
>>>>>>>>
>>>>>>>> Tel: 01234 32 4644
>>>>>>>> E-mail: agagliardi at ara.co.uk
>>>>>>>> Url: www.ara.co.uk
>>>>>>>> -----Original Message-----
>>>>>>>> From: paraview-bounces at paraview.org
>>>>>>>> [mailto:paraview-bounces at paraview.org]
>>>>>>>> On Behalf Of Bastil2001 at yahoo.de
>>>>>>>> Sent: 28 October 2009 17:38
>>>>>>>> To: 'ParaView'
>>>>>>>> Subject: [Paraview] Save camera setting paraview 3.6.1
>>>>>>>>
>>>>>>>> This has been discussed some time before but I have no
>>>
>>> solution
>>>>>>>>
>>>>>>>> so far.
>>>>>>>> I think lookmarks are intended to do this, right?
>>>
>>> However, for me
>>>>>>>>
>>>>>>>> they always re-create certain parts of the pipe and I
>>>
>>> only want
>>>>>>>>
>>>>>>>> to restore a view. How can this be done? Thanks.
>>>>>>>>
>>>>>>>> BastiL
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