[Paraview] Control over camera movement for animations

[Utkarsh Ayachit]

Rupert,

Let me preface this by saying that the camera animation components are
indeed due a update. They haven't been revisited in a long time and I
am sure they could use a major cleanup. It's good to try to accumulate
issues/ feature requests before we take the plunge so we can come up
with a good solution. Thus, when possible and where it makes sense
please feel free to report issues or feature requests on the issue
tracker. I've started putting together this "master" issue. Feel free
to update or add more.

https://gitlab.kitware.com/paraview/paraview/issues/18125

In general, everything you state are indeed limitations of the current
implementation and not something you missed.

We'd certainly love to see the results you generate when you're done.
It sounds quite cool.

Utkarsh

> When I use the "follow path" option it does not seem to be possible to
> adjust the "up direction" within a path.  I can have a different "up
> direction" in subsequent paths within one animation, but the jump between up
> directions is abrupt.  Are there any plans to allow up direction to change
> as a path is followed?  Is there a way to smooth the jump between subsequent
> paths with a different up direction?
> With the "follow path" option there doesn't seem to be any way of using the
> current camera view like in the "Interpolate camera locations" option.  Is
> this possible?  Is it likely to be implemented in the future?  Even if the
> "up direction" information for the current camera view is lost I would still
> find such a functionality useful.
> If I want a new path to start or finish at the same place as a previous path
> then I have to open the window for the previous path, copy one of the
> coords, close the window, open the window for the new path, paste the coord,
> then repeat for all other coords.  This is a lot of point-and-clicking.  Is
> there a way to short cut this?  For example having 2 path windows open
> concurrently would be a help, or being able to create a new path as a copy
> of a previous path would be even better.
>
> When I use "Interpolate camera locations" there seems to be quite a long
> slow overshoot.  I guess Paraview is doing some kind of spline
> interpolation.  Is there a way to stop it doing this?  Simple linear
> interpolation between locations would be just fine for my purposes.  My
> current approach to minimise this overshoot is to copy my target location
> several times in close temporal proximity.  e.g. if I want to move from
> position A at the start to position B after 10 seconds, then stay at
> position B, my current approach is to repeat position B at 10, 10.5 and 11
> seconds.  This isn't perfect but it is a manageable workaround.
>
> I REALLY like the ability to use the current camera view when setting up
> camera locations for interpolation.
>
> BTW I am making animations for a public lecture on Antarctic ice sheet
> modelling.  If you want to see what I come up with let me know, I'll be
> happy to share.
>
> Regards,
> Rupert
>
> -----------------------------------------------------------------------------------------------
> Rupert Gladstone, PhD
> Antarctic Ice Sheet researcher, University of Lapland
> https://groups.google.com/d/forum/fisoc
> https://lacris.ulapland.fi/en/persons/rupert-gladstone(21a10f7f-3ea9-4c06-b9a4-320eb4ca8e29).html
> https://scholar.google.com.au/citations?user=FNgAsPkAAAAJ
> http://www.researcherid.com/rid/C-1086-2013
> -----------------------------------------------------------------------------------------------
>
> _______________________________________________
> 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
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
> Follow this link to subscribe/unsubscribe:
> https://public.kitware.com/mailman/listinfo/paraview
>