[vtkusers] volume rendering and animation

[Kenji Tsumura]

Hi Aashish,

Thank you for your replay.

> You mean when you go to the next time-step? (not sure what you are referring to actor's change)
Yes

> Are you creating vtkVolume for each timestamp or do you have only one that you are trying to re-use?
I created vtkVolume for each timestamp.

Kenji

From: Aashish Chaudhary [mailto:aashish.chaudhary at kitware.com]
Sent: Monday, December 07, 2015 10:11 AM
To: Kenji Tsumura
Cc: vtkusers at vtk.org
Subject: Re: [vtkusers] volume rendering and animation

Hi Kenji

On Mon, Dec 7, 2015 at 10:46 AM, Kenji Tsumura <kenji.tsumura at neosoftmedical.com<mailto:kenji.tsumura at neosoftmedical.com>> wrote:
Hello,

I have 3D cardiac MRI data (4D including time domain). I can display volume rendering of the data using vtkSmartVolumeMapper.
When I tried to do animation (CINE) by  changing actors every time TimerEvent occurs, it is slow (using CPU or GPU).
Even when there is no user interaction, vtk seems to perform volume rendering every time actors change.

You mean when you go to the next time-step? (not sure what you are referring to actor's change)

Are there any way for vtk to not perform volume rendering every time actors change by caching or something?

If I understand your problem, no there is no direct way. If you have multiple vtkVolume, and you are not going over the video memory limit, atleast, data transfer shouldn't happen every time. Are you creating vtkVolume for each timestamp or do you have only one that you are trying to re-use?

I was wondering if vtkMultiBlockDataSet or vtkTemporal*** can be utilized, but was unable to find a solution.

Thank you,

--
Kenji Tsumura

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--
| Aashish Chaudhary
| Technical Leader
| Kitware Inc.
| http://www.kitware.com/company/team/chaudhary.html
Disclaimer: The information contained in this communication may be confidential, is intended only for the use of the recipient(s) named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited. If you have received this communication in error, please return it to the sender immediately and delete the original message and any copy of it from your computer system. If you have any questions concerning this message, please contact the sender.
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