[vtk-developers] Multiple overlapping volumes

[Elvis Stansvik]

2018-02-26 15:52 GMT+01:00 Sebastien Jourdain <sebastien.jourdain at kitware.com>:
> Hi Elvis,
>
> Regarding vtk.js, the video you shared wasn't based on vtk.js. But vtk.js
> does support mix of geometries and a volume. Although, right now, you can
> not mix volumes.

Alright, good to know. I suspected that was the case for VTK.js.

We were interested in mixing volumes. But we're using VTK/C++, so the
news that Alvaros work on this is now merged was very good news.

If we ever try to build something with VTK.js, this would be further
into the future. We'd be interested in mixing volumes there as well.
But hopefully by then something is in place? (perhaps inspired by
Alvaros work?)

Elvis

>
> HTH,
>
> Seb
>
> On Mon, Feb 26, 2018 at 3:23 AM, Elvis Stansvik
> <elvis.stansvik at orexplore.com> wrote:
>>
>> 2018-02-26 10:06 GMT+01:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:
>> > Hi folks,
>> >
>> > I think I asked about support for rendering multiple overlapping
>> > volumes a couple of years ago, but can't find the mail.
>> >
>> > I just came across this wiki page from June last year:
>> >
>> >
>> > https://na-mic.org/wiki/Project_Week_25/Next_Generation_GPU_Volume_Rendering
>> >
>> > It mentions that "Multiple volume support is in development at
>> > Kitware" and lists "Overlapping volumes - multiple inputs to mapper"
>> > under "Work in progress".
>> >
>> > I'm just curious if that work was continued or put on hold.
>>
>> I should have checked Git history before sending this mail. I now found
>>
>>
>> https://gitlab.kitware.com/vtk/vtk/commit/a632f77e3fa955dbf17813a803ddae43a9675021
>>
>> "Added support for multiple volume inputs in GPUVolumeRayCastMapper".
>>
>> This is fantastic news! I shall experiment with it ASAP.
>>
>> Elvis
>>
>> >
>> > I also found
>> > https://www.youtube.com/watch?time_continue=28&v=ML9_JWAz1kY
>> > which shows a proof-of-concept in WebGL (uploaded by Steve Pieper).
>> > Anyone know if the code for that experiment is available? Was it done
>> > using/on top of VTK.js?
>> >
>> > Best regards,
>> > Elvis
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>