[vtkusers] Add multiple vtkVolume in vtkAssembly

Wed Nov 25 22:58:03 EST 2015

Hi Aashish,

Thanks a lot for your help.

I have added in the code snippet that you have provided but yet the problem
still persists.
Any idea how??

Thanks a lot for your much needed helps.
Vincent

On Thu, Nov 26, 2015 at 11:41 AM, Aashish Chaudhary-2 [via VTK] <
ml-node+s1045678n5735207h26 at n5.nabble.com> wrote:

> Hi Vincent,
>
> Thanks for the feedback. If they are not overlapping in physical space
> then you can do something like this (basically turn on the SortingStyle to
> BackToFront)
>
>  ren1->GetCullers()->InitTraversal();
>   vtkCuller *culler=ren1->GetCullers()->GetNextItem();
>
>   vtkFrustumCoverageCuller
> *fc=vtkFrustumCoverageCuller::SafeDownCast(culler);
>   if(fc!=0)
>     {
>     fc->SetSortingStyleToBackToFront();
>     }
>   else
>     {
>     cout<<"culler is not a vtkFrustumCoverageCuller"<<endl;
>     }
>
>
>
>
> On Wed, Nov 25, 2015 at 9:56 PM, vincentTan <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5735207&i=0>> wrote:
>
>> Hi Aashish,
>>
>> Thanks a lot for your helps. It works but if possible, is there any
>> solution for the see through effect below:
>> [image: Inline image 2]
>>
>> FYI, i have added another vtkVolumeMapper and vtkVolume using the same
>> source in your code. However, as you have seen it in the image, at certain
>> angle where both of the objects are overlapped, you could see that the
>> object located behind could be seen through. In addition, the object in
>> front is the second vtkVolume that is created and added into vtkAssembly.
>>
>> Thanks a lot. Appreciate your great helps.
>> Vincent
>>
>> On Thu, Nov 26, 2015 at 9:34 AM, Vincent Tan Sin Chia <[hidden email]
>> <http:///user/SendEmail.jtp?type=node&node=5735205&i=0>> wrote:
>>
>>> Hi Aashish,
>>>
>>> Thanks a lot for your help.
>>> Will get back to you once i tested it out.
>>>
>>> Thanks a lot.
>>> Vincent
>>>
>>> On Thu, Nov 26, 2015 at 8:51 AM, Aashish Chaudhary-2 [via VTK] <[hidden
>>> email] <http:///user/SendEmail.jtp?type=node&node=5735205&i=1>> wrote:
>>>
>>>> Hi Vincent,
>>>>
>>>> I modified one of the test (attached) and tried vtkAssembly and it
>>>> worked for me on Ubuntu 14.* using OpenGL2 backend. Can you try this test
>>>> and see if it works for you as well? If you using OpenGL1 backend, I would
>>>> hope it should work as well since I believe vtkAssembly code has not
>>>> changed as much.
>>>>
>>>> Thanks,
>>>>
>>>>
>>>> On Wed, Nov 25, 2015 at 6:50 PM, vincentTan <[hidden email]
>>>> <http:///user/SendEmail.jtp?type=node&node=5735203&i=0>> wrote:
>>>>
>>>>> Hi Aashish,
>>>>>
>>>>> Thanks a lot for your reply.
>>>>> Ya, i am trying to render multiple volumes in one go. In my case, i
>>>>> would
>>>>> like to have two or possibly more vtkVolume in a vtkAssembly so that a
>>>>> global transformation on them would be applied as to treat those
>>>>> volumes as
>>>>> one unit.
>>>>>
>>>>> Besides, I have one class designed to keep track of each individual
>>>>> volume
>>>>> with its vtkImageData, vtkVolumeMapper as well as vtkVolumeProperty. In
>>>>> addition, as for vtkAssembly, i just simply add the volumes using
>>>>> assembly->addPart(subvol.getVolume()) but nothing comes out.
>>>>>
>>>>> Thanks a lot.
>>>>> Vincent
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>> http://vtk.1045678.n5.nabble.com/Add-multiple-vtkVolume-in-vtkAssembly-tp5735182p5735201.html
>>>>> Sent from the VTK - Users mailing list archive at Nabble.com.
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>>>>
>>>>
>>>>
>>>> --
>>>>
>>>>
>>>>
>>>> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.
>>>>   *
>>>> *| http://www.kitware.com/company/team/chaudhary.html
>>>> <http://www.kitware.com/company/team/chaudhary.html>*
>>>>
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>>>> *TestGPUVolumeRayCastMapper.cxx* (3K) Download Attachment
>>>> <http://vtk.1045678.n5.nabble.com/attachment/5735203/0/TestGPUVolumeRayCastMapper.cxx>
>>>>
>>>>
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>>>
>>>
>>
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>> View this message in context: Re: Add multiple vtkVolume in vtkAssembly
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>
>
> --
>
>
>
> *| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
> *| http://www.kitware.com/company/team/chaudhary.html
> <http://www.kitware.com/company/team/chaudhary.html>*
>
> _______________________________________________
> Powered by www.kitware.com
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Source1.cpp (5K) <http://vtk.1045678.n5.nabble.com/attachment/5735208/0/Source1.cpp>

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