[vtkusers] About the example--vtk for iOS VolumeRender

[Aashish Chaudhary]

Hi can you send me your data and your changes may be?

- Aashish

On Wed, Nov 18, 2015 at 10:57 PM, 邓卓夫 <dzfowen at qq.com> wrote:

> Hello developers,
>
>       Following your instructions, the VolumeRender can read the nrrd
> file, but when I run the program it came out 2 errors:
>
>       *ERROR: In
> /Users/dzf/Desktop/VTK/Rendering/OpenGL2/vtkOpenGLPolyDataMapper2D.cxx,
> line 850*
>
> *vtkOpenGLPolyDataMapper2D (0x7fe288f404a0): failed after RenderOverlay 1
> OpenGL errors detected*
>
> *  0 : (1286) Unknown error*
>
>
>
> *ERROR: In /Users/dzf/Desktop/VTK/Rendering/OpenGL2/vtkTextureObject.cxx,
> line 554*
>
> *vtkTextureObject (0x7fe28988f530): failed at glBindTexture(0) 1 OpenGL
> errors detected*
>
> *  0 : (1286) Unknown error*
>
>     Wait maybe 20 seconds, the app can run and the model can display but
> interaction has almost no reaction, especially the 3d image quality is very
> low, all of these are not accepted and dislike the demo vedio on the web.
> So  why the result is very bad and there are two errors. I did not modify
> the original code, some difference is I only convert the nrrd file into
> unsigned char type not modify the resolution as I did not know how to use
> 3d slicer very well.
>
>     Thank you for your helps!
>
> Bob
> ------------------ 原始邮件 ------------------
> *发件人:* "Aashish Chaudhary";<aashish.chaudhary at kitware.com>;
> *发送时间:* 2015年11月19日(星期四) 凌晨2:57
> *收件人:* "Cory Quammen"<cory.quammen at kitware.com>;
> *抄送:* "邓卓夫"<dzfowen at qq.com>; "vtkusers"<vtkusers at vtk.org>;
> *主题:* Re: [vtkusers] About the example--vtk for iOS VolumeRender
>
> You can ignore the second error that just resulted from the fact that
> reader failed to load the file. If you follow Cory's suggestion, hopefully
> it will work for you.
>
> Thanks,
>
>
> On Wed, Nov 18, 2015 at 1:06 PM, Cory Quammen <cory.quammen at kitware.com>
> wrote:
>
>> The VTK Nrrd reader may not be able to read compressed NRRD files. Try to
>> convert it to a non-compressed NRRD file by opening it in Slicer and then
>> saving it with the compression option turned off.
>>
>> - Cory
>>
>> On Wed, Nov 18, 2015 at 12:03 PM, 邓卓夫 <dzfowen at qq.com> wrote:
>>
>>> Hi developers,
>>>
>>>     I try to build the latest vtk for iOS example VolumeRender,
>>> compiling is ok. However when I run the project with the data
>>> file CT-chest.nrrd which is downloaded from 3D slicer web and converted
>>> into 8 unsigned char and 256*256*130 format, the Xcode came out 2 errors:
>>>
>>>        *ERROR: In /Users/dzf/Desktop/VTK/IO/Image/vtkNrrdReader.cxx,
>>> line 337*
>>>
>>> *vtkNrrdReader (0x7f9e8b821370): CT-chest.nrrd is not a nrrd file.*
>>>
>>>
>>> *     ERROR: In
>>> /Users/dzf/Desktop/VTK/Common/ExecutionModel/vtkExecutive.cxx, line 784*
>>>
>>> *vtkCompositeDataPipeline (0x7f9e8b821e50): Algorithm
>>> vtkNrrdReader(0x7f9e8b821370) returned failure for request: vtkInformation
>>> (0x7f9e8b823530)*
>>>
>>> *  Debug: Off*
>>>
>>> *  Modified Time: 8501*
>>>
>>> *  Reference Count: 1*
>>>
>>> *  Registered Events: (none)*
>>>
>>> *  Request: REQUEST_INFORMATION*
>>>
>>> *  FORWARD_DIRECTION: 0*
>>>
>>> *  ALGORITHM_AFTER_FORWARD: 1*
>>>
>>>
>>> 1 error: why Xcode assumed that the file is not nrrd file, it is strange
>>> maybe I had mistakes to convert the original nrrd file into proper one with
>>> 3d Slicer?
>>>
>>>
>>> 2 error:I can not understand.
>>>
>>>
>>> Thanks for your reply!
>>>
>>>
>>>   Bob
>>>
>>>
>>>
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>>>
>>
>>
>> --
>> Cory Quammen
>> R&D Engineer
>> Kitware, Inc.
>>
>> _______________________________________________
>> 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 VTK FAQ at:
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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>*
>



-- 



*| 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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