[vtkusers] Save vtkChartXY to PNG
Jakub Poła
jakub.pola at gmail.com
Thu Oct 25 03:34:21 EDT 2012
Hello Alex,
I found as well the OffScreenRendering option. To make it work I had to
install osmesa (8.0.4 Ubuntu 12.04) and compile paraview 3.14-1 with
option VTK_OPENGL_HAS_OSMESA set to ON.
Then in my code I have following set of instructions:
vtkSmartPointer<vtkGraphicsFactory> graphics_factory =
vtkSmartPointer<vtkGraphicsFactory>::New();
graphics_factory->SetOffScreenOnlyMode( 1);
graphics_factory->SetUseMesaClasses( 1 );
vtkSmartPointer<vtkImagingFactory> imaging_factory =
vtkSmartPointer<vtkImagingFactory>::New();
imaging_factory->SetUseMesaClasses( 1 );
VTK_CREATE(vtkRenderWindow, renderWindow);
renderWindow->AddRenderer(view->GetRenderer());
renderWindow->SetOffScreenRendering(1);
renderWindow->Render();
VTK_CREATE(vtkWindowToImageFilter, windowToImageFilter);
windowToImageFilter->SetInput(renderWindow);
windowToImageFilter->Update();
VTK_CREATE(vtkPNGWriter, pngWriter);
pngWriter->SetFileName("ble.png");
pngWriter->SetInput(windowToImageFilter->GetOutput());
pngWriter->Write();
When program reach instruction renderWindow->Render, the segmentation
fault occurs. It is caused by code from vtkOpenGLExtensionManager.
First one is at the line 567 (version is NULL):
const char *version =
reinterpret_cast<const char *>(glGetString(GL_VERSION));
Version seems to be NULL therefore I applied patch according to this bug
description:
http://paraview.org/Bug/bug_relationship_graph.php?bug_id=8554&graph=relation
Then segmentation fault comes from vtkOpenGLContextDevice2D::LoadExtensions
const char *gl_version =
reinterpret_cast<const char *>(glGetString(GL_VERSION));
const char *mesa_version = strstr(gl_version, "Mesa");
if (mesa_version != 0)
{
supported = false;
}
}
this time gl_version is NULL:
Does anyone having similar behaviour. Am I missing something?
I've attached glxinfo -s log if someone is curious, and my version of
system is Ubuntu 12.04:
Linux 3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:33:09 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux
Thank you in advance for any help.
Jakub
On 10/25/2012 03:39 AM, Alex Malyushytskyy wrote:
> Actually I take it back, I am not sure this would work when system is
> not able to support X11.
>
> Alex
>
> On Wed, Oct 24, 2012 at 6:33 PM, Alex Malyushytskyy
> <alexmalvtk at gmail.com> wrote:
>> You can forcevtk use an offscreen rendering:
>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Utilities/OffScreenRendering
>>
>> Alex
>>
>> On Wed, Oct 24, 2012 at 6:29 AM, Jakub Poła <jakub.pola at gmail.com>
wrote:
>>>
>>> Thank you for your help Jothy. This filter is working but I have to
create
>>> renderWindow and call at least once Render() method to obtain
proper output
>>> data from vtkWindowToImageFilter. I would like to omit render
window and go
>>> directly from vtkChartXY to PNG ( Let assume that there is no X11
support
>>> on the machine where program will work), but I suppose that it is not
>>> possible easily.
>>>
>>>
>>>
>>>
>>> On 10/24/2012 01:55 PM, Jothybasu Selvaraj wrote:
>>>>
>>>> Here you go
>>>>
>>>> vtkSmartPointer<vtkWindowToImageFilter> windowToImageFilter =
>>>> vtkSmartPointer<vtkWindowToImageFilter>::New();
>>>> windowToImageFilter->SetInput(this->view->GetRenderWindow());
>>>> windowToImageFilter->Update();
>>>>
>>>>
>>>> vtkSmartPointer<vtkPNGWriter> writer =
>>>> vtkSmartPointer<vtkPNGWriter>::New();
>>>> writer->SetFileName("FileName");
>>>> writer->SetInput(windowToImageFilter->GetOutput());
>>>> writer->Write();
>>>>
>>>> Jothy
>>>>
>>>> On Wed, Oct 24, 2012 at 12:52 PM, Jakub Poła
<jakub.pola at gmail.com> wrote:
>>>>>
>>>>> Good Morning,
>>>>>
>>>>> I have question related to create charts in vtk. Is it possible
to save
>>>>> chart as png image without creating the snapshot of window like in
>>>>> paraview?
>>>>> I would like to write a batch program which aims to analyze large
data
>>>>> set
>>>>> and creates series of charts.
>>>>> I have vtkTable feeded by the vtkExtractArraysOverTime filter, then
>>>>> basing
>>>>> on this table I would like to create chart object which I would
like save
>>>>> as
>>>>> PNG image.
>>>>>
>>>>> Thank you very much for your support.
>>>>> Jakub
>>>>>
>>>>> --
>>>>> Pozdrawiam,
>>>>> Jakub Poła
>>>>>
>>>>> _______________________________________________
>>>>> 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:
>>>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>>>
>>>>> Follow this link to subscribe/unsubscribe:
>>>>> http://www.vtk.org/mailman/listinfo/vtkusers
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Pozdrawiam,
>>> Jakub Poła
>>>
>>> _______________________________________________
>>> 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:
>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.vtk.org/mailman/listinfo/vtkusers
> _______________________________________________
> 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:
http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
--
Pozdrawiam,
Jakub Poła
On 10/25/2012 03:39 AM, Alex Malyushytskyy wrote:
> Actually I take it back, I am not sure this would work when system is
> not able to support X11.
>
> Alex
>
> On Wed, Oct 24, 2012 at 6:33 PM, Alex Malyushytskyy
> <alexmalvtk at gmail.com> wrote:
>> You can forcevtk use an offscreen rendering:
>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Utilities/OffScreenRendering
>>
>> Alex
>>
>> On Wed, Oct 24, 2012 at 6:29 AM, Jakub Poła <jakub.pola at gmail.com> wrote:
>>> Thank you for your help Jothy. This filter is working but I have to create
>>> renderWindow and call at least once Render() method to obtain proper output
>>> data from vtkWindowToImageFilter. I would like to omit render window and go
>>> directly from vtkChartXY to PNG ( Let assume that there is no X11 support
>>> on the machine where program will work), but I suppose that it is not
>>> possible easily.
>>>
>>>
>>>
>>>
>>> On 10/24/2012 01:55 PM, Jothybasu Selvaraj wrote:
>>>> Here you go
>>>>
>>>> vtkSmartPointer<vtkWindowToImageFilter> windowToImageFilter =
>>>> vtkSmartPointer<vtkWindowToImageFilter>::New();
>>>> windowToImageFilter->SetInput(this->view->GetRenderWindow());
>>>> windowToImageFilter->Update();
>>>>
>>>>
>>>> vtkSmartPointer<vtkPNGWriter> writer =
>>>> vtkSmartPointer<vtkPNGWriter>::New();
>>>> writer->SetFileName("FileName");
>>>> writer->SetInput(windowToImageFilter->GetOutput());
>>>> writer->Write();
>>>>
>>>> Jothy
>>>>
>>>> On Wed, Oct 24, 2012 at 12:52 PM, Jakub Poła <jakub.pola at gmail.com> wrote:
>>>>> Good Morning,
>>>>>
>>>>> I have question related to create charts in vtk. Is it possible to save
>>>>> chart as png image without creating the snapshot of window like in
>>>>> paraview?
>>>>> I would like to write a batch program which aims to analyze large data
>>>>> set
>>>>> and creates series of charts.
>>>>> I have vtkTable feeded by the vtkExtractArraysOverTime filter, then
>>>>> basing
>>>>> on this table I would like to create chart object which I would like save
>>>>> as
>>>>> PNG image.
>>>>>
>>>>> Thank you very much for your support.
>>>>> Jakub
>>>>>
>>>>> --
>>>>> Pozdrawiam,
>>>>> Jakub Poła
>>>>>
>>>>> _______________________________________________
>>>>> 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:
>>>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>>>
>>>>> Follow this link to subscribe/unsubscribe:
>>>>> http://www.vtk.org/mailman/listinfo/vtkusers
>>>>
>>>>
>>>
>>> --
>>> Pozdrawiam,
>>> Jakub Poła
>>>
>>> _______________________________________________
>>> 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:
>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.vtk.org/mailman/listinfo/vtkusers
> _______________________________________________
> 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: http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
--
Pozdrawiam,
Jakub Poła
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