[Paraview] Paraview 4.3.1 Python - Screenshot of specific size and ratio

[Ruggiero Guida]

Attached. Thanks for checking.

On 11 September 2015 at 09:34, Dan Lipsa <dan.lipsa at kitware.com> wrote:

> If you send me your test.vtk I can try to generate the script on my
> machine.
>
> Dan
>
>
> On Thu, Sep 10, 2015 at 9:10 PM, Ruggiero Guida <ruggiero.guida at gmail.com>
> wrote:
>
>> I am using the 4.3.1 binary version downloaded from the website. I
>> generated my script starting from the trace as you suggest. Uncommenting
>> the ViewSize on your script works. The fact is that it does not work on
>> mine and i really don't understand why. I guess it is related to the
>> settings of the camera.
>>
>> Have you tried to run my script on your machine? I would expect to have a
>> square image with the data fitted perfectly into it, but as soon as I
>> increase the ViewSize above 855x855, only the horizontal size increases. As
>> you can see from the VTK the source data is 24x24.
>>
>> Thanks
>>
>>
>>
>> On 11 September 2015 at 08:51, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>>
>>> What version of ParaView do you use? I run the script on a ParaView
>>> source build from git master.
>>>
>>>
>>> You should be able to do Tools / Start Trace, open your file and then
>>> save it to the desired resolution. The script generated should tell you
>>> what settings you need. You might need to uncomment the setting of the
>>> ViewSize. This is what I had to do.
>>>
>>> On Thu, Sep 10, 2015 at 6:41 PM, Ruggiero Guida <
>>> ruggiero.guida at gmail.com> wrote:
>>>
>>>> Thanks Dan.
>>>>
>>>> The image saved is 648 x 639 (see attached). What I am not
>>>> understanding is the relation between ViewSize, camera settings and actual
>>>> image size in pixels.
>>>>
>>>> I would like to use paraview to render some textures that I will be
>>>> using in my code and I need the image ti fit perfectly the content.
>>>>
>>>> On 10 September 2015 at 23:19, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>>>>
>>>>> Ruggiero,
>>>>> The following script saves a 100x100 sphere.
>>>>> I created it using the trace option in ParaView.
>>>>>
>>>>>
>>>>> On Thu, Sep 10, 2015 at 5:07 AM, Ruggiero Guida <
>>>>> ruggiero.guida at gmail.com> wrote:
>>>>>
>>>>>> I am trying to create a screenshot of a specific size from a [VTK
>>>>>> file][1].
>>>>>> This is the code I am using
>>>>>>
>>>>>>     from paraview.simple import *
>>>>>>     paraview.simple._DisableFirstRenderCameraReset()
>>>>>>     rad_map = LegacyVTKReader(FileNames=['test.vtk'])
>>>>>>
>>>>>>     # get active view
>>>>>>     renderView1 = GetActiveViewOrCreate('RenderView')
>>>>>>     dpi = 70
>>>>>>     heigth = 24.39846235421442
>>>>>>     width = 24.398462354214413
>>>>>>     width_p = int(width * dpi)
>>>>>>     heigth_p = int(heigth * dpi)
>>>>>>     renderView1.ViewSize = [width_p, heigth_p]
>>>>>>
>>>>>>     # reset view to fit data
>>>>>>     #renderView1.ResetCamera()
>>>>>>
>>>>>>     # current camera placement for renderView1
>>>>>>     renderView1.CameraParallelProjection = 1
>>>>>>     renderView1.CameraPosition = [5, 5, 1000]
>>>>>>     renderView1.CameraFocalPoint = [5, 5, 0.0]
>>>>>>     renderView1.CameraViewUp = [0.0, 1.0, 0.0]
>>>>>>     scale = (heigth) / 2.0
>>>>>>     renderView1.CameraParallelScale = scale
>>>>>>
>>>>>>     Render()
>>>>>>     SaveScreenshot("/Users/ruggiero/dev/test.png", magnification=1)
>>>>>>
>>>>>> The problem is that the `ViewSize` seems to be ignored and I keep
>>>>>> having images of fixed size 1707 × 855. The height 855 seems to be a kind
>>>>>> of limit; the only way to get what I want is to limit the `ViewSize` to
>>>>>> 855x855.
>>>>>>
>>>>>> I have checked [this][2] question and [this][3] question, but with no
>>>>>> success.
>>>>>>
>>>>>> Any idea? I am not very confident in the settings for the camera.
>>>>>> Could this be the issue?
>>>>>>
>>>>>>
>>>>>>   [1]: https://dl.dropboxusercontent.com/u/1342856/test.vtk
>>>>>>   [2]:
>>>>>> http://stackoverflow.com/questions/31930448/in-python-script-for-paraview-can-i-specify-the-resolution-when-i-do-a-savescre
>>>>>>   [3]:
>>>>>> http://stackoverflow.com/questions/27430588/paraview-python-command-to-save-picture-of-defined-size
>>>>>>
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>>>>>> Please keep messages on-topic and check the ParaView Wiki at:
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>>>>>>
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>>>>>>
>>>>>
>>>>
>>>
>>
>
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