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

[Dan Lipsa]

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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>>>>
>>>
>>
>
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