[Paraview] VTK embedded models in JSP

[Dani Mora]

Hi again Sebastien,

Thanks for your answer. I attach the code I am going to use in case someone
finds it useful and I will also appreciate suggestions about how to improve
it:

from paraview.simple import *
from paraview.vtk import *
from vtkPVClientServerCoreRenderingPython import *
from vtkPVVTKExtensionsWebGLExporterPython import *

vtkreader = LegacyVTKReader()
vtkreader.FileNames = "model.vtk"

dp = Show(vtkreader)
dp.Representation = 'Points'

elev = Elevation(vtkreader)
pData = elev.PointData[2]
range = pData.GetRange()

dp.LookupTable = MakeBlueToRedLT(range[0],range[1])
dp.ColorArrayName = "Pressure"

renderView = GetRenderView()
# Gradient background
renderView.Background = [0.06274509803921569, 0.06666666666666667,
0.06274509803921569]
renderView.Background2 = [0.4745098039215686, 0.47058823529411764,
0.4745098039215686]
# Object axis invisible
renderView.CenterAxesVisibility = 0

# Export to HTML
view = Render().GetClientSideObject()
exporter = vtkPVWebGLExporter()
exporter.SetFileName("C:\\b.html")
exporter.SetRenderWindow(view.GetRenderWindow())
exporter.Update()

Thanks a lot for your help.

Daniel.

2013/8/1 Sebastien Jourdain <sebastien.jourdain at kitware.com>

> Hi Daniel,
>
> I thought that VTK would contain the WebGL exporter which it doesn't (for
> now). So you are stuck with pvpython for now.
>
> Here is a pvpython script
>
> >>> from paraview.simple import *
>
> >>> from paraview.vtk import *
>
> >>> from vtkPVClientServerCoreRenderingPython import *
>
> >>> from vtkPVVTKExtensionsWebGLExporterPython import *
>
>
> >>> Cone()
> >>> Show()
> >>> view = Render().GetClientSideObject()
>
> >>> exporter = vtkPVWebGLExporter()
>
> >>> exporter.SetFileName("/tmp/index.html")
>
> >>> exporter.SetRenderWindow(view.GetRenderWindow())
>
> >>> exporter.Update()
>
>
>
>
> On Tue, Jul 30, 2013 at 8:04 AM, Dani Mora <daniel.mora.checa at gmail.com>wrote:
>
>> Hi Sebastien,
>>
>> Thanks for your answer. I tried to use the trace but it seems that it
>> does not track the exporting process. I also downloaded and compiled the
>> vtk kit and I could not find the vtkpython module.
>>
>> Dani.
>>
>>
>> 2013/7/24 Sebastien Jourdain <sebastien.jourdain at kitware.com>
>>
>>> 1) pvserver is not a web server. It is meant to run on a cluster for
>>> very large visualization. Which is definitely not what you are looking for.
>>>
>>> 2) The html page is the only file needed for you. The other files were
>>> used for development of custom web page when streaming could be involved.
>>>
>>> Regarding your question about the scripting part, it is definitely
>>> doable but I don't know the step on the top of my head.
>>>
>>> You can try to use the trace and see if that give you the proper python
>>> command for pvpython. Otherwise, you should be able to use vtkpython
>>> without ParaView.
>>>
>>> Seb
>>>
>>>
>>> On Wed, Jul 24, 2013 at 4:24 AM, Dani Mora <daniel.mora.checa at gmail.com>wrote:
>>>
>>>> Hello everybody,
>>>>
>>>> I just started to use Paraview and I got a bit stuck. We have some JSP
>>>> pages where we want to embed and visualize some .vtk models. I considered
>>>> two options at first:
>>>>
>>>> 1- Deploy a server that will render the models. I tried to do that but
>>>> I found that I should compile again Paraview to start the pvserver (to
>>>> enable the MPI). I followed the steps here:
>>>> http://paraview.org/Wiki/ParaView:Build_And_Install but I got some
>>>> compiler errors that I have not been to solve.
>>>>
>>>> 2- Export the .vtk models into webgl (using the Paraview GUI) and embed
>>>> the resulting .html documents as JSP pages . This is the simple approach
>>>> and works so far. Regarding this option, I have two questions:
>>>>
>>>>     - When exporting from vtk to webgl, we get one HTML file, one WebGL
>>>> file and around 20 tiny files with unknown information. Since it works
>>>> using only the HTML one, what are the rest of the files for?
>>>>
>>>>     - I need this task (to export) to be automatized because it is
>>>> possible that we will have many models in the future. I tried to use Python
>>>> scripting but I could not find how to do it.  Any idea about how to do
>>>> it? Is there any documentation I could read? I was thinking of extracting
>>>> this functionality from the source code but I am looking for a 'smarter'
>>>> solution.
>>>>
>>>> Thanks a lot in advance, and sorry if some of the questions are very
>>>> basic.
>>>>
>>>> Daniel.
>>>>
>>>> PS: I am working under Windows as a constraint of the project.
>>>> PS2: I recently found the X Toolkit WebGL (
>>>> https://github.com/xtk/X#readme) that is currently working, but I
>>>> would like to have other options anyway.
>>>>
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>>
>
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