Pat,
Thanks for the explanation on the proper import and how to get at the
local render window. With your help I was able to do what I wanted.
I'm not a Paraview user, but I am supporting someone that is and he
needed a way to get good looking .ps files out of Paraview. So after
some initial reading I thought I would write a plugin, then I stumbled
across using the python shell. Then I figured working with vtk objects
directly through the shell might be the quickest way to get it done.
I might now look into writing the proxy xml definition as you suggested.
Once I follow the example that you pointed me to, does Paraview need to
be recompiled once I put my new proxy xml definition in place and if so
do I need to stick it in a specific place, such as the utilities.xml you
pointed out? Or can my xml be sort of be loaded dynamically through
Paraview's plugin manager as long as I build Paraview with shared libs on?
Thanks Again for Your Help,
Marcin
On 06/17/2010 03:03 PM, pat marion wrote:
Hi,
If you look at paraview's vtk/__init__.py, you'll see:
from libvtkRenderingPython import vtkCamera
So that is why vtk.vtkGL2PSExporter() doesn't work- the complete
vtkRendering kit has not been imported. You could do this:
from libvtkRenderingPython import vtkGL2PSExporter
exporter = vtkGL2PSExporter()
or
import libvtkRenderingPython as vtkrendering
exporter = vtkrendering.vtkGL2PSExporter()
If you are running this in the paraview gui, you can get the local
render window (vtkRenderWindow) by calling:
view = GetActiveView().GetRenderWindow()
You should understand that you are working directly with vtk objects
here. The paraview way to handle this is to write a proxy xml
definition for the GL2PS exporter. You can see an example by
searching for VRMLExporter in
Servers/ServerManager/Resources/utilities.xml Then your script might
be something like:
exporters = servermanager.createModule("exporters")
exp = exporters.GL2PSExporter(FileName="/tmp/foo.ps <http://foo.ps>")
exp.View = GetActiveView()
exp.Write()
Pat
On Thu, Jun 17, 2010 at 2:26 PM, Marcin Sliwowski <[email protected]
<mailto:[email protected]>> wrote:
Hello Peter,
I was king of hoping you would reply, I actually saw that post and
your method of instantiating an object on vtkGL2PSExporter does
work after I do a from paraview.vtk import *
from paraview.vtk import *
exp = vtkInstantiator.CreateInstance("vtkGL2PSExporter")
I have tried exp.Write() but I get an error indicating:
vtkGL2PSExporter: No render windows provided
Then I did a couple of stabs in the dark with
vtk.vtkRenderWindow() to try an get a Render Window object but
with no success, I get attribute errors that I think are coming
from me mixing up namespaces. I am doing the import line above and
from vtk import *, I wonder if that is messing me up. I am going
to read up on Python to get to the bottom of this, but a quick
hint is also appreciated.
Thanks,
Marcin
On 06/17/2010 12:30 PM, Peter Brady wrote:
Hello Marcin,
Your question may have already been answered here:
http://markmail.org/message/zd2nwsztxl4xwbhm.
However I think the last time I tried this was in 3.4 so things
may have changed. In my experience the vtkPostScript writer does
a better job although it has been quite a while since I've tried
gl2ps.
Good luck,
Peter.
On Thu, Jun 17, 2010 at 8:23 AM, Marcin Sliwowski <[email protected]
<mailto:[email protected]>> wrote:
Hello,
I am trying to figure out how to save a visualization in
Paraview directly to ps/eps format.
I have compiled from source paraview 3.6 with the
configuration option VTK_USE_GL2PS set to ON.
There are many hits in the mailing list archives regarding
trying to use vtkGL2PSExporter to achieve this but I couldn't
find anything that I could make work.
I know that I can just use WriteImage("test.eps",
Writer="vtkPostScriptWriter") in the python shell to get what
I am asking for.
However, I wonder if GL2PS could provide a better looking eps
file, and having spent a couple of hours on this, I would
really like to get to the bottom of this.
I have looked at the vtkGL2PSExporter class reference at
http://www.vtk.org/doc/nightly/html/classvtkGL2PSExporter.html and
from there followed the vtkGL2PSExporter (Tests) link which
provides examples of unit testing that is done on the class.
One example is actually titled "test vector EPS output"
However, even after doing a: from paraview import vtk in the
python shell, when I try to follow the test example and do
exp = vtk.vtkGL2PSExporter() I get the following error:
AttributeError: 'module' object has no attribute
'vtkGL2PSExporter'
Can anyone shine any light on how to actually utilize the
vtkGL2PSExporter in Paraview to export an .eps, my impression
is that it has to be done in the Python Shell, and I am not
very familiar with Python.
Thank You,
Marcin Sliwowski
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Marcin Sliwowski
Systems Programmer
Duke University - Pratt School of Engineering
Office: 919-660-8450
_______________________________________________
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Please keep messages on-topic and check the ParaView Wiki at:
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Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
--
Marcin Sliwowski
Systems Programmer
Duke University - Pratt School of Engineering
Office: 919-660-8450
_______________________________________________
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 ParaView Wiki at:
http://paraview.org/Wiki/ParaView
Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview
