[vtkusers] Stream the output of vtkrenderwindow to a HTML5 browser
Sebastien Jourdain
sebastien.jourdain at kitware.com
Sun Nov 15 16:52:38 EST 2015
Oops sorry miss read the issue.
VTK-Web is actually disabled on Windows as Twisted require an external
library (api32.dll, I think).
It is possible to make it run on Windows but not really validated and
tested.
You will have to install that dependency on your system.
Moreover, could you list the content of that directory? (I want to make
sure Twisted get installed on your system)
C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\
Seb
On Sun, Nov 15, 2015 at 3:43 PM, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:
> It seems that you have a twisted version installed inside your system
> Python that conflict with the one provided within VTK.
>
> On Sun, Nov 15, 2015 at 2:38 PM, Mengda Wu <wumengda at gmail.com> wrote:
>
>> Hi Sebastien,
>>
>> Thanks a lot for your reply. I just tried vtk-web with the Cone
>> application. But I got some errors when I tested. I used Python 2.7.7 and
>> VTK 6.3.0. I am not sure what's wrong.
>>
>> C:\Library\VTK\VTK-6.3.0\Build\bin\Release>.\vtkpython.exe
>> C:\Library\VTK\VTK-6.
>> 3.0\Build\Wrapping\Python\vtk\web\vtk_web_cone.py --content
>> C:\Library\VTK\VTK-6
>> .3.0\Build\www\ --port 3800
>> 2015-11-15 15:35:00-0500 [-] Log opened.
>> 2015-11-15 15:35:01-0500 [-] Site starting on 3800
>> 2015-11-15 15:35:01-0500 [-] Starting factory <twisted.web.server.Site
>> instance
>> at 0x0000000003E47F48>
>> 2015-11-15 15:35:09-0500 [HTTPChannel,0,127.0.0.1] Unhandled Error
>> Traceback (most recent call last):
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\protocols
>> \basic.py", line 571, in dataReceived
>> why = self.lineReceived(line)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\http.
>> py", line 1656, in lineReceived
>> self.allContentReceived()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\http.
>> py", line 1731, in allContentReceived
>> req.requestReceived(command, path, version)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\http.
>> py", line 827, in requestReceived
>> self.process()
>> --- <exception caught here> ---
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\serve
>> r.py", line 189, in process
>> self.render(resrc)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\serve
>> r.py", line 238, in render
>> body = resrc.render(self)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\resou
>> rce.py", line 250, in render
>> return m(request)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\stati
>> c.py", line 631, in render_GET
>> producer.start()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\stati
>> c.py", line 710, in start
>> self.request.registerProducer(self, False)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\http.
>> py", line 873, in registerProducer
>> self.transport.registerProducer(producer, streaming)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\internet\
>> abstract.py", line 112, in registerProducer
>> producer.resumeProducing()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\stati
>> c.py", line 720, in resumeProducing
>> self.request.write(data)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\serve
>> r.py", line 217, in write
>> http.Request.write(self, data)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\http.
>> py", line 1002, in write
>> value = networkString('%s' % (value,))
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\python\co
>> mpat.py", line 364, in networkString
>> raise TypeError("Can only pass-through bytes on Python 2")
>> exceptions.TypeError: Can only pass-through bytes on Python 2
>>
>> 2015-11-15 15:35:09-0500 [HTTPChannel,0,127.0.0.1] Unhandled Error
>> Traceback (most recent call last):
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\serve
>> r.py", line 321, in processingFailed
>> % webutil.formatFailure(reason))
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\util.
>> py", line 425, in formatFailure
>> flattenString(None,
>> FailureElement(myFailure)).addBoth(result.append
>> )
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_flat
>> ten.py", line 420, in flattenString
>> d = flatten(request, root, io.write)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_flat
>> ten.py", line 402, in flatten
>> _writeFlattenedData(state, write, result)
>> --- <exception caught here> ---
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_flat
>> ten.py", line 359, in _writeFlattenedData
>> element = state.next()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_flat
>> ten.py", line 326, in _flattenTree
>> raise FlattenerError(e, roots, extract_tb(exc_info()[2]))
>> twisted.web.error.FlattenerError: Exception while flattening:
>> <twisted.web.util.FailureElement object at 0x0000000003ED3240>
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_flat
>> ten.py", line 317, in _flattenTree
>> element = stack[-1].next()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_flat
>> ten.py", line 286, in _flattenElement
>> result = root.render(request)
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\_elem
>> ent.py", line 184, in render
>> return loader.load()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\templ
>> ate.py", line 465, in load
>> self._loadedTemplate = self._loadDoc()
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\web\templ
>> ate.py", line 446, in _loadDoc
>> f = self._path.open('r')
>> File
>> "C:\Library\VTK\VTK-6.3.0\Build\Wrapping\Python\twisted\python\fi
>> lepath.py", line 828, in open
>> return open(self.path, mode + 'b')
>> IOError: [Errno 2] No such file or directory:
>> 'C:\\Library\\VTK\\VTK-6.3
>> .0\\Build\\Wrapping\\Python\\twisted\\web\\failure.xhtml'
>>
>> Thanks,
>> Guanglei
>>
>> On Sat, Nov 14, 2015 at 11:33 AM, Sebastien Jourdain <
>> sebastien.jourdain at kitware.com> wrote:
>>
>>> Hi Mengda,
>>>
>>> I guess it depend what kind of data you want to stream.
>>> VTK web is already doing that by sending images through Websockets.
>>> There is even an option that will send the scene geometry which will let
>>> you interact with the scene locally inside your browser.
>>>
>>> There is several example in the VTK repository that show how to setup a
>>> server with a basic VTK application.
>>>
>>> Seb
>>>
>>> On Fri, Nov 13, 2015 at 12:46 PM, Mengda Wu <wumengda at gmail.com> wrote:
>>>
>>>> Hi vtkusers,
>>>>
>>>> I am thinking to stream the output of vtkrenderwindow to a HTML5
>>>> browser. I hope to do an offscreen rendering on the server and stream it
>>>> to a HTML5 browser on the client. Is this possible?
>>>>
>>>> Thanks,
>>>> Mengda
>>>>
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>>>
>>
>
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