<div dir="ltr">The event handling needs to happen on the client side (JS) which should then trigger a RPC call to the server to adjust the resolution of the server data. I don't think we register any key listener in the browser that's why they don't get forwarded to the server.</div><br><div class="gmail_quote"><div dir="ltr">On Mon, Dec 3, 2018 at 8:47 AM ivan rodriguez <<a href="mailto:ivandiegorodriguez@gmail.com">ivandiegorodriguez@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Hello,<div><br></div><div>I'm using the module vtkWeb for Remote Rendering, following this simple python example:</div><div><br></div><div><font color="#1155cc"><u><a href="https://github.com/dmreagan/vtk-remote-render/blob/master/server/vtk_server.py" target="_blank">https://github.com/dmreagan/vtk-remote-render/blob/master/server/vtk_server.py</a></u></font><br></div><div><font color="#1155cc"><u><br></u></font></div><div>and I have modified it in order to include a keyPress event. The code works but the </div><div>key event is not working . Please find my code below (the only modification from the link is the class MyInteractorStyle ).</div><div><br></div><div>I'll really appreciate any help with this! </div><div><br></div><div>Thanks !!</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div>##########################################################################</div><div>##########################################################################</div><div><br></div><div><div># import to process args</div><div>import sys</div><div>import os</div><div><br></div><div># import vtk modules.</div><div>import vtk</div><div>from vtk.web import protocols</div><div>from vtk.web import wslink as vtk_wslink</div><div>from wslink import server</div><div><br></div><div>try:</div><div> import argparse</div><div>except ImportError:</div><div> # since Python 2.6 and earlier don't have argparse, we simply provide</div><div> # the source for the same as _argparse and we use it instead.</div><div> from vtk.util import _argparse as argparse</div><div><br></div><div># =============================================================================</div><div># Create custom ServerProtocol class to handle clients requests</div><div># =============================================================================</div><div><br></div><div><br></div><div>class MyInteractorStyle(vtk.vtkInteractorStyleTrackballCamera):</div><div><br></div><div> def __init__(self,renderer, cone):</div><div> self.parent = renderer.GetInteractor()</div><div><span style="white-space:pre-wrap"> </span>self.resolution=5</div><div><span style="white-space:pre-wrap"> </span>self.cone = cone</div><div><br></div><div> self.AddObserver("KeyPressEvent",self.keyPressEvent)</div><div><br></div><div> def keyPressEvent(self,obj,event):</div><div> key = self.parent.GetKeySym()</div><div> if key == 'l':</div><div><span style="white-space:pre-wrap"> </span> print(key)</div><div><span style="white-space:pre-wrap"> </span> self.cone.SetResolution(self.resolution)</div><div><span style="white-space:pre-wrap"> </span> self.resolution+=1</div><div> return</div><div><br></div><div><br></div><div><br></div><div><br></div><div>class _WebCone(vtk_wslink.ServerProtocol):</div><div><br></div><div> # Application configuration</div><div> view = None</div><div> authKey = "wslink-secret"</div><div><br></div><div> def initialize(self):</div><div> global renderer, renderWindow, renderWindowInteractor, cone, mapper, actor</div><div><br></div><div> # Bring used components</div><div> self.registerVtkWebProtocol(protocols.vtkWebMouseHandler())</div><div> self.registerVtkWebProtocol(protocols.vtkWebViewPort())</div><div> self.registerVtkWebProtocol(protocols.vtkWebViewPortImageDelivery())</div><div> self.registerVtkWebProtocol(protocols.vtkWebViewPortGeometryDelivery())</div><div><br></div><div> # Update authentication key to use</div><div> self.updateSecret(_WebCone.authKey)</div><div><br></div><div> # Create default pipeline (Only once for all the session)</div><div> if not _WebCone.view:</div><div> # VTK specific code</div><div> renderer = vtk.vtkRenderer()</div><div> renderWindow = vtk.vtkRenderWindow()</div><div> renderWindow.AddRenderer(renderer)</div><div><br></div><div> renderWindowInteractor = vtk.vtkRenderWindowInteractor()</div><div> renderWindowInteractor.SetRenderWindow(renderWindow)</div><div> </div><div><span style="white-space:pre-wrap"> </span> <br></div><div><br></div><div> cone = vtk.vtkConeSource()</div><div> mapper = vtk.vtkPolyDataMapper()</div><div> actor = vtk.vtkActor()</div><div><br></div><div> mapper.SetInputConnection(cone.GetOutputPort())</div><div> actor.SetMapper(mapper)</div><div><br></div><div><span style="white-space:pre-wrap"> </span> renderWindowInteractor.SetInteractorStyle(MyInteractorStyle(renderWindow, cone))</div><div><br></div><div> renderer.AddActor(actor)</div><div> renderer.ResetCamera()</div><div> renderWindow.Render()</div><div><br></div><div> # VTK Web application specific</div><div> _WebCone.view = renderWindow</div><div> self.getApplication().GetObjectIdMap().SetActiveObject("VIEW", renderWindow)</div><div><br></div><div><span style="white-space:pre-wrap"> </span> # renderWindowInteractor.Start()</div><div><br></div><div># =============================================================================</div><div># Main: Parse args and start server</div><div># =============================================================================</div><div><br></div><div>if __name__ == "__main__":</div><div> # Create argument parser</div><div> parser = argparse.ArgumentParser(description="VTK/Web Cone web-application")</div><div><br></div><div> # Add default arguments</div><div> server.add_arguments(parser)</div><div><br></div><div> # Extract arguments</div><div> args = parser.parse_args()</div><div><br></div><div> # Configure our current application</div><div> _WebCone.authKey = args.authKey</div><div><br></div><div> # Start server</div><div> server.start_webserver(options=args, protocol=_WebCone)</div></div><div><br></div></div></div></div></div>
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