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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I’ve done something similar: CLR (by way of C++/CLI) to interface with native C++ vtk, create a DLL from this and link it into a .NET windows form. Within the DLL, I’m simply
assigning the vtk RenderWindows to passed-in .NET PictureBox controls, however. What is this vtkPanel that you mention?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I’m getting frame rates close to what you mention (80-100 fps), but this could simply be my application, machine, etc. I’ve not tested these various other scenarios to see
if it improves/degrades otherwise. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org]
<b>On Behalf Of </b>Frederic DANESI</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">We came accross something weird when using Visual Studio CLR.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">We have created a very simple VTK pipeline (load a STL file => render => move the camera around while taking screen shots).<o:p></o:p></p>
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<p class="MsoNormal">Those operation are integrated in a vtkPanel, build as a C++ DLL.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">When using this DLL in a console application (with the VTK default RenderWindow), we get a framerate of 100 fps.<o:p></o:p></p>
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<p class="MsoNormal">When using this DLL in a winform application (Visual Studio 6,MFC, no CLR), we get the same framerate.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">When using this DLL in a .Net Windows Form (Visual Studio 10, CLR) we get a framerate of 26 fps, which is not acceptable.<o:p></o:p></p>
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<p class="MsoNormal">(Obvisously, if we use directly the VTK classes inside the CLR project without building a library, the framerate is even worse : 6 fps).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:10.5pt">Does anyone have knowledge about using VTK inside a CLR application without such a loss of performance ? Are we missing something ?<o:p></o:p></p>
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