<DIV>Hi,</DIV>
<DIV> </DIV>
<DIV>I`m sorry: I tried Modified() as soon as I got your message, but this changed nothing: my image saved in essai.bmp is still blank!</DIV>
<DIV> </DIV>
<DIV>Isabelle<BR><BR><B><I>Goodwin Lawlor <goodwin.lawlor@ucd.ie></I></B> a écrit :</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Try this before you call a Write()<BR><BR>renSrc->Modified();<BR><BR>hth<BR><BR>Goodwin<BR><BR><BR>"Renaud Isabelle" <RENAUISA@YAHOO.FR>wrote in message<BR>news:20050609203658.51819.qmail@web26105.mail.ukl.yahoo.com...<BR>Don't anyone have a solution? I really don't manage to solve this.<BR><BR>Why just this 2 lines added could change something?<BR><BR>Please<BR>Isa<BR><BR>Renaud Isabelle <RENAUISA@YAHOO.FR>a écrit :<BR>Hi,<BR><BR>I read your code example and I think this could help me because this seems<BR>to be right.<BR><BR>- When I display directly on screen, the image "essai.bmp" saved is the<BR>exact copy of what is rendered on screen: here is my code where everything<BR>is fine:<BR><BR>// render to memory with m_pRenderWindow as a vtkWin32OpenGLRenderWindow.<BR>m_pRenderWindow->Render();<BR><BR>vtkWindowToImageFilter* renSrc =
vtkWindowToImageFilter::New();<BR>renSrc->SetInput(m_pRenderer);<BR>vtkBMPWriter* writer = vtkBMPWriter::New();<BR>writer->SetInput(renSrc->GetOutput());<BR>writer->SetFileName("essai.bmp");<BR>writer->Write();<BR><BR>- However, to avoid flickering on screen, I want to render off screen by<BR>double buffering. Here is the new code. Just is added the line<BR><BR>// render to memory with m_pRenderWindow as a vtkWin32OpenGLRenderWindow.<BR>int *size = m_pRenderWindow->GetSize();<BR>m_pRenderWindow->SetupMemoryRendering(size[0], size[1],<BR>GetDC() ->GetSafeHdc());<BR>m_pRenderWindow->Render();<BR><BR>vtkWindowToImageFilter* renSrc = vtkWindowToImageFilter::New();<BR>renSrc->SetInput(m_pRenderer);<BR>vtkBMPWriter* writer = vtkBMPWriter::New();<BR>writer->SetInput(renSrc->GetOutput());<BR>writer->SetFileName("essai.bmp");<BR>writer->Write();<BR><BR>m_pRenderWindow->ResumeScreenRendering();<BR><BR>Problem: The image saved in essai.bmp is white.
How could this be? I really<BR>don't understand.I check class vtkWin32OpenGLRenderWindow and I am stuck on<BR>this problem for 3 days.<BR><BR>Please help<BR>Isa<BR><BR><BR>Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger<BR>Téléchargez le ici ! _______________________________________________<BR>This is the private VTK discussion list.<BR>Please keep messages on-topic. Check the FAQ at:<BR>http://www.vtk.org/Wiki/VTK_FAQ<BR>Follow this link to subscribe/unsubscribe:<BR>http://www.vtk.org/mailman/listinfo/vtkusers<BR><BR><BR><BR>Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger<BR>Téléchargez le ici !<BR><BR><BR><BR>_______________________________________________<BR>Insight-users mailing list<BR>Insight-users@itk.org<BR>http://www.itk.org/mailman/listinfo/insight-users<BR><BR><BR><BR>_______________________________________________<BR>This is the private VTK discussion list. <BR>Please keep messages on-topic. Check the FAQ at:
http://www.vtk.org/Wiki/VTK_FAQ<BR>Follow this link to subscribe/unsubscribe:<BR>http://www.vtk.org/mailman/listinfo/vtkusers<BR></BLOCKQUOTE><p>
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