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<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">========================================<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">Hello: I posted a similar question some time ago and got no response. Since then I have found a workaround to solve my problem.<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">But on Oct 13, 2009, Microsoft pushed a Windows update for KB958869. All the sudden my workaround failed to work. The MS update changed the Windows GdiPlus.dll file
to prevent centain buffer overrun issues.<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">Can anyone please help?<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">Here is the code that gives the problem. It is 2D image rotating with vtkImageReslice and vtkTransform.
<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">If you try the code, it works just fine! The problem is, we are using the code in the same application that uses a 3rd party library utilizing DirectX hardware acceleration.
After we initialize the DirectX based library, the code below would fail with nDim[0]==1. Once we comment the 3rd party library, the code would work perfect as expected.<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">vtkImageData *pvtkImageData1;<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pvtkImageData1= vtkImageData::New();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pvtkImageData1->SetDimensions(nOriginalWidth,nOriginalHeight,1);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pvtkImageData1->SetScalarTypeToFloat();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pvtkImageData1->SetNumberOfScalarComponents(1);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">//here, need to put image data in pvtkImageData1. Size is
<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">//nOriginalWidthXnOriginalHeight<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">vtkTransform *pTransForm = vtkTransform::New();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pTransForm->Identity();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pTransForm->RotateZ(fAngle);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">vtkImageReslice *pImageReslice = vtkImageReslice::New();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetOutputDimensionality(2);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetResliceAxesDirectionCosines(1,0,0,0,1,0,0,0,1);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetResliceTransform(pTransForm);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetInput(pvtkImageData1);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">vtkImageChangeInformation* centering =vtkImageChangeInformation::New();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">centering->SetInput(pvtkImageData1);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">centering->CenterImageOn();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetInput(centering->GetOutput());<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetResliceAxesOrigin(0,0,0);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->SetOutputExtentToDefault();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->GetOutput()->SetUpdateExtentToWholeExtent();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->Update();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pImageReslice->GetOutput()->Update();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">vtkImageData *pvtkOutImageData = pImageReslice->GetOutput();<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">int nDim[3];<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">pvtkOutImageData->GetDimensions(nDim);<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">//===================Error===========================<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">//at this point the nDim[0] return 1, which is wrong.<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">//nDim[0] should be at least nOriginalWidth.<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt"><o:p> </o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">Thanks!<o:p></o:p></span></font></p>
<p class="MsoPlainText"><font size="2" face="Courier New"><span style="font-size:
10.0pt">Thomas<o:p></o:p></span></font></p>
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