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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal>This is my second email to this list. I’m still not so familiar with typedefs in coding, and I’ve the current problem:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have my own “image” objects which can be 2D or 3D and of different number type. If I assume they are only 2D and float I can do something like this:<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'>(The <span style='background:aqua;mso-highlight:aqua'>cyan</span> lines show methods of ‘my’ object.)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:blue'>const</span><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>unsigned</span> <span style='color:blue'>int</span> <span style='color:#010001'>DIMENSION</span> = 2;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>ImportImageFilter</span><<span style='color:blue'>float</span>,<span style='color:#010001'> DIMENSION</span> > <span style='color:#010001'>ImportFilterType</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>ImportFilterType</span><span style='font-size:7.0pt;font-family:"Courier New"'>::<span style='color:#010001'>Pointer</span> <span style='color:#010001'>importFilter</span> = <span style='color:#010001'>ImportFilterType</span>::<span style='color:#010001'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>ImportFilterType</span><span style='font-size:7.0pt;font-family:"Courier New"'>::<span style='color:#010001'>SizeType</span> <span style='color:#010001'>size</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>size</span>[0] = <span style='background:aqua;mso-highlight:aqua'>MYIMAGE.<span style='color:#010001'>GetXSIZE</span>();</span><o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>size</span><span style='font-size:7.0pt;font-family:"Courier New"'>[1] = <span style='background:aqua;mso-highlight:aqua'>MYIMAGE.<span style='color:#010001'>GetYSIZE</span>();</span><o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>ImportFilterType</span>::<span style='color:#010001'>IndexType</span> <span style='color:#010001'>start</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>start</span>.<span style='color:#010001'>Fill</span>( 0 );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>ImportFilterType</span>::<span style='color:#010001'>RegionType</span> <span style='color:#010001'>region</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>region</span>.<span style='color:#010001'>SetIndex</span>( <span style='color:#010001'>start</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>region</span>.<span style='color:#010001'>SetSize</span>( <span style='color:#010001'>size</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>importFilter</span><span style='font-size:7.0pt;font-family:"Courier New"'>-><span style='color:#010001'>SetRegion</span>( <span style='color:#010001'>region</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New";color:blue'>const</span><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>itk</span>::<span style='color:#010001'>SpacePrecisionType</span> <span style='color:#010001'>origin</span>[ <span style='color:#010001'>DIMENSION</span> ] = { 0.0, 0.0 };<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>importFilter</span>-><span style='color:#010001'>SetOrigin</span>( <span style='color:#010001'>origin</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>const</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>SpacePrecisionType</span> <span style='color:#010001'>spacing</span>[ <span style='color:#010001'>DIMENSION</span> ] = { 1.0, 1.0 };<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>importFilter</span><span style='font-size:7.0pt;font-family:"Courier New"'>-><span style='color:#010001'>SetSpacing</span>( <span style='color:#010001'>spacing</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>const</span> <span style='color:blue'>bool</span> <span style='color:#010001'>importImageFilterWillOwnTheBuffer</span> = <span style='color:blue'>false</span>; <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>float</span> *<span style='color:#010001'>localBuffer = <span style='background:aqua;mso-highlight:aqua'>MYIMAGE.GETPOINTER()</span>;</span></span><span style='font-size:4.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>importFilter</span>-><span style='color:#010001'>SetImportPointer</span>( <span style='color:#010001'>localBuffer</span>, <span style='color:#010001'>size</span>[0]*<span style='color:#010001'>size</span>[1], <span style='color:#010001'>importImageFilterWillOwnTheBuffer</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:8.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>Image</span>< <span style='color:blue'>float</span>,<span style='color:#010001'>DIMENSION</span> > <span style='color:#010001'>InputImageType</span>;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>Image</span>< <span style='color:blue'>float</span>,<span style='color:#010001'>DIMENSION</span> > <span style='color:#010001'>OutputImageType</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>CurvatureFlowImageFilter</span>< <span style='color:#010001'>InputImageType</span>, <span style='color:#010001'>OutputImageType</span> > <span style='color:#010001'>FilterType</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>FilterType</span>::<span style='color:#010001'>Pointer</span> <span style='color:#010001'>filter</span> = <span style='color:#010001'>FilterType</span>::<span style='color:#010001'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>SetInput</span>( <span style='color:#010001'>importFilter</span>-><span style='color:#010001'>GetOutput</span>() );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>SetTimeStep</span>( <span style='color:#010001'>timeStep</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>SetNumberOfIterations</span>( <span style='color:#010001'>iterations</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>Update</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>ImageRegionIterator</span>< <span style='color:#010001'>OutputImageType</span> > <span style='color:#010001'>IteratorType</span>;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>OutputImageType</span>::<span style='color:#010001'>Pointer</span> <span style='color:#010001'>filtered</span> = <span style='color:#010001'>filter</span>-><span style='color:#010001'>GetOutput</span>();<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> […]<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If my image is 3D I can do accordingly: (<span style='background:yellow;mso-highlight:yellow'>Yellow</span> is the difference to above)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:blue'>const</span><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>unsigned</span> <span style='color:blue'>int</span> <span style='color:#010001'>DIMENSION</span> = <span style='background:yellow;mso-highlight:yellow'>3</span>;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>ImportImageFilter</span><<span style='color:blue'>float</span>,<span style='color:#010001'> DIMENSION</span> > <span style='color:#010001'>ImportFilterType</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>ImportFilterType</span><span style='font-size:7.0pt;font-family:"Courier New"'>::<span style='color:#010001'>Pointer</span> <span style='color:#010001'>importFilter</span> = <span style='color:#010001'>ImportFilterType</span>::<span style='color:#010001'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>ImportFilterType</span><span style='font-size:7.0pt;font-family:"Courier New"'>::<span style='color:#010001'>SizeType</span> <span style='color:#010001'>size</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>size</span>[0] = <span style='background:aqua;mso-highlight:aqua'>MYIMAGE.<span style='color:#010001'>GetXSIZE</span>();</span><o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>size</span><span style='font-size:7.0pt;font-family:"Courier New"'>[1] = <span style='background:aqua;mso-highlight:aqua'>MYIMAGE.<span style='color:#010001'>GetYSIZE</span>();</span><o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001;background:yellow;mso-highlight:yellow'>size</span><span style='font-size:7.0pt;font-family:"Courier New";background:yellow;mso-highlight:yellow'>[2] = MYIMAGE.<span style='color:#010001'>GetZSIZE</span>();</span><span style='font-size:7.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>ImportFilterType</span>::<span style='color:#010001'>IndexType</span> <span style='color:#010001'>start</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>start</span>.<span style='color:#010001'>Fill</span>( 0 );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>ImportFilterType</span>::<span style='color:#010001'>RegionType</span> <span style='color:#010001'>region</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>region</span>.<span style='color:#010001'>SetIndex</span>( <span style='color:#010001'>start</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>region</span>.<span style='color:#010001'>SetSize</span>( <span style='color:#010001'>size</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>importFilter</span><span style='font-size:7.0pt;font-family:"Courier New"'>-><span style='color:#010001'>SetRegion</span>( <span style='color:#010001'>region</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New";color:blue'>const</span><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>itk</span>::<span style='color:#010001'>SpacePrecisionType</span> <span style='color:#010001'>origin</span>[ <span style='color:#010001'>DIMENSION</span> ] = <span style='background:yellow;mso-highlight:yellow'>{ 0.0, 0.0, 0.0 }</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>importFilter</span>-><span style='color:#010001'>SetOrigin</span>( <span style='color:#010001'>origin</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>const</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>SpacePrecisionType</span> <span style='color:#010001'>spacing</span>[ <span style='color:#010001'>DIMENSION</span> ] = <span style='background:yellow;mso-highlight:yellow'>{ 1.0, 1.0, 1.0 }</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:#010001'>importFilter</span><span style='font-size:7.0pt;font-family:"Courier New"'>-><span style='color:#010001'>SetSpacing</span>( <span style='color:#010001'>spacing</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>const</span> <span style='color:blue'>bool</span> <span style='color:#010001'>importImageFilterWillOwnTheBuffer</span> = <span style='color:blue'>false</span>; <o:p></o:p></span></p><p class=MsoNormal style='margin-left:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New";color:blue'>float</span><span style='font-size:7.0pt;font-family:"Courier New"'> *<span style='color:#010001'>localBuffer = <span style='background:aqua;mso-highlight:aqua'>MYIMAGE.GETPOINTER()</span>;</span><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>importFilter</span>-><span style='color:#010001'>SetImportPointer</span>( <span style='color:#010001'>localBuffer</span>, <span style='color:#010001'>size</span>[0]*<span style='color:#010001'>size</span>[1]<span style='background:yellow;mso-highlight:yellow'>*<span style='color:#010001'>size</span>[2]</span>, <span style='color:#010001'>importImageFilterWillOwnTheBuffer</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:8.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>Image</span>< <span style='color:blue'>float</span>,<span style='color:#010001'>DIMENSION</span> > <span style='color:#010001'>InputImageType</span>;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>Image</span>< <span style='color:blue'>float</span>,<span style='color:#010001'>DIMENSION</span> > <span style='color:#010001'>OutputImageType</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>CurvatureFlowImageFilter</span>< <span style='color:#010001'>InputImageType</span>, <span style='color:#010001'>OutputImageType</span> > <span style='color:#010001'>FilterType</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>FilterType</span>::<span style='color:#010001'>Pointer</span> <span style='color:#010001'>filter</span> = <span style='color:#010001'>FilterType</span>::<span style='color:#010001'>New</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>SetInput</span>( <span style='color:#010001'>importFilter</span>-><span style='color:#010001'>GetOutput</span>() );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>SetTimeStep</span>( <span style='color:#010001'>timeStep</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>SetNumberOfIterations</span>( <span style='color:#010001'>iterations</span> );<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>filter</span>-><span style='color:#010001'>Update</span>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>typedef</span> <span style='color:#010001'>itk</span>::<span style='color:#010001'>ImageRegionIterator</span>< <span style='color:#010001'>OutputImageType</span> > <span style='color:#010001'>IteratorType</span>;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:#010001'>OutputImageType</span>::<span style='color:#010001'>Pointer</span> <span style='color:#010001'>filtered</span> = <span style='color:#010001'>filter</span>-><span style='color:#010001'>GetOutput</span>();<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> […]<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The problem I have is the following. I can query my object about its dimensionality, but I can’t do the following:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New";color:blue'>const</span><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>unsigned</span> <span style='color:blue'>int</span> <span style='color:#010001'>DIMENSION</span> =<span style='background:aqua;mso-highlight:aqua'> MYIMAGE.<span style='color:#010001'>GETDIMENSIONALITY</span>();</span><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>because the typedefs are evaluated on <i>compilation</i> not on runtime. So my way around this is, to actually <i>duplicate </i> all the code and have both my examples in a switch-case:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>switch</span>(<span style='background:aqua;mso-highlight:aqua'>MYIMAGE.<span style='color:#010001'>GETDIMENSIONALITY</span>()</span>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span>(2):<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='margin-left:72.0pt;text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'>… <i>EXAMPLE 2D as above<o:p></o:p></i></span></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'>}<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>break</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span>(3): <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='margin-left:72.0pt;text-indent:36.0pt'><span style='font-size:7.0pt;font-family:"Courier New"'>… <i>EXAMPLE 3D as above<o:p></o:p></i></span></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'>}<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>break</span>;<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'>}<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal>Which is rather obvious code duplication. Is there a better way to do this? (there has to!) The problem branches out, if I also allow the type <i>float</i> to be specified by my object as in<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>switch</span>(<span style='background:aqua;mso-highlight:aqua'>MYIMAGE.<span style='color:#010001'>GETDATATYPE</span>()</span>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> {<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span>(1):…float…;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span>(2):…double…;<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> <span style='color:blue'>case</span>(3):…<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'> …<o:p></o:p></span></p><p class=MsoNormal style='text-indent:36.0pt;text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'>} <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:7.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'>I would very much appreciate a few lines of (pseudo-) code showing me how I can do this better. <o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'>Thank you very much,<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'> Best regards,<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'> Bernhard<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>