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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>I am trying to display a vtkImageData volume one
slice at a time using<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>vtkActor2D</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'> and
vtkImageMapper. I need to be able to <span class=GramE>zoom</span> the image in<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>and</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
out, and rotate the volume 90 degrees (within the program, not under<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>user</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
control) so that I display YZ planes and<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>XZ planes, and use the mouse to pick data points
taking voxel spacing into<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>account</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>.
It seems straight-forward, but I've tried several different combinations<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>of</span></font></span><font size=2
face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'> filters
unsuccessfully and I'm sure that there must be an obvious way to<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>do</span></font></span><font size=2
face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'> this.
(I presume that if I get the settings correct, then there are lots of <o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>classes</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
that will work if pressed).<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Things I've tried so far include <o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.75in;text-indent:-.5in;mso-list:l0 level1 lfo1;
tab-stops:list .75in'><![if !supportLists]><font size=2 face=Symbol><span
lang=EN-AU style='font-size:10.0pt;font-family:Symbol;mso-fareast-font-family:
Symbol;mso-bidi-font-family:Symbol'><span style='mso-list:Ignore'><font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>vtkImageReslice or vtkImagePermute
to get rotated data<o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.75in;text-indent:-.5in;mso-list:l0 level1 lfo1;
tab-stops:list .75in'><![if !supportLists]><font size=2 face=Symbol><span
lang=EN-AU style='font-size:10.0pt;font-family:Symbol;mso-fareast-font-family:
Symbol;mso-bidi-font-family:Symbol'><span style='mso-list:Ignore'><font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>m_imageShrink3D and <span
style='mso-spacerun:yes'></span>vtkImageChangeInformation for zooming <o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.75in;text-indent:-.5in;mso-list:l0 level1 lfo1;
tab-stops:list .75in'><![if !supportLists]><font size=2 face=Symbol><span
lang=EN-AU style='font-size:10.0pt;font-family:Symbol;mso-fareast-font-family:
Symbol;mso-bidi-font-family:Symbol'><span style='mso-list:Ignore'><font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'>vtkInteractorStyle::
ComputeDisplayToWorld to get data coordinates<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Nothing seems to do quite what I want...<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>If it is relevant, I am displaying 2D images using a
wxWindows GUI and am<o:p></o:p></span></font></p>

<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>Using my own interactorStyle to
capture picking points.</span></font></span><font size=2 face=Arial><span
lang=EN-AU style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>So in summary: can any users experienced in
displaying 2D images suggest<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>What classes I should be using?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Thanks,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Nerolie<o:p></o:p></span></font></p>

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