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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Dear All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Many thanks for the speed of reply. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>John, your point is well taken and I was
aware of some strange behaviour when I did my direct altering of the
vtkUnstructuredGrid geometry.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Lisa, your point is in line with what John
is suggesting. I had been using an Update on various things but didn’t
use (know of) Modified.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jeff, you hit the nail on the head. Most
of my problems were because I was doing a circuitous fix to a problem that
doesn’t exist if I use vtkWarpVector. This is a purpose written filter
that achieves essentially what I want. I implement it as follows:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
vtkWarpVector
*pDisplacedGeometry ;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
vtkDataSetMapper
*pDisplacedMeshMapper;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
vtkActor
*pDisplacedMeshActor;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>void CSampleDoc::CreateDisplacedActor()<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>{ <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> this->pDisplacedGeometry->SetInput(pUnstructuredGrid)
;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
this->pDisplacedMeshMapper->SetInput(pDisplacedGeometry->GetOutput());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>// This doesn't seem to work<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> // this->pDisplacedMeshMapper->ScalarVisibilityOn()
;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> this->pDisplacedMeshActor->SetMapper(this->pDisplacedMeshMapper);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> (this->pDisplacedMeshActor->GetProperty())->SetLineWidth(1.25)
;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> this->pDisplacedMeshActor->GetProperty()->SetRepresentationToWireframe()
;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
this->pDisplacedMeshActor->VisibilityOff();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Note that I had wanted to display the
scalar field on the wire frame displaced actor, but I can’t seem to get
it to work. Also, still slight strange clipping behaviour when I toggle between
showing the displaced mesh and the original (even though I use a:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
GetView()->Renderer->ResetCameraClippingRange() ;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> GetView()->Invalidate() ;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>after changing the actor’s
visibility). Not the end of the world though.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><b><font size=3 color=navy face=Arial><span
style='font-size:12.0pt;font-family:Arial;color:navy;font-weight:bold'>James C
Robinson</span></font></b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>, PhD, Chartered
Engineer,</span></font><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face=Wingdings><span
style='font-size:12.0pt;font-family:Wingdings;color:navy'>+</span></font><font
color=navy><span style='color:navy'> </span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>42 Rivergrove,</span></font><font color=navy><span
style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> Glanmire,</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> Co.
<st1:place w:st="on"><st1:City w:st="on">Cork</st1:City></st1:place>,</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> <st1:place
w:st="on">Eire</st1:place></span></font><font color=navy><span
style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Wingdings 2"><span
style='font-size:12.0pt;font-family:"Wingdings 2";color:navy'>'</span></font><font
color=navy><span style='color:navy'> +353 21 4822028<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> +353
87 2393010<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Wingdings 2"><span
style='font-size:12.0pt;font-family:"Wingdings 2";color:navy'>6</span></font><font
color=navy><span style='color:navy'> +353 21
4822028<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face=Wingdings><span
style='font-size:12.0pt;font-family:Wingdings;color:navy'>-</span></font><font
color=navy><span style='color:navy'> </span></font><font
color=blue><span style='color:blue'>j.robinson@kepler-systems.com</span></font><font
color=navy><span style='color:navy'> </span></font><o:p></o:p></p>
</div>
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<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Lisa Avila
[mailto:lisa.avila@kitware.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 11 August 2004 14:12<br>
<b><span style='font-weight:bold'>To:</span></b> j.robinson@kepler-systems.com;
'John Biddiscombe'<br>
<b><span style='font-weight:bold'>Cc:</span></b> Vtk Users<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [vtkusers] Clipping
Planes</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> <br>
Many thanks for replying. I have tried EVERYTHING. I have even tried reloading
all the props into the renderer. I have checked the altered bounds on
everything from the vtkUnstructuredGrid to the vtkPoints* pNodalGeometry. None
of the bounds are altered after the change (which, I would imagine, is why the
resetting of the clip planes has no effect). My workaround is:</span></font><o:p></o:p></p>
</blockquote>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'><br>
If your bounds are not being recomputed, then you are missing a call to Modified()
somewhere - most likely down in your point data. Some of the set methods are
"fast' in that they don't check bounds and they don't call Modified() -
assuming that you will do this once at the end when you are done with your
modifications.<br>
<br>
Lisa</span></font><o:p></o:p></p>
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