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Thanks for your answer.<br>
But I didn't manage to fix the problem.<br>
<br>
Actually, I use vtkImageViewer2, which contains a vtkImageActor and <br>
a vtkImageMapToWindowLevelColors to generate a unsigned char image, <br>
which is the input to the vtkImageActor.<br>
<br>
So, I call to vtkImageViewer2::SetInput(image), with the output image from
vtkImagePlaneWidget.<br>
(vtkImageData * GetResliceOutput () ).<br>
<br>
The problem comes up when the input 3D image to the vtkImagePlaneWidget is
changed.<br>
I call again to the SetInput() method with the output from the widget, which
has the following extents:<br>
whole extent: 0,255, 0,7, 0,0<br>
extent and updateExtent: 0,255, 0,15, 0,0<br>
And this looks strange... ???<br>
So, the output from widget is connected to the viewer.... <br>
<br>
Then I tried to set the extent manually with vtkImageActor::SetDisplayExtent(image->GetWholeExtent()),
<br>
but there is no difference. <br>
Perhaps because the input to this class is the output from vtkImageMapToWindowLevelColors...<br>
<br>
I hope this explanation can help you to help me.<br>
It seems to be a problem with updating of extents... <br>
<br>
Thanks in advance.<br>
Sergio<br>
<br>
<br>
<br>
<br>
Veerapuram Varadhan escribió:<br>
<blockquote type="cite"
cite="mid219255740409010603d00b8a4@mail.gmail.com">
<pre wrap="">Hi,
Does the vtkImageActor that you use to load the 2D slice is a newly
created one or you are re-using it?
In case, if you are reusing an already created vtkImageActor by just
setting a new input to it, you have to update the extent of the actor
as well.
try using vtkImageActor::SetDisplayExtent(), before rendering.
HTH,
V. Varadhan.
On Wed, 01 Sep 2004 14:32:23 +0200, Sergio Andres <a class="moz-txt-link-rfc2396E" href="mailto:sergio@unizar.es"><sergio@unizar.es></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi all,
I got an error from vtk : "Update extent does not lie within whole
extent", but I don't know how to fix it.
First, I build a new 3D vtkImageData, and then I use vtkImageReslice to
get a new 2D slice.
It is this slice which causes the error, since it is the input to a
vtkImageActor.
Before rendering, the image extents seems to have the right values, but
after rendering
this values are different and the error comes up (the renderer modifies
these values...??)
Has anyone a solution?
Thanks!
Sergio
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</pre>
</blockquote>
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</blockquote>
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