[vtkusers] vtkImageReslice axes direction, based on a vtkPlane

[Tijmen Klein]

Hi David,

This is exactly what I was looking for, thank you! Got the newest VTK
version from git, compiled it and modified my program (using
http://vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/ImageProcessing/Python/ImageInteractorReslice.py
as
an example). vtkImageResliceMapper really makes a world of difference, and
makes the slicing a lot easier.

However, there is still one small issue for me. I would like to display this
slice as if it was a 2D image. Would you have an idea how to do this? If I
simply add the vtkImageSlice to my renderer, it shows up at the exact
location of the cut (which is to be expected). I could set the camera
position + focal point based on the origion and normal of the cutting plane,
but I would like the slice to fill the whole viewport. The
method  ResampleToScreenPixelsOn() seems to be designed to do this, using
this however does not change a thing for me.

Cheers,
Tijmen

On Wed, Sep 21, 2011 at 5:06 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Tijmen,
>
> If you are able to grab the devel version of VTK from git, your
> best option is to use the new image rendering classes:
> http://www.vtk.org/Wiki/VTK/Image_Rendering_Classes
> The vtkImageResliceMapper has a method called SetSlicePlane(),
> so all you have to do is set the image as the input, then set the
> plane you want to slice with.  The mapper will do everything else.
>
>  - David
>
>
> On Wed, Sep 21, 2011 at 3:42 AM, Tijmen Klein <T.R.Klein at student.rug.nl>
> wrote:
> > Hello Everyone,
> > I have a volume that I cut off using a vtkPlane
> > (volume->AddClippingPlane()), which works really well. But sometimes I
> also
> > need to show to cut itself. First I tried to use a vtkCutter for this,
> the
> > geometry of the output is fine, but the texture is incorrect.
> > So I'm now used a vtkImageReslice, which gives the desired output.
> However,
> > the textured plane of the output does not always cover the whole area of
> the
> > vtkCutter. For example, see this
> > image: http://dl.dropbox.com/u/27566470/slice_and_cut.png The red bar
> > indicates the geometry of the vtkCutter, the blue plane is the slice of
> the
> > vtkImageReslice.
> > How can I make sure that the output of vtkImageReslice covers the whole
> > vtkCutter? I have the feeling that my current method is too complex. I
> want
> > an output that is equal to the output of creating a slice in Paraview.
> > Cheers,
> > Tijmen
>
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