Hi all, Hi Peter,
We finally found the problem. It seems that the only major differences,
apart from the shader in 2D, is this line:
vtkSmartPointer<vtkPropAssembly> m_FiberAssembly;
// adding the m_FiberActor and retuning it in GetVtkProp()
We're not exactly sure how adding a vtkPropAssembly fixes the problem
though. Looking at vtk's documentation doesn't help much. Can someone
explain why I must use a vtkPropAssembly for my polydata to be properly
placed? I fail to see a link between those things.
Le 2015-02-26 16:26, Nil Goyette a écrit :
Hi all, Hi Peter,
I've been using the mitk::FiberBundleXMapper2D and 3D in our program
and I found a really strange behavior. I searched all day, to no
avail. For the same data (a polydata at the same adress in memory), my
lines are at different positions in my mapper (or at least *seen* at
different positions). As you can almost see in the screenshot [1] the
FiberBundleX is placed perfectly in 3D, but not in 2D. (They fit if
you make the FiberBundleX invisible, trust me!) Without any
explanation, you can probably already see that the image doesn't make
sense.
Either the 2D or 3D mapper is wrong here. I searched in
mitk::FiberBundleXMapper?D code to see if the mapper modify its data
in some way and, AFAIK, it doesn't. I can't think of any reason why my
data in 2D is 2.0 times bigger. I know that the image's spacing is
[2.0, 2.0, 2.0] (I use the spacing to generate the FiberBundleX), but
the spacing is the same for the 3D mapper... _it's the same data_.
If you have any hints about what's going on, something that explains
this bizarre behavior, I'm really interested!
As always, thank you for your time.
[1] http://i.imgur.com/yfEBe1H.png
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