Just an update so nobody answer parts
of my questions for nothing. I found a vtk class called
vtkMassProperties which can calculate the volume, but I can't get
to use it.
I built a 1x1x1 cube mitk::Mesh just to test. I can see it on the
screen, it seems perfect. I used
MeshUtil<MeshType>::MeshToPolyData to cast my mitk::Mesh to
a vtkPolyData and it runs without any error message. When I try to
use vtkSmoothPolyDataFilter or vtkMassProperties though, it prints
"No data to smooth!" and "No data to measure...!".
Moreover, I also have a problem to cast from vtkPolyData to
mitk::Mesh. I opened a bug in this http://bugs.mitk.org/show_bug.cgi?id=14956
on this subject because I can't get any MeshType to work and
there's no example anywhere.
So, here's a tl;dr :)
- I still have the "Move some points" problem, which you can read
below in the older message.
- Can I have a working example of a mitk::Mesh -> polyData
-> mitk::Mesh?
Thanks for your time!
Le 2013-04-12 11:10, Nil Goyette a écrit :
Hi, I answered the first question
myself. I thought that "m_Mesh->GetNewCellId();" was creating
the cell, but it appears that we must also use a OpNEWCELL
operation to actually create a cell. I now have a wireframe, as
I wanted. My second question is still valid though.
Move some points
Looking at the code and documentation, I found
MouseMovePointSetInteractor which probably do what I want to do.
However, when I try to use it, it prints these errors:
8.00 core.ia.statemachineFac ERROR: Error in
StateMachineFactory: StartState for pattern
"MouseMovePointSetInteractor"not found! StateMachine might not
work!
8.01 core.ia.statemachine FATAL: [type:
MouseMovePointSetInteractor] Fatal Error in
mitkStateMachine.cpp: Initialization of statemachine
unsuccessfull! Initialize GlobalInteraction!
So I add
mitk::GlobalInteraction::GetInstance()->Initialize("wathever");
and it prints "7.99 core.ia.globalinteraction WARNING: Global
Interaction has already been initialized."
How am I supposed to use this interactor?
Calculate the volume.
No news on that. I'm still unsure about what class to use. Can
you please tell me what would be the mitk way to calculate the
volume of a mesh?
Le 2013-04-09 18:10, Nil Goyette a écrit :
Hi, I've been playing with mitk::Mesh after collecting a set of
points near the pericardium (still need to work on that!). You
can see the results here : http://i.imgur.com/Wrusa3b.jpg.
I think I got it right (setting points to positions, asking for
a new cell, adding lines using positions, repeat.), but I'm not
sure about some things :
- Is there a way to see the mesh in a practical manner? Like
a "3d mesh" on google image. I tried changing the properties
using the Property List, but only "visible" and "name"
actually change something. A good visualization will help me
ensure that the mesh is well built.
- It will be important for us to a) move some points
using the viewer and b) calculate the volume of the
heart. Will it be possible with mitk::Mesh? If not, can you
please recommend other classes which would help us?
Thanks
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