[vtkusers] MIP Projection on a 3D Plane

[Jon Haitz Legarreta]

Hi Jose Ignacio,
although I have not compiled and run the Medical1 example myself, some
general rules that may help you are the following.

Each object has its own mapper. If you have all objects int eh samen
window, you are sharing the renderwindow, which has its renderer and its
the interactor.

When you modify a property such as the zoom or the angle, the
rendererwindow should be updated; a way to do (force) it is to call the
renderwindow's Render() method.

If you have multiple windows or scenes, each scene may be a renderwindow
and you should take care of synchronizing the events.

HTH,
JON HAITZ


On 15 April 2013 15:03, Jose Ignacio Prieto <joseignacio.prieto at gmail.com>wrote:

> Hi Jon, I wan to modify Medical1 example, so I still have the skin
> contour in the center of the screen and have an MIP projection of the
> volume in a 2D plane to the right of the contour, so you can see both
> things at the same time. I want the projection to update itself if I
> change the zoom,  view angle or contrast. It would be similar as the
> software 3dSlicer, where you have a volume in one window and the
> projection in another. I don't know if this is one mapper and two
> actors, of they just share the data source and the mouse interaction
> is deliberately done in both windows. Thanks
>
> On Fri, Apr 12, 2013 at 6:36 PM, Jon Haitz Legarreta
> <jhlegarreta at vicomtech.org> wrote:
> > Dear Jose Ignacio,
> > if I understand well, you mean having a volume render of the heart and
> > showing an arbitrary 2D plane together, in the same scene. This is
> > definitely possible.
> >
> > You must just have all the necessary input data (your volume and have
> your
> > 2D cut computed) and then add the necessary actors to the scene.
> >
> > If you need more precise answers or directions, you may want to give
> further
> > details.
> >
> > HTH,
> > JON HAITZ
> >
> >
> > On 12 April 2013 15:13, Jose Ignacio Prieto <
> joseignacio.prieto at gmail.com>
> > wrote:
> >>
> >> Hi, is this too complicated? Has somebody done anything similar?
> >> Gracias!
> >>
> >> On Thu, Apr 11, 2013 at 10:17 AM, Jose Ignacio Prieto
> >> <joseignacio.prieto at gmail.com> wrote:
> >> > Hi all,
> >> > I am starting with VTK, ran some examples and now I am trying to
> >> > display a volume (like an isosurface of a heart) and next to it, a
> >> > plane (let's say in an angle of 45 degree to the camera) where you
> >> > could get the MIP projection of the heart. So when you rotate the
> >> > isosurface, then the MIP would change as well and it would be "easier"
> >> > to visualize what are you looking at. I think it is like the shadows
> >> > example (
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/Shadows)
> >> > , but instead of a light it would be a projector of "xrays" to a
> >> > screen. Is it possible to build it?
> >> > Thanks!
> >> > Jose
> >> >
> >> > --
> >> > José Ignacio Prieto
> >> > celular(nuevo): 94348182
> >>
> >>
> >>
> >> --
> >> José Ignacio Prieto
> >> celular(nuevo): 94348182
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>
>
> --
> José Ignacio Prieto
> celular(nuevo): 94348182
>
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