[vtkusers] Combining resliced images and polygons

Fri Mar 26 13:14:19 EDT 2010

Have you set EdgeVisibilityOn() or EdgeVisibilityOff()?

Because only when I set it to off, I get proper colouring but you have
mentioned "ON".

Thanks

Jothy

On Fri, Mar 26, 2010 at 4:39 PM, Scott Johnson <Scott.Johnson at neuwave.com>wrote:

>  Got it.
>
>
>
> clipActor.GetProperty().EdgeVisibilityOn()
>
>
>
> Thanks for your help.
>
>
>
>                                 -- Scott
>
>
>
> *From:* Jothybasu K Selvaraj [mailto:jothybasu at gmail.com]
> *Sent:* Friday, March 26, 2010 11:37 AM
>
> *To:* Scott Johnson
> *Cc:* vtkusers at vtk.org
> *Subject:* Re: [vtkusers] Combining resliced images and polygons
>
>
>
> I am wondering, I too uses a simialr function to cut the sphere and adding
> it to the imageviewer2 and able to display it properly after adding those
> lines. Initially I too had this problem. I am sending you the entire cuttin
> code of mine verify with that.
>
> cutPlane=vtk.vtkPlane()
>          cutPlane.SetOrigin(0,0,SliceNo)
>          cutPlane.SetNormal(0,0,1)
>          cutter=vtk.vtkCutter()
>          cutter.SetCutFunction(cutPlane)
>          cutter.GenerateCutScalarsOff()
>          Color=Object.GetProperty().GetColor()
>          cutter.SetInput(Object.GetMapper().GetInput())
>          cutter.Update()
>
> On Fri, Mar 26, 2010 at 4:34 PM, Scott Johnson <Scott.Johnson at neuwave.com>
> wrote:
>
> I had tried it earlier and it made no difference.  I tried it again, just
> to be sure.  Still no difference.
>
>
>
> Thanks
>
>
>
>                                 -- Scott
>
>
>
> *From:* Jothybasu K Selvaraj [mailto:jothybasu at gmail.com]
> *Sent:* Friday, March 26, 2010 11:32 AM
>
>
> *To:* Scott Johnson
> *Cc:* vtkusers at vtk.org
> *Subject:* Re: [vtkusers] Combining resliced images and polygons
>
>
>
> Did you add Cutter.Update()
>
> Jothy
>
> On Fri, Mar 26, 2010 at 4:30 PM, Scott Johnson <Scott.Johnson at neuwave.com>
> wrote:
>
> Yes.
>
>
>
> clippedROI = vtk.vtkCutter()
>
> clippedROI.SetCutFunction(plane)
>
> clippedROI.GenerateCutScalarsOff()
>
> clippedROI.SetInputConnection(targetSphere.GetOutputPort())
>
>
>
>                                 -- Scott
>
>
>
> *From:* Jothybasu K Selvaraj [mailto:jothybasu at gmail.com]
> *Sent:* Friday, March 26, 2010 11:29 AM
>
>
> *To:* Scott Johnson
> *Cc:* vtkusers at vtk.org
> *Subject:* Re: [vtkusers] Combining resliced images and polygons
>
>
>
> Did you set the generateCutScalarsOff() in cutter?
>
> That is the most important point.
>
> Jothy
>
> On Fri, Mar 26, 2010 at 4:27 PM, Scott Johnson <Scott.Johnson at neuwave.com>
> wrote:
>
> Thanks again Jothy, but it didn’t make any difference.
>
>
>
> My actor definition code now looks like:
>
>
>
> clipActor = vtk.vtkActor()
>
> clipActor.SetMapper(clipMapper)
>
> clipActor.GetProperty().SetLineWidth(10)
>
> clipActor.GetProperty().SetOpacity(1.0)
>
> clipActor.GetProperty().SetColor(1.0, 0.0, 0.0)
>
> clipActor.GetProperty().SetDiffuseColor(1.0, 0.0, 0.0)
>
> clipActor.GetProperty().SetEdgeColor(1.0, 0.0, 0.0)
>
> clipActor.GetProperty().SetDiffuse(0.8)
>
> clipActor.GetProperty().SetSpecular(0.3)
>
> clipActor.GetProperty().SetSpecularPower(20)
>
> clipActor.GetProperty().SetRepresentationToSurface()
>
>
>
> Could it be something in the image viewer?  That code is:
>
> imageViewer = vtk.vtkImageViewer2()
>
> imageViewer.SetupInteractor(interactor)
>
> imageViewer.SetInputConnection(reslice.GetOutputPort())
>
> imageViewer.SetSlice((zMax - zMin) / 2)
>
> imageViewer.GetRenderer().AddActor(clipActor)
>
> imageViewer.GetRenderer().AddActor(annotation)
>
> imageViewer.SetSize(winWidth, winHeight)
>
> imageViewer.SetColorWindow(defaultWindowValue)
>
> imageViewer.SetColorLevel(defaultWindowValue / 2)
>
>
>
> I’ll attach a picture of what I’m seeing.  The confusing part to me is that
> the ‘annotation’ does show up colored as expected.
>
>
>
> Thanks
>
>
>
>                                 -- Scott
>
>
>
> *From:* Jothybasu K Selvaraj [mailto:jothybasu at gmail.com]
> *Sent:* Friday, March 26, 2010 10:22 AM
> *To:* Scott Johnson
> *Cc:* vtkusers at vtk.org
>
>
> *Subject:* Re: [vtkusers] Combining resliced images and polygons
>
>
>
> Set cutter.GenerateCutScalarsOff()
>
>
>
> and
>
> Actor.GetProperty().SetDiffuseColor(color)
> Actor.GetProperty().SetDiffuse(0.8) Actor.GetProperty().SetSpecular(0.3)
>        Actor.GetProperty().SetSpecularPower(20)
>       Actor.GetProperty().SetRepresentationToSurface()
>
> Jothy
>
> On Fri, Mar 26, 2010 at 10:32 AM, Jothybasu K Selvaraj <
> jothybasu at gmail.com> wrote:
>
> Instead of using Clipper use vtkCutter, that will give you a contour not
> half sphere.
>
> Jothy
>
> On Thu, Mar 25, 2010 at 10:14 PM, Scott Johnson <Scott.Johnson at neuwave.com>
> wrote:
>
> Hi Folks,
>
>
>
> I’m looking for a pointer.
>
>
>
> I’m trying to display a resliced image, either axial, coronal, or sagital
> and then display a contour representing the same plane cutting through a
> polygonal shape.  In my current example I have created a sphere which
> intersects some of the image slices.  As I scroll through the slices I
> expect to see circles where the slice intersects the sphere.
>
>
>
> Right now I have created a SphereSource -> ClipPolyData -> PolyDataMapper
> -> Actor.  The ClipPolyData has a plane as the clip function.
>
>
>
> For the images I have ImageReslice -> ImageMapToWindowLevelColors ->
> ImageActor
>
>
>
> Both of these actors are connected to a Renderer and added to a
> RenderWindow.
>
>
>
> What I get is a slice and half of a sphere floating over it.  I can’t get
> the circle to be reflected on the image.  I’ve also tried to use an
> ImageViewer2 for the display to no avail.
>
>
>
> My original plan was to sync the plane definitions in the ImageReslice and
> the clipping plane, but I can’t get past this point.
>
>
>
> This seems much more difficult than it needs to be.  Is there a simpler
> way?
>
>
>
> Thanks
>
>
>
>                                 -- Scott
>
>
>
>
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