I am starting from scratch (using mitk as a toolkit), so i don't have
access to RequestRenderWindowUpdate.
What I do now is :
ui->myQmitkStdMultiWidget->update();
ui->myQmitkStdMultiWidget->mitkWidget4->update();
ui->myQmitkStdMultiWidget->mitkWidget4->GetRenderWindow()->Render();but
it doesn't work.
I have recently noticed that vtk RotateWXYZ does allow to rotate around a
vector. Is there any way of rotating contents of mitkWidget4 this way?
Z poważaniem,
Wojciech Lassmann
2017-02-28 13:35 GMT+01:00 <mitk-users-requ...@lists.sourceforge.net>:
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> Today's Topics:
>
> 1. Re: Render vtkCamera position update on QMitkRenderWindow
> (Girish Lande)
> 2. Re: using mitkRotationOperation (Albert Alises)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 27 Feb 2017 09:03:18 +0530
> From: Girish Lande <girish.la...@agiliad.com>
> Subject: Re: [mitk-users] Render vtkCamera position update on
> QMitkRenderWindow
> To: Albert Alises <ironicpsy...@gmail.com>
> Cc: mitk-users@lists.sourceforge.net
> Message-ID:
> <CAGOvywZ26Scw28+fARTDW-GnpOv5PtYiLMucdhtC=Pxw34gZmg@
> mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi Albert,
> Can you try changing this position vector.
> currentCamera->SetPosition(0.0,0.0,0.0);
>
> in my observation setPosition actually defines direction vector in which
> camera is looking at the object.
> So I think it should have some direction .
>
> For e.g to look at same object in 3 different directions(standard x,y,z) I
> do this
>
> case 0:
>
> cam->SetFocalPoint(0,0,0);
>
> cam->SetPosition(1,0,0);
>
> cam->SetViewUp(0,0,1);
>
> break;
>
>
> case 1:
>
> cam->SetFocalPoint(0,0,0);
>
> cam->SetPosition(0,-1,0);
>
> cam->SetViewUp(0,0,1);
>
> break;
>
>
> case 2:
>
> cam->SetFocalPoint(0,0,0);
>
> cam->SetPosition(0,0,1);
>
> cam->SetViewUp(0,1,0);
>
> break;
>
>
>
> regards,
> Girish
>
>
> On 24 February 2017 at 19:50, Albert Alises <ironicpsy...@gmail.com>
> wrote:
>
> > Hello Ingmar,
> >
> > Thank you for your response! I did try to do that but unfortunately the
> > scene keeps going black after executing these changes. Calling any event
> on
> > the window makes the view to render correctly (wheel event, or just
> moving
> > around), so it has to be a method called when doing that on a
> > QmitkRenderWindow, just cannot seem to find it...
> >
> > Thank you,
> > Albert.
> >
> > 2017-02-24 15:05 GMT+01:00 Ingmar Wegner <iweg...@gmx.de>:
> >
> >> Hi Albert,
> >> did you try orthogonalizing the view up vector before calling
> >> RequestUpdate?
> >>
> >> currentCamera->OrthogonalizeViewUp();
> >>
> >> mitk::RenderingManager::GetInstance()->RequestUpdateAll(
> >> mitk::RenderingManager::REQUEST_UPDATE_3DWINDOWS);// For 3D widget only
> >>
> >> This recomputes the view up vector to force it to be perpendicular to
> >> camera->focal point vector. (See vtkCamera docu)
> >>
> >> Ingmar
> >>
> >> (Written on cellphone)
> >>
> >> Am 24.02.2017, 13:13, Albert Alises <ironicpsy...@gmail.com> schrieb:
> >>
> >>> Hello everyone,
> >>>
> >>> I am having trouble rendering the update of a vtkCamera on a
> >>> QMitkRenderWindow. I have a renderWindow which looks at a given scene.
> I
> >>> get its associated* vtkRenderWindow* and from it, the* ActiveCamera()*
> >>> (Which is a vtkCamera object).
> >>>
> >>> I then modify the position and the view of that camera by doing that:
> >>>
> >>> currentCamera->SetPosition(0.0,0.0,0.0);
> >>> currentCamera->SetViewUp(1.0,0.0,0.0);
> >>> currentCamera->SetFocalPoint(0.7, 0.3, 0.4);
> >>> vtkTransform* translationToPoint = vtkTransform::New();
> >>> translationToPoint->Translate(40, 20, 30);
> >>> currentCamera->ApplyTransform(translationToPoint);
> >>>
> >>>
> >>> After applying these transformations, the renderwindow turns black,
> >>> which suggests that the render has not been updated. I have tried:
> >>>
> >>> currentCamera->Modified();
> >>> this->RequestRenderWindowsUpdate();
> >>> Paint method of the Base Renderer from MITK
> >>> vtkRenderWindow->Update();
> >>>
> >>> and rendering the camera, render windows, renderer associated.... None
> >>> of them is working though.... However, the rendering is updated
> correctly
> >>> when scrolling on the window with the mouse. Which method is the
> correct
> >>> one to call for the window to show the new scene after modifying the
> >>> vtkCamera associated to a the window? (the one the WheelEvent method
> on the
> >>> QMitkRenderWindows seems to call).
> >>>
> >>> Thank you very much,
> >>> Albert.
> >>> ------------------------------------------------------------
> ------------------
> >>> Check out the vibrant tech community on one of the world's most
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> >>> lists/listinfo/mitk-users
> >>
> >>
> >
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>
>
> --
> thanks & regards,
> Girish
>
> --
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> Message: 2
> Date: Tue, 28 Feb 2017 13:35:39 +0100
> From: Albert Alises <ironicpsy...@gmail.com>
> Subject: Re: [mitk-users] using mitkRotationOperation
> To: Wojciech Lassmann <neurobo...@gmail.com>
> Cc: mitk-users@lists.sourceforge.net
> Message-ID:
> <CAGjZvMwJAmY2pLG4Qza5h1P=MC76TFv_kcjx2tSMjf9nxL4R7A@mail.
> gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello Wojciech,
>
> The mitk Rotation Operation works as follows:
>
> The first parameter indicates which operation do you want to perform, in
> our case the rotation, so the first parameter is *mitk::OpROTATE* instead
> of 1. The second parameter indicates the point to rotate around. by setting
> it to *geo->GetCenterInWorld() *, you are rotating around the center of
> your view, which is correct based on your goals. The third and four
> parameters refer to the vector of rotation and angle of rotation,
> respectively. That is, they represent a rotation in *Axis-Angle *form.
>
> In your case, you are rotating an angle given by *position *(MITK treats
> them as non radian angles), *around the axis* defined by vector (in your
> case, (0,1,0), but note that you assigned the position 0 of the vector 3
> times! instead of: mitk::Vector3D vector = mitk::Vector3D();
> vector[0]=0.0;
> vector[1]=1.0;
> vector[2]=0.0;)
>
> Once defined this operation, you apply it to your geometry such as:
>
>
>
> * geo->ExecuteOperation(op);*
> And update the geometry. Try defining the rotation with the parameters
> mentioned above and also render again using *this->
> RequestRenderWindowUpdate
> *and see if it works.
>
> Cheers,
>
> 2017-02-27 0:20 GMT+01:00 Wojciech Lassmann <neurobo...@gmail.com>:
>
> > Hi, i have problem.
> > I want to rotate the mitkWidget4 cotents arround 3 perpendicular vectors
> > (that would rotate with the world)
> > I allready know that VTK functions are not much of a help, as they rotate
> > around static axis, And i want to try with mitkRotationOperation, but
> seems
> > thet i dont understand it.
> >
> > i use qt slider moved signal to trigger the slot, and read its position
> >
> > qDebug() <<QString(position); //to check if is propperly trigered
> >
> > // typedef mitk::Vector<ScalarType, 3> Vector3D;
> > mitk::Vector3D vector = mitk::Vector3D();
> > vector[0]=0.0;
> > vector[0]=1.0;
> > vector[0]=0.0;
> >
> > mitk::RotationOperation* op = new mitk::RotationOperation(1, //i dont
> > actually know what does tis fo as it just an int, what value should it
> have
> > geo->GetCenterInWorld(), //where geo is time geometry of the data storage
> > initialising the views
> > vector,
> > (double)position); //which is the slider value
> > geo->ExecuteOperation(op);
> > ui->view2->mitkWidget4->update(); //where view2 is my temorary name
> > for QmitkStdMultiWidget
> >
> > This doesn't seem to do anything, and I have no Idea why.
> >
> > (http://docs.mitk.org/2015.05/GeometryOverviewPage.html
> *geometry->GetVtkMatrix()->Rotate()
> > *mentioned at the end of the page doesn't seem to exist anymore)
> >
> > With Regards,
> > Wojciech Lassmann
> >
> > ------------------------------------------------------------
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> >
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