[vtkusers] fix position of vtkAxesActor

[Benoist Laurent]

Basically I thought than the vtkSmartPointers were supposed to managed  
this kind of situations...

=====================
axes.cpp
=====================
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkOrientationMarkerWidget.h>
#include <vtkAxesActor.h>
#include <vtkPropAssembly.h>
#include <vtkSmartPointer.h>


/* Do not use ! */
void displayAxes(vtkRenderWindowInteractor *renderWindowInteractor)
{
     vtkSmartPointer<vtkAxesActor> axes =
         vtkSmartPointer<vtkAxesActor>::New();

     vtkSmartPointer<vtkOrientationMarkerWidget> widget =
         vtkSmartPointer<vtkOrientationMarkerWidget>::New();
     widget->SetOutlineColor( 0.9300, 0.5700, 0.1300 );
     widget->SetOrientationMarker( axes );
     widget->SetInteractor( renderWindowInteractor );
     widget->SetViewport( 0.0, 0.0, 0.4, 0.4 );
     widget->SetEnabled( 1 );
     widget->InteractiveOn();
}



int main (int, char *[])
{
     vtkSmartPointer<vtkSphereSource> sphereSource =
         vtkSmartPointer<vtkSphereSource>::New();
     sphereSource->SetCenter(0.0, 0.0, 0.0);
     sphereSource->SetRadius(1.0);
     sphereSource->Update();

     vtkPolyData* polydata = sphereSource->GetOutput();

     // Create a mapper
     vtkSmartPointer<vtkPolyDataMapper> mapper =
         vtkSmartPointer<vtkPolyDataMapper>::New();
     mapper->SetInput(polydata);

     // Create an actor
     vtkSmartPointer<vtkActor> actor =
         vtkSmartPointer<vtkActor>::New();
     actor->SetMapper(mapper);

     // A renderer and render window
     vtkSmartPointer<vtkRenderer> renderer =
         vtkSmartPointer<vtkRenderer>::New();
     vtkSmartPointer<vtkRenderWindow> renderWindow =
         vtkSmartPointer<vtkRenderWindow>::New();
     renderWindow->AddRenderer(renderer);

     // An interactor
     vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
         vtkSmartPointer<vtkRenderWindowInteractor>::New();
     renderWindowInteractor->SetRenderWindow(renderWindow);

     // Add the actors to the scene
     renderer->AddActor(actor);
     renderer->SetBackground(.2, .3, .4);

     // Add the axes
     vtkSmartPointer<vtkAxesActor> axes =
         vtkSmartPointer<vtkAxesActor>::New();

     vtkSmartPointer<vtkOrientationMarkerWidget> widget =
         vtkSmartPointer<vtkOrientationMarkerWidget>::New();
     widget->SetOutlineColor( 0.9300, 0.5700, 0.1300 );
     widget->SetOrientationMarker( axes );
     widget->SetInteractor( renderWindowInteractor );
     widget->SetViewport( 0.0, 0.0, 0.4, 0.4 );
     widget->SetEnabled( 1 );
     widget->InteractiveOn();

     // Render the scene
     renderer->ResetCamera();
     renderWindow->Render();

     // Begin mouse interaction
     renderWindowInteractor->Start();

     return EXIT_SUCCESS;
}

=====================
CMakeLists.txt
=====================
cmake_minimum_required(VERSION 2.6)

PROJECT(AxesIndicator)

FIND_PACKAGE(VTK REQUIRED)
INCLUDE(${VTK_USE_FILE})

ADD_EXECUTABLE(axes axes.cpp)
TARGET_LINK_LIBRARIES(axes vtkHybrid vtkWidgets)
Le 17 sept. 10 à 16:54, David Doria a écrit :

> On Fri, Sep 17, 2010 at 10:57 AM, Benoist Laurent <benoist at ibpc.fr>  
> wrote:
> Hi all,
>
> The example works very well.
> However, when I try to put the code relative to the axes in a  
> different fonction the application crashes.
>
> void displayAxes(vtkRenderWindowInteractor *renderWindowInteractor)
> {
>     vtkSmartPointer<vtkAxesActor> axes =
>         vtkSmartPointer<vtkAxesActor>::New();
>
>     vtkSmartPointer<vtkOrientationMarkerWidget> widget =
>         vtkSmartPointer<vtkOrientationMarkerWidget>::New();
>     widget->SetOutlineColor( 0.9300, 0.5700, 0.1300 );
>     widget->SetOrientationMarker( axes );
>     widget->SetInteractor( renderWindowInteractor );
>     widget->SetViewport( 0.0, 0.0, 0.4, 0.4 );
>     widget->SetEnabled( 1 );
>     widget->InteractiveOn();
> }
>
> So I guess there's something I did not understand with the  
> vtkSmartPointer and/or the vtkWidget.
>
> An idea ?
> Thanks,
>
> Benoist
>
> Benoist,
>
> Can you share a compilable piece of code? I'm  definitely not a  
> smart pointer expert, but I think the pointers defined in your  
> displayAxes will go out of scope when you leave the function.
>
> David

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