/*=========================================================================

  Program:   Visualization Toolkit
  Module:    TestCameraWidget.cxx

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
//
// This example tests the vtkCameraWidget.

// First include the required header files for the VTK classes we are using.
#include "vtkSmartPointer.h"

#include "vtkCameraWidget.h"
#include "vtkCameraRepresentation.h"
#include "vtkSphereSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkCommand.h"
#include "vtkTesting.h"

int TestCameraWidget(int argc, char *argv[])
{
  // Create the RenderWindow, Renderer and both Actors
  //
  vtkSmartPointer<vtkRenderer> ren1 =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renWin =
    vtkSmartPointer<vtkRenderWindow>::New();
  renWin->AddRenderer(ren1);

  vtkSmartPointer<vtkRenderWindowInteractor> iren =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  iren->SetRenderWindow(renWin);

  // Create a test pipeline
  //
  vtkSmartPointer<vtkSphereSource> ss =
    vtkSmartPointer<vtkSphereSource>::New();
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(ss->GetOutputPort());
  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);

  // Create the widget
  vtkSmartPointer<vtkCameraRepresentation> rep =
    vtkSmartPointer<vtkCameraRepresentation>::New();
  rep->SetNumberOfFrames(2400);

  vtkSmartPointer<vtkCameraWidget> widget =
    vtkSmartPointer<vtkCameraWidget>::New();
  widget->SetInteractor(iren);
  widget->SetRepresentation(rep);

  // Add the actors to the renderer, set the background and size
  //
  ren1->AddActor(actor);
  ren1->SetBackground(0.1, 0.2, 0.4);
  renWin->SetSize(300, 300);

  // render the image
  //
  iren->Initialize();
  renWin->Render();
  rep->SetCamera(ren1->GetActiveCamera());
  widget->On();

  int retVal = vtkTesting::InteractorEventLoop(
    argc, argv, iren);

  return retVal;
}