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

  Program:   Visualization Toolkit
  Module:    TestConstrainedHandleWidget.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 vtkHandleWidget with a 2D representation

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

#include "vtkActor2D.h"
#include "vtkCamera.h"
#include "vtkCommand.h"
#include "vtkConstrainedPointHandleRepresentation.h"
#include "vtkCoordinate.h"
#include "vtkHandleWidget.h"
#include "vtkImageActor.h"
#include "vtkImageData.h"
#include "vtkImageMapper3D.h"
#include "vtkImageShiftScale.h"
#include "vtkInteractorEventRecorder.h"
#include "vtkPlane.h"
#include "vtkProperty2D.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkTestUtilities.h"
#include "vtkVolume16Reader.h"

int TestConstrainedHandleWidget(int argc, char* argv[])
{
  char* fname = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/headsq/quarter");

  vtkSmartPointer<vtkVolume16Reader> v16 = vtkSmartPointer<vtkVolume16Reader>::New();
  v16->SetDataDimensions(64, 64);
  v16->SetDataByteOrderToLittleEndian();
  v16->SetImageRange(1, 93);
  v16->SetDataSpacing(3.2, 3.2, 1.5);
  v16->SetFilePrefix(fname);
  v16->ReleaseDataFlagOn();
  v16->SetDataMask(0x7fff);
  v16->Update();
  delete[] fname;

  double range[2];
  v16->GetOutput()->GetScalarRange(range);

  vtkSmartPointer<vtkImageShiftScale> shifter = vtkSmartPointer<vtkImageShiftScale>::New();
  shifter->SetShift(-1.0 * range[0]);
  shifter->SetScale(255.0 / (range[1] - range[0]));
  shifter->SetOutputScalarTypeToUnsignedChar();
  shifter->SetInputConnection(v16->GetOutputPort());
  shifter->ReleaseDataFlagOff();
  shifter->Update();

  vtkSmartPointer<vtkImageActor> imageActor = vtkSmartPointer<vtkImageActor>::New();
  imageActor->GetMapper()->SetInputConnection(shifter->GetOutputPort());
  imageActor->VisibilityOn();
  //  imageActor->SetDisplayExtent(0, 63, 0, 63, 46, 46);
  imageActor->SetDisplayExtent(0, 63, 30, 30, 0, 92);
  imageActor->InterpolateOn();

  // 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);

  vtkSmartPointer<vtkConstrainedPointHandleRepresentation> handleRep =
    vtkSmartPointer<vtkConstrainedPointHandleRepresentation>::New();
  handleRep->ActiveRepresentationOn();

  vtkSmartPointer<vtkHandleWidget> handleWidget = vtkSmartPointer<vtkHandleWidget>::New();
  handleWidget->SetInteractor(iren);
  handleWidget->SetRepresentation(handleRep);

  ren1->AddActor(imageActor);

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

  handleRep->SetPosition(imageActor->GetCenter());
  handleRep->SetProjectionNormalToYAxis();
  handleRep->SetProjectionPosition(imageActor->GetCenter()[1]);

  double bounds[6];
  imageActor->GetBounds(bounds);

  vtkSmartPointer<vtkPlane> p1 = vtkSmartPointer<vtkPlane>::New();
  p1->SetOrigin(bounds[0], bounds[2], bounds[4]);
  p1->SetNormal(1.0, 0.0, 0.0);

  vtkSmartPointer<vtkPlane> p2 = vtkSmartPointer<vtkPlane>::New();
  p2->SetOrigin(bounds[0], bounds[2], bounds[4]);
  p2->SetNormal(0.0, 0.0, 1.0);

  vtkSmartPointer<vtkPlane> p3 = vtkSmartPointer<vtkPlane>::New();
  p3->SetOrigin(bounds[1], bounds[3], bounds[5]);
  p3->SetNormal(-1.0, 0.0, 0.0);

  vtkSmartPointer<vtkPlane> p4 = vtkSmartPointer<vtkPlane>::New();
  p4->SetOrigin(bounds[1], bounds[3], bounds[5]);
  p4->SetNormal(0.0, 0.0, -1.0);

  handleRep->AddBoundingPlane(p1);
  handleRep->AddBoundingPlane(p2);
  handleRep->AddBoundingPlane(p3);
  handleRep->AddBoundingPlane(p4);

  // render the image
  //
  ren1->GetActiveCamera()->SetPosition(0, 0, 0);
  ren1->GetActiveCamera()->SetFocalPoint(0, 1, 0);
  ren1->GetActiveCamera()->SetViewUp(0, 0, 1);
  ren1->ResetCamera();
  iren->Initialize();
  renWin->Render();

  iren->Start();

  return EXIT_SUCCESS;
}