Examples/SpatialObjects/VesselTubeSpatialObject.cxx

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 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
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// Software Guide : BeginLatex
//
// \index{itk::VesselTubeSpatialObject}
//
// \doxygen{VesselTubeSpatialObject} derives from \doxygen{TubeSpatialObject}.
// It represents a blood vessel segmented from an image.
// A VesselTubeSpatialObject is described as a list of centerline points which
// have a position, a radius, and normals.
//
// Let's start by including the appropriate header file.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
#include "itkTubeSpatialObject.h"
// Software Guide : EndCodeSnippet

int main( int , char *[] )
{

// Software Guide : BeginLatex
//
// VesselTubeSpatialObject is templated over the dimension of the space.  A
// VesselTubeSpatialObject contains a list of VesselTubeSpatialObjectPoints.
//
// First we define some type definitions and we create the tube.
//
// Software Guide : EndLatex

  unsigned int i;

// Software Guide : BeginCodeSnippet
  using VesselTubeType = itk::TubeSpatialObject<3>;
  using VesselTubePointType = VesselTubeType::TubePointType;

  using PointType = VesselTubeType::PointType;

  VesselTubeType::Pointer vesselTube = VesselTubeType::New();
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
//
// We create a point list and we set:
// \begin{enumerate}
// \item The position of each point in the local coordinate system using the
// \code{SetPosition()} method.
// \item The radius of the tube at this position using \code{SetRadius()}.
// \item The medialness value describing how the point lies in the middle of the vessel using \code{SetMedialness()}.
// \item The ridgeness value describing how the point lies on the ridge using \code{SetRidgeness()}.
// \item The branchness value describing if the point is a branch point using \code{SetBranchness()}.
// \item The three alpha values corresponding to the eigenvalues of the Hessian
//  using \code{SetAlpha1()},\code{SetAlpha2()} and \code{SetAlpha3()}.
// \item The mark value using \code{SetMark()}.
// \item The color of the point is set to red in this example with an opacity of 1.
// \end{enumerate}
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  VesselTubeType::TubePointListType list;
  for (i=0; i<5; ++i)
    {
    VesselTubePointType p;
    PointType pnt;
    pnt[0] = i;
    pnt[1] = i+1;
    pnt[2] = i+2;
    p.SetPositionInObjectSpace(pnt);
    p.SetRadiusInObjectSpace(1);
    p.SetAlpha1(i);
    p.SetAlpha2(i+1);
    p.SetAlpha3(i+2);
    p.SetMedialness(i);
    p.SetRidgeness(i);
    p.SetBranchness(i);
    p.SetColor(1,0,0,1);
    list.push_back(p);
    }
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
//
// Next, we create the tube and set its name using \code{SetName()}. We also
// set its identification number with \code{SetId()} and, at the end, we add
// the list of points previously created.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  vesselTube->GetProperty().SetName("VesselTube");
  vesselTube->SetId(1);
  vesselTube->SetPoints(list);
  vesselTube->Update();
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
//
// The \code{GetPoints()} method return a reference to the internal list of
// points of the object.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  VesselTubeType::TubePointListType pointList = vesselTube->GetPoints();
  std::cout << "Number of points representing the blood vessel: ";
  std::cout << pointList.size() << std::endl;
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
//
// Then we can access the points using STL iterators.  \code{GetPosition()}
// and \code{GetColor()} functions return respectively the position and the
// color of the point.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  VesselTubeType::TubePointListType::const_iterator
            it = vesselTube->GetPoints().begin();
  i=0;
  while(it != vesselTube->GetPoints().end())
    {
    std::cout << std::endl;
    std::cout << "Point #" << i << std::endl;
    std::cout << "Position: " << (*it).GetPositionInObjectSpace() << std::endl;
    std::cout << "Radius: " << (*it).GetRadiusInObjectSpace() << std::endl;
    std::cout << "Medialness: " << (*it).GetMedialness() << std::endl;
    std::cout << "Ridgeness: " << (*it).GetRidgeness() << std::endl;
    std::cout << "Branchness: " << (*it).GetBranchness() << std::endl;
    std::cout << "Alpha1: " << (*it).GetAlpha1() << std::endl;
    std::cout << "Alpha2: " << (*it).GetAlpha2() << std::endl;
    std::cout << "Alpha3: " << (*it).GetAlpha3() << std::endl;
    std::cout << "Color = " << (*it).GetColor() << std::endl;
    ++it;
    ++i;
    }
// Software Guide : EndCodeSnippet

  return EXIT_SUCCESS;
}