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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkArrowSpatialObject.h,v $
  Language:  C++
  Date:      $Date: 2005/07/26 16:22:35 $
  Version:   $Revision: 1.4 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.

=========================================================================*/
#ifndef __itkArrowSpatialObject_h
#define __itkArrowSpatialObject_h

#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif

#include "itkSpatialObject.h"

namespace itk 
{

/** 
* \class ArrowSpatialObject
* \brief Representation of a Arrow based on the spatial object classes.
*
* A ArrowSpatialObject represents a Arrow by serving as the parent of
* the elements of the Arrow.  Since any itk::SpatialObject can have
* children (see SpatialObject::GetChildren()), this class needs no
* additional methods.
*/

template < unsigned int TDimension = 3 >
class ArrowSpatialObject 
  :public SpatialObject< TDimension >
{

public:

  typedef ArrowSpatialObject                     Self;
  typedef SpatialObject< TDimension >            Superclass;
  typedef SmartPointer < Self >                  Pointer;
  typedef SmartPointer < const Self >            ConstPointer;
  typedef double                                 ScalarType;
  typedef Vector<double,TDimension>              VectorType;
  typedef Point<double,TDimension>               PointType;
  typedef typename Superclass::TransformType     TransformType;
  typedef typename TransformType::MatrixType     MatrixType;


  /** Method for creation through the object factory. */
  itkNewMacro( Self );

  /** Method for creation through the object factory. */
  itkTypeMacro( ArrowSpatialObject, SpatialObject );


  /** Set the position of the arrow */
  void SetPosition(const PointType & p)
    {
    m_Position = p;
    this->UpdateTransform();
    }

  itkGetConstMacro(Position,PointType);

  void SetPosition(float x, float y)
    {
    m_Position[0] = x;
    m_Position[1] = y;
    this->UpdateTransform();
    }

  void SetPosition(float x, float y,float z)
    {
    m_Position[0] = x;
    m_Position[1] = y;
    m_Position[2] = z;
    this->UpdateTransform();
    }

  /** Set the direction of the arrow */
  void SetDirection(const VectorType & d)
    {
    m_Direction = d;
    this->UpdateTransform();
    }
  
  itkGetConstMacro(Direction,VectorType);
  
  void SetDirection(float x, float y)
    {
    m_Direction[0] = x;
    m_Direction[1] = y;
    this->UpdateTransform();
    }

  void SetDirection(float x, float y,float z)
    {
    m_Direction[0] = x;
    m_Direction[1] = y;
    m_Direction[2] = z;
    this->UpdateTransform();
    }

  /** Set the length of the arrow */
  void SetLength(double length);
  void SetLenght(double length){this->SetLength(length); return;}

  /** Get the length of the arrow */
  itkGetMacro(Length,double);

  /** Get the length of the arrow. NOTE the misspelling of
    * length. This method is included for backward compatibility. */
  double GetLenght() {return this->GetLength();}

  /** Compute the local bounding box */
  bool ComputeLocalBoundingBox() const;

  /** Returns true if the point is inside the line, false otherwise. */
  bool IsInside( const PointType & point, 
                 unsigned int depth, char * name) const;

  /** Test whether a point is inside or outside the object 
   *  For computational speed purposes, it is faster if the method does not
   *  check the name of the class and the current depth */ 
  virtual bool IsInside( const PointType & point) const;


protected:

  ArrowSpatialObject();
  virtual ~ArrowSpatialObject();

  /** Update the transformation given the position and the direction */
  void UpdateTransform();

  /** Method to print the object.*/
  virtual void PrintSelf( std::ostream& os, Indent indent ) const;

private:

  VectorType   m_Direction;
  PointType    m_Position;
  double       m_Length;

};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION 
#include "itkArrowSpatialObject.txx" 
#endif 

#endif // __itkArrowSpatialObject_h
