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  /*!
    \class SbBox2s SbBox2s.h Inventor/SbBox2s.h
    \brief The SbBox2s class is a 2 dimensional box with short
    integer coordinates.
  
    \ingroup base
  
    This box class is used by other classes in Coin for data
    exchange. It provides storage for two box corners with short integer
    coordinates, which is among other things useful for representing
    screen or canvas areas in absolute window coordinates.
  
    \sa SbBox2f, SbBox2d, SbBox3s, SbBox3f, SbBox3d, SbXfBox3f.
  */
  
  // *************************************************************************
  
  #include <Inventor/SbBox2s.h>
  
  #include <limits>
  #include <cassert>
  
  #include <Inventor/SbBox2i32.h>
  #include <Inventor/SbBox2f.h>
  #include <Inventor/SbBox2d.h>
  #include <Inventor/errors/SoDebugError.h>
  
  // *************************************************************************
  
  /*!
    \fn SbBox2s::SbBox2s(void)
  
    The default constructor makes an empty box.
  */
  
  /*!
    \fn SbBox2s::SbBox2s(short xmin, short ymin, short xmax, short ymax)
  
    Constructs a box with the given corner coordinates.
  
    \a xmin should be less than \a xmax and \a ymin should be less than
    \a ymax if you want to make a valid box.
  */
  
  /*!
    \fn SbBox2s::SbBox2s(const SbVec2s & boxmin, const SbVec2s & boxmax)
  
    Constructs a box with the given corners.
  
    The coordinates of \a min should be less than the coordinates of
    \a max if you want to make a valid box.
  */
  
  /*!
    \fn SbBox2s::SbBox2s(const SbBox2i32 & box)
  
    Constructs an SbBox2s instance from the value in an SbBox2i32 instance.
  
    \since Coin 2.5
  */
  
  /*!
    \fn SbBox2s::SbBox2s(const SbBox2f & box)
  
    Constructs an SbBox2s instance from the value in an SbBox2f instance.
  
    \since Coin 2.5
  */
  
  /*!
    \fn SbBox2s::SbBox2s(const SbBox2d & box)
  
    Constructs an SbBox2s instance from the value in an SbBox2d instance.
  
    \since Coin 2.5
  */
  
  /*!
    \fn SbBox2s & SbBox2s::setBounds(short xmin, short ymin, short xmax, short ymax)
  
    Reset the boundaries of the box.
  
    \a xmin should be less than \a xmax and \a ymin should be less than
    \a ymax if you want to make a valid box.
  
    Returns reference to self.
  
    \sa getBounds().
  */
  
  /*!
    \fn SbBox2s & SbBox2s::setBounds(const SbVec2s & boxmin, const SbVec2s & boxmax)
  
    Reset the boundaries of the box with the given corners.
  
    The coordinates of \a min should be less than the coordinates of
    \a max if you want to make a valid box.
  
    Returns reference to self.
  
    \sa getBounds().
  */
  
  /*!
    Reset the boundaries with the boundaries of the given \a box.
  
    Returns reference to self.
  
    \sa setBounds()
  */
  
  SbBox2s &
  SbBox2s::setBounds(const SbBox2i32 & box)
  {
    if (box.isEmpty()) {
      makeEmpty();
    } else {
      minpt.setValue(box.getMin());
      maxpt.setValue(box.getMax());
    }
    return *this;
  }
  
  /*!
    Reset the boundaries with the boundaries of the given \a box.
  
    Returns reference to self.
  
    \sa setBounds()
  */
  
  SbBox2s &
  SbBox2s::setBounds(const SbBox2f & box)
  {
    if (box.isEmpty()) {
      makeEmpty();
    } else {
      minpt.setValue(box.getMin());
      maxpt.setValue(box.getMax());
    }
    return *this;
  }
  
  /*!
    Reset the boundaries with the boundaries of the given \a box.
  
    Returns reference to self.
  
    \sa setBounds()
  */
  
  SbBox2s &
  SbBox2s::setBounds(const SbBox2d & box)
  {
    if (box.isEmpty()) {
      makeEmpty();
    } else {
      minpt.setValue(box.getMin());
      maxpt.setValue(box.getMax());
    }
    return *this;
  }
  
  /*!
    Marks this as an empty box.
  
    \sa isEmpty().
  */
  void
  SbBox2s::makeEmpty(void)
  {
    minpt.setValue(std::numeric_limits<short>::max(), std::numeric_limits<short>::max());
    maxpt.setValue(-std::numeric_limits<short>::max(), -std::numeric_limits<short>::max());
  }
  
  /*!
    \fn SbBool SbBox2s::isEmpty(void) const
  
    Check if this has been marked as an empty box.
  
    \sa makeEmpty().
  */
  
  /*!
    \fn SbBool SbBox2s::hasArea(void) const
  
    Check if the box has been correctly specified and by that virtue
    has "positive" area, i.e. all coordinates of its upper right corner
    (the maximum point) are greater than the corresponding coordinates 
    of its lower left corner (the minimum point).
  */
  
  /*!
    \fn const SbVec2s & SbBox2s::getMin(void) const
  
    Returns the minimum point. This should usually be the lower left corner
    point of the box.
  
    \sa getOrigin(), getMax().
  */
  
  /*!
    \fn SbVec2s & SbBox2s::getMin(void)
  
    Returns the lower left corner of the box.
  
    \sa getOrigin(), getMax().
  */
  
  /*!
    \fn const SbVec2s & SbBox2s::getMax(void) const
  
    Returns the maximum point. This should usually be the upper right corner
    point of the box.
  
    \sa getMin().
  */
  
  /*!
    \fn SbVec2s & SbBox2s::getMax(void)
  
    Returns the upper right corner of the box.
  
    \sa getMin().
  */
  
  /*!
    \fn SbVec2s SbBox2s::getCenter(void) const
  
    Returns the center point of the box.
  */
  
  /*!
    Extend the boundaries of the box by the given point, i.e. make the
    point fit inside the box if it isn't already within it.
  */
  void
  SbBox2s::extendBy(const SbVec2s & point)
  {
    // The explicit casts are done to humour the HPUX aCC compiler,
    // which will otherwise say ``Template deduction failed to find a
    // match for the call to 'SbMin'''. mortene.
    this->minpt.setValue(SbMin(static_cast<short>(point[0]), static_cast<short>(this->minpt[0])),
                         SbMin(static_cast<short>(point[1]), static_cast<short>(this->minpt[1])));
    this->maxpt.setValue(SbMax(static_cast<short>(point[0]), static_cast<short>(this->maxpt[0])),
                         SbMax(static_cast<short>(point[1]), static_cast<short>(this->maxpt[1])));
  }
  
  /*!
    Extend the boundaries of the box by the given \a box parameter. This
    is equal to calling extendBy() twice with the corner points.
  */
  void
  SbBox2s::extendBy(const SbBox2s & box)
  {
    if (box.isEmpty()) { return; }
  
    this->extendBy(box.getMin());
    this->extendBy(box.getMax());
  }
  
  /*!
    Check if the given point lies within the boundaries of this box.
  */
  SbBool
  SbBox2s::intersect(const SbVec2s & point) const
  {
    if((point[0] >= this->minpt[0]) && (point[0] <= this->maxpt[0]) &&
       (point[1] >= this->minpt[1]) && (point[1] <= this->maxpt[1])) return TRUE;
    return FALSE;
  }
  
  /*!
    Check if \a box lies entirely or partially within the boundaries
    of this box.
  */
  SbBool
  SbBox2s::intersect(const SbBox2s & box) const
  {
    if((box.getMax()[0] < this->getMin()[0]) ||
       (box.getMax()[1] < this->getMin()[1]) ||
       (box.getMin()[0] > this->getMax()[0]) ||
       (box.getMin()[1] > this->getMax()[1])) return FALSE;
    return TRUE;
  }
  
  /*!
    \fn void SbBox2s::getBounds(short & xmin, short & ymin, short & xmax, short & ymax) const
  
    Returns the box boundary coordinates.
  
    \sa setBounds(), getMin(), getMax().
  */
  
  /*!
    \fn void SbBox2s::getBounds(SbVec2s & boxmin, SbVec2s & boxmax) const
  
    Returns the box corner points.
  
    \sa setBounds(), getMin(), getMax().
  */
  
  /*!
    \fn void SbBox2s::getOrigin(short & originX, short & originY) const
  
    Returns the coordinates of the box origin (i.e. the lower left corner).
  
    \sa getMin().
  */
  
  /*!
    \fn void SbBox2s::getSize(short & sizeX, short & sizeY) const
  
    Returns width and height of box.
  */
  
  /*!
    \fn SbVec2s SbBox2s::getSize(void) const
  
    Returns width and height of box as a 2D vector.
  
    \since Coin 3.0
  */
  
  /*!
    \fn float SbBox2s::getAspectRatio(void) const
  
    Returns aspect ratio of box, which is defined as box width divided on
    box height.
  */
  
  /*!
    \fn int operator == (const SbBox2s & b1, const SbBox2s & b2)
    \relates SbBox2s
  
    Check \a b1 and \a b2 for equality.
  */
  
  /*!
    \fn int operator != (const SbBox2s & b1, const SbBox2s & b2)
    \relates SbBox2s
  
    Check \a b1 and \a b2 for inequality.
  */
  
  /*!
    \fn SbBool SbBox2s::hasArea(void) const
  
    Check if the box has been correctly specified and by that virtue
    has "positive" area, i.e. all coordinates of its upper right corner
    (the maximum point) are greater than the corresponding coordinates 
    of its lower left corner (the minimum point).
  */
  
  #ifdef COIN_TEST_SUITE
  BOOST_AUTO_TEST_CASE(checkSize) {
    SbVec2s min(1,2);
    SbVec2s max(3,4);
  
    SbVec2s diff = max - min;
  
    
    SbBox2s box(min, max);
  
    BOOST_CHECK_MESSAGE(box.getSize() == diff,
                        "Box has incorrect size");
  
  }
  #endif //COIN_TEST_SUITE
  