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375 lines (253 loc) · 10.6 KB
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#ifndef BL_POINT2D_HPP
#define BL_POINT2D_HPP
///-------------------------------------------------------------------
///
///
///
/// PURPOSE: A simple 2d point class
///
/// AUTHOR: Vincenzo Barbato
/// navyenzo@gmail.com
///
/// NOTE: All things in this library are defined within the
/// blMathAPI namespace
///
/// LISENSE: MIT-LICENCE
/// http://www.opensource.org/licenses/mit-license.php
///
///
///
///-------------------------------------------------------------------
//-------------------------------------------------------------------
// NOTE: This class is defined within the blMathAPI namespace
//-------------------------------------------------------------------
namespace blMathAPI
{
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
class blPoint2d
{
public: // Constructors and destructors
// Default constructor
blPoint2d(const blNumberType& x = 0,const blNumberType& y = 0);
// Copy constructor
template<typename blNumberType2>
blPoint2d(const blPoint2d<blNumberType2>& point);
// Destructor
~blPoint2d();
public: // Overloaded operators
template<typename blNumberType2>
blPoint2d<blNumberType>& operator=(const blPoint2d<blNumberType2>& point);
bool operator==(const blPoint2d<blNumberType>& point)const;
bool operator!=(const blPoint2d<blNumberType>& point)const;
const blPoint2d<blNumberType> operator-()const;
blPoint2d<blNumberType>& operator+=(const blPoint2d<blNumberType>& point);
blPoint2d<blNumberType>& operator-=(const blPoint2d<blNumberType>& point);
blPoint2d<blNumberType>& operator*=(const blNumberType& scalar);
blPoint2d<blNumberType>& operator/=(const blNumberType& scalar);
const blPoint2d<blNumberType> operator+(const blPoint2d<blNumberType>& point)const;
const blPoint2d<blNumberType> operator-(const blPoint2d<blNumberType>& point)const;
const blPoint2d<blNumberType> operator*(const blNumberType& scalar)const;
const blPoint2d<blNumberType> operator/(const blNumberType& scalar)const;
// Dot product
const blNumberType operator*(const blPoint2d<blNumberType>& point)const;
public: // Public functions
// Functions used to get/set
// the point's coordinates
const blNumberType& x()const;
const blNumberType& y()const;
blNumberType& x();
blNumberType& y();
private: // Private variables
// The point's x and y
// coordinates
blNumberType m_x;
blNumberType m_y;
};
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType>::blPoint2d(const blNumberType& x,const blNumberType& y)
{
m_x = x;
m_y = y;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
template<typename blNumberType2>
inline blPoint2d<blNumberType>::blPoint2d(const blPoint2d<blNumberType2>& point)
{
m_x = static_cast<blNumberType>(point.x());
m_y = static_cast<blNumberType>(point.y());
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType>::~blPoint2d(void)
{
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
template<typename blNumberType2>
inline blPoint2d<blNumberType>& blPoint2d<blNumberType>::operator=(const blPoint2d<blNumberType2>& point)
{
if(this != &point)
{
m_x = static_cast<blNumberType>(point.x());
m_y = static_cast<blNumberType>(point.y());
}
return (*this);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blNumberType& blPoint2d<blNumberType>::x()const
{
return m_x;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blNumberType& blPoint2d<blNumberType>::y()const
{
return m_y;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blNumberType& blPoint2d<blNumberType>::x()
{
return m_x;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blNumberType& blPoint2d<blNumberType>::y()
{
return m_y;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blPoint2d<blNumberType> blPoint2d<blNumberType>::operator-()const
{
return blPoint2d<blNumberType>(-m_x,-m_y);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline bool blPoint2d<blNumberType>::operator==(const blPoint2d<blNumberType>& point)const
{
// Check the components
if(m_x != point.x())
return false;
if(m_y != point.y())
return false;
// By now we know the
// components match so
// the points are equal
return true;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline bool blPoint2d<blNumberType>::operator!=(const blPoint2d<blNumberType>& point)const
{
// Check the components
if(m_x != point.x())
return true;
if(m_y != point.y())
return true;
// By now we know the
// components match so
// the points are equal
return false;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType>& blPoint2d<blNumberType>::operator+=(const blPoint2d<blNumberType>& point)
{
m_x += point.x();
m_y += point.y();
return (*this);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType>& blPoint2d<blNumberType>::operator-=(const blPoint2d<blNumberType>& point)
{
m_x -= point.x();
m_y -= point.y();
return (*this);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType>& blPoint2d<blNumberType>::operator*=(const blNumberType& scalar)
{
m_x *= scalar;
m_y *= scalar;
return (*this);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType>& blPoint2d<blNumberType>::operator/=(const blNumberType& scalar)
{
m_x /= scalar;
m_y /= scalar;
return (*this);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline blPoint2d<blNumberType> operator*(const blNumberType& scalar,
const blPoint2d<blNumberType>& point)
{
return point * scalar;
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blPoint2d<blNumberType> blPoint2d<blNumberType>::operator*(const blNumberType& scalar)const
{
return blPoint2d<blNumberType>(m_x * scalar,m_y * scalar);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blPoint2d<blNumberType> blPoint2d<blNumberType>::operator/(const blNumberType& scalar)const
{
return blPoint2d<blNumberType>(m_x / scalar,m_y / scalar);
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blPoint2d<blNumberType> blPoint2d<blNumberType>::operator+(const blPoint2d<blNumberType>& point)const
{
return blPoint2d<blNumberType>(m_x + point.x(),m_y + point.y());
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blPoint2d<blNumberType> blPoint2d<blNumberType>::operator-(const blPoint2d<blNumberType>& point)const
{
return blPoint2d<blNumberType>(m_x - point.x(),m_y - point.y());
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
template<typename blNumberType>
inline const blNumberType blPoint2d<blNumberType>::operator*(const blPoint2d<blNumberType>& point)const
{
return (m_x * point.x() + m_y * point.y());
}
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// End of the blMathAPI namespace
}
//-------------------------------------------------------------------
#endif // BL_POINT2D_HPP