LittleEngine/Vector2.h at master · dacunni/LittleEngine · GitHub

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#ifndef _VECTOR2_H_
#define _VECTOR2_H_

#include <fstream>
#include <stdio.h>

//
// 2D Vector class
//
class Vector2
{
    public:
        inline Vector2();
        inline Vector2( const Vector2 & a);
        inline Vector2( float x, float y);
        inline ~Vector2() {}

        inline float & operator[]( int i)
        {
            return data[i];
        }

        inline const float & operator[]( int i) const
        {
            return data[i];
        }

        inline void set( float x, float y);

        union {
            float data[2];
            struct {
                float x, y;
            };
        };
};

inline void dot( const Vector2 & a, const Vector2 & b, float & r);
inline void add( const Vector2 & a, const Vector2 & b, Vector2 & r);
inline void subtract( const Vector2 & a, const Vector2 & b, Vector2 & r);
inline void scale( const Vector2 & a, float s, Vector2 & r);
inline void interp( const Vector2 & a, const Vector2 & b, const float alpha, Vector2 & r);

#include "Vector2.hpp"

#endif