src/rcrt/math/Vec3D.h

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#ifndef VEC3D_H_
#define VEC3D_H_

#include <iostream>

namespace rcrt
{

class Vec3D
{
        friend Vec3D operator*(const float& f, const Vec3D& vec);
        
private:
        float values[3];
        void assign(const Vec3D& vec);
        
public:
        Vec3D();
        Vec3D(const float& val);
        Vec3D(const float& xc, const float& yc, const float& zc);
        Vec3D(const Vec3D& vec);
        virtual ~Vec3D();
        
        const Vec3D& operator= (const Vec3D& vec);
        Vec3D operator+ (const Vec3D& vec) const;
        Vec3D operator- (const Vec3D& vec) const;
        float operator* (const Vec3D& vec) const;
        float operator[] (int i) const;
        float& operator[] (int i);
        bool operator!= (const Vec3D& p) const;
        bool operator== (const Vec3D& p) const;
        
        Vec3D operator* (const float& f) const;
        Vec3D operator/ (const float& f) const;
        
        Vec3D crossP(const Vec3D& vec) const;
        Vec3D abs() const;
        const Vec3D& normalize();
        Vec3D normalized() const;
        float norm() const;
        Vec3D reflect(const Vec3D& normal) const;
        void getCS(Vec3D& u, Vec3D& v) const;
        
        const float& x() const;
        const float& y() const;
        const float& z() const;
};

//Friends of Vec3D
//we have to include these in the header

inline Vec3D operator*(const float& f, const Vec3D& vec)
{
    return Vec3D(f*vec.values[0], f*vec.values[1], f*vec.values[2]);
}

inline std::ostream& operator<<(std::ostream& o, const Vec3D& v)
{
        o << "V3D(" << v.x() << "," << v.y() << "," << v.z() << ")";
        return o;
}


}

#endif /*VEC3D_H_*/

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