vuVector.h

/* Written by Steven Kilthau */

#ifndef _VECTOR_H_
#define _VECTOR_H_

#include <iostream>

#include "vuSimpleTypes.h"

class vuVector; //forward declaration.
typedef vuVector* vuVectorPointer;
typedef vuVectorPointer* vuVectorPointerArray;

class vuMatrix;


class vuVector
{
friend class vuMatrix;
public:
    vuVector();
    vuVector(const vuVector& v);
    vuVector(double v1, double v2, double v3);
    vuVector(double v1, double v2, double v3, double v4);
    vuVector(double v);

    vuVector(const double* v);
    ~vuVector();

    vuVector& operator=(const vuVector& v);
    vuVector& operator=(double v);
    vuVector& operator=(const double* v);

    double norm(void) const;
    double norm2(void) const;


    vuVector& makeUnit(void);

    vuVector& normalize(void);


    vuVector inv(void) const;
    vuVector& invEq(void);
    vuVector mul(const vuVector& rhs) const;
    vuVector& mulEq(const vuVector& rhs);
    vuVector div(const vuVector& rhs) const;
    vuVector& divEq(const vuVector& rhs);

    double& operator[](dword index);
    const double& operator[](dword index) const;


    double* getData(void);
    double const* getData(void) const;
    
    friend double dot(const vuVector& v1,const vuVector& v2);
    friend vuVector cross(const vuVector& v1,const vuVector& v2);
    double dot(const vuVector& v) const;
    vuVector cross(const vuVector& v) const;

    vuVector operator+(const vuVector& v) const;
    vuVector operator-(const vuVector& v) const;
    vuVector operator*(const vuMatrix& m) const;
    vuMatrix operator*(const vuVector& v) const;
    vuVector operator*(double s) const;
    vuVector vuVector::operator/(double s) const;
    friend const vuVector operator*(double s, const vuVector& v);
    vuVector& operator+=(const vuVector& v);
    vuVector& operator-=(const vuVector& v);
    vuVector& operator*=(const vuMatrix& m);
    vuVector& operator*=(double s);

    bool operator==(const vuVector& v) const;
    bool operator!=(const vuVector& v) const;

    int getDominantAxis() const;

    friend std::ostream& operator<<(std::ostream& out,const vuVector& v);
    friend std::istream& operator>>(std::istream& in, vuVector& v);

private:
    double val[4];
};

#endif

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