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/*
math/axis.h
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#ifndef __INCLUDED_MATH_AXIS_H__
#define __INCLUDED_MATH_AXIS_H__
#include <iostream>
#include "math/vector3f.h"
namespace math
{
/// a local coordinates system
class Axis {
public:
Axis();
Axis(const Axis & other);
void clear();
void assign(const Axis & other);
/// global coordinates of the X-axis in the local coordinates system
inline Vector3f const & forward() { return axis_vector[0]; }
/// global coordinates of the Y-axis in the local coordinates system
inline Vector3f const & left() { return axis_vector[1]; }
/// global coordinates of the Z-axis in the local coordinates system
inline Vector3f const & up() { return axis_vector[2]; }
inline Vector3f const operator[](size_t index) { return axis_vector[index]; }
Axis & operator=(const Axis & other);
/// alter heading, rotate around Z-axis (positive is left)
void direction(const float angle);
/// alter heading, rotate around negative Y-axis (positive is up)
void pitch(const float angle);
private:
Vector3f axis_vector[3];
};
}
#endif // __INCLUDED_MATH_AXIS_H__
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