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#ifndef VEC3_H
#define VEC3_H
#include <iostream>
#include "fml.h"
namespace fml {
class quat;
class vec3 {
public:
scalar v[3];
public:
vec3();
vec3(scalar x);
vec3(scalar x, scalar y, scalar z);
scalar &operator[](int index);
scalar operator[](int index) const;
vec3 operator*(scalar scale) const;
vec3 operator/(scalar scale) const;
vec3 operator+(const vec3 &other) const;
vec3 operator-(const vec3 &other) const;
vec3 operator-() const;
const vec3 &operator*=(scalar scale);
const vec3 &operator/=(scalar scale);
const vec3 &operator+=(const vec3 &other);
const vec3 &operator-=(const vec3 &other);
scalar magnitude() const;
scalar magnitudeSquared() const;
vec3 normalize() const;
scalar dot(const vec3 &other) const;
/* order is this x other. */
vec3 cross(const vec3 &other) const;
/* rotate by a rotation quaternion */
vec3 rotateby(const quat &rotquat) const;
/* return an arbitrary unit vector normal to other */
static vec3 any_unit_normal(const vec3 &other);
};
vec3 operator*(scalar scale, const vec3 &v);
std::ostream &operator<<(std::ostream &output, const vec3 &v);
std::istream &operator>>(std::istream &input, vec3 &v);
}
#endif
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