RBCXAngle.h

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#pragma once
 
#include <cmath>
 
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
 
namespace rb {
 
class Angle {
public:
    typedef float _T;
    static const Angle Pi;
 
    Angle()
        : _rads(0) {}
 
    static Angle rad(_T r) { return Angle(r); }
    static Angle deg(_T d) { return Angle(d * _T(M_PI / 180)); }
    static Angle nan() { return Angle(nanf("")); }
 
    bool isNaN() const { return std::isnan(_rads); }
 
    Angle& operator+=(Angle a) {
        _rads += a._rads;
        return *this;
    }
    Angle& operator-=(Angle a) {
        _rads -= a._rads;
        return *this;
    }
    Angle operator-() const { return Angle(-_rads); }
    Angle& operator*=(_T c) {
        _rads *= c;
        return *this;
    }
    Angle& operator/=(_T c) {
        _rads /= c;
        return *this;
    }
 
    _T deg() const { return _rads * _T(180.0 / M_PI); }
    _T rad() const { return _rads; }
 
private:
    _T _rads;
    Angle(_T r)
        : _rads(r) {}
};
 
Angle operator+(Angle a, Angle b);
Angle operator-(Angle a, Angle b);
Angle operator*(Angle a, Angle::_T c);
Angle operator/(Angle a, Angle::_T c);
Angle operator"" _deg(long double d);
Angle operator"" _rad(long double r);
Angle operator"" _deg(unsigned long long int d);
Angle operator"" _rad(unsigned long long int r);
 
}; // namespace rb