// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0.If a copy of the MPL was not distributed with this
// file, You can obtain one at https ://mozilla.org/MPL/2.0/.

#ifndef ANGLE_H
#define ANGLE_H

namespace Passer {
namespace LinearAlgebra {

template <typename T> class AngleOf {
public:
  AngleOf(){};
  AngleOf(T v) : value(v) {}
  operator T() const { return value; }

  static AngleOf<T> Rad2Deg;
  static AngleOf<T> Deg2Rad;

  static AngleOf<T> pi;

  bool operator==(AngleOf<T> a);

  static AngleOf<T> Normalize(AngleOf<T> a);
  static AngleOf<T> Clamp(AngleOf<T> a, AngleOf<T> min, AngleOf<T> max);
  static AngleOf<T> Difference(AngleOf<T> a, AngleOf<T> b) {
    AngleOf<T> r = Normalize(b - a);
    return r;
  };
  static AngleOf<T> MoveTowards(AngleOf<T> fromAngle, AngleOf<T> toAngle,
                                AngleOf<T> maxAngle);

  static AngleOf<T> CosineRuleSide(float a, float b, AngleOf<T> gamma);
  static AngleOf<T> CosineRuleAngle(float a, float b, float c);

  static AngleOf<T> SineRuleAngle(float a, AngleOf<T> beta, float c);

private:
  T value;
};

using Angle = AngleOf<float>;

} // namespace LinearAlgebra
} // namespace Passer
using namespace Passer::LinearAlgebra;

#endif