//
//  Random.hpp
//  AwesomeAttract0r
//
//  Created by Joshua Moerman on 12/28/11.
//  Copyright (c) 2011 Vadovas. All rights reserved.
//

#ifndef AwesomeAttract0r_Random_hpp
#define AwesomeAttract0r_Random_hpp

#include <vector>

// capital because random() was already defined :(
namespace Random {
	// used as dummy paramter
	struct parameters {};
	
	/*!
	 All uniform distributions are inclusive (ie [min, max]).
	 */
	template <typename T>
	typename std::enable_if<std::is_arithmetic<T>::value && std::is_floating_point<T>::value, T>::type uniform(T min, T max){
		return min + (rand() / (T) RAND_MAX) * (max - min);
	}
	
	template <typename T>
	typename std::enable_if<std::is_arithmetic<T>::value && std::is_integral<T>::value, T>::type uniform(T min, T max){
		return min + (rand() % (max - min + 1));
	}

	template <typename T>
	std::vector<T> make_vector(T min, T max, size_t number_of_elements){
		std::vector<T> ret;
		for (size_t i = 0; i < number_of_elements; ++i) {
			ret.push_back(uniform(min, max));
		}
		return ret;
	}
	
	template <typename T>
	std::pair<T, T> in_circle(T radius){
		T r = uniform<T>(0, radius);
		T t = uniform<T>(-M_PI, M_PI);
		return std::make_pair(r * std::cos(t), r * std::sin(t));
	}
	
}	// namespace random

#endif