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50 lines
1.2 KiB
50 lines
1.2 KiB
//
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// Random.hpp
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// AwesomeAttract0r
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//
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// Created by Joshua Moerman on 12/28/11.
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// Copyright (c) 2011 Vadovas. All rights reserved.
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//
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#ifndef AwesomeAttract0r_Random_hpp
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#define AwesomeAttract0r_Random_hpp
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#include <vector>
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// capital because random() was already defined :(
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namespace Random {
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// used as dummy paramter
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struct parameters {};
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/*!
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All uniform distributions are inclusive (ie [min, max]).
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*/
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template <typename T>
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typename std::enable_if<std::is_arithmetic<T>::value && std::is_floating_point<T>::value, T>::type uniform(T min, T max){
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return min + (rand() / (T) RAND_MAX) * (max - min);
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}
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template <typename T>
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typename std::enable_if<std::is_arithmetic<T>::value && std::is_integral<T>::value, T>::type uniform(T min, T max){
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return min + (rand() % (max - min + 1));
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}
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template <typename T>
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std::vector<T> make_vector(T min, T max, size_t number_of_elements){
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std::vector<T> ret;
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for (size_t i = 0; i < number_of_elements; ++i) {
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ret.push_back(uniform(min, max));
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}
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return ret;
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}
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template <typename T>
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std::pair<T, T> in_circle(T radius){
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T r = uniform<T>(0, radius);
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T t = uniform<T>(-M_PI, M_PI);
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return std::make_pair(r * std::cos(t), r * std::sin(t));
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}
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} // namespace random
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#endif
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