New Random class for convenient random number generation.

1 files changed, 58 insertions, 0 deletions

diff --git a/src/random.cc b/src/random.cc
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index 0000000..1df9a62
--- /dev/null
+++ b/src/random.cc
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            random.cc
+ *
+ *  Wed Mar 23 19:17:24 CET 2016
+ *  Copyright 2016 André Nusser
+ *  andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "random.h"
+
+#include <chrono>
+
+Random::Random()
+	: Random(std::chrono::system_clock::now().time_since_epoch().count())
+{
+
+}
+
+Random::Random(unsigned int seed)
+{
+	generator.seed(seed);
+}
+
+int Random::intInRange(int lower_bound, int upper_bound)
+{
+	std::uniform_int_distribution<int> distribution(lower_bound, upper_bound);
+	return distribution(generator);
+}
+
+float Random::floatInRange(float lower_bound, float upper_bound)
+{
+	std::uniform_real_distribution<float> distribution(lower_bound, upper_bound);
+	return distribution(generator);
+}
+
+float Random::normalDistribution(float mean, float stddev)
+{
+	std::normal_distribution<float> distribution(mean, stddev);
+	return distribution(generator);
+}