Jacques Lucke
cb5bfb32ba
Reviewers: sergey Differential Revision: https://developer.blender.org/D8150
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2013 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup depsgraph
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*/
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#pragma once
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namespace blender {
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namespace deg {
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// Utility class which takes care of calculating average of time series, such as
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// FPS counters.
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template<int MaxSamples> class AveragedTimeSampler {
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public:
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AveragedTimeSampler() : num_samples_(0), next_sample_index_(0)
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{
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}
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void add_sample(double value)
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{
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samples_[next_sample_index_] = value;
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// Move to the next index, keeping wrapping at the end of array into account.
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++next_sample_index_;
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if (next_sample_index_ == MaxSamples) {
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next_sample_index_ = 0;
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}
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// Update number of stored samples.
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if (num_samples_ != MaxSamples) {
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++num_samples_;
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}
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}
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double get_averaged() const
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{
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double sum = 0.0;
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for (int i = 0; i < num_samples_; ++i) {
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sum += samples_[i];
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}
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return sum / num_samples_;
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}
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protected:
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double samples_[MaxSamples];
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// Number of samples which are actually stored in the array.
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int num_samples_;
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// Index in the samples_ array under which next sample will be stored.
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int next_sample_index_;
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};
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} // namespace deg
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} // namespace blender
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