You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
3.5 KiB
109 lines
3.5 KiB
/*==LICENSE==* |
|
|
|
CyanWorlds.com Engine - MMOG client, server and tools |
|
Copyright (C) 2011 Cyan Worlds, Inc. |
|
|
|
This program is free software: you can redistribute it and/or modify |
|
it under the terms of the GNU General Public License as published by |
|
the Free Software Foundation, either version 3 of the License, or |
|
(at your option) any later version. |
|
|
|
This program 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 General Public License for more details. |
|
|
|
You should have received a copy of the GNU General Public License |
|
along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
|
|
Additional permissions under GNU GPL version 3 section 7 |
|
|
|
If you modify this Program, or any covered work, by linking or |
|
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
|
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
|
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
|
(or a modified version of those libraries), |
|
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
|
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
|
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
|
licensors of this Program grant you additional |
|
permission to convey the resulting work. Corresponding Source for a |
|
non-source form of such a combination shall include the source code for |
|
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
|
work. |
|
|
|
You can contact Cyan Worlds, Inc. by email legal@cyan.com |
|
or by snail mail at: |
|
Cyan Worlds, Inc. |
|
14617 N Newport Hwy |
|
Mead, WA 99021 |
|
|
|
*==LICENSE==*/ |
|
#ifndef PL_AVG_H |
|
#define PL_AVG_H |
|
|
|
#include "hsConfig.h" |
|
#include "hsThread.h" |
|
#include "hsStlUtils.h" |
|
|
|
|
|
// A Time based Value Averaging class |
|
// implemented in a ring buffer |
|
// Values are averaged over the RingLen |
|
// independant of frame time |
|
// The ring buffer will grow to accomadate |
|
// as many samples as added during the Len |
|
// Only Accurate to kPercision (0.001) of whatever units |
|
// of time are used |
|
|
|
template <class T> class TimeBasedAvgRing |
|
{ |
|
/* T must be a simple type |
|
|
|
If T is not a floating point type then rounding |
|
loss may occur when samples are interpolated |
|
at window boundries |
|
*/ |
|
private: |
|
static const float kPercision; |
|
|
|
template <class S> class Item |
|
{ |
|
private: |
|
T fValue; |
|
double fTime; |
|
public: |
|
Item() { Reset(); } |
|
Item(const T val, const double time) : fValue(val), fTime(time) { } |
|
void Reset() { fValue = 0; fTime = 0; } |
|
void SetValue(const T val) { fValue = val; } |
|
void SetTime(const double time) { fTime = time; } |
|
T GetValue() const { return fValue; } |
|
double GetTime() const { return fTime; } |
|
}; |
|
typedef std::list< Item<T> > TimeList; |
|
typedef typename TimeList::iterator TimeListIterator; // .NET added typename to be C++ ISO compliant - JL |
|
|
|
TimeList fList; |
|
float fLen; // in time |
|
float fAvg; |
|
float fMaxAvg; |
|
double fTotal; |
|
TimeListIterator fRingStart, fRingEnd; |
|
hsMutex fLock; |
|
public: |
|
TimeBasedAvgRing():fLen(0.f),fAvg(0.f),fMaxAvg(0.f),fTotal(0.0) {} |
|
|
|
void SetRingLen(const float len) { fLen = len; } |
|
float GetRingLen() const { return fLen; } |
|
void AddItem(T value, double time); |
|
float GetAvg() const { return fAvg; } |
|
double GetTotal() const { return fTotal; } |
|
float GetMaxAvg() const { return fMaxAvg; } |
|
void ResetMaxAvg() { fMaxAvg=fAvg; } |
|
void Reset() { fRingStart=fRingEnd; ResetMaxAvg(); } |
|
}; |
|
|
|
|
|
#endif // PL_AVG_H |
|
|
|
|