00001 //------------------------------------------------------------------------------ 00002 // Lamp : Open source game middleware 00003 // Copyright (C) 2004 Junpei Ohtani ( Email : junpee@users.sourceforge.jp ) 00004 // 00005 // This library is free software; you can redistribute it and/or 00006 // modify it under the terms of the GNU Lesser General Public 00007 // License as published by the Free Software Foundation; either 00008 // version 2.1 of the License, or (at your option) any later version. 00009 // 00010 // This library is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 // Lesser General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public 00016 // License along with this library; if not, write to the Free Software 00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 //------------------------------------------------------------------------------ 00019 00020 /** @file 00021 * FPS計測実装 00022 * @author Junpee 00023 */ 00024 00025 #include "LampBasic.h" 00026 #include "Core/Utility/FPSMeasurement.h" 00027 00028 namespace Lamp{ 00029 00030 //------------------------------------------------------------------------------ 00031 // コンストラクタ 00032 FPSMeasurement::FPSMeasurement(){ 00033 reset(); 00034 } 00035 //------------------------------------------------------------------------------ 00036 // デストラクタ 00037 FPSMeasurement::~FPSMeasurement(){ 00038 } 00039 //------------------------------------------------------------------------------ 00040 // リセット 00041 void FPSMeasurement::reset(){ 00042 fps_ = 0.f; 00043 lastTime_ = Timer::getTick(); 00044 frameCount_ = 0; 00045 } 00046 //------------------------------------------------------------------------------ 00047 // 計測 00048 float FPSMeasurement::measurement(){ 00049 Timer::Tick nowTime = Timer::getTick(); 00050 float time = Timer::getInterval(lastTime_, nowTime); 00051 frameCount_++; 00052 // 一秒平均を取る 00053 if(time > 1000.f){ 00054 fps_ = frameCount_ * 1000.f / time; 00055 lastTime_ = nowTime; 00056 frameCount_ = 0; 00057 } 00058 return fps_; 00059 } 00060 //------------------------------------------------------------------------------ 00061 } // End of namespace Lamp 00062 //------------------------------------------------------------------------------