54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library 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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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSG_TIMER
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#define OSG_TIMER 1
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#include <osg/Export>
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namespace osg {
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#if defined(_MSC_VER)
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typedef __int64 Timer_t;
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#else
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typedef unsigned long long Timer_t;
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#endif
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/** Time stamper. */
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class OSG_EXPORT Timer {
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public:
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Timer();
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~Timer() {}
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static const Timer* instance();
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Timer_t tick() const;
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inline double delta_s( Timer_t t1, Timer_t t2 ) const { return (double)(t2 - t1)*_secsPerTick; }
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inline double delta_m( Timer_t t1, Timer_t t2 ) const { return delta_s(t1,t2)*1e3; }
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inline double delta_u( Timer_t t1, Timer_t t2 ) const { return delta_s(t1,t2)*1e6; }
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inline double delta_n( Timer_t t1, Timer_t t2 ) const { return delta_s(t1,t2)*1e9; }
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inline double getSecondsPerTick() const { return _secsPerTick; }
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protected :
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double _secsPerTick;
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};
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}
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#endif
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