89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 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_FRAMESTAMP
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#define OSG_FRAMESTAMP 1
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#include <osg/Referenced>
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#if defined(__sgi) || (defined(WIN32) && !defined(__MWERKS__))
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#include <time.h>
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#else
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#include <ctime>
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using std::tm;
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#endif
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namespace osg
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{
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/** Class which encapsulates the frame number, reference time and calander
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* time of specific frame, used to synchonize operations on the scene graph
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* and other machines when using a graphics cluster. Note the calander
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* time can be an artificial simulation time or capture the real time
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* of day etc.*/
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class SG_EXPORT FrameStamp : public Referenced
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{
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public:
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FrameStamp();
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FrameStamp(const FrameStamp& fs);
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FrameStamp& operator = (const FrameStamp& fs);
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void setFrameNumber(int fnum) { _frameNumber = fnum; }
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int getFrameNumber() const { return _frameNumber; }
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void setReferenceTime(double refTime) { _referenceTime = refTime; }
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double getReferenceTime() const { return _referenceTime; }
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void setCalendarTime(const tm& calendarTime);
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void getCalendarTime(tm& calendarTime) const;
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// keep public to allow it to be permit allocation which is
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// not on the heap used osgcluster
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virtual ~FrameStamp();
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protected:
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// note no dynamic memory is used so that data can be passed
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// via a simple memory copy or within a data packet across
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// the network.
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int _frameNumber;
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double _referenceTime;
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// member varaibles of time.h's tm structure, copied here to
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// ensure that all data is no dynamic. The tm structure itself
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// is not completely consistent betweem implementations, which
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// could be a problem when sending the FrameStamp across a network
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// with differnt versions of tm (i.e mixing Unix and Windows.)
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int tm_sec; /* Seconds. [0-60] (1 leap second) */
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int tm_min; /* Minutes. [0-59] */
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int tm_hour; /* Hours. [0-23] */
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int tm_mday; /* Day. [1-31] */
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int tm_mon; /* Month. [0-11] */
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int tm_year; /* Year - 1900. */
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int tm_wday; /* Day of week. [0-6] */
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int tm_yday; /* Days in year. [0-365] */
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int tm_isdst; /* DST. [-1/0/1]*/
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};
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}
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#endif
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