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Transformation.cxx

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00001 /* ========================================================================
00002  * Copyright (c) 2006,
00003  * Institute for Computer Graphics and Vision
00004  * Graz University of Technology
00005  * All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are
00009  * met:
00010  *
00011  * Redistributions of source code must retain the above copyright notice,
00012  * this list of conditions and the following disclaimer.
00013  *
00014  * Redistributions in binary form must reproduce the above copyright
00015  * notice, this list of conditions and the following disclaimer in the
00016  * documentation and/or other materials provided with the distribution.
00017  *
00018  * Neither the name of the Graz University of Technology nor the names of
00019  * its contributors may be used to endorse or promote products derived from
00020  * this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
00023  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
00024  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00025  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
00026  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00027  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00028  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033  * ========================================================================
00034  * PROJECT: OpenTracker
00035  * ======================================================================== */
00042 /* ======================================================================= */
00043 
00044 // this will remove the warning 4786
00045 #include "../tool/disable4786.h"
00046 
00047 #include "Transformation.h"
00048 
00049 namespace ot {
00050 
00051     // constructor method.
00052 
00053     Transformation::Transformation()
00054         : Node()
00055         , localEvent()
00056     {
00057     }
00058 
00059     // returns the event number n back in time starting with the newest for n = 0
00060 
00061     Event& Transformation::getEvent(unsigned int number)
00062     {
00063         Node * child = getChild( 0 );
00064         if( child != NULL )
00065         {
00066             if( child->isEventQueue() == 1 )
00067             {    
00068                 return *transformEvent( & child->getEvent( number ));
00069             }
00070         }
00071         return Event::null;
00072     }
00073 
00074     // returns the event closes to the given point in time
00075 
00076     Event& Transformation::getEventNearTime(double time)
00077     {
00078         Node * child = getChild( 0 );
00079         if( child != NULL )
00080         {
00081             if( child->isEventQueue() == 1 )
00082             {    
00083                 return *transformEvent( & child->getEventNearTime( time ));
00084             }
00085         }   
00086         return Event::null;
00087     }
00088 
00089     // returns the size of the queue
00090 
00091     unsigned int Transformation::getSize()
00092     {
00093         Node * child = getChild( 0 );
00094         if( child != NULL )
00095         {
00096             if( child->isEventQueue() == 1 )
00097             {    
00098                 return child->getSize();
00099             }
00100         }
00101         return 0;
00102     }
00103 
00104     // the function evaluation method
00105 
00106     Event& Transformation::getEventAtTime(double time)
00107     {
00108         Node * child = getChild( 0 );
00109         if( child != NULL )
00110         {
00111             if( child->isTimeDependend() == 1 )
00112             {    
00113                 return *transformEvent(& child->getEventAtTime( time ));
00114             }
00115         }
00116         return Event::null;
00117     }
00118 
00119     // tests for EventGenerator interface being present.
00120 
00121     int Transformation::isEventGenerator()
00122     {
00123         Node * child = getChild( 0 );
00124         if( child != NULL )
00125         {
00126             return child->isEventGenerator();
00127         }
00128         return 0;
00129     }
00130 
00131     // tests for EventQueue interface being present.
00132 
00133     int Transformation::isEventQueue()
00134     {
00135         Node * child = getChild( 0 );
00136         if( child != NULL )
00137         {
00138             return child->isEventQueue();
00139         }
00140         return 0;
00141     }
00142 
00143     // tests for TimeDependend interface being present.
00144 
00145     int Transformation::isTimeDependend()
00146     {
00147         Node * child = getChild( 0 );
00148         if( child != NULL )
00149         {
00150             return child->isTimeDependend();
00151         }
00152         return 0;
00153     }
00154 
00155     // this method is called by the EventGenerator to update it's observers.
00156 
00157     void Transformation::onEventGenerated( Event& event, Node& generator)
00158     {
00159         updateObservers( *transformEvent( &event ));
00160     }
00161 
00162 } // namespace ot
00163 
00164 
00165 /* 
00166  * ------------------------------------------------------------
00167  *   End of Transformation.cxx
00168  * ------------------------------------------------------------
00169  *   Automatic Emacs configuration follows.
00170  *   Local Variables:
00171  *   mode:c++
00172  *   c-basic-offset: 4
00173  *   eval: (c-set-offset 'substatement-open 0)
00174  *   eval: (c-set-offset 'case-label '+)
00175  *   eval: (c-set-offset 'statement 'c-lineup-runin-statements)
00176  *   eval: (setq indent-tabs-mode nil)
00177  *   End:
00178  * ------------------------------------------------------------ 
00179  */

copyright (c) 2006 Graz University of Technology