ControlIntervalMapper.cxx

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00001 /*
00002  * Copyright (c) 2009 Fundacio Barcelona Media Universitat Pompeu Fabra.
00003  *
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License as published by
00007  * the Free Software Foundation; either version 2 of the License, or
00008  * (at your option) any later version.
00009  *
00010  * This program 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
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00018  *
00019  */
00020 #include "ControlIntervalMapper.hxx"
00021 #include "ProcessingFactory.hxx"
00022 
00023 namespace CLAM
00024 {
00025 namespace Hidden
00026 {
00027         static const char * metadata[] = {
00028                 "key", "ControlIntervalMapper",
00029                 "category", "Controls",
00030                 "description", "Receives a control and maps it using two intervals, the interval of the incoming value and the interval of the new value",
00031                 0
00032         };
00033         static FactoryRegistrator<ProcessingFactory, ControlIntervalMapper> reg = metadata;
00034 }
00035 
00036 void ControlIntervalMapperConfig::DefaultInit()
00037 {
00038         AddAll();
00039         UpdateData();
00040         SetInputMin( 0.0 );
00041         SetInputMax( 1.0 );
00042         SetOutputMin( 0.0 );
00043         SetOutputMax( 1.0 );
00044 }
00045 
00046 ControlIntervalMapper::ControlIntervalMapper()
00047         : _inControl( "input_control", this , &ControlIntervalMapper::InControlCallback )
00048         , _outControl( "mapped_control", this )
00049         , _min(0.)
00050         , _max(1.)
00051         , _newmin(0.)
00052         , _newmax(1.)
00053 {
00054         Configure( _config );   
00055 }
00056 
00057 ControlIntervalMapper::ControlIntervalMapper( const ControlIntervalMapperConfig& cfg ) 
00058         : _inControl( "input_control", this , &ControlIntervalMapper::InControlCallback )
00059         , _outControl( "mapped_control", this )
00060         , _min(0.)
00061         , _max(1.)
00062         , _newmin(0.)
00063         , _newmax(1.)
00064 { 
00065         Configure( cfg );
00066 }
00067 
00068 bool ControlIntervalMapper::ConcreteConfigure( const ProcessingConfig& cfg )
00069 {
00070         CopyAsConcreteConfig( _config, cfg );
00071         _min = _config.GetInputMin();
00072         _max = _config.GetInputMax();
00073         _newmin = _config.GetOutputMin();
00074         _newmax = _config.GetOutputMax();
00075         _inControl.SetBounds(_min,_max);
00076         return true;            
00077 }
00078 
00079 void ControlIntervalMapper::InControlCallback(const TControlData & value)
00080 {
00081         TControlData newval = (( value - _min) / (_max - _min)) * 
00082                 ( _newmax - _newmin) + _newmin;
00083         _outControl.SendControl( newval );
00084 }
00085 
00086 bool ControlIntervalMapper::Do()
00087 {
00088         return true;
00089 }
00090 }
00091 
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