ControlIntervalMapper.cxx

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/*
 * Copyright (c) 2009 Fundacio Barcelona Media Universitat Pompeu Fabra.
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include "ControlIntervalMapper.hxx"
#include "ProcessingFactory.hxx"

namespace CLAM
{
namespace Hidden
{
        static const char * metadata[] = {
                "key", "ControlIntervalMapper",
                "category", "Controls",
                "description", "Receives a control and maps it using two intervals, the interval of the incoming value and the interval of the new value",
                0
        };
        static FactoryRegistrator<ProcessingFactory, ControlIntervalMapper> reg = metadata;
}

void ControlIntervalMapperConfig::DefaultInit()
{
        AddAll();
        UpdateData();
        SetInputMin( 0.0 );
        SetInputMax( 1.0 );
        SetOutputMin( 0.0 );
        SetOutputMax( 1.0 );
}

ControlIntervalMapper::ControlIntervalMapper()
        : _inControl( "input_control", this , &ControlIntervalMapper::InControlCallback )
        , _outControl( "mapped_control", this )
        , _min(0.)
        , _max(1.)
        , _newmin(0.)
        , _newmax(1.)
{
        Configure( _config );   
}

ControlIntervalMapper::ControlIntervalMapper( const ControlIntervalMapperConfig& cfg ) 
        : _inControl( "input_control", this , &ControlIntervalMapper::InControlCallback )
        , _outControl( "mapped_control", this )
        , _min(0.)
        , _max(1.)
        , _newmin(0.)
        , _newmax(1.)
{ 
        Configure( cfg );
}

bool ControlIntervalMapper::ConcreteConfigure( const ProcessingConfig& cfg )
{
        CopyAsConcreteConfig( _config, cfg );
        _min = _config.GetInputMin();
        _max = _config.GetInputMax();
        _newmin = _config.GetOutputMin();
        _newmax = _config.GetOutputMax();
        _inControl.SetBounds(_min,_max);
        return true;            
}

void ControlIntervalMapper::InControlCallback(const TControlData & value)
{
        TControlData newval = (( value - _min) / (_max - _min)) * 
                ( _newmax - _newmin) + _newmin;
        _outControl.SendControl( newval );
}

bool ControlIntervalMapper::Do()
{
        return true;
}
}