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//
// Filename : AdvancedPredicates1D.h
// Author(s) : Stephane Grabli
// Purpose : Class gathering stroke creation algorithms
// Date of creation : 01/07/2003
//
///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) : Please refer to the COPYRIGHT file distributed
// with this source distribution.
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef ADVANCED_PREDICATES1D_H
# define ADVANCED_PREDICATES1D_H
# include <string>
# include "../view_map/Interface1D.h"
# include "AdvancedFunctions1D.h"
# include "Predicates1D.h"
//
// Predicates definitions
//
///////////////////////////////////////////////////////////
namespace Predicates1D {
// DensityLowerThanUP1D
/*! Returns true if the density evaluated for the
* Interface1D is less than a user-defined density value.
*/
class DensityLowerThanUP1D : public UnaryPredicate1D
{
public:
/*! Builds the functor.
* \param threshold
* The value of the threshold density.
* Any Interface1D having a density lower than
* this threshold will match.
* \param sigma
* The sigma value defining the density evaluation window size
* used in the DensityF0D functor.
*/
DensityLowerThanUP1D(double threshold, double sigma = 2) {
_threshold = threshold;
_sigma = sigma;
}
/*! Returns the string "DensityLowerThanUP1D"*/
string getName() const {
return "DensityLowerThanUP1D";
}
/*! The () operator. */
int operator()(Interface1D& inter) {
Functions1D::DensityF1D fun(_sigma);
if (fun(inter) < 0)
return -1;
result = (fun.result < _threshold);
return 0;
}
private:
double _sigma;
double _threshold;
};
} // end of namespace Predicates1D
#endif // ADVANCED_PREDICATES1D_H
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