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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): Siargey Kachanovich
*
* Copyright (C) 2019 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#ifndef FUNCTIONS_FUNCTION_H_
#define FUNCTIONS_FUNCTION_H_
#include <Eigen/Dense>
namespace Gudhi {
namespace coxeter_triangulation {
/**
* \class Function
* \brief The parent class for all functions implemented in the module.
* Contains virtual methods needed to be a model of the concept FunctionForImplicitManifold.
*
* \ingroup coxeter_triangulation
*/
struct Function {
/** \brief Virtual method for the value of the function at a specified point.
* @param[in] p The input point.
*/
virtual Eigen::VectorXd evaluate(const Eigen::VectorXd& p) const {return Eigen::VectorXd(0);}
/** \brief Virtual method for the domain dimension. */
virtual std::size_t amb_d() const {return 0;};
/** \brief Virtual method for the codomain dimension. */
virtual std::size_t cod_d() const {return 0;};
/** \brief Virtual method for the seed point. */
virtual Eigen::VectorXd seed() const {return Eigen::VectorXd(0);}
/** \brief Virtual destructor. */
virtual ~Function() {}
};
} // namespace coxeter_triangulation
} // namespace Gudhi
#endif
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