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contact_common.hh
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/**
* @file contact_common.hh
*
* @author Alejandro M. Aragón <alejandro.aragon@epfl.ch>
*
* @date creation: Fri Jan 04 2013
* @date last modification: Wed Sep 17 2014
*
* @brief Forward declarations for contact classes
*
* @section LICENSE
*
* Copyright (©) 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_CONTACT_COMMON_HH__
#define __AKANTU_CONTACT_COMMON_HH__
#include <map>
#include "aka_visitor.hh"
#include <array/expr.hpp>
#include "cppargparse.hh"
//#define DEBUG_CONTACT 1
__BEGIN_AKANTU__
using std::cout;
using std::endl;
typedef array::Array<1, Real> vector_type;
typedef array::Array<2, Real> matrix_type;
using array::transpose;
//! Enumerated type used for the Contact overloaded operator[] that returns real
// values
enum Contact_parameter_type {
Epsilon,
Alpha,
Multiplier_tol,
Newton_tol,
Multiplier_max_steps,
Newton_max_steps
};
//! Enumerated type used for the Contact overloaded operator[] that returns
// boolean values
enum Contact_flag_type {
Verbose,
Automatic_penalty_parameter
};
//! Discretization types
enum Discretization_type {
Node_to_node,
Node_to_segment,
Segment_to_segment
};
//! Contact type
enum Contact_type {
Self_contact,
No_self_contact
};
struct EmptyType {};
class NullType {};
//! This functor is called when the visitor is not implemented for a particular
// object.
template <class R> struct Discretization_visitor_default {
template <class T> R operator()(T &t) {
cout << "*** WARNING *** No implementation for discretization visitor"
<< endl;
}
};
template <Discretization_type d> class Contact_discretization;
typedef Contact_discretization<Node_to_node> N2N_c;
typedef Contact_discretization<Node_to_segment> N2S_c;
typedef Contact_discretization<Segment_to_segment> S2S_c;
template <AnalysisMethod s, ContactResolutionMethod r,
ContactImplementationMethod i = _none>
struct SelectResolution {
constexpr static const AnalysisMethod analysis = s;
constexpr static const ContactResolutionMethod method = r;
constexpr static const ContactImplementationMethod implementation = i;
};
template <int Dim, AnalysisMethod s, ContactResolutionMethod r>
class ContactResolution;
template <int Dim, template <int> class Search_policy, class Resolution_policy>
class Contact;
// parsers
extern cppargparse::ArgumentParser contact_argparser;
extern Parser contact_parser;
class ContactParameters {
protected:
typedef std::map<Contact_parameter_type, Real> options_map;
typedef std::map<Contact_flag_type, bool> flag_map;
options_map options_;
flag_map flags_;
public:
//! Overloaded operator[] (const) that returns real values
Real operator[](Contact_parameter_type p) const {
auto it = options_.find(p);
assert(it != options_.end());
return it->second;
}
//! Overloaded operator[] (non-const) that returns real values
Real &operator[](Contact_parameter_type p) { return options_[p]; }
//! Overloaded operator[] (const) that returns flags
bool operator[](Contact_flag_type f) const {
auto it = flags_.find(f);
return it->second;
}
//! Overloaded operator[] (non-const) that returns bool values
bool &operator[](Contact_flag_type p) { return flags_[p]; }
virtual void initialize() {}
};
template <typename T> T Heaviside(T v) { return v < 0 ? 0 : 1; }
template <typename T> T Macauley(T v) { return v < 0 ? 0 : v; }
template <typename value_type = Real> array::Array<2, value_type> eye(UInt d) {
array::Array<2, value_type> I(d);
for (UInt i = 0; i < d; ++i)
I(i, i) = 1.;
return I;
}
__END_AKANTU__
#endif /* __AKANTU_CONTACT_COMMON_HH__ */

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