ESPResSo
Extensible Simulation Package for Research on Soft Matter Systems
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Scaled.hpp
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19#ifndef CORE_CONSTRAINTS_DETAIL_SCALED_HPP
20#define CORE_CONSTRAINTS_DETAIL_SCALED_HPP
21
22#include <unordered_map>
23
24namespace FieldCoupling {
25namespace Coupling {
26class Scaled {
27 std::unordered_map<int, double> m_scales;
28 double m_default;
29
30public:
31 static constexpr bool is_linear = true;
32
33 template <typename ScalesRef>
34 Scaled(ScalesRef &&scales, double default_val)
35 : m_scales(std::forward<ScalesRef>(scales)), m_default(default_val) {}
36
37 double &default_scale() { return m_default; }
38 double const &default_scale() const { return m_default; }
39 std::unordered_map<int, double> &particle_scales() { return m_scales; }
40 std::unordered_map<int, double> const &particle_scales() const {
41 return m_scales;
42 }
43
44private:
45 template <typename Particle> double scale(Particle const &p) const {
46 auto const &val = m_scales.find(p.id());
47 if (val != m_scales.end())
48 return val->second;
49
50 return m_default;
51 }
52
53public:
54 template <typename T, typename Particle>
55 T operator()(const Particle &p, const T &x) const {
56 return scale(p) * x;
57 }
58};
59} // namespace Coupling
60} // namespace FieldCoupling
61
62#endif
Scaled(ScalesRef &&scales, double default_val)
Definition Scaled.hpp:34
T operator()(const Particle &p, const T &x) const
Definition Scaled.hpp:55
static constexpr bool is_linear
Definition Scaled.hpp:31
double const & default_scale() const
Definition Scaled.hpp:38
std::unordered_map< int, double > & particle_scales()
Definition Scaled.hpp:39
std::unordered_map< int, double > const & particle_scales() const
Definition Scaled.hpp:40
Struct holding all information for one particle.
Definition Particle.hpp:395
auto const & id() const
Definition Particle.hpp:414