Chaste Commit::ca8ccdedf819b6e02855bc0e8e6f50bdecbc5208
RepulsionForce.cpp
1/*
2
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34*/
35
36#include "RepulsionForce.hpp"
37
38template<unsigned DIM>
43
44template<unsigned DIM>
46{
47 // Throw an exception message if not using a NodeBasedCellPopulation
48 if (dynamic_cast<NodeBasedCellPopulation<DIM>*>(&rCellPopulation) == nullptr)
49 {
50 EXCEPTION("RepulsionForce is to be used with a NodeBasedCellPopulation only");
51 }
52
53 std::vector< std::pair<Node<DIM>*, Node<DIM>* > >& r_node_pairs = (static_cast<NodeBasedCellPopulation<DIM>*>(&rCellPopulation))->rGetNodePairs();
54
55 for (typename std::vector< std::pair<Node<DIM>*, Node<DIM>* > >::iterator iter = r_node_pairs.begin();
56 iter != r_node_pairs.end();
57 iter++)
58 {
59 std::pair<Node<DIM>*, Node<DIM>* > pair = *iter;
60
61 Node<DIM>* p_node_a = pair.first;
62 Node<DIM>* p_node_b = pair.second;
63
64 // Get the node locations
65 const c_vector<double, DIM>& r_node_a_location = p_node_a->rGetLocation();
66 const c_vector<double, DIM>& r_node_b_location = p_node_b->rGetLocation();
67
68 // Get the node radii
69 double node_a_radius = p_node_a->GetRadius();
70 double node_b_radius = p_node_b->GetRadius();
71
72 // Get the unit vector parallel to the line joining the two nodes
73 c_vector<double, DIM> unit_difference;
74
75 unit_difference = (static_cast<NodeBasedCellPopulation<DIM>*>(&rCellPopulation))->rGetMesh().GetVectorFromAtoB(r_node_a_location, r_node_b_location);
76
77 // Calculate the value of the rest length
78 double rest_length = node_a_radius+node_b_radius;
79
80 if (norm_2(unit_difference) < rest_length)
81 {
82 // Calculate the force between nodes
83 c_vector<double, DIM> force = this->CalculateForceBetweenNodes(p_node_a->GetIndex(), p_node_b->GetIndex(), rCellPopulation);
84 c_vector<double, DIM> negative_force = -1.0 * force;
85 for (unsigned j=0; j<DIM; j++)
86 {
87 assert(!std::isnan(force[j]));
88 }
89 // Add the force contribution to each node
90 p_node_a->AddAppliedForceContribution(force);
91 p_node_b->AddAppliedForceContribution(negative_force);
92 }
93 }
94}
95
96template<unsigned DIM>
97void RepulsionForce<DIM>::OutputForceParameters(out_stream& rParamsFile)
98{
99 // Call direct parent class
101}
102
103// Explicit instantiation
104template class RepulsionForce<1>;
105template class RepulsionForce<2>;
106template class RepulsionForce<3>;
107
108// Serialization for Boost >= 1.36
#define EXCEPTION(message)
#define EXPORT_TEMPLATE_CLASS_SAME_DIMS(CLASS)
virtual void OutputForceParameters(out_stream &rParamsFile)
Definition Node.hpp:59
const c_vector< double, SPACE_DIM > & rGetLocation() const
Definition Node.cpp:139
unsigned GetIndex() const
Definition Node.cpp:158
void AddAppliedForceContribution(const c_vector< double, SPACE_DIM > &rForceContribution)
Definition Node.cpp:224
double GetRadius()
Definition Node.cpp:248
virtual void OutputForceParameters(out_stream &rParamsFile)
void AddForceContribution(AbstractCellPopulation< DIM > &rCellPopulation)