Chaste Commit::ca8ccdedf819b6e02855bc0e8e6f50bdecbc5208
PeriodicNodesOnlyMesh.cpp
1/*
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34*/
35
36#include <map>
37#include "PeriodicNodesOnlyMesh.hpp"
38
39template<unsigned SPACE_DIM>
41 : NodesOnlyMesh<SPACE_DIM>(),
42 mWidth(width)
43{
44 // Convert periodic widths into a boolean vector
45 mIsDimPeriodic = zero_vector<bool>(SPACE_DIM);
46
47 for (unsigned i = 0; i < SPACE_DIM; i++)
48 {
49 if (width[i]>0.0)
50 {
51 mIsDimPeriodic[i] = true;
52 }
53 }
54}
55
56template<unsigned SPACE_DIM>
57void PeriodicNodesOnlyMesh<SPACE_DIM>::SetUpBoxCollection(double cutOffLength, c_vector<double, 2*SPACE_DIM> domainSize, int numLocalRows, c_vector<bool,SPACE_DIM> isDimPeriodic)
58{
59
60 // Check that we haven't got too many processors; the maximum number of processors is width/cutOffLength in the y (2D)/z (3D) direction
61 if ( mIsDimPeriodic[SPACE_DIM-1] && ((mWidth[SPACE_DIM-1]+1e-14)/cutOffLength) < PetscTools::GetNumProcs() )
62 {
63 EXCEPTION("Too many processors for the periodic domain width and cut off length. NumProcs should be less than or equal to Y (in 2D) or Z (in 3D) width / Cut off length.\n");
64 }
65 // Container for converting the periodic dims vector to a true/false input into box collection setup
66 // For each periodic dimension:
67
68 for (unsigned i=0; i < SPACE_DIM; i++)
69 {
70 if (mIsDimPeriodic[i])
71 {
72 // Ensure that the width is a multiple of cut-off length
73 if ( fmod(mWidth[i]+1e-14,cutOffLength ) > 2e-14 )
74 {
75 EXCEPTION("The periodic width must be a multiple of cut off length.");
76 }
77 // A width of two boxes gives different simulation results as some connections are considered twice.
78 else if ( mWidth[i]/cutOffLength <= (2.0+1e-14) )
79 {
80 EXCEPTION( "The periodic domain width cannot be less than 2*CutOffLength." );
81 }
82
83 // We force the domain to the periodic widths
84 domainSize[ i*2 ] = 0;
85 domainSize[ i*2+1 ] = mWidth[i];
86 }
87 }
88 NodesOnlyMesh<SPACE_DIM>::SetUpBoxCollection(cutOffLength, domainSize, PETSC_DECIDE, mIsDimPeriodic);
89
90 this->AddNodesToBoxes();
91}
92
93template<unsigned SPACE_DIM>
94c_vector<double, SPACE_DIM> PeriodicNodesOnlyMesh<SPACE_DIM>::GetPeriodicWidths() const
95{
96 return mWidth;
97}
98
99template<unsigned SPACE_DIM>
100double PeriodicNodesOnlyMesh<SPACE_DIM>::GetWidth(const unsigned& rDimension) const
101{
102 double width = 0.0;
103 assert(rDimension < SPACE_DIM);
104
105 if ( !mIsDimPeriodic[rDimension] )
106 {
107 // If we are not a periodic dimension, we just return the width
109 }
110 else
111 {
112 width = mWidth[rDimension];
113 }
114 return width;
115}
116
117template<unsigned SPACE_DIM>
118void PeriodicNodesOnlyMesh<SPACE_DIM>::SetNode(unsigned nodeIndex, ChastePoint<SPACE_DIM> point, bool concreteMove)
119{
120 // concreteMove should always be false for NodesOnlyMesh as no elements to check
121 assert(!concreteMove);
122
123 c_vector<double, SPACE_DIM>& point_coord = point.rGetLocation();
124
125 // Loop over the periodic dimensions and perform a periodic movement if necessary
126 for ( unsigned i = 0; i < SPACE_DIM; i++ )
127 {
128 if ( mIsDimPeriodic[i] )
129 {
130 double local_point_coord = point_coord(i);
131 double local_width = mWidth[i];
132 // We need to make sure that the fudge factor is greater than the one used to calculate the containing
133 // box in distributed box collection. Otherwise the forced domain width causes issues at the right domain edge.
134 double fudge_factor = 1.0e-13;
135 if ( local_point_coord >= local_width )
136 {
137 double new_coord = local_point_coord - local_width;
138
139 point.SetCoordinate(i,new_coord);
140 }
141 else if ( local_point_coord > (local_width-fudge_factor))
142 {
143 // This is to ensure that the position is never equal to mWidth, which would be outside the box domain.
144 // This is due to the fact that mWidth-1e-16=mWidth
145 point.SetCoordinate(i,local_width-fudge_factor);
146 }
147 else if ( local_point_coord < 0.0 )
148 {
149 double new_coord = local_point_coord + local_width;
150
151 // This is to ensure that the position is never equal to mWidth, which would be outside the box domain.
152 // This is due to the fact that mWidth-1e-16=mWidth
153 if ( new_coord > local_width-fudge_factor )
154 {
155 new_coord = local_width-fudge_factor;
156 }
157 point.SetCoordinate(i, new_coord);
158 }
159 }
160 }
161
162 // Update the node's location
163 this->GetNode(nodeIndex)->SetPoint(point);
164}
165
166template<unsigned SPACE_DIM>
168{
169 // Call method on parent class
170 unsigned node_index = NodesOnlyMesh<SPACE_DIM>::AddNode(pNewNode);
171
172 // If necessary move it to be back on the cylinder
173 ChastePoint<SPACE_DIM> new_node_point = pNewNode->GetPoint();
174 SetNode(node_index, new_node_point);
175
176 return node_index;
177
178}
179
180template<unsigned SPACE_DIM>
181c_vector<double, SPACE_DIM> PeriodicNodesOnlyMesh<SPACE_DIM>::GetVectorFromAtoB(const c_vector<double, SPACE_DIM>& rLocation1, const c_vector<double, SPACE_DIM>& rLocation2)
182{
183 c_vector<double, SPACE_DIM> vector = rLocation2 - rLocation1;
184
185 // Loop over the periodic dimensions and measure across boundaries
186 // if points are more than halfway across the width apart
187 for ( unsigned i = 0; i < SPACE_DIM; i++ )
188 {
189 if ( mIsDimPeriodic[i] )
190 {
191 vector(i) = fmod(vector(i),mWidth[i]);
192 if ( vector(i) > 0.5*mWidth[i] )
193 {
194 vector(i) -= mWidth[i];
195 }
196 else if (vector(i) < -0.5*mWidth[i] )
197 {
198 vector(i) += mWidth[i];
199 }
200 }
201 }
202
203 return vector;
204}
205
206// Refresh mesh -> Check and then move if outside box
207template<unsigned SPACE_DIM>
209{
210 // Loop over the periodic dimensions and if they are
211 // outside the domain, get the fmod and relocate
212 for ( typename std::vector<Node<SPACE_DIM> *>::iterator it_node = this->mNodes.begin();
213 it_node != this->mNodes.end(); ++it_node )
214 {
215 c_vector<double,SPACE_DIM> & location = (*it_node)->rGetModifiableLocation();
216
217 for ( unsigned i = 0; i < SPACE_DIM; i++ )
218 {
219 if ( mIsDimPeriodic[i] )
220 {
221 if ( location(i) < 0.0 )
222 {
223 location(i) = fmod( location(i), mWidth[i] ) + mWidth[i];
224 }
225 else if ( location(i) >= mWidth[i] )
226 {
227 location(i) = fmod( location(i), mWidth[i] );
228 }
229 }
230 }
231 }
232
233 // Now run the base class method
235}
236
238// Explicit instantiation
240
241template class PeriodicNodesOnlyMesh<1>;
242template class PeriodicNodesOnlyMesh<2>;
243template class PeriodicNodesOnlyMesh<3>;
244
245// Serialization for Boost >= 1.36
#define EXCEPTION(message)
#define EXPORT_TEMPLATE_CLASS_SAME_DIMS(CLASS)
virtual void RefreshMesh()
virtual double GetWidth(const unsigned &rDimension) const
c_vector< double, DIM > & rGetLocation()
void SetCoordinate(unsigned i, double value)
Definition Node.hpp:59
ChastePoint< SPACE_DIM > GetPoint() const
Definition Node.cpp:133
unsigned AddNode(Node< SPACE_DIM > *pNewNode)
void SetUpBoxCollection(const std::vector< Node< SPACE_DIM > * > &rNodes)
c_vector< bool, SPACE_DIM > mIsDimPeriodic
void SetNode(unsigned nodeIndex, ChastePoint< SPACE_DIM > point, bool concreteMove=false)
unsigned AddNode(Node< SPACE_DIM > *pNewNode)
c_vector< double, SPACE_DIM > GetVectorFromAtoB(const c_vector< double, SPACE_DIM > &rLocation1, const c_vector< double, SPACE_DIM > &rLocation2)
virtual void SetUpBoxCollection(double cutOffLength, c_vector< double, 2 *SPACE_DIM > domainSize, int numLocalRows=PETSC_DECIDE, c_vector< bool, SPACE_DIM > isDimPeriodic=zero_vector< bool >(SPACE_DIM))
PeriodicNodesOnlyMesh(c_vector< double, SPACE_DIM > width)
c_vector< double, SPACE_DIM > GetPeriodicWidths() const
double GetWidth(const unsigned &rDimension) const
static unsigned GetNumProcs()