/usr/include/dune/grid/uggrid/uggridleafiterator.hh is in libdune-grid-dev 2.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | #ifndef DUNE_UGGRIDLEAFITERATOR_HH
#define DUNE_UGGRIDLEAFITERATOR_HH
#include <dune/grid/uggrid/uggridentitypointer.hh>
/** \file
* \brief The UGGridLeafIterator class
*/
namespace Dune {
/** \brief Iterator over all entities of a given codimension and level of a grid.
* \ingroup UGGrid
*/
template<int codim, PartitionIteratorType pitype, class GridImp>
class UGGridLeafIterator :
public Dune::UGGridEntityPointer <codim,GridImp>
{
enum {dim = GridImp::dimension};
// The type of the UG entity we're pointing to
typedef typename UG_NS<dim>::template Entity<codim>::T UGEntity;
public:
UGGridLeafIterator(const GridImp& grid) : grid_(&grid) {
// Entities below this level are certainly not leaf entities
const unsigned int startingLevel = grid.leafIndexSet_.coarsestLevelWithLeafElements_;
if (codim==dim) {
if (pitype==All_Partition || pitype==Ghost_Partition)
this->setToTarget((UGEntity*)UG_NS<dim>::PFirstNode(grid_->multigrid_->grids[startingLevel]), grid_);
else if (pitype == Dune::Interior_Partition || pitype == Dune::InteriorBorder_Partition)
this->setToTarget((UGEntity*)UG_NS<dim>::FirstNode(grid_->multigrid_->grids[startingLevel]), grid_);
else // overlap and overlap-front
this->setToTarget(nullptr,nullptr);
} else if (codim==0) {
if (pitype==All_Partition || pitype==Ghost_Partition)
this->setToTarget((UGEntity*)UG_NS<dim>::PFirstElement(grid_->multigrid_->grids[startingLevel]), grid_);
else if (pitype == Dune::Interior_Partition || pitype == Dune::InteriorBorder_Partition)
this->setToTarget((UGEntity*)UG_NS<dim>::FirstElement(grid_->multigrid_->grids[startingLevel]), grid_);
else // overlap and overlap-front
this->setToTarget(nullptr,nullptr);
} else
DUNE_THROW(NotImplemented, "UGGrid leaf iterators for codimension " << codim);
if (this->virtualEntity_.getTarget() && ! (isLeaf() && isInPartition()))
increment();
}
//! Constructor
UGGridLeafIterator()
{
this->virtualEntity_.setToTarget(nullptr,nullptr);
}
//! prefix increment
void increment() {
// Increment until you find a leaf entity
do {
globalIncrement();
}
while (this->virtualEntity_.getTarget() && ! (isLeaf() && isInPartition()));
}
private:
/**
* \brief Return true iff the current entity is a leaf (element version)
*/
bool isLeaf(const typename UG_NS<dim>::Element* theElement)
{
return UG_NS<dim>::isLeaf(theElement);
}
/**
* \brief Return true iff the current entity is a leaf (node version)
*/
bool isLeaf(const typename UG_NS<dim>::Node* theNode)
{
// in the case of nodes: only visit the uppermost entity if more than one is leaf
if (theNode->son != NULL)
return false;
return UG_NS<dim>::isLeaf(theNode);
}
/**
* \brief Return true iff the current entity has the right PartitionType.
*/
bool isInPartition()
{
Dune::PartitionType entityPIType = this->virtualEntity_.partitionType();
if (pitype == All_Partition)
return true;
if (pitype == Ghost_Partition && entityPIType == GhostEntity)
return true;
else if (pitype == Interior_Partition && entityPIType == InteriorEntity)
return true;
else if (pitype == InteriorBorder_Partition &&
(entityPIType == BorderEntity ||
entityPIType == InteriorEntity))
return true;
return false;
}
/**
* \brief Return true iff the current entity is a leaf entity
*/
bool isLeaf()
{
return isLeaf(this->virtualEntity_.getTarget());
}
/** \brief This increment makes the iterator wander over all entities on all levels */
void globalIncrement() {
// Store the current level, so we know it even when pointing to an invalid entity
int level = this->level();
// Increment on this level
this->virtualEntity_.setToTarget(UG_NS<dim>::succ(this->virtualEntity_.getTarget()), grid_);
// If beyond the end of this level set to first of next level
if (!this->virtualEntity_.getTarget() && level < grid_->maxLevel()) {
if (codim==dim) {
if (pitype==All_Partition || pitype==Ghost_Partition)
this->setToTarget((UGEntity*)UG_NS<dim>::PFirstNode(grid_->multigrid_->grids[level+1]), grid_);
else
this->setToTarget((UGEntity*)UG_NS<dim>::FirstNode(grid_->multigrid_->grids[level+1]), grid_);
} else if (codim==0) {
if (pitype==All_Partition || pitype==Ghost_Partition)
this->setToTarget((UGEntity*)UG_NS<dim>::PFirstElement(grid_->multigrid_->grids[level+1]), grid_);
else
this->setToTarget((UGEntity*)UG_NS<dim>::FirstElement(grid_->multigrid_->grids[level+1]), grid_);
} else
DUNE_THROW(NotImplemented, "UGGrid leaf iterators for codimension " << codim);
}
}
// /////////////////////////////////////
// Data members
// /////////////////////////////////////
const GridImp* grid_;
};
} // namespace Dune
#endif
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