/usr/include/gmsh/OptHomObjContribMetricMin.h is in libgmsh-dev 2.10.1+dfsg1-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#ifndef _OPTHOMOBJCONTRIBMETRICMIN_H_
#define _OPTHOMOBJCONTRIBMETRICMIN_H_
#include "MeshOptPatch.h"
#include "MeshOptObjContrib.h"
template<class FuncType>
class ObjContribMetricMin : public ObjContrib, public FuncType
{
public:
ObjContribMetricMin(double weight);
virtual ~ObjContribMetricMin() {}
virtual ObjContrib *copy() const;
virtual void initialize(Patch *mesh);
virtual bool fail() { return false; }
virtual bool addContrib(double &Obj, alglib::real_1d_array &gradObj);
virtual void updateParameters() { FuncType::updateParameters(_min, _max); }
virtual bool targetReached() { return FuncType::targetReached(_min, _max); }
virtual bool stagnated() { return FuncType::stagnated(_min, _max); }
virtual void updateMinMax();
protected:
Patch *_mesh;
double _weight;
};
template<class FuncType>
ObjContribMetricMin<FuncType>::ObjContribMetricMin(double weight) :
ObjContrib("MetricMin", FuncType::getNamePrefix()+"MetricMin"),
_mesh(0), _weight(weight)
{
}
template<class FuncType>
ObjContrib *ObjContribMetricMin<FuncType>::copy() const
{
return new ObjContribMetricMin<FuncType>(*this);
}
template<class FuncType>
void ObjContribMetricMin<FuncType>::initialize(Patch *mesh)
{
_mesh = mesh;
_mesh->initScaledJac();
updateMinMax();
FuncType::initialize(_min, _max);
}
template<class FuncType>
bool ObjContribMetricMin<FuncType>::addContrib(double &Obj, alglib::real_1d_array &gradObj)
{
_min = BIGVAL;
_max = -BIGVAL;
for (int iEl = 0; iEl < _mesh->nEl(); iEl++) {
std::vector<double> mM(_mesh->nBezEl(iEl)); // Min. of Metric
std::vector<double> gMM(_mesh->nBezEl(iEl)*_mesh->nPCEl(iEl)); // Dummy gradients of metric min.
_mesh->metricMinAndGradients(iEl, mM, gMM);
for (int l = 0; l < _mesh->nBezEl(iEl); l++) { // Add contribution for each Bezier coeff.
Obj += _weight * FuncType::compute(mM[l]);
const double dfact = _weight * FuncType::computeDiff(mM[l]);
for (int iPC = 0; iPC < _mesh->nPCEl(iEl); iPC++)
gradObj[_mesh->indPCEl(iEl,iPC)] += dfact * gMM[_mesh->indGSJ(iEl, l, iPC)];
_min = std::min(_min, mM[l]);
_max = std::max(_max, mM[l]);
}
}
return true;
}
template<class FuncType>
void ObjContribMetricMin<FuncType>::updateMinMax()
{
_min = BIGVAL;
_max = -BIGVAL;
for (int iEl = 0; iEl < _mesh->nEl(); iEl++) {
std::vector<double> mM(_mesh->nBezEl(iEl)); // Min. of Metric
std::vector<double> dumGMM(_mesh->nBezEl(iEl)*_mesh->nPCEl(iEl)); // Dummy gradients of metric min.
_mesh->metricMinAndGradients(iEl, mM, dumGMM);
for (int l = 0; l < _mesh->nBezEl(iEl); l++) { // Check each Bezier coeff.
_min = std::min(_min, mM[l]);
_max = std::max(_max, mM[l]);
}
}
}
#endif /* _OPTHOMOBJCONTRIBMETRICMIN_H_ */
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