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Commit eee6f908 authored by Thomas Toulorge's avatar Thomas Toulorge
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Fixed computeMetricIsoLinInterp and cleaned details in meshMetric

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Mesh/meshMetric.cpp
+ 31
− 120
View file @ eee6f908
......@@ -166,10 +166,7 @@ void meshMetric::exportInfo(const char * fileendname)
for ( int i = 0; i < e->getNumVertices(); i++) {
MVertex *ver = e->getVertex(i);
out_ls << vals[ver];
SVector3 gradudx = dgrads[0][ver];
SVector3 gradudy = dgrads[1][ver];
SVector3 gradudz = dgrads[2][ver];
out_hess << (gradudx(0) + gradudy(1) + gradudz(2));
out_hess << (hessians[ver](0,0) + hessians[ver](1,1) + hessians[ver](2,2));
if (i == (e->getNumVertices() - 1)){
out_ls << "};" << std::endl;
out_hess << "};" << std::endl;
......@@ -184,7 +181,7 @@ void meshMetric::exportInfo(const char * fileendname)
else out_grad << ",";
for (int l=0;l<3;l++){
out_metric << _nodalMetrics[ver](k,l);
out_hessmat << dgrads[k][ver](l);
out_hessmat << hessians[ver](k,l);
if ((k == 2) && (l == 2) && (i == (e->getNumVertices() - 1))) {
out_metric << "};" << std::endl;
out_hessmat << "};" << std::endl;
......@@ -315,9 +312,9 @@ void meshMetric::computeHessian()
if (duNorm == 0. || _technique == meshMetric::HESSIAN ||
_technique == meshMetric::EIGENDIRECTIONS || _technique == meshMetric::EIGENDIRECTIONS_LINEARINTERP_H) duNorm = 1.;
grads[ver] = SVector3(dudx/duNorm,dudy/duNorm,dudz/duNorm);
dgrads[0][ver] = SVector3(d2udx2,d2udxy,d2udxz);
dgrads[1][ver] = SVector3(d2udxy,d2udy2,d2udyz);
dgrads[2][ver] = SVector3(d2udxz,d2udyz,d2udz2);
hessians[ver](0,0) = d2udx2; hessians[ver](0,1) = d2udxy; hessians[ver](0,2) = d2udxz;
hessians[ver](1,0) = d2udxy; hessians[ver](1,1) = d2udy2; hessians[ver](1,2) = d2udyz;
hessians[ver](2,0) = d2udxz; hessians[ver](2,1) = d2udyz; hessians[ver](2,2) = d2udz2;
}
}
......@@ -325,16 +322,11 @@ void meshMetric::computeMetricLevelSet(MVertex *ver, SMetric3 &hessian, SMetric
{
double signed_dist;
SVector3 gradudx, gradudy,gradudz, gr;
SVector3 gr;
if(ver != NULL){
signed_dist = vals[ver];
gr = grads[ver];
gradudx = dgrads[0][ver];
gradudy = dgrads[1][ver];
gradudz = dgrads[2][ver];
hessian(0,0) = gradudx(0); hessian(0,1) = gradudx(1); hessian(0,2) = gradudx(2);
hessian(1,0) = gradudy(0); hessian(1,1) = gradudy(1); hessian(1,2) = gradudy(2);
hessian(2,0) = gradudz(0); hessian(2,1) = gradudz(1); hessian(2,2) = gradudz(2);
hessian = hessians[ver];
}
else if (ver == NULL){
signed_dist = (*_fct)(x,y,z);
......@@ -380,15 +372,10 @@ void meshMetric::computeMetricLevelSet(MVertex *ver, SMetric3 &hessian, SMetric
void meshMetric::computeMetricHessian(MVertex *ver, SMetric3 &hessian, SMetric3 &metric, double &size, double x, double y, double z)
{
SVector3 gradudx, gradudy,gradudz,gr;
SVector3 gr;
if(ver != NULL){
gr = grads[ver];
gradudx = dgrads[0][ver];
gradudy = dgrads[1][ver];
gradudz = dgrads[2][ver];
hessian(0,0) = gradudx(0); hessian(0,1) = gradudx(1); hessian(0,2) = gradudx(2);
hessian(1,0) = gradudy(0); hessian(1,1) = gradudy(1); hessian(1,2) = gradudy(2);
hessian(2,0) = gradudz(0); hessian(2,1) = gradudz(1); hessian(2,2) = gradudz(2);
hessian = hessians[ver];
}
else if (ver == NULL){
_fct->gradient(x,y,z,gr(0),gr(1),gr(2));
......@@ -422,16 +409,11 @@ void meshMetric::computeMetricFrey(MVertex *ver, SMetric3 &hessian, SMetric3 &m
{
double signed_dist;
SVector3 gradudx, gradudy,gradudz,gr;
SVector3 gr;
if(ver != NULL){
signed_dist = vals[ver];
gr = grads[ver];
gradudx = dgrads[0][ver];
gradudy = dgrads[1][ver];
gradudz = dgrads[2][ver];
hessian(0,0) = gradudx(0); hessian(0,1) = gradudx(1); hessian(0,2) = gradudx(2);
hessian(1,0) = gradudy(0); hessian(1,1) = gradudy(1); hessian(1,2) = gradudy(2);
hessian(2,0) = gradudz(0); hessian(2,1) = gradudz(1); hessian(2,2) = gradudz(2);
hessian = hessians[ver];
}
else if (ver == NULL){
signed_dist = (*_fct)(x,y,z);
......@@ -486,16 +468,11 @@ void meshMetric::computeMetricEigenDir(MVertex *ver, SMetric3 &hessian, SMetric
{
double signed_dist;
SVector3 gradudx, gradudy,gradudz,gVec;
SVector3 gVec;
if(ver != NULL){
signed_dist = vals[ver];
gVec = grads[ver];
gradudx = dgrads[0][ver];
gradudy = dgrads[1][ver];
gradudz = dgrads[2][ver];
hessian(0,0) = gradudx(0); hessian(0,1) = gradudx(1); hessian(0,2) = gradudx(2);
hessian(1,0) = gradudy(0); hessian(1,1) = gradudy(1); hessian(1,2) = gradudy(2);
hessian(2,0) = gradudz(0); hessian(2,1) = gradudz(1); hessian(2,2) = gradudz(2);
hessian = hessians[ver];
}
else if (ver == NULL){
signed_dist = (*_fct)(x,y,z);
......@@ -589,16 +566,11 @@ void meshMetric::computeMetricIsoLinInterp(MVertex *ver, SMetric3 &hessian, SMe
{
double signed_dist;
SVector3 gradudx, gradudy,gradudz,gr;
SVector3 gr;
if(ver != NULL){
signed_dist = vals[ver];
gr = grads[ver];
gradudx = dgrads[0][ver];
gradudy = dgrads[1][ver];
gradudz = dgrads[2][ver];
hessian(0,0) = gradudx(0); hessian(0,1) = gradudx(1); hessian(0,2) = gradudx(2);
hessian(1,0) = gradudy(0); hessian(1,1) = gradudy(1); hessian(1,2) = gradudy(2);
hessian(2,0) = gradudz(0); hessian(2,1) = gradudz(1); hessian(2,2) = gradudz(2);
hessian = hessians[ver];
}
else if (ver == NULL){
signed_dist = (*_fct)(x,y,z);
......@@ -610,75 +582,17 @@ void meshMetric::computeMetricIsoLinInterp(MVertex *ver, SMetric3 &hessian, SMe
double dist = fabs(signed_dist);
double norm = gr.normalize();
double h_dist = (signed_dist < _E && signed_dist > _E_moins && norm != 0.0) ? hmin + ((hmax-hmin)/_E)*dist : hmax; // the charcteristic element size in all directions - linear interp between hmin and hmax
double lambda = 1./h_dist/h_dist;
SMetric3 H;
H(0,0) = H(1,1) = lambda;
H(2,2) = (_dim == 3)? lambda : 1.;
hessian = H;
size = lambda;
size = hmax; // the characteristic element size in all directions - linear interp between hmin and hmax
if (norm != 0.) {
if ((signed_dist >= 0) && (signed_dist < _E)) size = hmin + ((hmax-hmin)/_E)*dist;
else if ((signed_dist < 0) && (signed_dist > _E_moins)) size = hmin - ((hmax-hmin)/_E_moins)*dist;
}
void meshMetric::computeMetricScaledHessian(MVertex *ver, SMetric3 &hessian, SMetric3 &metric, double &size, double x, double y, double z)
{
double lambda = 1./size/size;
metric(0,0) = lambda; metric(0,1) = 0.; metric(0,2) = 0.;
metric(1,0) = 0.; metric(1,1) = lambda; metric(1,2) = 0.;
metric(2,0) = 0.; metric(2,1) = 0.; metric(2,2) = (_dim == 3)? lambda : 1.;
printf("Exit : computeMetricScaledHessian should be repaired \n");
exit(1);
// std::list<double> lambda1, lambda2, lambda3;
// std::list<SVector3> t1, t2, t3;
// // Compute and store eignvalues and eigenvectors of Hessian
// SMetric3 H;
// SVector3 gradudx = dgrads[0][ver];
// SVector3 gradudy = dgrads[1][ver];
// SVector3 gradudz = dgrads[2][ver];
// hessian(0,0) = gradudx(0); hessian(0,1) = gradudx(1); hessian(0,2) = gradudx(2);
// hessian(1,0) = gradudy(0); hessian(1,1) = gradudy(1); hessian(1,2) = gradudy(2);
// hessian(2,0) = gradudz(0); hessian(2,1) = gradudz(1); hessian(2,2) = gradudz(2);
// fullMatrix<double> V(3,3);
// fullVector<double> S(3);
// hessian.eig(V,S);
// lambda1.push_back(fabs(S(0)));
// lambda2.push_back(fabs(S(1)));
// if (_dim == 3) lambda3.push_back(fabs(S(2)));
// t1.push_back(SVector3(V(0,0),V(1,0),V(2,0)));
// t2.push_back(SVector3(V(0,1),V(1,1),V(2,1)));
// t3.push_back(SVector3(V(0,2),V(1,2),V(2,2)));
// // Calculate scale factor based on max. eigenvalue and min. element length
// const double maxLambda1 = *std::max_element(lambda1.begin(), lambda1.end());
// const double maxLambda2 = *std::max_element(lambda2.begin(), lambda2.end());
// double maxLambda;
// if (_dim == 3) {
// const double maxLambda3 = *std::max_element(lambda3.begin(),lambda3.end());
// maxLambda = std::max(std::max(maxLambda1, maxLambda2), maxLambda3);
// }
// else maxLambda = std::max(maxLambda1, maxLambda2);
// const double factor = 1./(hmin*hmin*maxLambda);
// // Rescale metric
// const double lMinBound = 1./(hmax*hmax);
// std::list<double>::iterator itL1 = lambda1.begin(), itL2 = lambda2.begin(), itL3 = lambda3.begin();
// std::list<SVector3>::iterator itT1 = t1.begin(), itT2 = t2.begin(), itT3 = t3.begin();
// for (v2t_cont::iterator it=_adj.begin(); it!=_adj.end(); it++) {
// MVertex *ver = it->first;
// const double l1 = std::max(*itL1*factor, lMinBound);
// const double l2 = std::max(*itL2*factor, lMinBound);
// const double l3 = (_dim == 3) ? std::max(*itL3*factor, lMinBound) : 1.;
// const double lMax = (_dim == 3) ? std::max(std::max(l1, l2), l3) : std::max(l1, l2);
// metric = SMetric3(l1,l2,l3,*itT1,*itT2,*itT3);
// size = 1./sqrt(lMax);
// // setOfDetMetric[metricNumber].insert(std::make_pair(ver,sqrt(metric.determinant())));
// itL1++; itL2++; if (_dim == 3) itL3++;
// itT1++; itT2++; itT3++;
// }
}
......@@ -770,10 +684,8 @@ void meshMetric::computeMetric(int metricNumber)
case (EIGENDIRECTIONS) : computeMetricEigenDir(ver, hessian, metric, size); break;
case (EIGENDIRECTIONS_LINEARINTERP_H) : computeMetricEigenDir(ver, hessian, metric,size); break;
case (ISOTROPIC_LINEARINTERP_H) : computeMetricIsoLinInterp(ver, hessian, metric, size); break;
case (SCALED_HESSIAN) : computeMetricScaledHessian(ver, hessian,metric, size); break;
}
_hessian[ver] = hessian;
setOfSizes[metricNumber].insert(std::make_pair(ver,size));
setOfMetrics[metricNumber].insert(std::make_pair(ver,metric));
......@@ -847,7 +759,6 @@ void meshMetric::operator() (double x, double y, double z, SMetric3 &metr, GEnti
case (EIGENDIRECTIONS) : computeMetricEigenDir(NULL, hessian,metric,size,x,y,z); break;
case (EIGENDIRECTIONS_LINEARINTERP_H) : computeMetricEigenDir(NULL, hessian,metric,size,x,y,z); break;
case (ISOTROPIC_LINEARINTERP_H) : computeMetricIsoLinInterp(NULL, hessian,metric,size,x,y,z); break;
case (SCALED_HESSIAN) : computeMetricScaledHessian(NULL, hessian,metric, size,x,y,z); break;
}
newSetOfMetrics[iMetric] = metric;
}
......@@ -921,7 +832,7 @@ void meshMetric::operator() (double x, double y, double z, SMetric3 &metr, GEnti
double meshMetric::getLaplacian (MVertex *v) {
MVertex *vNew = _vertexMap[v->getNum()];
std::map<MVertex*, SMetric3 >::const_iterator it = _hessian.find(vNew);
std::map<MVertex*, SMetric3 >::const_iterator it = hessians.find(vNew);
SMetric3 h = it->second;
return h(0,0)+h(1,1)+h(2,2);
}
......
Mesh/meshMetric.h
+ 4
− 4
View file @ eee6f908
......@@ -23,7 +23,7 @@ class STensor3;
class meshMetric: public Field {
public:
typedef enum {LEVELSET=1,HESSIAN=2, FREY=3, EIGENDIRECTIONS=4, EIGENDIRECTIONS_LINEARINTERP_H=5,
ISOTROPIC_LINEARINTERP_H=6, SCALED_HESSIAN=7} MetricComputationTechnique;
ISOTROPIC_LINEARINTERP_H=6} MetricComputationTechnique;
private:
// intersect all metrics added in "setOfMetrics", preserve eigendirections of the "most anisotropic" metric
void updateMetrics();
......@@ -41,13 +41,14 @@ class meshMetric: public Field {
std::map<int, MVertex*> _vertexMap;
std::map<MVertex*,double> vals;
std::map<MVertex*,SVector3> grads,dgrads[3];
std::map<MVertex*,SVector3> grads;
std::map<MVertex*,SMetric3> hessians;
public:
typedef std::map<MVertex*,SMetric3> nodalMetricTensor;
typedef std::map<MVertex*,double> nodalField;
private:
nodalMetricTensor _nodalMetrics,_hessian;
nodalMetricTensor _nodalMetrics;
nodalField _nodalSizes, _detMetric;
std::map<int,nodalMetricTensor> setOfMetrics;
......@@ -99,7 +100,6 @@ class meshMetric: public Field {
void computeMetricFrey(MVertex *ver, SMetric3 &hessian, SMetric3 &metric, double &size, double x=0.0, double y = 0.0, double z = 0.0);
void computeMetricEigenDir(MVertex *ver, SMetric3 &hessian, SMetric3 &metric, double &size, double x=0.0, double y = 0.0, double z = 0.0);
void computeMetricIsoLinInterp(MVertex *ver, SMetric3 &hessian, SMetric3 &metric, double &size, double x=0.0, double y = 0.0, double z = 0.0);
void computeMetricScaledHessian(MVertex *ver, SMetric3 &hessian, SMetric3 &metric, double &size, double x=0.0, double y = 0.0, double z = 0.0);
void computeValues();
void computeHessian();
......
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