void mathFunction::calculateCurl(std::vector<ngl::Vec3> *_field, std::vector<ngl::Vec3> *curlField, std::vector<float> *curlMagnitude, int _noCells, float _cellSize)
{
//Set up needed variables
ngl::Vec3 field_i1jk;
ngl::Vec3 field_i0jk;
ngl::Vec3 field_ij1k;
ngl::Vec3 field_ij0k;
ngl::Vec3 field_ijk1;
ngl::Vec3 field_ijk0;
float dfxdy;
float dfxdz;
float dfydx;
float dfydz;
float dfzdx;
float dfzdy;
ngl::Vec3 resultCurl;
for (int k=1; k<(_noCells-1); k++)
{
for (int j=1; j<(_noCells-1); j++)
{
for (int i=1; i<(_noCells-1); i++)
{
//Find values of field at (i+1,j,k), (i-1,j,k) etc.
field_i1jk=_field->at(getVectorIndex(i+1, j, k, _noCells));
field_i0jk=_field->at(getVectorIndex(i-1, j, k, _noCells));
field_ij1k=_field->at(getVectorIndex(i, j+1, k, _noCells));
field_ij0k=_field->at(getVectorIndex(i, j-1, k, _noCells));
field_ijk1=_field->at(getVectorIndex(i, j, k+1, _noCells));
field_ijk0=_field->at(getVectorIndex(i, j, k-1, _noCells));
//Calculate approximate value for df_x/dy etc
//df_x/dy=(1/2*cellSize)*(field(i+1,j,k)-field(i-1,j,k))
dfxdy=(0.5/_cellSize)*(field_ij1k.m_x-field_ij0k.m_x);
dfxdz=(0.5/_cellSize)*(field_ijk1.m_x-field_ijk0.m_x);
dfydx=(0.5/_cellSize)*(field_i1jk.m_y-field_i0jk.m_y);
dfydz=(0.5/_cellSize)*(field_ijk1.m_y-field_ijk0.m_y);
dfzdx=(0.5/_cellSize)*(field_i1jk.m_z-field_i0jk.m_z);
dfzdy=(0.5/_cellSize)*(field_ij1k.m_z-field_ij0k.m_z);
//Curl is nabla crossed with velocity
//Curl_x=df_z/dy - df_y/dz
resultCurl.m_x=(dfzdy-dfydz);
resultCurl.m_y=(dfxdz-dfzdx);
resultCurl.m_z=(dfydx-dfxdy);
//Set curl value to field
curlField->at(getVectorIndex(i,j,k, _noCells))=resultCurl;
//Calculate magnitude of curl
curlMagnitude->at(getVectorIndex(i,j,k, _noCells))=resultCurl.length();
}
}
}
}
void DB_Scores::Delete(int sid) {
int vector_index = getVectorIndex(sid);
if (vector_index >= 0) {
score_data.erase(score_data.begin()+vector_index);
record_change_count++;
this->Write();
}
}
void MainWindow::updateCheckboxArray(std::vector<std::string>& vector, unsigned int& counter, std::string instr, int arg){
if (arg==0){//the checkbox was set to not checked
vector.erase(vector.begin()+getVectorIndex(instr, vector));
counter--;
}else{//the checkbox was set to checked
vector.push_back(instr);
counter++;
}
ui->numGJF->setText(QVariant(std::to_string(methodCount*basisCount*jobtypeCount*solvCount).c_str()).toString());
}
void DB_Scores::Update(db_score_data score_data) {
int vector_index = getVectorIndex(score_data.sid);
if (vector_index >= 0) {
this->Delete(score_data.sid);
this->score_data.push_back(score_data);
record_change_count++;
this->Write();
}
}
float mathFunction::trilinearInterpFloat(std::vector<float> *_function, int _index0_X, int _index0_Y, int _index0_Z, int _index1_X, int _index1_Y, int _index1_Z, ngl::Vec3 _indexActual, int _noCells)
{
float result=0.0;
//Calculate differences to be used in the interpolation
//Don't need to divide by anything as indices and hence index1-index0 would give 1
float x_diff=_indexActual.m_x-(float)_index0_X;
float y_diff=_indexActual.m_y-(float)_index0_Y;
float z_diff=_indexActual.m_z-(float)_index0_Z;
//Find indices to be used when finding values of the function
int index_000=getVectorIndex(_index0_X, _index0_Y, _index0_Z, _noCells);
int index_100=getVectorIndex(_index1_X, _index0_Y, _index0_Z, _noCells);
int index_001=getVectorIndex(_index0_X, _index0_Y, _index1_Z, _noCells);
int index_101=getVectorIndex(_index1_X, _index0_Y, _index1_Z, _noCells);
int index_110=getVectorIndex(_index1_X, _index1_Y, _index0_Z, _noCells);
int index_010=getVectorIndex(_index0_X, _index1_Y, _index0_Z, _noCells);
int index_011=getVectorIndex(_index0_X, _index1_Y, _index1_Z, _noCells);
int index_111=getVectorIndex(_index1_X, _index1_Y, _index1_Z, _noCells);
//Find function values for the various indices
float function_000=_function->at(index_000);
float function_100=_function->at(index_100);
float function_010=_function->at(index_010);
float function_001=_function->at(index_001);
float function_110=_function->at(index_110);
float function_101=_function->at(index_101);
float function_011=_function->at(index_011);
float function_111=_function->at(index_111);
//Interpolate along x
float interpX_00=((1-x_diff)*function_000)+(x_diff*function_100);
float interpX_10=((1-x_diff)*function_010)+(x_diff*function_110);
float interpX_01=((1-x_diff)*function_001)+(x_diff*function_101);
float interpX_11=((1-x_diff)*function_011)+(x_diff*function_111);
//Interpolate along y
float interpY_0=((1-y_diff)*interpX_00)+(y_diff*interpX_10);
float interpY_1=((1-y_diff)*interpX_01)+(y_diff*interpX_11);
//Interpolate along z
float interpZ=((1-z_diff)*interpY_0)+(z_diff*interpY_1);
//Return result
result=interpZ;
return result;
}
float Grid::trilinearInterpFloat(std::vector<float> *_function, int _index0_X, int _index0_Y, int _index0_Z, int _index1_X, int _index1_Y, int _index1_Z, ngl::Vec3 _indexActual)
{
float result=0;
//Calculate differences to be used in the interpolation
float x_diff=(_indexActual.m_x-_index0_X)/(_index1_X-_index0_X);
float y_diff=(_indexActual.m_y-_index0_Y)/(_index1_Y-_index0_Y);
float z_diff=(_indexActual.m_z-_index0_Z)/(_index1_Z-_index0_Z);
//Find indices to be used when finding values of the function
int index_000=getVectorIndex(_index0_X, _index0_Y, _index0_Z);
int index_100=getVectorIndex(_index1_X, _index0_Y, _index0_Z);
int index_001=getVectorIndex(_index0_X, _index0_Y, _index1_Z);
int index_101=getVectorIndex(_index1_X, _index0_Y, _index1_Z);
int index_110=getVectorIndex(_index1_X, _index1_Y, _index0_Z);
int index_010=getVectorIndex(_index0_X, _index1_Y, _index0_Z);
int index_011=getVectorIndex(_index0_X, _index1_Y, _index1_Z);
int index_111=getVectorIndex(_index1_X, _index1_Y, _index1_Z);
//Find function values for the various indices
float function_000=_function->at(index_000);
float function_100=_function->at(index_100);
float function_001=_function->at(index_001);
float function_101=_function->at(index_101);
float function_110=_function->at(index_110);
float function_010=_function->at(index_010);
float function_011=_function->at(index_011);
float function_111=_function->at(index_111);
//Interpolate along x
float interpX_00=((1-x_diff)*function_000)+(x_diff*function_100);
float interpX_01=((1-x_diff)*function_001)+(x_diff*function_101);
float interpX_10=((1-x_diff)*function_010)+(x_diff*function_110);
float interpX_11=((1-x_diff)*function_011)+(x_diff*function_111);
//Interpolate along y
float interpY_0=((1-y_diff)*interpX_00)+(y_diff*interpX_10);
float interpY_1=((1-y_diff)*interpX_01)+(y_diff*interpX_11);
//Interpolate along z
float interpZ=((1-z_diff)*interpY_0)+(z_diff*interpY_1);
//Return result
result=interpZ;
return result;
}
void DB_Scores::Update(vector<db_score_data> score_data) {
int vector_index;
for (int i = 0; i < (int) score_data.size(); i++) {
vector_index = getVectorIndex(score_data[i].sid);
if (vector_index >= 0) {
this->Delete(score_data[i].sid);
this->score_data.push_back(score_data[i]);
record_change_count++;
} else {
this->Insert(score_data);
}
this->Write();
}
}
float Grid::calcDivergenceVec3(std::vector<ngl::Vec3> *_field, int _index_X, int _index_Y, int _index_Z)
{
float result;
ngl::Vec3 fieldValue_i1jk=_field->at(getVectorIndex((_index_X+1), _index_Y, _index_Z));
ngl::Vec3 fieldValue_i0jk=_field->at(getVectorIndex((_index_X-1), _index_Y, _index_Z));
ngl::Vec3 fieldValue_ij1k=_field->at(getVectorIndex(_index_X, (_index_Y+1), _index_Z));
ngl::Vec3 fieldValue_ij0k=_field->at(getVectorIndex(_index_X, (_index_Y-1), _index_Z));
ngl::Vec3 fieldValue_ijk1=_field->at(getVectorIndex(_index_X, _index_Y, (_index_Z+1)));
ngl::Vec3 fieldValue_ijk0=_field->at(getVectorIndex(_index_X, _index_Y, (_index_Z-1)));
float dfxdx=fieldValue_i1jk.m_x-fieldValue_i0jk.m_x;
float dfydy=fieldValue_ij1k.m_y-fieldValue_ij0k.m_y;
float dfzdz=fieldValue_ijk1.m_z-fieldValue_ijk0.m_z;
float constant=0.5/m_cellSize;
result=constant*(dfxdx+dfydy+dfzdz);
return result;
}
ngl::Vec3 Grid::calcDivergenceFloat(std::vector<float> *_field, int _index_X, int _index_Y, int _index_Z)
{
ngl::Vec3 result;
float fieldValue_i1jk=_field->at(getVectorIndex((_index_X+1), _index_Y, _index_Z));
float fieldValue_i0jk=_field->at(getVectorIndex((_index_X-1), _index_Y, _index_Z));
float fieldValue_ij1k=_field->at(getVectorIndex(_index_X, (_index_Y+1), _index_Z));
float fieldValue_ij0k=_field->at(getVectorIndex(_index_X, (_index_Y-1), _index_Z));
float fieldValue_ijk1=_field->at(getVectorIndex(_index_X, _index_Y, (_index_Z+1)));
float fieldValue_ijk0=_field->at(getVectorIndex(_index_X, _index_Y, (_index_Z-1)));
float dfdx=fieldValue_i1jk-fieldValue_i0jk;
float dfdy=fieldValue_ij1k-fieldValue_ij0k;
float dfdz=fieldValue_ijk1-fieldValue_ijk0;
float constant=0.5/m_cellSize;
result=ngl::Vec3(dfdx, dfdy, dfdz);
result=constant*result;
return result;
}
void mathFunction::linearSystemSolveFloat(std::vector<float> *result, std::vector<float> *_initField, std::vector<float> *_b, float _Aii, float _Aij, int _iterations, int _noCells, float _setMinimumValue)
{
///To do: Check for convergence
/// Fix issue of less than minimum values
//Set up variables
float p_ijk;
float p_i1jk;
float p_i0jk;
float p_ij1k;
float p_ij0k;
float p_ijk1;
float p_ijk0;
int index;
float sumNeighbours;
float newValue;
//Loop over iterations
for (int iterationCount=0; iterationCount<_iterations; iterationCount++)
{
//Loop over non-boundary cells
for (int k=1; k<(_noCells-1); k++)
{
for (int j=1; j<(_noCells-1); j++)
{
for (int i=1; i<(_noCells-1); i++)
{
//Get index for current cell (i,j,k)
index=getVectorIndex(i,j,k, _noCells);
//Find initField of itself and 6 nearest neighbours
p_ijk=_initField->at(index);
p_i1jk=_initField->at(getVectorIndex(i+1,j,k, _noCells));
p_i0jk=_initField->at(getVectorIndex(i-1,j,k, _noCells));
p_ij1k=_initField->at(getVectorIndex(i,j+1,k, _noCells));
p_ij0k=_initField->at(getVectorIndex(i,j-1,k, _noCells));
p_ijk1=_initField->at(getVectorIndex(i,j,k+1, _noCells));
p_ijk0=_initField->at(getVectorIndex(i,j,k-1, _noCells));
//Add nearest neighbour pressures
sumNeighbours=_Aij*(p_i1jk + p_i0jk + p_ij1k + p_ij0k + p_ijk1 + p_ijk0);
//Subtract from b to find new pressure at (i,j,k)
newValue=(1.0/_Aii)*(_b->at(index)-sumNeighbours);
//Set result at (i,j,k) to this new pressure value
///Clamp to minimum value.
/// This should probably not be necessary, and shows a problem with the linear solver/parameters passed in
if (newValue>=_setMinimumValue)
{
result->at(index)=newValue;
}
else
{
result->at(index)=_setMinimumValue;
}
///This is probably what should be used
// result->at(index)=newValue;
}
}
}
//Set values found to initField so they will be used as guess for the next iteration
_initField=result;
}
}
void Grid::linearSystemSolve(std::vector<float> *result, std::vector<float> *_initField, std::vector<float> *_b, float _Aii, float _Aij, int _iterations)
{
//Set up variables
float p_ijk;
float p_i1jk;
float p_i0jk;
float p_ij1k;
float p_ij0k;
float p_ijk1;
float p_ijk0;
int index;
float sumNeighbours;
float newValue;
//Loop over iterations
for (int iterationCount=0; iterationCount<_iterations; iterationCount++)
{
//Loop over i,j,k
for (int k=1; k<(m_noCells-1); k++)
{
for (int j=1; j<(m_noCells-1); j++)
{
for (int i=1; i<(m_noCells-1); i++)
{
//Get index for this cell (i,j,k)
index=getVectorIndex(i,j,k);
//Find initField of itself and 6 nearest neighbours
p_ijk=_initField->at(index);
p_i1jk=_initField->at(getVectorIndex(i+1,j,k));
p_i0jk=_initField->at(getVectorIndex(i-1,j,k));
p_ij1k=_initField->at(getVectorIndex(i,j+1,k));
p_ij0k=_initField->at(getVectorIndex(i,j-1,k));
p_ijk1=_initField->at(getVectorIndex(i,j,k+1));
p_ijk0=_initField->at(getVectorIndex(i,j,k-1));
//Add nearest neighbour pressures
sumNeighbours=_Aij*(p_i1jk + p_i0jk + p_ij1k + p_ij0k + p_ijk1 + p_ijk0);
//Subtract from b to find new pressure at (i,j,k)
// newValue=(1.0/_Aii)*(_b->at(index)-sumNeighbours);
newValue=(1.0/_Aii)*(sumNeighbours+p_ijk);
//Set result at (i,j,k) to this new pressure value
result->at(index)=newValue;
}
}
}
//Check for convergence?
//Set values found to start for next iteration
_initField=result;
}
}
