//------------- Undersampling Simulation -------------
void IMT_MRGui::simu_undersampling(agile::GPUMatrix<TType>* Coil, unsigned num_coils)
{
unsigned num_rows = Coil->getNumRows();
unsigned num_columns = Coil->getNumColumns();
agile::GPUMatrix<TType_real> Simul_matrix;
std::vector<TType_real> simul_vector;
std::vector<TType_real> simul_vector_2;
simul_vector.clear();
for(int r=0; r<num_rows; ++r)
{
if( ((r % _factor_y) == 0) || ((r >= (num_rows-_ref_lines)/2) && (r < (num_rows+_ref_lines)/2)) )
for(int c=0; c<num_columns; ++c)
{
if( ((c % _factor_x) == 0) || ((c >= (num_columns-_ref_lines)/2) && (c < (num_columns+_ref_lines)/2)) )
simul_vector.push_back(1);
else
simul_vector.push_back(0);
}
else
for(int c=0; c<num_columns; ++c)
{
simul_vector.push_back(0);
}
}
unsigned num_rows_2;
unsigned num_columns_2;
bool fileexist = true;
QString path="simul_pattern.bin";
std::ifstream mat_file(path.toStdString().c_str(), std::ifstream::binary);
if (!mat_file.is_open()) //check if file exists
fileexist=false;
else
agile::readMatrixFile(path.toStdString().c_str(), num_rows_2, num_columns_2, simul_vector_2);
if(fileexist && ((num_rows_2 != num_rows)||(num_columns_2 != num_columns)))
{
Simul_matrix.assignFromHost(num_rows, num_columns, &zero_vec_cpu_[0]);
std::cerr<<"\n Simulation Pattern Matrix Dimension problem - check simul_pattern.bin";
}
else if(fileexist)
{
Simul_matrix.assignFromHost(num_rows, num_columns, &simul_vector_2[0]);
qDebug()<<"\n Simulation Pattern Matrix - simul_pattern.bin - assigned";
}
else // assign calculated simul_vector
Simul_matrix.assignFromHost(num_rows, num_columns, &simul_vector[0]);
for(int i=0; i<num_coils; ++i)
{
agile::multiplyElementwise(Simul_matrix, Coil[i], Coil[i]);
}
}
void OBJWriter::write(const std::vector<boost::shared_ptr<glutils::Face> >& faces, const std::string& filename) {
std::ofstream file(filename);
std::ofstream mat_file(filename + ".mtl");
boost::filesystem::path p(filename + ".mtl");
file << "mtllib " << p.filename().string() << std::endl;
file << std::endl;
file << "# List of geometric vertices" << std::endl;
for (int j = 0; j < faces.size(); ++j) {
for (int k = 0; k < faces[j]->vertices.size(); ++k) {
file << "v " << faces[j]->vertices[k].position.x << " " << faces[j]->vertices[k].position.y << " " << faces[j]->vertices[k].position.z << std::endl;
}
}
file << std::endl;
file << "# List of texture coordinates" << std::endl;
for (int j = 0; j < faces.size(); ++j) {
if (faces[j]->vertices.size() < 3) continue;
if (faces[j]->vertices[0].texCoord.x == 0 && faces[j]->vertices[0].texCoord.y == 0 && faces[j]->vertices[1].texCoord.x == 0 && faces[j]->vertices[1].texCoord.y == 0 && faces[j]->vertices[2].texCoord.x == 0 && faces[j]->vertices[2].texCoord.y == 0) continue;
for (int k = 0; k < faces[j]->vertices.size(); ++k) {
file << "vt " << faces[j]->vertices[k].texCoord.x << " " << faces[j]->vertices[k].texCoord.y << std::endl;
}
}
file << std::endl;
file << "# List of vertex normals" << std::endl;
for (int j = 0; j < faces.size(); ++j) {
for (int k = 0; k < faces[j]->vertices.size(); ++k) {
file << "vn " << faces[j]->vertices[k].normal.x << " " << faces[j]->vertices[k].normal.y << " " << faces[j]->vertices[k].normal.z << std::endl;
}
}
file << std::endl;
int positionId = 1;
int texCoordId = 1;
int materialId = 1;
Material material;
for (int j = 0; j < faces.size(); ++j) {
if (faces[j]->vertices.size() < 3) continue;
bool textureEnabled = true;
if (faces[j]->texture.empty()) {
textureEnabled = false;
}
if (faces[j]->vertices[0].texCoord.x == 0 && faces[j]->vertices[0].texCoord.y == 0 && faces[j]->vertices[1].texCoord.x == 0 && faces[j]->vertices[1].texCoord.y == 0 && faces[j]->vertices[2].texCoord.x == 0 && faces[j]->vertices[2].texCoord.y == 0) {
textureEnabled = false;
}
Material new_material;
if (textureEnabled) {
new_material = Material(faces[j]->texture);
}
else {
new_material = Material(faces[j]->vertices[0].color);
}
if (!new_material.equals(material)) {
material = new_material;
mat_file << "newmtl Material" << materialId << std::endl;
mat_file << material.to_string() << std::endl;
file << std::endl;
file << "usemtl Material" << materialId << std::endl;
materialId++;
}
for (int k = 0; k < faces[j]->vertices.size() / 3; ++k) {
file << "f ";
for (int l = 0; l < 3; ++l) {
if (l > 0) {
file << " ";
}
file << positionId;
file << "/";
if (faces[j]->vertices[k].texCoord.x != 0 || faces[j]->vertices[k].texCoord.y != 0 || faces[j]->vertices[k + 1].texCoord.x != 0 || faces[j]->vertices[k + 1].texCoord.y != 0 || faces[j]->vertices[k + 2].texCoord.x != 0 || faces[j]->vertices[k + 2].texCoord.y != 0) {
file << texCoordId++;
}
file << "/" << positionId++;
}
file << std::endl;
}
}
file.close();
}