int main()
{
Mesquite::MeshImpl mesh;
MsqPrintError err(cout);
mesh.read_vtk(MESH_FILES_DIR "2D/vtk/quads/untangled/square_quad_2.vtk", err);
if (err) return 1;
//create geometry: plane z=0, normal (0,0,1)
Vector3D pnt(0,0,5);
Vector3D s_norm(0,0,1);
Mesquite::PlanarDomain msq_geom(s_norm, pnt);
// creates an intruction queue
LaplaceWrapper laplacian_smoother;
mesh.write_vtk("original_mesh.vtk", err);
if (err) return 1;
// launches optimization on mesh_set1
MeshDomainAssoc mesh_and_domain = MeshDomainAssoc(&mesh, &msq_geom);
laplacian_smoother.run_instructions(&mesh_and_domain, err);
if (err) return 1;
mesh.write_vtk("smoothed_mesh.vtk", err);
if (err) return 1;
}
int main()
{
MsqPrintError err(cout);
Mesquite::MeshImpl mesh;
mesh.read_vtk(MESH_FILES_DIR "3D/VTK/tire.vtk", err);
if (err) return 1;
// creates an intruction queue
InstructionQueue queue1;
// creates a mean ratio quality metric ...
IdealWeightInverseMeanRatio mean(err);
if (err) return 1;
LPtoPTemplate obj_func(&mean, 1, err);
if (err) return 1;
// creates the optimization procedures
// ConjugateGradient* pass1 = new ConjugateGradient( obj_func, err );
FeasibleNewton pass1( &obj_func, true );
//perform optimization globally
pass1.use_global_patch();
if (err) return 1;
QualityAssessor mean_qa=QualityAssessor(&mean);
//**************Set termination criterion****************
//perform 1 pass of the outer loop (this line isn't essential as it is
//the default behavior).
TerminationCriterion tc_outer;
tc_outer.add_iteration_limit( 1 );
pass1.set_outer_termination_criterion(&tc_outer);
//perform the inner loop until a certain objective function value is
//reached. The exact value needs to be determined (about 18095).
//As a safety, also stop if the time exceeds 10 minutes (600 seconds).
TerminationCriterion tc_inner;
tc_inner.add_absolute_quality_improvement( 13975 );
// tc_inner.add_absolute_quality_improvement( 13964.93818 );
tc_inner.add_cpu_time( 1800 );
pass1.set_inner_termination_criterion(&tc_inner);
//used for cg to get some info
// pass1->set_debugging_level(2);
// adds 1 pass of pass1 to mesh_set1
queue1.add_quality_assessor(&mean_qa,err);
if (err) return 1;
queue1.set_master_quality_improver(&pass1, err);
if (err) return 1;
queue1.add_quality_assessor(&mean_qa,err);
if (err) return 1;
mesh.write_vtk("original_mesh.vtk", err);
if (err) return 1;
// launches optimization on mesh_set1
queue1.run_instructions(&mesh, err);
if (err) return 1;
mesh.write_vtk("smoothed_mesh.vtk", err);
if (err) return 1;
print_timing_diagnostics( cout );
return 0;
}
int main()
{
/* Reads a Mesh file */
const char *file_name =
// MESH_FILES_DIR "2D/vtk/tris/untangled/equil_tri2.vtk";
// MESH_FILES_DIR "2D/vtk/tris/untangled/tri_20258.vtk";
// MESH_FILES_DIR "3D/vtk/tets/untangled/tet_1.vtk";
// MESH_FILES_DIR "3D/vtk/hexes/untangled/cube_tet_2.vtk";
MESH_FILES_DIR "3D/vtk/tets/untangled//tire.vtk";
printf("Loading mesh set 1\n");
MsqPrintError err( cout );
Mesquite::MeshImpl mesh;
mesh.read_vtk(file_name, err);
if (err) return 1;
// Creates an intruction queue
// printf("Creating instruction queue\n");
InstructionQueue queue1;
// Creates a condition number quality metric
// printf("Creating quality metric\n");
ConditionNumberQualityMetric cond_no;
// Create the NonSmooth Steepest Descent procedures
// printf("creating optimizer\n");
NonSmoothDescent minmax_method( &cond_no );
// Set a termination criterion
TerminationCriterion tc2;
tc2.add_iteration_limit( 1 );
minmax_method.set_outer_termination_criterion(&tc2);
// Set up the quality assessor
// printf("Setting up the quality assessor\n");
QualityAssessor quality_assessor=QualityAssessor(&cond_no);
// assess the quality of the initial mesh
queue1.add_quality_assessor(&quality_assessor, err);
if (err) return 1;
// Set the max min method to be the master quality improver
queue1.set_master_quality_improver(&minmax_method, err);
if (err) return 1;
// assess the quality of the final mesh
queue1.add_quality_assessor(&quality_assessor, err);
if (err) return 1;
// write out the original mesh
// printf("Writing out the original mesh\n");
mesh.write_vtk("original_mesh.vtk", err);
if (err) return 1;
// launches optimization on mesh_set1
// printf("Running the instruction queue\n");
queue1.run_instructions(&mesh, err);
if (err) return 1;
// write out the smoothed mesh
// printf("Writing out the final mesh\n");
mesh.write_vtk("smoothed_mesh.vtk", err);
if (err) return 1;
return 0;
}
int main()
{
MsqPrintError err(std::cout);
Mesquite::MeshImpl mesh;
mesh.read_vtk(MESH_FILES_DIR "3D/vtk/hexes/untangled/hexes_4by2by2.vtk", err);
// creates an intruction queue
InstructionQueue queue1;
// creates a mean ratio quality metric ...
IdealWeightInverseMeanRatio mean_ratio(err);
if (err) return 1;
ConditionNumberQualityMetric cond_num;
mean_ratio.set_averaging_method(QualityMetric::LINEAR);
// ... and builds an objective function with it
//LInfTemplate* obj_func = new LInfTemplate(mean_ratio);
LPtoPTemplate obj_func(&mean_ratio, 2, err);
if (err) return 1;
// creates the steepest descent optimization procedures
SteepestDescent pass1( &obj_func );
pass1.use_global_patch();
//if (err) return 1;
//pass1.set_maximum_iteration(6);
QualityAssessor stop_qa=QualityAssessor(&mean_ratio);
if (err) return 1;
stop_qa.add_quality_assessment(&cond_num);
if (err) return 1;
//**************Set stopping criterion****************
// StoppingCriterion sc1(&stop_qa,1.0,1.8);
//StoppingCriterion sc2(StoppingCriterion::NUMBER_OF_PASSES,1);
TerminationCriterion tc2;
tc2.add_iteration_limit( 1 );
// CompositeAndStoppingCriterion sc(&sc1,&sc2);
pass1.set_inner_termination_criterion(&tc2);
// adds 1 pass of pass1 to mesh_set1
// queue1.add_preconditioner(pass1, err);
// if (err) return 1;
queue1.add_quality_assessor(&stop_qa,err);
queue1.set_master_quality_improver(&pass1, err);
if (err) return 1;
queue1.add_quality_assessor(&stop_qa,err);
if (err) return 1;
// adds 1 passes of pass2 to mesh_set1
// mesh_set1.add_quality_pass(pass2);
mesh.write_vtk("original_mesh.vtk", err);
if (err) return 1;
// launches optimization on mesh_set1
queue1.run_instructions(&mesh, err);
if (err) return 1;
mesh.write_vtk("smoothed_mesh.vtk", err);
if (err) return 1;
return 0;
}
int main()
{
Mesquite::MeshImpl mesh;
MsqPrintError err(cout);
//create geometry: plane z=0, normal (0,0,1)
Vector3D pnt(0,0,0);
Vector3D s_norm(0,0,1);
Mesquite::PlanarDomain msq_geom(s_norm, pnt);
//mesh->read_vtk(MESH_FILES_DIR "2D/VTK/cube-clip-corner.vtk", err);
mesh.read_vtk(MESH_FILES_DIR "2D/VTK/hybrid_3quad_1tri.vtk", err);
if (err) return 1;
// creates an intruction queue
InstructionQueue queue1;
// creates a mean ratio quality metric ...
IdealWeightInverseMeanRatio mean_ratio(err);
if (err) return 1;
// mean_ratio->set_gradient_type(QualityMetric::NUMERICAL_GRADIENT);
// mean_ratio->set_hessian_type(QualityMetric::NUMERICAL_HESSIAN);
//mean_ratio->set_averaging_method(QualityMetric::SUM, err);
//MSQ_CHKERR(err);
// ... and builds an objective function with it
LPtoPTemplate obj_func(&mean_ratio, 2, err);
if (err) return 1;;
// creates the steepest descent, feas newt optimization procedures
//ConjugateGradient* pass1 = new ConjugateGradient( &obj_func, err );
FeasibleNewton pass1( &obj_func, true );
pass1.use_global_patch();
if (err) return 1;;
QualityAssessor qa=QualityAssessor(&mean_ratio);
if (err) return 1;;
// **************Set termination criterion****************
TerminationCriterion tc_inner;
tc_inner.add_iteration_limit( 1 );
//_inner.add_absolute_quality_improvement( OF_value );
//tc_inner.add_absolute_gradient_L2_norm( OF_value );
TerminationCriterion tc_outer;
//tc_outer.add_iteration_limit( 1 );
tc_outer.add_iteration_limit( 1 );
pass1.set_inner_termination_criterion(&tc_inner);
pass1.set_outer_termination_criterion(&tc_outer);
queue1.add_quality_assessor(&qa,err);
if (err) return 1;
// adds 1 pass of pass1 to mesh_set1
queue1.set_master_quality_improver(&pass1, err);
if (err) return 1;
queue1.add_quality_assessor(&qa,err);
if (err) return 1;
mesh.write_vtk("original_mesh.vtk",err);
if (err) return 1;
queue1.run_instructions(&mesh, &msq_geom, err);
if (err) return 1;
mesh.write_vtk("smoothed_mesh.vtk",err);
if (err) return 1;
//std::cout<<"\n\nNow running the shape wrapper.\n=n";
//ShapeImprovementWrapper wrap(100);
//wrap.run_instructions(mesh_set1, err); MSQ_CHKERR(err);
print_timing_diagnostics(cout);
return 0;
}
int main( int argc, char* argv[] )
{
/* init MPI */
int rank, nprocs;
if (MPI_SUCCESS != MPI_Init(&argc, &argv)) {
cerr << "MPI_Init failed." << endl;
return 2;
}
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
if (nprocs > 2) { cerr << "parallel_laplace_smooth test can only be run with 1 or 2 processors" << std::endl; return 0; }
const int debug=0; // 1,2,3 for more debug info
if (debug)
{
MsqDebug::enable(1);
if (debug > 1) MsqDebug::enable(2);
if (debug > 2) MsqDebug::enable(3);
}
/* create processor-specific file names */
ostringstream in_name, out_name, gold_name;
in_name << VTK_3D_DIR << "par_original_hex_mesh." << nprocs << "." << rank << ".vtk";
gold_name << VTK_3D_DIR << "par_smoothed_hex_mesh." << nprocs << "." << rank << ".vtk";
out_name << "par_smoothed_hex_mesh." << nprocs << "." << rank << ".vtk";
/* load different mesh files on each processor */
Mesquite::MsqError err;
Mesquite::MeshImpl mesh;
mesh.read_vtk(in_name.str().c_str(), err);
if (err) {cerr << err << endl; return 1;}
/* create parallel mesh instance, specifying tags
* containing parallel data */
Mesquite::ParallelMeshImpl parallel_mesh(&mesh, "GLOBAL_ID", "PROCESSOR_ID");
Mesquite::ParallelHelperImpl helper;
helper.set_communicator(MPI_COMM_WORLD);
helper.set_parallel_mesh(¶llel_mesh);
parallel_mesh.set_parallel_helper(&helper);
/* do Laplacian smooth */
LaplaceWrapper optimizer;
optimizer.set_vertex_movement_limit_factor(1.e-10);
optimizer.set_iteration_limit(2000);
optimizer.enable_culling(false);
optimizer.run_instructions(¶llel_mesh, err);
if (err) {cerr << err << endl; return 1; }
/* write mesh */
mesh.write_vtk(out_name.str().c_str(),err);
if (err) {cerr << err << endl; return 1;}
/* compare mesh with gold copy */
MeshImpl gold;
gold.read_vtk(gold_name.str().c_str(),err);
if (err) {cerr << err << endl; return 1;}
bool do_print=true;
double tol = 1.e-4;
bool diff = MeshUtil::meshes_are_different(mesh, gold, err, tol, do_print);
if (err) {cerr << err << endl; return 1;}
if (diff) {cerr << "Error, computed mesh different from gold copy" << std::endl; return 1;}
print_timing_diagnostics(cout);
MPI_Finalize();
return 0;
}
int main( )
{
Mesquite::MeshImpl mesh;
MsqPrintError err(cout);
mesh.read_vtk(VTK_2D_DIR "quads/tangled/tangled_quad.vtk", err);
if (err) return 1;
// Set Domain Constraint
Vector3D pnt(0,0,5);
Vector3D s_norm(0,0,1);
PlanarDomain msq_geom(s_norm, pnt);
// creates an intruction queue
InstructionQueue queue1;
// creates a mean ratio quality metric ...
ConditionNumberQualityMetric shape_metric;
UntangleBetaQualityMetric untangle(2);
Randomize pass0(.05);
// ... and builds an objective function with it
//LInfTemplate* obj_func = new LInfTemplate(shape_metric);
LInfTemplate obj_func(&untangle);
LPtoPTemplate obj_func2(&shape_metric, 2, err);
if (err) return 1;
// creates the steepest descent optimization procedures
ConjugateGradient pass1( &obj_func, err );
if (err) return 1;
//SteepestDescent* pass2 = new SteepestDescent( obj_func2 );
ConjugateGradient pass2( &obj_func2, err );
if (err) return 1;
pass2.use_element_on_vertex_patch();
if (err) return 1;
pass2.use_global_patch();
if (err) return 1;
QualityAssessor stop_qa=QualityAssessor(&shape_metric);
QualityAssessor stop_qa2=QualityAssessor(&shape_metric);
if (brief_output) {
stop_qa.disable_printing_results();
stop_qa2.disable_printing_results();
}
stop_qa.add_quality_assessment(&untangle);
// **************Set stopping criterion**************
//untangle beta should be 0 when untangled
TerminationCriterion sc1;
sc1.add_relative_quality_improvement( 0.000001 );
TerminationCriterion sc3;
sc3.add_iteration_limit( 10 );
TerminationCriterion sc_rand;
sc_rand.add_iteration_limit( 1 );
//StoppingCriterion sc1(&stop_qa,-1.0,.0000001);
//StoppingCriterion sc3(&stop_qa2,.9,1.00000001);
//StoppingCriterion sc2(StoppingCriterion::NUMBER_OF_PASSES,10);
//StoppingCriterion sc_rand(StoppingCriterion::NUMBER_OF_PASSES,1);
//either until untangled or 10 iterations
pass0.set_outer_termination_criterion(&sc_rand);
pass1.set_outer_termination_criterion(&sc1);
pass2.set_inner_termination_criterion(&sc3);
// adds 1 pass of pass1 to mesh_set1
queue1.add_quality_assessor(&stop_qa,err);
if (err) return 1;
//queue1.add_preconditioner(pass0,err);MSQ_CHKERR(err);
//queue1.add_preconditioner(pass1,err);MSQ_CHKERR(err);
//queue1.set_master_quality_improver(pass2, err); MSQ_CHKERR(err);
queue1.set_master_quality_improver(&pass1, err);
if (err) return 1;
queue1.add_quality_assessor(&stop_qa2,err);
if (err) return 1;
if (write_output)
mesh.write_vtk("original_mesh.vtk", err);
if (err) return 1;
// launches optimization on mesh_set1
MeshDomainAssoc mesh_and_domain = MeshDomainAssoc(&mesh, &msq_geom);
queue1.run_instructions(&mesh_and_domain, err);
if (err) return 1;
if (write_output)
mesh.write_vtk("smoothed_mesh.vtk", err);
if (err) return 1;
if (!brief_output)
print_timing_diagnostics(cout);
return 0;
}
int main(int argc, char* argv[])
{
const char* input_file = DEFAULT_INPUT;
const char* output_file = NULL;
switch (argc) {
default:
help(argv[0]);
case 3:
if (!strcmp(argv[2],"-h"))
help(argv[0]);
output_file = argv[2];
case 2:
if (!strcmp(argv[1],"-h"))
help(argv[0]);
input_file = argv[1];
case 1:
;
}
/* Read a VTK Mesh file */
MsqPrintError err(cout);
Mesquite::MeshImpl mesh;
mesh.read_vtk( input_file, err);
if (err) return 1;
// creates an intruction queue
InstructionQueue queue1;
// creates a mean ratio quality metric ...
ConditionNumberQualityMetric shape_metric;
EdgeLengthQualityMetric lapl_met;
lapl_met.set_averaging_method(QualityMetric::RMS);
// creates the laplacian smoother procedures
LaplacianSmoother lapl1;
QualityAssessor stop_qa=QualityAssessor(&shape_metric);
stop_qa.add_quality_assessment(&lapl_met);
//**************Set stopping criterion****************
TerminationCriterion sc2;
sc2.add_iteration_limit( 10 );
if (err) return 1;
lapl1.set_outer_termination_criterion(&sc2);
// adds 1 pass of pass1 to mesh_set1
// queue1.add_quality_assessor(&stop_qa,err);
if (err) return 1;
queue1.set_master_quality_improver(&lapl1, err);
if (err) return 1;
// queue1.add_quality_assessor(&stop_qa,err);
if (err) return 1;
PlanarDomain plane(Vector3D(0,0,1), Vector3D(0,0,0));
// launches optimization on mesh_set1
Timer t;
queue1.run_instructions(&mesh, &plane, err);
if (err) return 1;
double secs = t.since_birth();
std::cout << "Optimization completed in " << secs << " seconds" << std::endl;
if (output_file) {
mesh.write_vtk(output_file, err);
if (err) return 1;
std::cout << "Wrote file: " << output_file << std::endl;
}
return 0;
}
int main(int argc, char* argv[])
{
const char* input_file = DEFAULT_INPUT;
const char* output_file = NULL;
switch (argc) {
default:
help(argv[0]);
case 3:
if (!strcmp(argv[2],"-h"))
help(argv[0]);
output_file = argv[2];
case 2:
if (!strcmp(argv[1],"-h"))
help(argv[0]);
input_file = argv[1];
case 1:
;
}
/* Read a VTK Mesh file */
MsqPrintError err(cout);
Mesquite::MeshImpl mesh;
mesh.read_vtk( input_file, err);
if (err) {
std::cerr << input_file << ": file read failed" << endl;
return 1;
}
double min_ini, avg_ini, max_ini;
tet_dihedral_angle_ratios( mesh, min_ini, avg_ini, max_ini, err );
/* Run optimizer */
ViscousCFDTetShapeWrapper smoother(1e-2);
smoother.run_instructions( &mesh, err);
if (err) return 1;
double min_fin, avg_fin, max_fin;
tet_dihedral_angle_ratios( mesh, min_fin, avg_fin, max_fin, err );
cout << "\tMinimum \tAverage \tMaximum "<<endl
<< "Init\t"<<min_ini<<'\t'<<avg_ini<<'\t'<<max_ini<<endl
<< "Fini\t"<<min_fin<<'\t'<<avg_fin<<'\t'<<max_fin<<endl;
if (output_file) {
mesh.write_vtk( output_file, err );
if (err) {
std::cerr << output_file << ": file write failed" << endl;
return 1;
}
else {
std::cout << "Wrote file: " << output_file << endl;
}
}
if (min_ini > min_fin || avg_ini > avg_fin || max_ini > max_fin) {
std::cerr << "Dihedral handle ratio decreased" << endl;
return 1;
}
return 0;
}
int main(int argc, char* argv[])
{
Mesquite::MsqPrintError err(cout);
Mesquite::MeshImpl mesh;
//mesh->read_exodus("transformed_mesh.exo", err);
mesh.read_vtk(MESH_FILES_DIR "2D/vtk/quads/untangled/tfi_horse10x4-12.vtk", err);
if (err) return 1;
// Get all vertex coordinates from mesh
std::vector<Mesquite::Mesh::VertexHandle> handles;
mesh.get_all_vertices( handles, err );
if (err) return 1;
if (handles.empty()) {
std::cerr << "No verticies in mesh" << endl;
return 1;
}
std::vector<Mesquite::MsqVertex> coords( handles.size() );
mesh.vertices_get_coordinates( arrptr(handles), arrptr(coords), handles.size(), err );
if (err) return 1;
//create the matrix for affine transformation
double array_entries[9];
array_entries[0]=0; array_entries[1]=1; array_entries[2]=0;
array_entries[3]=1; array_entries[4]=0; array_entries[5]=0;
array_entries[6]=0; array_entries[7]=0; array_entries[8]=1;
//create the translation vector
Matrix3D my_mat(array_entries);
Vector3D my_vec(0, 0 , 10);
MeshTransform my_transform(my_mat, my_vec);
//mesh->write_exodus("original_mesh.exo", err);
MeshDomainAssoc mesh_and_domain = MeshDomainAssoc(&mesh, 0);
my_transform.loop_over_mesh(&mesh_and_domain, 0, err);
if (err) return 1;
//mesh->write_exodus("transformed_mesh.exo", err);
mesh.write_vtk("transformed_mesh.vtk", err);
if (err) return 1;
// Get transformed coordinates
std::vector<Mesquite::MsqVertex> coords2( handles.size() );
mesh.vertices_get_coordinates( arrptr(handles), arrptr(coords2), handles.size(), err );
if (err) return 1;
// Compare vertex coordinates
size_t invalid = 0;
std::vector<Mesquite::MsqVertex>::iterator iter, iter2;
iter = coords.begin();
iter2 = coords2.begin();
for ( ; iter != coords.end(); ++iter, ++iter2 )
{
Mesquite::Vector3D xform = my_mat * *iter + my_vec;
double d = (xform - *iter2).length();
if (d > EPSILON)
++invalid;
}
std::cerr << invalid << " vertices not within " << EPSILON
<< " of expected location" << std::endl;
return (invalid != 0);
}
int main(int argc, char* argv[])
{
const char* input_file = DEFAULT_INPUT;
const char* output_file = NULL;
switch (argc) {
default:
help(argv[0]);
case 3:
if (!strcmp(argv[2],"-h"))
help(argv[0]);
output_file = argv[2];
case 2:
if (!strcmp(argv[1],"-h"))
help(argv[0]);
input_file = argv[1];
case 1:
;
}
/* Read a VTK Mesh file */
MsqPrintError err(cout);
Mesquite::MeshImpl mesh;
mesh.read_vtk( input_file, err);
if (err) return 1;
// creates an intruction queue
InstructionQueue queue1;
// creates a mean ratio quality metric ...
ConditionNumberQualityMetric shape_metric;
EdgeLengthQualityMetric lapl_met;
lapl_met.set_averaging_method(QualityMetric::RMS);
// creates the laplacian smoother procedures
LaplacianSmoother lapl1;
QualityAssessor stop_qa=QualityAssessor(&shape_metric);
stop_qa.add_quality_assessment(&lapl_met);
//**************Set stopping criterion****************
TerminationCriterion sc2;
sc2.add_iteration_limit( 10 );
if (err) return 1;
lapl1.set_outer_termination_criterion(&sc2);
// adds 1 pass of pass1 to mesh_set1
queue1.add_quality_assessor(&stop_qa,err);
if (err) return 1;
queue1.set_master_quality_improver(&lapl1, err);
if (err) return 1;
queue1.add_quality_assessor(&stop_qa,err);
if (err) return 1;
// adds 1 passes of pass2 to mesh_set1
// mesh_set1.add_quality_pass(pass2);
//writeVtkMesh("original_mesh", mesh, err); MSQ_CHKERR(err);
PlanarDomain plane(Vector3D(0,0,1), Vector3D(0,0,5));
// launches optimization on mesh_set1
MeshDomainAssoc mesh_and_domain = MeshDomainAssoc(&mesh, &plane);
Timer t;
queue1.run_instructions(&mesh_and_domain, err);
if (err) return 1;
double secs = t.since_birth();
std::cout << "Optimization completed in " << secs << " seconds" << std::endl;
if (output_file) {
mesh.write_vtk(output_file, err);
if (err) return 1;
std::cout << "Wrote file: " << output_file << std::endl;
}
// check that smoother is working:
// the one free vertex must be at the origin
if (input_file == DEFAULT_INPUT) {
std::vector<Mesh::VertexHandle> vertices;
mesh.get_all_vertices( vertices, err );
if (err) return 1;
std::vector<bool> fixed_flags;
mesh.vertices_get_fixed_flag( arrptr(vertices), fixed_flags, vertices.size(), err );
if (err) return 1;
// find one free vertex
int idx = -1;
for (unsigned i = 0; i < vertices.size(); ++i) {
if (fixed_flags[i] == true)
continue;
if (idx != -1) {
std::cerr << "Multiple free vertices in mesh." << std::endl;
return 1;
}
idx = i;
}
if (idx == -1) {
std::cerr << "No free vertex in mesh!!!!!" << std::endl;
return 1;
}
Mesh::VertexHandle vertex = vertices[idx];
MsqVertex coords;
mesh.vertices_get_coordinates( &vertex, &coords, 1, err );
if (err) return 1;
// calculate distance from origin
double dist = sqrt( coords[0]*coords[0] + coords[1]*coords[1] );
if (dist > 1e-8) {
std::cerr << "Free vertex not at origin after Laplace smooth." << std::endl
<< "Expected location: (0,0)" << std::endl
<< "Actual location: (" << coords[0] << "," << coords[1] << ")" << std::endl;
return 2;
}
}
return 0;
}
