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feat(mesh): non conforming vacuum

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stroid can now generate non uniformly refined vacuum meshes. Note we still enforce that the stellar domain is fully conforming.
This commit is contained in:
Emily Boudreaux
2026-09-09 12:39:27 -04:00
parent 2347ae152f
commit a0421d5ddc
30 changed files with 1641 additions and 133 deletions
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27
tools/stroid.cpp
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@@ -7,6 +7,7 @@
#include <ranges>
#include <algorithm>
#include <print>
#include <limits>
// ReSharper disable once CppUnusedIncludeDirective
#include "mfem.hpp"
@@ -72,12 +73,14 @@ int main(int argc, char** argv) {
std::optional<std::string> mesh_file;
std::string output_filename = "stroid.mesh";
bool view_mesh = false;
bool original_elements = false;
bool no_save = false;
std::string glvis_host = "localhost";
int glvis_port = 19916;
generate->add_option("-c,--config", config_filename, "Path to configuration file")->check(CLI::ExistingFile);
generate->add_flag("-v,--view", view_mesh, "View the generated mesh using GLVis");
generate->add_flag("--original-elements", original_elements, "Display original cells; curved hanging faces may show GLVis tessellation gaps");
generate->add_flag("-n,--no-save", no_save, "Do not save the generated mesh to a file");
generate->add_option("--glvis-host", glvis_host, "GLVis server host")->capture_default_str();
generate->add_option("--glvis-port", glvis_port, "GLVis server port")->capture_default_str();
@@ -85,6 +88,7 @@ int main(int argc, char** argv) {
view->add_option("--host", glvis_host, "GLVis server host")->capture_default_str();
view->add_option("--port", glvis_port, "GLVis server port")->capture_default_str();
view->add_flag("--original-elements", original_elements, "Display original cells; curved hanging faces may show GLVis tessellation gaps");
view->add_option("-f,--file", mesh_file, "Path to .mesh file")->check(CLI::ExistingFile);
auto to_lower = [](std::string s) {
@@ -167,7 +171,8 @@ int main(int argc, char** argv) {
"Mesh Viewer - Colored by Element ID",
selected_mode,
glvis_host,
glvis_port);
glvis_port,
!original_elements);
exit(0);
}
@@ -178,11 +183,8 @@ int main(int argc, char** argv) {
}
const std::unique_ptr<mfem::Mesh> mesh = stroid::topology::BuildSkeleton(cfg);
stroid::topology::Finalize(*mesh, cfg);
stroid::topology::PromoteToHighOrder(*mesh, cfg);
stroid::topology::ProjectMesh(*mesh, cfg);
stroid::topology::OptimizeMesh(*mesh, cfg);
auto generated = stroid::GenerateMesh(cfg);
mfem::Mesh* mesh = generated.mesh.get();
if (!no_save) {
const std::string& final_path = output_filename;
@@ -193,6 +195,7 @@ int main(int argc, char** argv) {
std::cerr << "WARNING! Saving to MFEM format without the standard '.mesh' extension. File will be called " << final_path << std::endl;
}
std::ofstream ofs(final_path);
ofs.precision(std::numeric_limits<double>::max_digits10);
mesh->Print(ofs);
break;
}
@@ -201,12 +204,19 @@ int main(int argc, char** argv) {
std::cerr << "WARNING! Saving to VTU format without the standard '.vtu' extension. File will be called " << final_path << std::endl;
}
std::ofstream ofs(final_path);
ofs.precision(std::numeric_limits<double>::max_digits10);
// MFEM's stream overload writes an open Piece, allowing callers
// to append fields. Supply the enclosing document for a mesh export.
ofs << "<VTKFile type=\"UnstructuredGrid\" version=\"0.1\"";
if (out_cfg.vtu.compression_level != 0) ofs << " compressor=\"vtkZLibDataCompressor\"";
ofs << " byte_order=\"" << mfem::VTKByteOrder() << "\">\n<UnstructuredGrid>\n";
mesh->PrintVTU(ofs,
out_cfg.vtu.ref,
out_cfg.vtu.format,
out_cfg.vtu.high_order_output,
out_cfg.vtu.compression_level,
out_cfg.vtu.bdr_elements);
ofs << "</Piece>\n</UnstructuredGrid>\n</VTKFile>\n";
break;
}
case MESH_FORMATS::VTK: {
@@ -239,11 +249,12 @@ int main(int argc, char** argv) {
"Spheroidal Mesh - Colored by Element ID",
stroid::IO::VISUALIZATION_MODE::ELEMENT_ID,
glvis_host,
glvis_port);
glvis_port,
!original_elements);
}
} else if (!*info) {
std::println("Usage: {} [generate|info|view] --help", argv[0]);
}
return 0;
}
}