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glvis.cpp
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glvis.cpp
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// Copyright (c) 2010-2024, Lawrence Livermore National Security, LLC. Produced
// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
// LICENSE and NOTICE for details. LLNL-CODE-443271.
//
// This file is part of the GLVis visualization tool and library. For more
// information and source code availability see https://glvis.org.
//
// GLVis is free software; you can redistribute it and/or modify it under the
// terms of the BSD-3 license. We welcome feedback and contributions, see file
// CONTRIBUTING.md for details.
// GLVis - an OpenGL visualization server based on the MFEM library
#include <limits>
#include <iostream>
#include <fstream>
#include <string>
#include <cstdio>
#include <cstring>
#include <ctime>
// SDL may redefine main() as SDL_main() ostensibly to ease portability.
// (WinMain() instead of main() is used as the entry point in a non-console
// Windows program.)
//
// We must instead define SDL_MAIN_HANDLED so that SDL doesn't do this
// substitution, since we need a console to accept certain user input from
// stdin.
#ifdef _WIN32
#define SDL_MAIN_HANDLED
#endif
#include "mfem.hpp"
#include "lib/palettes.hpp"
#include "lib/visual.hpp"
#include "lib/stream_reader.hpp"
using namespace std;
using namespace mfem;
const char *string_none = "(none)";
const char *string_default = "(default)";
// Global variables for command line arguments
const char *mesh_file = string_none;
const char *sol_file = string_none;
const char *vec_sol_file = string_none;
const char *gfunc_file = string_none;
const char *qfunc_file = string_none;
const char *arg_keys = string_none;
int pad_digits = 6;
int gf_component = -1;
int qf_component = -1;
int window_x = 0; // not a command line option
int window_y = 0; // not a command line option
int window_w = 400;
int window_h = 350;
const char *window_title = string_default;
const char *c_plot_caption = string_none;
thread_local string plot_caption;
thread_local string extra_caption;
bool secure = socketstream::secure_default;
// Global variables
enum InputOptions
{
INPUT_SERVER_MODE = 1,
INPUT_MESH = 2,
INPUT_SCALAR_SOL = 4,
INPUT_VECTOR_SOL = 8,
//...
INPUT_PARALLEL = 256,
};
int input = INPUT_SERVER_MODE;
thread_local StreamState stream_state;
thread_local VisualizationSceneScalarData *vs = NULL;
extern thread_local GLVisCommand* glvis_command;
thread_local communication_thread *comm_thread = NULL;
thread_local GeometryRefiner GLVisGeometryRefiner;
const char *window_titles[] = { "GLVis [scalar data]",
"GLVis [vector data]",
"GLVis [mesh]"
};
istream *script = NULL;
int scr_running = 0;
int scr_level = 0;
Vector *init_nodes = NULL;
double scr_min_val, scr_max_val;
extern char **environ;
void PrintSampleUsage(ostream &out);
// read the mesh and the solution from a file
void ReadSerial(StreamState& state);
// choose grid function component and set the input flag
void SetGridFunction(StreamState& state);
// choose quadrature function component and set the input flag
void SetQuadFunction(StreamState& state);
// read the mesh and the solution from multiple files
void ReadParallel(int np, StreamState& state);
int ReadParMeshAndGridFunction(int np, const char *mesh_prefix,
const char *sol_prefix, StreamState& state);
int ReadParMeshAndQuadFunction(int np, const char *mesh_prefix,
const char *sol_prefix, StreamState& state);
// switch representation of the quadrature function
void SwitchQuadSolution();
// Visualize the data in the global variables mesh, sol/grid_f, etc
bool GLVisInitVis(StreamState::FieldType field_type,
StreamCollection input_streams)
{
if (field_type <= StreamState::FieldType::MIN
|| field_type >= StreamState::FieldType::MAX)
{
return false;
}
const char *win_title = (window_title == string_default) ?
window_titles[(int)field_type] : window_title;
if (InitVisualization(win_title, window_x, window_y, window_w, window_h))
{
cerr << "Initializing the visualization failed." << endl;
return false;
}
if (input_streams.size() > 0)
{
GetAppWindow()->setOnKeyDown(SDLK_SPACE, ThreadsPauseFunc);
glvis_command = new GLVisCommand(&vs, stream_state, &stream_state.keep_attr);
comm_thread = new communication_thread(std::move(input_streams), glvis_command);
}
if (stream_state.quad_f)
{
GetAppWindow()->setOnKeyDown('Q', SwitchQuadSolution);
}
double mesh_range = -1.0;
if (field_type == StreamState::FieldType::SCALAR
|| field_type == StreamState::FieldType::MESH)
{
if (stream_state.grid_f)
{
stream_state.grid_f->GetNodalValues(stream_state.sol);
}
if (stream_state.mesh->SpaceDimension() == 2)
{
VisualizationSceneSolution * vss;
if (stream_state.normals.Size() > 0)
{
vs = vss = new VisualizationSceneSolution(*stream_state.mesh, stream_state.sol,
stream_state.mesh_quad.get(), &stream_state.normals);
}
else
{
vs = vss = new VisualizationSceneSolution(*stream_state.mesh, stream_state.sol,
stream_state.mesh_quad.get());
}
if (stream_state.grid_f)
{
vss->SetGridFunction(*stream_state.grid_f);
}
if (field_type == StreamState::FieldType::MESH)
{
vs->OrthogonalProjection = 1;
vs->SetLight(false);
vs->Zoom(1.8);
// Use the 'bone' palette when visualizing a 2D mesh only (otherwise
// the 'jet-like' palette is used in 2D, see vssolution.cpp).
vs->palette.SetIndex(4);
}
}
else if (stream_state.mesh->SpaceDimension() == 3)
{
VisualizationSceneSolution3d * vss;
vs = vss = new VisualizationSceneSolution3d(*stream_state.mesh,
stream_state.sol, stream_state.mesh_quad.get());
if (stream_state.grid_f)
{
vss->SetGridFunction(stream_state.grid_f.get());
}
if (field_type == StreamState::FieldType::MESH)
{
if (stream_state.mesh->Dimension() == 3)
{
// Use the 'white' palette when visualizing a 3D volume mesh only
vss->palette.SetIndex(11);
vss->SetLightMatIdx(4);
}
else
{
// Use the 'bone' palette when visualizing a surface mesh only
vss->palette.SetIndex(4);
}
// Otherwise, the 'vivid' palette is used in 3D see vssolution3d.cpp
vss->ToggleDrawAxes();
vss->ToggleDrawMesh();
}
}
if (field_type == StreamState::FieldType::MESH)
{
if (stream_state.grid_f)
{
mesh_range = stream_state.grid_f->Max() + 1.0;
}
else
{
mesh_range = stream_state.sol.Max() + 1.0;
}
}
}
else if (field_type == StreamState::FieldType::VECTOR)
{
if (stream_state.mesh->SpaceDimension() == 2)
{
if (stream_state.grid_f)
{
vs = new VisualizationSceneVector(*stream_state.grid_f);
}
else
{
vs = new VisualizationSceneVector(*stream_state.mesh, stream_state.solu,
stream_state.solv, stream_state.mesh_quad.get());
}
}
else if (stream_state.mesh->SpaceDimension() == 3)
{
if (stream_state.grid_f)
{
stream_state.ProjectVectorFEGridFunction();
vs = new VisualizationSceneVector3d(*stream_state.grid_f,
stream_state.mesh_quad.get());
}
else
{
vs = new VisualizationSceneVector3d(*stream_state.mesh, stream_state.solu,
stream_state.solv, stream_state.solw,
stream_state.mesh_quad.get());
}
}
}
if (vs)
{
// increase the refinement factors if visualizing a GridFunction
if (stream_state.grid_f)
{
vs->AutoRefine();
vs->SetShading(VisualizationSceneScalarData::Shading::Noncomforming, true);
}
if (mesh_range > 0.0)
{
vs->SetValueRange(-mesh_range, mesh_range);
vs->SetAutoscale(0);
}
if (stream_state.mesh->SpaceDimension() == 2
&& field_type == StreamState::FieldType::MESH)
{
SetVisualizationScene(vs, 2, stream_state.keys.c_str());
}
else
{
SetVisualizationScene(vs, 3, stream_state.keys.c_str());
}
}
return true;
}
void GLVisStartVis()
{
RunVisualization(); // deletes vs
vs = NULL;
if (glvis_command)
{
glvis_command->Terminate();
delete comm_thread;
delete glvis_command;
glvis_command = NULL;
}
cout << "GLVis window closed." << endl;
}
int ScriptReadSolution(istream &scr, StreamState& state)
{
string mword,sword;
cout << "Script: solution: " << flush;
// read the mesh
scr >> ws >> mword; // mesh filename (can't contain spaces)
cout << "mesh: " << mword << "; " << flush;
named_ifgzstream imesh(mword.c_str());
if (!imesh)
{
cout << "Can not open mesh file: " << mword << endl;
return 1;
}
state.SetMesh(new Mesh(imesh, 1, 0, state.fix_elem_orient));
// read the solution (GridFunction)
scr >> ws >> sword;
if (sword == mword) // mesh and solution in the same file
{
cout << "solution: " << mword << endl;
state.SetGridFunction(new GridFunction(state.mesh.get(), imesh));
}
else
{
cout << "solution: " << sword << endl;
ifgzstream isol(sword.c_str());
if (!isol)
{
cout << "Can not open solution file: " << sword << endl;
return 2;
}
state.SetGridFunction(new GridFunction(state.mesh.get(), isol));
}
state.Extrude1DMeshAndSolution();
return 0;
}
int ScriptReadQuadrature(istream &scr, StreamState& state)
{
string mword,sword;
cout << "Script: quadrature: " << flush;
// read the mesh
scr >> ws >> mword; // mesh filename (can't contain spaces)
cout << "mesh: " << mword << "; " << flush;
named_ifgzstream imesh(mword.c_str());
if (!imesh)
{
cout << "Can not open mesh file: " << mword << endl;
return 1;
}
state.SetMesh(new Mesh(imesh, 1, 0, state.fix_elem_orient));
// read the quadrature (QuadratureFunction)
scr >> ws >> sword;
if (sword == mword) // mesh and quadrature in the same file
{
cout << "quadrature: " << mword << endl;
state.SetQuadFunction(new QuadratureFunction(state.mesh.get(), imesh));
}
else
{
cout << "quadrature: " << sword << endl;
ifgzstream isol(sword.c_str());
if (!isol)
{
cout << "Can not open quadrature file: " << sword << endl;
return 2;
}
state.SetQuadFunction(new QuadratureFunction(state.mesh.get(), isol));
}
state.SetQuadSolution();
state.Extrude1DMeshAndSolution();
return 0;
}
int ScriptReadParSolution(istream &scr, StreamState& state)
{
int np, scr_keep_attr, err_read;
string mesh_prefix, sol_prefix;
cout << "Script: psolution: " << flush;
// read number of processors
scr >> np;
cout << "# processors: " << np << "; " << flush;
// read the mesh prefix
scr >> ws >> mesh_prefix; // mesh prefix (can't contain spaces)
cout << "mesh prefix: " << mesh_prefix << "; " << flush;
scr >> ws >> scr_keep_attr;
if (scr_keep_attr)
{
cout << "(real attributes); " << flush;
}
else
{
cout << "(processor attributes); " << flush;
}
// read the solution prefix
scr >> ws >> sol_prefix;
cout << "solution prefix: " << sol_prefix << endl;
err_read = ReadParMeshAndGridFunction(np, mesh_prefix.c_str(),
sol_prefix.c_str(), state);
if (!err_read)
{
state.Extrude1DMeshAndSolution();
}
return err_read;
}
int ScriptReadParQuadrature(istream &scr, StreamState& state)
{
int np, scr_keep_attr, err_read;
string mesh_prefix, quad_prefix;
cout << "Script: pquadrature: " << flush;
// read number of processors
scr >> np;
cout << "# processors: " << np << "; " << flush;
// read the mesh prefix
scr >> ws >> mesh_prefix; // mesh prefix (can't contain spaces)
cout << "mesh prefix: " << mesh_prefix << "; " << flush;
scr >> ws >> scr_keep_attr;
if (scr_keep_attr)
{
cout << "(real attributes); " << flush;
}
else
{
cout << "(processor attributes); " << flush;
}
// read the quadrature prefix
scr >> ws >> quad_prefix;
cout << "quadrature prefix: " << quad_prefix << endl;
err_read = ReadParMeshAndQuadFunction(np, mesh_prefix.c_str(),
quad_prefix.c_str(), state);
if (!err_read)
{
state.SetQuadSolution();
state.Extrude1DMeshAndSolution();
}
return err_read;
}
int ScriptReadDisplMesh(istream &scr, StreamState& state)
{
StreamState meshstate;
string word;
cout << "Script: mesh: " << flush;
scr >> ws >> word;
{
named_ifgzstream imesh(word.c_str());
if (!imesh)
{
cout << "Can not open mesh file: " << word << endl;
return 1;
}
cout << word << endl;
meshstate.SetMesh(new Mesh(imesh, 1, 0, state.fix_elem_orient));
}
meshstate.Extrude1DMeshAndSolution();
Mesh* const m = meshstate.mesh.get();
if (init_nodes == NULL)
{
init_nodes = new Vector;
meshstate.mesh->GetNodes(*init_nodes);
state.SetMesh(NULL);
state.SetGridFunction(NULL);
}
else
{
FiniteElementCollection *vfec = NULL;
FiniteElementSpace *vfes;
vfes = (FiniteElementSpace *)m->GetNodalFESpace();
if (vfes == NULL)
{
vfec = new LinearFECollection;
vfes = new FiniteElementSpace(m, vfec, m->SpaceDimension());
}
meshstate.SetGridFunction(new GridFunction(vfes));
GridFunction * const g = meshstate.grid_f.get();
if (vfec)
{
g->MakeOwner(vfec);
}
m->GetNodes(*g);
if (g->Size() == init_nodes->Size())
{
subtract(*init_nodes, *g, *g);
}
else
{
cout << "Script: incompatible meshes!" << endl;
*g = 0.0;
}
state = std::move(meshstate);
}
return 0;
}
void ExecuteScriptCommand()
{
if (!script)
{
cout << "No script stream defined! (Bug?)" << endl;
return;
}
istream &scr = *script;
string word;
int done_one_command = 0;
while (!done_one_command)
{
scr >> ws;
if (!scr.good())
{
cout << "End of script." << endl;
scr_level = 0;
return;
}
if (scr.peek() == '#')
{
getline(scr, word);
continue;
}
scr >> word;
if (word == "{")
{
scr_level++;
}
else if (word == "}")
{
scr_level--;
if (scr_level < 0)
{
scr_level = 0;
}
}
else if (word == "solution" || word == "mesh" || word == "psolution"
|| word == "quadrature" || word == "pquadrature")
{
StreamState new_state;
if (word == "solution")
{
if (ScriptReadSolution(scr, new_state))
{
done_one_command = 1;
continue;
}
}
else if (word == "quadrature")
{
if (ScriptReadQuadrature(scr, new_state))
{
done_one_command = 1;
continue;
}
}
else if (word == "mesh")
{
if (ScriptReadDisplMesh(scr, new_state))
{
done_one_command = 1;
continue;
}
if (new_state.mesh == NULL)
{
cout << "Script: unexpected 'mesh' command!" << endl;
done_one_command = 1;
continue;
}
}
else if (word == "psolution")
{
if (ScriptReadParSolution(scr, new_state))
{
done_one_command = 1;
continue;
}
}
else if (word == "pquadrature")
{
if (ScriptReadParQuadrature(scr, new_state))
{
done_one_command = 1;
continue;
}
}
if (stream_state.SetNewMeshAndSolution(std::move(new_state), vs))
{
MyExpose();
}
else
{
cout << "Different type of mesh / solution." << endl;
}
}
else if (word == "screenshot")
{
scr >> ws >> word;
cout << "Script: screenshot: " << flush;
if (Screenshot(word.c_str(), true))
{
cout << "Screenshot(" << word << ") failed." << endl;
done_one_command = 1;
continue;
}
cout << "-> " << word << endl;
if (scr_min_val > vs->GetMinV())
{
scr_min_val = vs->GetMinV();
}
if (scr_max_val < vs->GetMaxV())
{
scr_max_val = vs->GetMaxV();
}
}
else if (word == "viewcenter")
{
scr >> vs->ViewCenterX >> vs->ViewCenterY;
cout << "Script: viewcenter: "
<< vs->ViewCenterX << ' ' << vs->ViewCenterY << endl;
MyExpose();
}
else if (word == "perspective")
{
scr >> ws >> word;
cout << "Script: perspective: " << word;
if (word == "off")
{
vs->OrthogonalProjection = 1;
}
else if (word == "on")
{
vs->OrthogonalProjection = 0;
}
else
{
cout << '?';
}
cout << endl;
MyExpose();
}
else if (word == "light")
{
scr >> ws >> word;
cout << "Script: light: " << word;
if (word == "off")
{
vs->SetLight(false);
}
else if (word == "on")
{
vs->SetLight(true);
}
else
{
cout << '?';
}
cout << endl;
MyExpose();
}
else if (word == "view")
{
double theta, phi;
scr >> theta >> phi;
cout << "Script: view: " << theta << ' ' << phi << endl;
vs->SetView(theta, phi);
MyExpose();
}
else if (word == "zoom")
{
double factor;
scr >> factor;
cout << "Script: zoom: " << factor << endl;
vs->Zoom(factor);
MyExpose();
}
else if (word == "shading")
{
scr >> ws >> word;
cout << "Script: shading: " << flush;
VisualizationSceneScalarData::Shading s =
VisualizationSceneScalarData::Shading::Invalid;
if (word == "flat")
{
s = VisualizationSceneScalarData::Shading::Flat;
}
else if (word == "smooth")
{
s = VisualizationSceneScalarData::Shading::Smooth;
}
else if (word == "cool")
{
s = VisualizationSceneScalarData::Shading::Noncomforming;
}
if (s != VisualizationSceneScalarData::Shading::Invalid)
{
vs->SetShading(s, false);
cout << word << endl;
MyExpose();
}
else
{
cout << word << " ?" << endl;
}
}
else if (word == "subdivisions")
{
int t, b;
scr >> t >> b;
cout << "Script: subdivisions: " << flush;
vs->SetRefineFactors(t, b);
cout << t << ' ' << b << endl;
MyExpose();
}
else if (word == "valuerange")
{
double min, max;
scr >> min >> max;
cout << "Script: valuerange: " << flush;
vs->SetValueRange(min, max);
cout << min << ' ' << max << endl;
MyExpose();
}
else if (word == "autoscale")
{
scr >> ws >> word;
cout << "Script: autoscale: " << word;
if (word == "off")
{
vs->SetAutoscale(0);
}
else if (word == "on")
{
vs->SetAutoscale(1);
}
else if (word == "value")
{
vs->SetAutoscale(2);
}
else if (word == "mesh")
{
vs->SetAutoscale(3);
}
else
{
cout << '?';
}
cout << endl;
}
else if (word == "levellines")
{
double min, max;
int num;
scr >> min >> max >> num;
cout << "Script: levellines: " << flush;
vs->SetLevelLines(min, max, num);
vs->UpdateLevelLines();
cout << min << ' ' << max << ' ' << num << endl;
MyExpose();
}
else if (word == "axis_numberformat")
{
char delim;
string axis_formatting;
scr >> ws >> delim;
getline(scr, axis_formatting, delim);
cout << "Script: axis_numberformat: " << flush;
vs->SetAxisNumberFormat(axis_formatting);
cout << axis_formatting << endl;
MyExpose();
}
else if (word == "colorbar_numberformat")
{
char delim;
string colorbar_formatting;
scr >> ws >> delim;
getline(scr, colorbar_formatting, delim);
cout << "Script: colorbar_numberformat: " << flush;
vs->SetColorbarNumberFormat(colorbar_formatting);
cout << colorbar_formatting << endl;
MyExpose();
}
else if (word == "window")
{
scr >> window_x >> window_y >> window_w >> window_h;
cout << "Script: window: " << window_x << ' ' << window_y
<< ' ' << window_w << ' ' << window_h << endl;
MoveResizeWindow(window_x, window_y, window_w, window_h);
MyExpose();
}
else if (word == "keys")
{
scr >> stream_state.keys;
cout << "Script: keys: '" << stream_state.keys << "'" << endl;
// SendKeySequence(keys.c_str());
CallKeySequence(stream_state.keys.c_str());
MyExpose();
}
else if (word == "palette")
{
int pal;
scr >> pal;
cout << "Script: palette: " << pal << endl;
vs->palette.SetIndex(pal-1);
MyExpose();
}
else if (word == "palette_repeat")
{
int rpt_times;
scr >> rpt_times;
cout << "Script: palette_repeat: " << rpt_times << endl;
vs->palette.SetRepeatTimes(rpt_times);
vs->palette.Init();
MyExpose();
}
else if (word == "toggle_attributes")
{
Array<int> attr_list;
cout << "Script: toggle_attributes:";
for (scr >> ws; scr.peek() != ';'; scr >> ws)
{
attr_list.Append(0);
scr >> attr_list.Last();
if (attr_list.Size() <= 256)
{
cout << ' ' << attr_list.Last();
}
else if (attr_list.Size() == 257)
{
cout << " ... " << flush;
}
}
scr.get(); // read the end symbol: ';'
cout << endl;
vs->ToggleAttributes(attr_list);
MyExpose();
}
else if (word == "rotmat")
{
cout << "Script: rotmat:";
for (int i = 0; i < 16; i++)
{
scr >> vs->rotmat[i/4][i%4];
cout << ' ' << vs->rotmat[i/4][i%4];
}
cout << endl;
MyExpose();
}
else if (word == "camera")
{
double cam[9];
cout << "Script: camera:";
for (int i = 0; i < 9; i++)
{
scr >> cam[i];
cout << ' ' << cam[i];
}
cout << endl;
vs->cam.Set(cam);
MyExpose();
}
else if (word == "scale")
{
double scale;
cout << "Script: scale:";
scr >> scale;
cout << ' ' << scale;
cout << endl;
vs->Scale(scale);
MyExpose();
}
else if (word == "translate")
{
double x, y, z;
cout << "Script: translate:";
scr >> x >> y >> z;
cout << ' ' << x << ' ' << y << ' ' << z;
cout << endl;
vs->Translate(x, y, z);
MyExpose();
}
else if (word == "plot_caption")
{
char delim;
scr >> ws >> delim;
getline(scr, plot_caption, delim);
vs->PrepareCaption(); // turn on or off the caption
MyExpose();
}
else
{
cout << "Unknown command in script: " << word << endl;
}
done_one_command = 1;
}
}
void ScriptControl();
void ScriptIdleFunc()
{
ExecuteScriptCommand();
if (scr_level == 0)
{
ScriptControl();
}
}
void ScriptControl()
{
if (scr_running)
{
scr_running = 0;
RemoveIdleFunc(ScriptIdleFunc);
}
else
{
scr_running = 1;
AddIdleFunc(ScriptIdleFunc);
}
}
void PlayScript(istream &scr)
{
string word;
scr_min_val = numeric_limits<double>::infinity();
scr_max_val = -scr_min_val;
// read initializing commands
while (1)
{
scr >> ws;
if (!scr.good())
{
cout << "Error in script" << endl;
return;
}
if (scr.peek() == '#')
{
getline(scr, word);
continue;
}
scr >> word;
if (word == "window")
{
scr >> window_x >> window_y >> window_w >> window_h;
}
else if (word == "solution")
{
if (ScriptReadSolution(scr, stream_state))
{
return;
}
// start the visualization
break;
}
else if (word == "quadrature")
{
if (ScriptReadQuadrature(scr, stream_state))
{
return;
}
// start the visualization
break;
}
else if (word == "psolution")
{
if (ScriptReadParSolution(scr, stream_state))
{
return;
}
// start the visualization
break;
}
else if (word == "pquadrature")
{
if (ScriptReadParQuadrature(scr, stream_state))
{
return;
}
// start the visualization
break;
}