stop_on_close_encounter_param(const config &cfg)
{
if(!cfg.count("close_approach"))
dmin = 0.;
else
dmin = atof(cfg.at("close_approach").c_str());
}
void write_stable_systems(defaultEnsemble &ens, defaultEnsemble &ens_init)
{
// find the stable ones and output the initial conditions for the stable
// ones in keplerian coordinates
// std::cerr << "# Finding stable system ids\n";
std::vector<unsigned int> stable_system_indices, unstable_system_indices;
for(int i = 0; i < ens.nsys() ; i++ )
{
if(ens[i].is_disabled())
unstable_system_indices.push_back(i);
else
stable_system_indices.push_back(i);
}
// std::cerr << "# Writing stable system ids\n";
if(cfg.count("stable_init_output"))
{
ofstream stable_init_output( cfg.optional("stable_init_output", string("stable_init_output.txt")).c_str() );
print_selected_systems(ens_init,stable_system_indices, stable_init_output);
}
if(cfg.count("stable_final_output"))
{
ofstream stable_final_output( cfg.optional("stable_final_output", string("stable_final_output.txt")).c_str() );
print_selected_systems(ens,stable_system_indices, stable_final_output);
}
if(cfg.count("unstable_init_output"))
{
ofstream unstable_init_output( cfg.optional("unstable_init_output", string("unstable_init_output.txt")).c_str() );
print_selected_systems(ens_init,unstable_system_indices, unstable_init_output);
}
if(cfg.count("unstable_final_output"))
{
ofstream unstable_final_output( cfg.optional("unstable_final_output", string("unstable_final_output.txt")).c_str() );
print_selected_systems(ens,unstable_system_indices, unstable_final_output);
}
}
void disable_unstable_systems(defaultEnsemble& ens, const std::vector<std::vector<double> >& semimajor_axes_init, const double deltaa_threshold )
{
for(int sys_idx = 0; sys_idx < ens.nsys() ; sys_idx++)
{
if(ens[sys_idx].is_disabled() ) continue;
bool disable = false;
int sys_id = ens[sys_idx].id();
double star_mass = ens.mass(sys_idx,0);
double mass_effective = star_mass;
double bx, by, bz, bvx, bvy, bvz;
ens.get_barycenter(sys_idx,bx,by,bz,bvx,bvy,bvz,0);
for(unsigned int bod=1;bod<ens.nbod();++bod) // Skip star since calculating orbits
{
// std::cout << "body= " << bod << ": ";
// std::cout << "pos= (" << ens.x(sys_idx, bod) << ", " << ens.y(sys_idx, bod) << ", " << ens.z(sys_idx, bod) << ") vel= (" << ens.vx(sys_idx, bod) << ", " << ens.vy(sys_idx, bod) << ", " << ens.vz(sys_idx, bod) << ").\n";
double mass = ens.mass(sys_idx,bod);
mass_effective += mass;
ens.get_barycenter(sys_idx,bx,by,bz,bvx,bvy,bvz,bod-1);
double x = ens.x(sys_idx,bod)-bx;
double y = ens.y(sys_idx,bod)-by;
double z = ens.z(sys_idx,bod)-bz;
double vx = ens.vx(sys_idx,bod)-bvx;
double vy = ens.vy(sys_idx,bod)-bvy;
double vz = ens.vz(sys_idx,bod)-bvz;
double a, e, i, O, w, M;
calc_keplerian_for_cartesian(a,e,i,O,w,M, x,y,z,vx,vy,vz, mass_effective);
i *= 180/M_PI;
O *= 180/M_PI;
w *= 180/M_PI;
M *= 180/M_PI;
if(!((e>=0.)&&(e<1.0))) { disable = true; }
if(!((a>0.)&&(a<10.0))) { disable = true; }
assert(sys_id>=0);
assert(sys_id<semimajor_axes_init.size());
assert(bod-1>=0);
assert(bod-1<semimajor_axes_init[sys_id].size());
double da = a - semimajor_axes_init[sys_id][bod-1];
if(fabs(da) >= deltaa_threshold * semimajor_axes_init[sys_id][bod-1])
{ disable = true; }
if(disable)
{
if(cfg.count("verbose"))
std::cout << "# Disabling idx=" << sys_idx << " id=" << sys_id << " b=" << bod << " a= " << a << " e= " << e << " i= " << i << " Omega= " << O << " omega= " << w << " M= " << M << "\n";
break;
}
}
if(disable) ens[sys_idx].set_disabled();
}
}
void benchmark(const parameter_range& pr){
// Go through the loop
std::cout << "Parameter, Value, Time, Energy Conservation Factor (delta E/E)"
", Position Difference, Velocity Difference, Time difference "
", Integration (ms), Integrator initialize (ms) \n";
string param = pr.parameter;
vector<string> values = pr.values;
if(!(param == "input" || param == "nsys" || param == "nbod" || cfg.count("reinitialize")))
load_generate_ensemble();
outputConfigSummary(std::cout,cfg);
if(verify_mode)
reference_integration();
if(pr.interpolate) {
// Numeric range
double from = atof(values[0].c_str()), to = atof(values[1].c_str());
double increment = (values.size() == 3) ? atof(values[2].c_str()) : 1;
for(double i = from; i <= to ; i+= increment ){
std::ostringstream stream;
stream << i;
string value = stream.str();
cfg[param] = value;
DEBUG_OUTPUT(1, "=========================================");
benchmark_item(param,value);
}
}else {
// Iterate over values
for(vector<string>::const_iterator i = values.begin(); i != values.end(); i++){
string value = *i;
if(param == "config")
cfg = config::load(value,base_cfg);
else
cfg[param] = *i;
DEBUG_OUTPUT(1, "=========================================");
benchmark_item(param,value);
}
}
}
void benchmark_item(const string& param, const string& value) {
//outputConfigSummary(std::cout,cfg);
if(!validate_configuration(cfg) ) ERROR( "Invalid configuration" );
if(param == "input" || param == "nsys" || param == "nbod" || cfg.count("reinitialize"))
load_generate_ensemble();
DEBUG_OUTPUT(2, "Make a copy of ensemble for energy conservation test" );
current_ens = initial_ens.clone();
double init_time = watch_time( prepare_integrator );
double integration_time = watch_time( generic_integrate );
double max_deltaE = find_max_energy_conservation_error(current_ens, initial_ens );
// Compare with reneference ensemble for integrator verification
double pos_diff = 0, vel_diff = 0, time_diff = 0;
bool comparison = compare_ensembles( current_ens, reference_ens , pos_diff, vel_diff, time_diff );
/// CSV output for use in spreadsheet software
std::cout << param << ", "
<< value << ", "
<< current_ens.time_ranges() << ", "
<< max_deltaE << ", "
<< pos_diff << ", "
<< vel_diff << ", "
<< time_diff << ", "
<< integration_time << ", "
<< init_time
<< std::endl;
if( !comparison || pos_diff > pos_threshold || vel_diff > vel_threshold || time_diff > time_threshold ){
fail_verify();
}
}
/**
* @brief Analyze the PE with each selected plugin.
*
* @param io::OutputFormatter& formatter The object which will recieve the output.
* @param const std::vector<std::string>& selected The names of the selected plugins.
* @param const config& conf The configuration of the plugins.
* @param const mana::PE& pe The PE to analyze.
*/
void handle_plugins_option(io::OutputFormatter& formatter,
const std::vector<std::string>& selected,
const config& conf,
const mana::PE& pe)
{
bool all_plugins = std::find(selected.begin(), selected.end(), "all") != selected.end();
std::vector<plugin::pIPlugin> plugins = plugin::PluginManager::get_instance().get_plugins();
io::pNode plugins_node(new io::OutputTreeNode("Plugins", io::OutputTreeNode::LIST));
for (std::vector<plugin::pIPlugin>::iterator it = plugins.begin() ; it != plugins.end() ; ++it)
{
// Verify that the plugin was selected
if (!all_plugins && std::find(selected.begin(), selected.end(), *(*it)->get_id()) == selected.end()) {
continue;
}
// Forward relevant configuration elements to the plugin.
if (conf.count(*(*it)->get_id())) {
(*it)->set_config(conf.at(*(*it)->get_id()));
}
plugin::pResult res = (*it)->analyze(pe);
if (!res)
{
PRINT_WARNING << "Plugin " << *(*it)->get_id() << " returned a NULL result!" << std::endl;
continue;
}
io::pNode output = res->get_output();
if (!output || !res->get_information()->size()) {
continue;
}
plugins_node->append(output);
}
formatter.add_data(plugins_node, *pe.get_path());
}
int main(int argc, char* argv[] )
{
// We keep it simple, later on one can use boost::program_options to
// have more options
// but now we only use two configuration files. It is because the
// initial conditions configuration file can get really big and
// it has very little to do with other configuration options.
if(argc < 3) cout << "Usage: montecarlo_ecclimit <integration configuration> <initial conditions configuration>" << endl;
// First one is the configuration for integration
string integ_configfile = argv[1];
// the second one is the configuration for generating
// initial conditions it is used by \ref generate_ensemble_with_randomized_initial_conditions
string initc_configfile = argv[2];
cfg = config::load(integ_configfile);
// 1.read keplerian coordinates from a file
// 2.generate guesses based on the keplerian coordinates
// 3.convert keplerian coordinates to an ensemble
// The following line that is taken from swarm_tutorial_montecarlo.cpp
// does the first three steps. Its pretty amazing.
defaultEnsemble ens ;
if( cfg.count("input") )
{ ens = snapshot::load(cfg["input"]); }
else
{ ens = generate_ensemble_with_randomized_initial_conditions( config::load(initc_configfile) ); }
// save the ensemble as a snapshot
if(cfg.count("initial_snapshot"))
{ snapshot::save( ens, cfg["initial_snapshot"] ); }
defaultEnsemble ens_init = ens.clone() ;
std::vector<std::vector<double> > semimajor_axes_init = calc_semimajor_axes(ens);
// We want to find the ones that are really stable, so we integrate for
// a really long time and over time we get rid of unstable ones.
double destination_time = cfg.optional("destination_time", 1.0E6);
swarm::init(cfg);
Pintegrator integ = integrator::create(cfg);
integ->set_ensemble(ens);
integ->set_destination_time ( destination_time );
// We can set the following two items if we really need
// longer integrations before we stop for checking the
// ensemble and saving snapshots.
// one kernel call to allow for prompt CPU pruning of unstable systems
int max_kernel_calls_per_integrate = cfg.optional("max_kernel_calls_per_integrate",1);
// 10^2 inner orbits at 200 time steps per inner orbit
int max_itterations_per_kernel_call = cfg.optional("max_itterations_per_kernel_call",20000);
integ->set_max_attempts( max_kernel_calls_per_integrate );
integ->set_max_iterations ( max_itterations_per_kernel_call );
SYNC;
// integrate ensemble
// - drop the unstable ones as you go
// - redistribute the systems for better efficiency
// - save the results periodically
// This can be an infitie loop. but we can always get out of this
// the best way to do it is to use Ctrl-C. Further wecan
// define Ctrl-C signal handler to get out
// of this loop in a safe way. But we really want this loop
// to run for a long time
reactivate_systems(ens);
// EBF Experiment trying to expose host log.
swarm::log::ensemble(*(swarm::log::manager::default_log()->get_hostlog()),ens);
integ->flush_log();
catch_ctrl_c();
while( number_of_active_systems(ens) > 0 && integration_loop_not_aborted_yet ) {
// 1. Integrate, we could use core_integrate but the general integrate
// saves all the headache. We should only use core_integrate if we are
// going to do everything on GPU, but since we are saving a snapshot in
// the middle, there's no point. It also has a nice for loop and can
// to several kernel calls.
integ->integrate();
// 2. CPU-based tests to identify systems that can be terminated
int active_ones = number_of_active_systems(ens);
const double deltaa_frac_threshold = cfg.optional("deltaa_frac_threshold", 0.5);
disable_unstable_systems( ens, semimajor_axes_init, deltaa_frac_threshold );
// double med_deltaE = find_median_energy_conservation_error(ens, ens_init );
double max_deltaE = find_max_energy_conservation_error(ens, ens_init );
std::cerr << "# Time: " << ens.time_ranges().min << " " << ens.time_ranges().median << " " << ens.time_ranges().max << " Systems: " << ens.nsys() << ", " << active_ones << ", ";
active_ones = number_of_active_systems(ens);
std::cerr << active_ones << " max|dE/E|= " << max_deltaE << "\n";
// EBF Experiment trying to expose host log.
swarm::log::ensemble_enabled(*(swarm::log::manager::default_log()->get_hostlog()),ens);
integ->flush_log();
if (!cfg.count("input") && cfg.count("replace_unstable") )
{
int nsys_to_replace = number_of_disabled_systems( ens ) ;
if( nsys_to_replace >0 )
{
replace_disabled_systems( ens );
integ->set_ensemble( ens );
}
}
else
{
// 3. Now we need to get rid of the inactive ones. There
// should be some criteria, whatever it is we are
// going to put it in a function and call it \ref needs_shrinking
if ( needs_shrinking( ens ) )
{
// Now this function will take care of trimming for us
// We need to create a new ensemble of a smaller size
// thats why we need to call set_ensemble again. because
// the GPU ensemble should get recreated for us.
// we need better memory management to safely allow
// the following statement. Right now we don't have a
// very good automatic memory management
// std::cerr << "# Removing disabled systems\n";
ens = trim_disabled_systems( ens );
// std::cerr << "# Testing if ens has any systems left.\n";
if(ens.nsys()>0)
{
// std::cerr << "# Setting ensemble for integrator\n";
// WARNING: This appears to be the cause of SEGFAULT
// if the ensemble is empty.
integ->set_ensemble( ens );
}
// std::cerr << "# Time: " << ens.time_ranges() << " Total Systems: " << ens.nsys() << " Active Systems: " << active_ones << ", ";
// active_ones = number_of_active_systems(ens);
// std::cerr << active_ones << "\n";
}
}
// std::cerr << std::endl;
// 4. We need to save a snapshot in case system crashes or someone
// gets tired of it and hits Ctrl-C
// std::cerr << "# Saving snapshot\n";
save_snapshot( ens );
write_stable_systems(ens,ens_init);
}
// Now we are at the end of the system, before we examine
// the output we need to
// std::cerr << "# Removing disabled systems\n";
if(number_of_active_systems(ens)>0)
{
ens = trim_disabled_systems( ens );
// std::cerr << "# Saving snapshot\n";
save_snapshot( ens );
}
write_stable_systems(ens,ens_init);
}
/// Save a periodical snapshot if one is defined in the config file
/// Snapshot is usually saved as binary file, because it happens very
/// frequently and text files take very long time to generate.
void save_snapshot( defaultEnsemble& ens )
{
if(cfg.count("snapshot")) snapshot::save( ens, cfg["snapshot"] );
}
void generate_initial_conditions_for_system(const config& cfg, defaultEnsemble &ens, const int sysidx, const int sysid)
{
double time_init = cfg.optional("time_init", 0.0);
const bool use_jacobi = cfg.optional("use_jacobi", 0);
bool keplerian_ephemeris = cfg.optional("use_keplerian", 1);
bool transit_ephemeris = cfg.optional("use_transit", 0);
if(transit_ephemeris) keplerian_ephemeris = 0;
assert(!(keplerian_ephemeris && transit_ephemeris)); // find a better way
ens[sysidx].id() = sysid;
ens[sysidx].time() = time_init;
ens[sysidx].set_active();
if(sysid>maxsysid) maxsysid = sysid;
// set sun to unit mass and at origin
double mass_star = draw_value_from_config(cfg,"mass_star",0.00003,100.);
double x=0, y=0, z=0, vx=0, vy=0, vz=0;
ens.set_body(sysidx, 0, mass_star, x, y, z, vx, vy, vz);
// If omitted or value of zero, then default to cycling through body id to make eccentric
int ecc_body = cfg.optional("ecc_body", 0);
if(ecc_body==0)
{ ecc_body = 1+(sysid*(ens.nbod()-1))/ens.nsys(); }
double mass_enclosed = mass_star;
for(unsigned int bod=1;bod<ens.nbod();++bod)
{
double mass_planet = draw_value_from_config(cfg,"mass",bod,0.,mass_star);
mass_enclosed += mass_planet;
double a, e, i, O, w, M;
if(transit_ephemeris)
{
double period = draw_value_from_config(cfg,"period",bod,0.2,365250.);
double epoch = draw_value_from_config(cfg,"epoch",bod,0.2,365250.);
a = pow((period/365.25)*(period/365.25)*mass_enclosed,1.0/3.0);
if(bod==ecc_body)
e = draw_value_from_config(cfg,"ecc",bod,0.,1.);
else
e = 0.;
i = draw_value_from_config(cfg,"inc",bod,-180.,180.);
O = draw_value_from_config(cfg,"node",bod,-720.,720.);
w = draw_value_from_config(cfg,"omega",bod,-720.,720.);
i *= M_PI/180.;
O *= M_PI/180.;
w *= M_PI/180.;
double T = (0.5*M_PI-w)+2.0*M_PI*((epoch/period)-floor(epoch/period));
double E = atan2(sqrt(1.-e)*(1.+e)*sin(T),e+cos(T));
M = E-e*sin(E);
}
else if (keplerian_ephemeris)
{
a = draw_value_from_config(cfg,"a",bod,0.001,10000.);
if(bod==ecc_body)
e = draw_value_from_config(cfg,"ecc",bod,0.,1.);
else
e = 0.;
i = draw_value_from_config(cfg,"inc",bod,-180.,180.);
O = draw_value_from_config(cfg,"node",bod,-720.,720.);
w = draw_value_from_config(cfg,"omega",bod,-720.,720.);
M = draw_value_from_config(cfg,"meananom",bod,-720.,720.);
i *= M_PI/180.;
O *= M_PI/180.;
w *= M_PI/180.;
M *= M_PI/180.;
}
double mass = use_jacobi ? mass_enclosed : mass_star+mass_planet;
if(cfg.count("verbose")&&(sysid<10))
std::cout << "# Drawing sysid= " << sysid << " bod= " << bod << ' ' << mass_planet << " " << a << ' ' << e << ' ' << i*180./M_PI << ' ' << O*180./M_PI << ' ' << w*180./M_PI << ' ' << M*180./M_PI << '\n';
calc_cartesian_for_ellipse(x,y,z,vx,vy,vz, a, e, i, O, w, M, mass);
// printf("%d %d: %lg (%lg %lg %lg) (%lg %lg %lg) \n", sysidx, bod, mass_planet, x,y,z,vx,vy,vz);
if(use_jacobi)
{
double bx, by, bz, bvx, bvy, bvz;
ens.get_barycenter(sysidx,bx,by,bz,bvx,bvy,bvz,bod-1);
x += bx; y += by; z += bz;
vx += bvx; vy += bvy; vz += bvz;
}
// assign body a mass, position and velocity
ens.set_body(sysidx, bod, mass_planet, x, y, z, vx, vy, vz);
if(cfg.count("verbose")&&(sysid<10))
{
double x_t = ens.x(sysidx,bod);
double y_t = ens.y(sysidx,bod);
double z_t = ens.z(sysidx,bod);
double vx_t = ens.vx(sysidx,bod);
double vy_t = ens.vy(sysidx,bod);
double vz_t = ens.vz(sysidx,bod);
std::cout << " x= " << x << "=" << x_t << " ";
std::cout << " y= " << y << "=" << y_t << " ";
std::cout << " z= " << z << "=" << z_t << " ";
std::cout << "vx= " << vx << "=" << vx_t << " ";
std::cout << "vy= " << vy << "=" << vy_t << " ";
std::cout << "vz= " << vz << "=" << vz_t << "\n";
}
} // end loop over bodies
// Shift into barycentric frame
ens.get_barycenter(sysidx,x,y,z,vx,vy,vz);
for(unsigned int bod=0;bod<ens.nbod();++bod)
{
ens.set_body(sysidx, bod, ens.mass(sysidx,bod),
ens.x(sysidx,bod)-x, ens.y(sysidx,bod)-y, ens.z(sysidx,bod)-z,
ens.vx(sysidx,bod)-vx, ens.vy(sysidx,bod)-vy, ens.vz(sysidx,bod)-vz);
} // end loop over bodies
}
/**
* Read in Keplerian coordinates from a text file
*
*/
defaultEnsemble generate_ensemble_with_initial_conditions_keplerian_from_file(const config& cfg)
{
defaultEnsemble ens = defaultEnsemble::create( cfg.require("nbod",0), cfg.require("nsys",0) );
std::cerr << "# nsystems = " << ens.nsys() << " nbodies/system = " << ens.nbod() << "\n";
// std::cerr << "# Set initial time for all systems = ";
double time_init = cfg.optional("time_init", 0.0);
// std::cerr << time_init << ".\n";
const bool use_jacobi = cfg.optional("use_jacobi", 0);
// std::cerr << "# Writing stable system ids\n";
ifstream jacobi_input( cfg.optional("input_mcmc_keplerian", string("mcmc.out")).c_str() );
for(unsigned int sysid=0;sysid<ens.nsys();++sysid)
{
assert(jacobi_input.good());
string id;
double mass_star;
jacobi_input >> id >> mass_star;
ens[sysid].id() = sysid;
ens[sysid].time() = time_init;
ens[sysid].set_active();
double x=0, y=0, z=0, vx=0, vy=0, vz=0;
ens.set_body(sysid, 0, mass_star, x, y, z, vx, vy, vz);
double mass_enclosed = mass_star;
for(unsigned int bod=1;bod<ens.nbod();++bod)
{
double mass_planet, a, e, i, O, w, M;
jacobi_input >> mass_planet >> a >> e >> i >> w >> O >> M;
// a = pow((period/365.25)*(period/365.25)*mass_enclosed,1.0/3.0);
i *= M_PI/180.;
O *= M_PI/180.;
w *= M_PI/180.;
M *= M_PI/180.;
mass_enclosed += mass_planet;
double mass = use_jacobi ? mass_enclosed : mass_star+mass_planet;
if(cfg.count("verbose")&&(sysid<10))
std::cout << "# Drawing sysid= " << sysid << " bod= " << bod << ' ' << mass_planet << " " << a << ' ' << e << ' ' << i*180./M_PI << ' ' << O*180./M_PI << ' ' << w*180./M_PI << ' ' << M*180./M_PI << '\n';
calc_cartesian_for_ellipse(x,y,z,vx,vy,vz, a, e, i, O, w, M, mass);
// printf("%d %d: %lg (%lg %lg %lg) (%lg %lg %lg) \n", sysid, bod, mass_planet, x,y,z,vx,vy,vz);
if(use_jacobi)
{
double bx, by, bz, bvx, bvy, bvz;
ens.get_barycenter(sysid,bx,by,bz,bvx,bvy,bvz,bod-1);
x += bx; y += by; z += bz;
vx += bvx; vy += bvy; vz += bvz;
}
// assign body a mass, position and velocity
ens.set_body(sysid, bod, mass_planet, x, y, z, vx, vy, vz);
if(cfg.count("verbose")&&(sysid<10))
{
double x_t = ens.x(sysid,bod);
double y_t = ens.y(sysid,bod);
double z_t = ens.z(sysid,bod);
double vx_t = ens.vx(sysid,bod);
double vy_t = ens.vy(sysid,bod);
double vz_t = ens.vz(sysid,bod);
std::cout << " x= " << x << "=" << x_t << " ";
std::cout << " y= " << y << "=" << y_t << " ";
std::cout << " z= " << z << "=" << z_t << " ";
std::cout << "vx= " << vx << "=" << vx_t << " ";
std::cout << "vy= " << vy << "=" << vy_t << " ";
std::cout << "vz= " << vz << "=" << vz_t << "\n";
}
} // end loop over bodies
// Shift into barycentric frame
ens.get_barycenter(sysid,x,y,z,vx,vy,vz);
for(unsigned int bod=0;bod<ens.nbod();++bod)
{
ens.set_body(sysid, bod, ens.mass(sysid,bod),
ens.x(sysid,bod)-x, ens.y(sysid,bod)-y, ens.z(sysid,bod)-z,
ens.vx(sysid,bod)-vx, ens.vy(sysid,bod)-vy, ens.vz(sysid,bod)-vz);
} // end loop over bodies
} // end loop over systems
return ens;
}
/**
* Read in Cartesian coordinates from a text file
*
*/
defaultEnsemble generate_ensemble_with_initial_conditions_cartesian_from_file(const config& cfg)
{
defaultEnsemble ens = defaultEnsemble::create( cfg.require("nbod",0), cfg.require("nsys",0) );
std::cerr << "# nsystems = " << ens.nsys() << " nbodies/system = " << ens.nbod() << "\n";
// std::cerr << "# Set initial time for all systems = ";
double time_init = cfg.optional("time_init", 0.0);
// std::cerr << time_init << ".\n";
const bool use_jacobi = cfg.optional("use_jacobi", 0);
// std::cerr << "# Writing stable system ids\n";
ifstream mcmc_input( cfg.optional("input_mcmc_cartesian", string("mcmc.out")).c_str() );
assert(mcmc_input.good());
const int lines_to_skip = cfg.optional("lines_to_skip", 0);
for(int i=0;i<lines_to_skip;++i)
{
assert(mcmc_input.good());
char junk[1024];
mcmc_input.getline(junk,1024);
}
for(unsigned int sysid=0;sysid<ens.nsys();++sysid)
{
assert(mcmc_input.good());
#if 1
std::vector<double> masses(ens.nbod(),0.0);
for(unsigned int bod=0;bod<ens.nbod();++bod)
{
mcmc_input >> masses[bod];
} // end loop over bodies
ens[sysid].id() = sysid;
ens[sysid].time() = time_init;
ens[sysid].set_active();
double x=0, y=0, z=0, vx=0, vy=0, vz=0;
ens.set_body(sysid, 0, masses[0], x, y, z, vx, vy, vz);
double mass_enclosed = masses[0];
for(unsigned int bod=1;bod<ens.nbod();++bod)
{
mcmc_input >> x >> y >> z >> vx >> vy >> vz;
mass_enclosed += masses[bod];
double mass = use_jacobi ? mass_enclosed : masses[0]+masses[bod];
if(cfg.count("verbose")&&(sysid<10))
std::cout << "# Drawing sysid= " << sysid << " bod= " << bod << ' ' << masses[bod] << " " << x << ' ' << y << ' ' << z << ' ' << vx << ' ' << vy << ' ' << vz << '\n';
if(use_jacobi)
{
double bx, by, bz, bvx, bvy, bvz;
ens.get_barycenter(sysid,bx,by,bz,bvx,bvy,bvz,bod-1);
x += bx; y += by; z += bz;
vx += bvx; vy += bvy; vz += bvz;
}
// assign body a mass, position and velocity
ens.set_body(sysid, bod, masses[bod], x, y, z, vx, vy, vz);
if(cfg.count("verbose")&&(sysid<10))
{
double x_t = ens.x(sysid,bod);
double y_t = ens.y(sysid,bod);
double z_t = ens.z(sysid,bod);
double vx_t = ens.vx(sysid,bod);
double vy_t = ens.vy(sysid,bod);
double vz_t = ens.vz(sysid,bod);
std::cout << " x= " << x << "=" << x_t << " ";
std::cout << " y= " << y << "=" << y_t << " ";
std::cout << " z= " << z << "=" << z_t << " ";
std::cout << "vx= " << vx << "=" << vx_t << " ";
std::cout << "vy= " << vy << "=" << vy_t << " ";
std::cout << "vz= " << vz << "=" << vz_t << "\n";
}
#else
std::vector<double> masses(ens.nbod(),0.0);
double x=0, y=0, z=0, vx=0, vy=0, vz=0;
double mass_enclosed = 0.0;
ens[sysid].id() = sysid;
ens[sysid].time() = time_init;
ens[sysid].set_active();
for(unsigned int bod=0;bod<ens.nbod();++bod)
{
mcmc_input >> masses[bod];
mcmc_input >> x >> y >> z >> vx >> vy >> vz;
mass_enclosed += masses[bod];
double mass = use_jacobi ? mass_enclosed : masses[0]+masses[bod];
if(cfg.count("verbose")&&(sysid<10))
std::cout << "# Drawing sysid= " << sysid << " bod= " << bod << ' ' << masses[bod] << " " << x << ' ' << y << ' ' << z << ' ' << vx << ' ' << vy << ' ' << vz << '\n';
if(use_jacobi)
{
double bx, by, bz, bvx, bvy, bvz;
ens.get_barycenter(sysid,bx,by,bz,bvx,bvy,bvz,bod-1);
x += bx; y += by; z += bz;
vx += bvx; vy += bvy; vz += bvz;
}
// assign body a mass, position and velocity
ens.set_body(sysid, bod, masses[bod], x, y, z, vx, vy, vz);
if(cfg.count("verbose")&&(sysid<10))
{
double x_t = ens.x(sysid,bod);
double y_t = ens.y(sysid,bod);
double z_t = ens.z(sysid,bod);
double vx_t = ens.vx(sysid,bod);
double vy_t = ens.vy(sysid,bod);
double vz_t = ens.vz(sysid,bod);
std::cout << " x= " << x << "=" << x_t << " ";
std::cout << " y= " << y << "=" << y_t << " ";
std::cout << " z= " << z << "=" << z_t << " ";
std::cout << "vx= " << vx << "=" << vx_t << " ";
std::cout << "vy= " << vy << "=" << vy_t << " ";
std::cout << "vz= " << vz << "=" << vz_t << "\n";
}
#endif
} // end loop over bodies
// Shift into barycentric frame
ens.get_barycenter(sysid,x,y,z,vx,vy,vz);
for(unsigned int bod=0;bod<ens.nbod();++bod)
{
ens.set_body(sysid, bod, ens.mass(sysid,bod),
ens.x(sysid,bod)-x, ens.y(sysid,bod)-y, ens.z(sysid,bod)-z,
ens.vx(sysid,bod)-vx, ens.vy(sysid,bod)-vy, ens.vz(sysid,bod)-vz);
} // end loop over bodies
} // end loop over systems
return ens;
}
void print_system(const swarm::ensemble& ens, const int systemid, std::ostream &os = std::cout)
{
enum {
JACOBI, BARYCENTRIC, ASTROCENTRIC
} COORDINATE_SYSTEM = BARYCENTRIC;
const bool use_jacobi = cfg.optional("use_jacobi_output", 0);
if(use_jacobi) COORDINATE_SYSTEM = JACOBI;
std::streamsize cout_precision_old = os.precision();
os.precision(10);
os << "sys_idx= " << systemid << " sys_id= " << ens[systemid].id() << " time= " << ens.time(systemid) << "\n";
double star_mass = ens.mass(systemid,0);
double mass_effective = star_mass;
double bx, by, bz, bvx, bvy, bvz;
switch(COORDINATE_SYSTEM)
{
case JACOBI:
ens.get_barycenter(systemid,bx,by,bz,bvx,bvy,bvz,0);
break;
case BARYCENTRIC:
ens.get_barycenter(systemid,bx,by,bz,bvx,bvy,bvz);
break;
case ASTROCENTRIC:
ens.get_body(systemid,0,star_mass,bx,by,bz,bvx,bvy,bvz);
break;
}
for(unsigned int bod=1;bod<ens.nbod();++bod) // Skip star since printing orbits
{
// std::cout << "pos= (" << ens.x(systemid, bod) << ", " << ens.y(systemid, bod) << ", " << ens.z(systemid, bod) << ") vel= (" << ens.vx(systemid, bod) << ", " << ens.vy(systemid, bod) << ", " << ens.vz(systemid, bod) << ").\n";
double mass = ens.mass(systemid,bod);
switch(COORDINATE_SYSTEM)
{
case JACOBI:
ens.get_barycenter(systemid,bx,by,bz,bvx,bvy,bvz,bod-1);
mass_effective += mass;
break;
case BARYCENTRIC:
mass_effective = star_mass + mass;
break;
case ASTROCENTRIC:
mass_effective = star_mass + mass;
break;
}
double x = ens.x(systemid,bod)-bx;
double y = ens.y(systemid,bod)-by;
double z = ens.z(systemid,bod)-bz;
double vx = ens.vx(systemid,bod)-bvx;
double vy = ens.vy(systemid,bod)-bvy;
double vz = ens.vz(systemid,bod)-bvz;
double a, e, i, O, w, M;
calc_keplerian_for_cartesian(a,e,i,O,w,M, x,y,z,vx,vy,vz, mass_effective);
i *= 180/M_PI;
O *= 180/M_PI;
w *= 180/M_PI;
M *= 180/M_PI;
// os << " b= " << bod << " m= " << mass << " a= " << a << " e= " << e << " i= " << i << " Omega= " << O << " omega= " << w << " M= " << M << "\n";
os << ens[systemid].id() << " " << bod << " " << mass << " " << a << " " << e << " " << i << " " << O << " " << w << " " << M << "\n";
}
os.precision(cout_precision_old);
os << std::flush;
}
void print_selected_systems(swarm::ensemble& ens, std::vector<unsigned int> systemindices, std::ostream &os = std::cout)
{
for(unsigned int i=0; i<systemindices.size(); ++i)
print_system(ens,systemindices[i], os);
}
void print_selected_systems_for_demo(swarm::ensemble& ens, unsigned int nprint, std::ostream &os = std::cout)
{
if(nprint>ens.nsys()) nprint = ens.nsys();
for(unsigned int systemid = 0; systemid< nprint; ++systemid)
print_system(ens,systemid,os);
}
void write_stable_systems(defaultEnsemble &ens, defaultEnsemble &ens_init)
{
// find the stable ones and output the initial conditions for the stable
// ones in keplerian coordinates
// std::cerr << "# Finding stable system ids\n";
std::vector<unsigned int> stable_system_indices, unstable_system_indices;
for(int i = 0; i < ens.nsys() ; i++ )
{
if(ens[i].is_disabled())
unstable_system_indices.push_back(i);
else
stable_system_indices.push_back(i);
}
// std::cerr << "# Writing stable system ids\n";
if(cfg.count("stable_init_output"))
{
ofstream stable_init_output( cfg.optional("stable_init_output", string("stable_init_output.txt")).c_str() );
print_selected_systems(ens_init,stable_system_indices, stable_init_output);
}
if(cfg.count("stable_final_output"))
{
ofstream stable_final_output( cfg.optional("stable_final_output", string("stable_final_output.txt")).c_str() );
print_selected_systems(ens,stable_system_indices, stable_final_output);
}
if(cfg.count("unstable_init_output"))
{
ofstream unstable_init_output( cfg.optional("unstable_init_output", string("unstable_init_output.txt")).c_str() );
print_selected_systems(ens_init,unstable_system_indices, unstable_init_output);
}
if(cfg.count("unstable_final_output"))
{
ofstream unstable_final_output( cfg.optional("unstable_final_output", string("unstable_final_output.txt")).c_str() );
print_selected_systems(ens,unstable_system_indices, unstable_final_output);
}
}
