bool Check(Atoms atom)
{
return(atom == Look().Atom);
}
public static Universe Build(Namd.Psf psf, Namd.Prm prm, Pdb pdb, bool?ignore_neg_occupancy, ITextLogger logger)
{
Universe univ = new Universe();
// atoms
Atoms atoms = new Atoms(univ);
Dictionary <int, Atom> id_atom = new Dictionary <int, Atom>();
Pdb.Atom[] pdb_atoms = pdb.atoms;
HDebug.Assert(psf.atoms.Length == pdb_atoms.Length);
for (int i = 0; i < psf.atoms.Length; i++)
{
HDebug.Assert(pdb_atoms[i].try_serial == null || psf.atoms[i].AtomId == pdb_atoms[i].serial); // when num atoms in pdb is too large (>99999), it is marked as *****
string type0 = psf.atoms[i].AtomType;
Atom atom = new Atom(psf.atoms[i], prm.FindNonbonded(type0, logger), pdb_atoms[i]);
atom.Coord = pdb_atoms[i].coord;
{
if (ignore_neg_occupancy == null)
{
if (pdb_atoms[i].occupancy < 0)
{
throw new HException("unhandled negative occupancy during building universe");
}
}
else
{
if (ignore_neg_occupancy.Value && pdb_atoms[i].occupancy < 0)
{
continue;
}
}
}
atoms.Add(atom);
id_atom.Add(psf.atoms[i].AtomId, atom);
}
// bonds
Bonds bonds = new Bonds();
for (int i = 0; i < psf.bonds.GetLength(0); i++)
{
int id0 = psf.bonds[i, 0]; if (id_atom.ContainsKey(id0) == false)
{
continue;
}
Atom atom0 = id_atom[id0]; string type0 = atom0.AtomType;
int id1 = psf.bonds[i, 1]; if (id_atom.ContainsKey(id1) == false)
{
continue;
}
Atom atom1 = id_atom[id1]; string type1 = atom1.AtomType;
Bond bond = new Bond(atom0, atom1, prm.FindBond(type0, type1, logger));
bonds.Add(bond);
atom0.Bonds.Add(bond); atom0.Inter123.Add(atom1); atom0.Inter12.Add(atom1);
atom1.Bonds.Add(bond); atom1.Inter123.Add(atom0); atom1.Inter12.Add(atom0);
}
// angles
Angles angles = new Angles();
for (int i = 0; i < psf.angles.GetLength(0); i++)
{
int id0 = psf.angles[i, 0]; if (id_atom.ContainsKey(id0) == false)
{
continue;
}
Atom atom0 = id_atom[id0]; string type0 = atom0.AtomType;
int id1 = psf.angles[i, 1]; if (id_atom.ContainsKey(id1) == false)
{
continue;
}
Atom atom1 = id_atom[id1]; string type1 = atom1.AtomType;
int id2 = psf.angles[i, 2]; if (id_atom.ContainsKey(id2) == false)
{
continue;
}
Atom atom2 = id_atom[id2]; string type2 = atom2.AtomType;
var prm_angle = prm.FindAngle(type0, type1, type2, logger);
if (prm_angle == null)
{
HDebug.Assert(false);
logger.Log(string.Format
("try to add non-existing angle (({0}, prm {1})-({2}, prm {3})-({4}, prm {5})) in prm"
, atom0, type0, atom1, type1, atom2, type2
));
continue;
}
Angle angle = new Angle(atom0, atom1, atom2, prm_angle);
angles.Add(angle);
atom0.Angles.Add(angle); atom0.Inter123.Add(atom1); atom0.Inter123.Add(atom2);
atom1.Angles.Add(angle); atom1.Inter123.Add(atom2); atom1.Inter123.Add(atom0);
atom2.Angles.Add(angle); atom2.Inter123.Add(atom0); atom2.Inter123.Add(atom1);
}
// dihedrals
Dihedrals dihedrals = new Dihedrals();
for (int i = 0; i < psf.dihedrals.GetLength(0); i++)
{
int id0 = psf.dihedrals[i, 0]; if (id_atom.ContainsKey(id0) == false)
{
continue;
}
Atom atom0 = id_atom[id0]; string type0 = atom0.AtomType;
int id1 = psf.dihedrals[i, 1]; if (id_atom.ContainsKey(id1) == false)
{
continue;
}
Atom atom1 = id_atom[id1]; string type1 = atom1.AtomType;
int id2 = psf.dihedrals[i, 2]; if (id_atom.ContainsKey(id2) == false)
{
continue;
}
Atom atom2 = id_atom[id2]; string type2 = atom2.AtomType;
int id3 = psf.dihedrals[i, 3]; if (id_atom.ContainsKey(id3) == false)
{
continue;
}
Atom atom3 = id_atom[id3]; string type3 = atom3.AtomType;
var prm_dihedrals = prm.FindDihedral(type0, type1, type2, type3, logger);
if (prm_dihedrals.Length == 0)
{
HDebug.Assert(false);
logger.Log(string.Format
("try to add non-existing dihedral (({0}, prm {1})-({2}, prm {3})-({4}, prm {5})-({6}, prm {7})) in prm"
, atom0, type0, atom1, type1, atom2, type2, atom3, type3
));
continue;
}
foreach (var prm_dihedral in prm_dihedrals)
{
Dihedral dihedral;
if (atom0.ID < atom3.ID)
{
dihedral = new Dihedral(atom0, atom1, atom2, atom3, prm_dihedral);
}
else
{
dihedral = new Dihedral(atom3, atom2, atom1, atom0, prm_dihedral);
}
dihedrals.Add(dihedral);
atom0.Dihedrals.Add(dihedral); //atom0.Inter123.Add(atom1); atom0.Inter123.Add(atom2); atom0.Inter123.Add(atom3);
atom1.Dihedrals.Add(dihedral); //atom1.Inter123.Add(atom2); atom1.Inter123.Add(atom3); atom1.Inter123.Add(atom0);
atom2.Dihedrals.Add(dihedral); //atom2.Inter123.Add(atom3); atom2.Inter123.Add(atom0); atom2.Inter123.Add(atom1);
atom3.Dihedrals.Add(dihedral); //atom3.Inter123.Add(atom0); atom3.Inter123.Add(atom1); atom3.Inter123.Add(atom2);
}
}
// impropers
Impropers impropers = new Impropers();
for (int i = 0; i < psf.impropers.GetLength(0); i++)
{
int id0 = psf.impropers[i, 0]; if (id_atom.ContainsKey(id0) == false)
{
continue;
}
Atom atom0 = id_atom[id0]; string type0 = atom0.AtomType;
int id1 = psf.impropers[i, 1]; if (id_atom.ContainsKey(id1) == false)
{
continue;
}
Atom atom1 = id_atom[id1]; string type1 = atom1.AtomType;
int id2 = psf.impropers[i, 2]; if (id_atom.ContainsKey(id2) == false)
{
continue;
}
Atom atom2 = id_atom[id2]; string type2 = atom2.AtomType;
int id3 = psf.impropers[i, 3]; if (id_atom.ContainsKey(id3) == false)
{
continue;
}
Atom atom3 = id_atom[id3]; string type3 = atom3.AtomType;
Improper improper = new Improper(atom0, atom1, atom2, atom3, prm.FindImproper(type0, type1, type2, type3, logger));
impropers.Add(improper);
atom0.Impropers.Add(improper); //atom0.Inter123.Add(atom1); atom0.Inter123.Add(atom2); atom0.Inter123.Add(atom3);
atom1.Impropers.Add(improper); //atom1.Inter123.Add(atom2); atom1.Inter123.Add(atom3); atom1.Inter123.Add(atom0);
atom2.Impropers.Add(improper); //atom2.Inter123.Add(atom3); atom2.Inter123.Add(atom0); atom2.Inter123.Add(atom1);
atom3.Impropers.Add(improper); //atom3.Inter123.Add(atom0); atom3.Inter123.Add(atom1); atom3.Inter123.Add(atom2);
}
// 1-4 interactions
for (int i = 0; i < atoms.Count; i++)
{
HashSet <Atom> Inter14 = new HashSet <Atom>();
BuildInter1toN(atoms[i], 4, Inter14); // find all atoms for 1-4 interaction
Inter14.Remove(atoms[i]); // remove self
foreach (Atom atom in atoms[i].Inter123)
{
Inter14.Remove(atom); // remove all 1-2, 1-3 interactions
}
atoms[i].Inter14 = Inter14;
}
Nonbonded14s nonbonded14s = new Nonbonded14s();
nonbonded14s.Build(atoms);
//// nonbondeds
//// do not make this list in advance, because it depends on the atom positions
//Nonbondeds nonbondeds = new Nonbondeds();
//nonbondeds.Build(atoms);
//Universe univ = new Universe();
univ.pdb = pdb;
univ.refs.Add("psf", psf);
univ.refs.Add("prm", prm);
univ.atoms = atoms;
univ.bonds = bonds;
univ.angles = angles;
univ.dihedrals = dihedrals;
univ.impropers = impropers;
//univ.nonbondeds = nonbondeds ; // do not make this list in advance, because it depends on the atom positions
univ.nonbonded14s = nonbonded14s;
HDebug.Assert(univ.Verify());
return(univ);
}
