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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@2119 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp
2008-09-29 23:07:31 +00:00
parent 32a7a040ef
commit 24732209b8
1 changed files with 6 additions and 7 deletions
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13
src/fix_rigid.cpp
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@ -991,20 +991,19 @@ int FixRigid::dof(int igroup)
int *nall = new int[nbody];
MPI_Allreduce(ncount,nall,nbody,MPI_INT,MPI_SUM,world);
// remove d*N - d(d+1)/2 dof for each rigid body if more than 2 atoms in igroup
// in 3d/2d, remove d*N - d(d+1)/2 dof for each rigid body
// in 3d, remove an additional dof for each diatomic rigid body
// http://en.wikipedia.org/wiki/Degrees_of_freedom_(engineering)
// remove an additional dof for each diatomic rigid body in igroup if d=3
int n = 0;
if (domain->dimension == 3) {
for (int ibody = 0; ibody < nbody; ibody++) {
if (nall[ibody] > 2) n += 3*nall[ibody] - 6;
else if (nall[ibody] == 2) n++;
n += 3*nall[ibody] - 6;
if (nall[ibody] == 2) n++;
}
} else if (domain->dimension == 2) {
for (int ibody = 0; ibody < nbody; ibody++) {
if (nall[ibody] > 1) n += 2*nall[ibody] - 3;
}
for (int ibody = 0; ibody < nbody; ibody++)
n += 2*nall[ibody] - 3;
}
delete [] ncount;