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Merge branch 'develop' into general-triclinic

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This commit is contained in:
Axel Kohlmeyer
2024-01-18 15:01:09 -05:00
parent c6d1cbef5a 0ad1d29c4d
commit 8cf2705d68
146 changed files with 3789 additions and 3269 deletions
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369
examples/PACKAGES/cgdna/util/generate.py
View File

@ -22,22 +22,26 @@
"""
Import basic modules
"""
# for python2/3 compatibility
from __future__ import print_function
import sys, os, timeit
from timeit import default_timer as timer
start_time = timer()
"""
Try to import numpy; if failed, import a local version mynumpy
Try to import numpy; if failed, import a local version mynumpy
which needs to be provided
"""
try:
import numpy as np
except:
print >> sys.stderr, "numpy not found. Exiting."
print("numpy not found. Exiting.", file=sys.stderr)
sys.exit(1)
"""
Check that the required arguments (box offset and size in simulation units
Check that the required arguments (box offset and size in simulation units
and the sequence file were provided
"""
try:
@ -45,8 +49,8 @@ try:
box_length = float(sys.argv[2])
infile = sys.argv[3]
except:
print >> sys.stderr, "Usage: %s <%s> <%s> <%s>" % (sys.argv[0], \
"box offset", "box length", "file with sequences")
print( "Usage: %s <%s> <%s> <%s>" % (sys.argv[0], \
"box offset", "box length", "file with sequences"), file=sys.stderr)
sys.exit(1)
box = np.array ([box_length, box_length, box_length])
@ -57,8 +61,7 @@ try:
inp = open (infile, 'r')
inp.close()
except:
print >> sys.stderr, "Could not open file '%s' for reading. \
Aborting." % infile
print( "Could not open file '%s' for reading. Aborting." % infile, file=sys.stderr)
sys.exit(2)
# return parts of a string
@ -86,7 +89,7 @@ Define auxiliary variables for the construction of a helix
# center of the double strand
CM_CENTER_DS = POS_BASE + 0.2
# ideal distance between base sites of two nucleotides
# ideal distance between base sites of two nucleotides
# which are to be base paired in a duplex
BASE_BASE = 0.3897628551303122
@ -118,7 +121,7 @@ strandnum = []
bonds = []
"""
"""
Convert local body frame to quaternion DOF
"""
def exyz_to_quat (mya1, mya3):
@ -135,25 +138,25 @@ def exyz_to_quat (mya1, mya3):
# compute other components from it
if q0sq >= 0.25:
myquat[0] = np.sqrt(q0sq)
myquat[1] = (mya2[2] - mya3[1]) / (4.0*myquat[0])
myquat[2] = (mya3[0] - mya1[2]) / (4.0*myquat[0])
myquat[3] = (mya1[1] - mya2[0]) / (4.0*myquat[0])
myquat[0] = np.sqrt(q0sq)
myquat[1] = (mya2[2] - mya3[1]) / (4.0*myquat[0])
myquat[2] = (mya3[0] - mya1[2]) / (4.0*myquat[0])
myquat[3] = (mya1[1] - mya2[0]) / (4.0*myquat[0])
elif q1sq >= 0.25:
myquat[1] = np.sqrt(q1sq)
myquat[0] = (mya2[2] - mya3[1]) / (4.0*myquat[1])
myquat[2] = (mya2[0] + mya1[1]) / (4.0*myquat[1])
myquat[3] = (mya1[2] + mya3[0]) / (4.0*myquat[1])
myquat[1] = np.sqrt(q1sq)
myquat[0] = (mya2[2] - mya3[1]) / (4.0*myquat[1])
myquat[2] = (mya2[0] + mya1[1]) / (4.0*myquat[1])
myquat[3] = (mya1[2] + mya3[0]) / (4.0*myquat[1])
elif q2sq >= 0.25:
myquat[2] = np.sqrt(q2sq)
myquat[0] = (mya3[0] - mya1[2]) / (4.0*myquat[2])
myquat[1] = (mya2[0] + mya1[1]) / (4.0*myquat[2])
myquat[3] = (mya3[1] + mya2[2]) / (4.0*myquat[2])
myquat[2] = np.sqrt(q2sq)
myquat[0] = (mya3[0] - mya1[2]) / (4.0*myquat[2])
myquat[1] = (mya2[0] + mya1[1]) / (4.0*myquat[2])
myquat[3] = (mya3[1] + mya2[2]) / (4.0*myquat[2])
elif q3sq >= 0.25:
myquat[3] = np.sqrt(q3sq)
myquat[0] = (mya1[1] - mya2[0]) / (4.0*myquat[3])
myquat[1] = (mya3[0] + mya1[2]) / (4.0*myquat[3])
myquat[2] = (mya3[1] + mya2[2]) / (4.0*myquat[3])
myquat[3] = np.sqrt(q3sq)
myquat[0] = (mya1[1] - mya2[0]) / (4.0*myquat[3])
myquat[1] = (mya3[0] + mya1[2]) / (4.0*myquat[3])
myquat[2] = (mya3[1] + mya2[2]) / (4.0*myquat[3])
norm = 1.0/np.sqrt(myquat[0]*myquat[0] + myquat[1]*myquat[1] + \
myquat[2]*myquat[2] + myquat[3]*myquat[3])
@ -169,62 +172,62 @@ Adds a strand to the system by appending it to the array of previous strands
"""
def add_strands (mynewpositions, mynewa1s, mynewa3s):
overlap = False
# This is a simple check for each of the particles where for previously
# placed particles i we check whether it overlaps with any of the
# This is a simple check for each of the particles where for previously
# placed particles i we check whether it overlaps with any of the
# newly created particles j
print >> sys.stdout, "## Checking for overlaps"
print( "## Checking for overlaps", file=sys.stdout)
for i in xrange(len(positions)):
for i in range(len(positions)):
p = positions[i]
pa1 = a1s[i]
p = positions[i]
pa1 = a1s[i]
for j in xrange (len(mynewpositions)):
for j in range (len(mynewpositions)):
q = mynewpositions[j]
qa1 = mynewa1s[j]
q = mynewpositions[j]
qa1 = mynewa1s[j]
# skip particles that are anyway too far away
dr = p - q
dr -= box * np.rint (dr / box)
if np.dot(dr, dr) > RC2:
continue
# skip particles that are anyway too far away
dr = p - q
dr -= box * np.rint(dr / box)
if np.dot(dr, dr) > RC2:
continue
# base site and backbone site of the two particles
# base site and backbone site of the two particles
p_pos_back = p + pa1 * POS_BACK
p_pos_base = p + pa1 * POS_BASE
q_pos_back = q + qa1 * POS_BACK
q_pos_base = q + qa1 * POS_BASE
# check for no overlap between the two backbone sites
# check for no overlap between the two backbone sites
dr = p_pos_back - q_pos_back
dr -= box * np.rint (dr / box)
dr -= box * np.rint(dr / box)
if np.dot(dr, dr) < RC2_BACK:
overlap = True
# check for no overlap between the two base sites
# check for no overlap between the two base sites
dr = p_pos_base - q_pos_base
dr -= box * np.rint (dr / box)
dr -= box * np.rint(dr / box)
if np.dot(dr, dr) < RC2_BASE:
overlap = True
# check for no overlap between backbone site of particle p
# with base site of particle q
# check for no overlap between backbone site of particle p
# with base site of particle q
dr = p_pos_back - q_pos_base
dr -= box * np.rint (dr / box)
if np.dot(dr, dr) < RC2_BACK_BASE:
overlap = True
# check for no overlap between base site of particle p and
# backbone site of particle q
# check for no overlap between base site of particle p and
# backbone site of particle q
dr = p_pos_base - q_pos_back
dr -= box * np.rint (dr / box)
if np.dot(dr, dr) < RC2_BACK_BASE:
overlap = True
# exit if there is an overlap
# exit if there is an overlap
if overlap:
return False
@ -237,10 +240,10 @@ def add_strands (mynewpositions, mynewa1s, mynewa3s):
a1s.append (p)
for p in mynewa3s:
a3s.append (p)
# calculate quaternion from local body frame and append
for ia in xrange(len(mynewpositions)):
mynewquaternions = exyz_to_quat(mynewa1s[ia],mynewa3s[ia])
quaternions.append(mynewquaternions)
# calculate quaternion from local body frame and append
for ia in range(len(mynewpositions)):
mynewquaternions = exyz_to_quat(mynewa1s[ia],mynewa3s[ia])
quaternions.append(mynewquaternions)
return True
@ -281,7 +284,7 @@ def get_rotation_matrix(axis, anglest):
[olc*x*z-st*y, olc*y*z+st*x, olc*z*z+ct]])
"""
Generates the position and orientation vectors of a
Generates the position and orientation vectors of a
(single or double) strand from a sequence string
"""
def generate_strand(bp, sequence=None, start_pos=np.array([0, 0, 0]), \
@ -295,76 +298,75 @@ def generate_strand(bp, sequence=None, start_pos=np.array([0, 0, 0]), \
# overall direction of the helix
dir = np.array(dir, dtype=float)
if sequence == None:
sequence = np.random.randint(1, 5, bp)
sequence = np.random.randint(1, 5, bp)
# the elseif here is most likely redundant
# the elseif here is most likely redundant
elif len(sequence) != bp:
n = bp - len(sequence)
sequence += np.random.randint(1, 5, n)
print >> sys.stderr, "sequence is too short, adding %d random bases" % n
n = bp - len(sequence)
sequence += np.random.randint(1, 5, n)
print( "sequence is too short, adding %d random bases" % n, file=sys.stderr)
# normalize direction
dir_norm = np.sqrt(np.dot(dir,dir))
if dir_norm < 1e-10:
print >> sys.stderr, "direction must be a valid vector, \
defaulting to (0, 0, 1)"
dir = np.array([0, 0, 1])
print( "direction must be a valid vector, defaulting to (0, 0, 1)", file=sys.stderr)
dir = np.array([0, 0, 1])
else: dir /= dir_norm
# find a vector orthogonal to dir to act as helix direction,
# if not provided switch off random orientation
if perp is None or perp is False:
v1 = np.random.random_sample(3)
v1 -= dir * (np.dot(dir, v1))
v1 /= np.sqrt(sum(v1*v1))
v1 = np.random.random_sample(3)
v1 -= dir * (np.dot(dir, v1))
v1 /= np.sqrt(sum(v1*v1))
else:
v1 = perp;
v1 = perp;
# generate rotational matrix representing the overall rotation of the helix
R0 = get_rotation_matrix(dir, rot)
# rotation matrix corresponding to one step along the helix
R = get_rotation_matrix(dir, [1, "bp"])
# set the vector a1 (backbone to base) to v1
# set the vector a1 (backbone to base) to v1
a1 = v1
# apply the global rotation to a1
# apply the global rotation to a1
a1 = np.dot(R0, a1)
# set the position of the fist backbone site to start_pos
rb = np.array(start_pos)
# set a3 to the direction of the helix
a3 = dir
for i in range(bp):
# work out the position of the centre of mass of the nucleotide
rcdm = rb - CM_CENTER_DS * a1
# append to newpositions
mynewpositions.append(rcdm)
mynewa1s.append(a1)
mynewa3s.append(a3)
# if we are not at the end of the helix, we work out a1 and rb for the
# next nucleotide along the helix
if i != bp - 1:
a1 = np.dot(R, a1)
rb += a3 * BASE_BASE
rcdm = rb - CM_CENTER_DS * a1
# if we are working on a double strand, we do a cycle similar
# append to newpositions
mynewpositions.append(rcdm)
mynewa1s.append(a1)
mynewa3s.append(a3)
# if we are not at the end of the helix, we work out a1 and rb for the
# next nucleotide along the helix
if i != bp - 1:
a1 = np.dot(R, a1)
rb += a3 * BASE_BASE
# if we are working on a double strand, we do a cycle similar
# to the previous one but backwards
if double == True:
a1 = -a1
a3 = -dir
R = R.transpose()
for i in range(bp):
rcdm = rb - CM_CENTER_DS * a1
mynewpositions.append (rcdm)
mynewa1s.append (a1)
mynewa3s.append (a3)
a1 = np.dot(R, a1)
rb += a3 * BASE_BASE
a1 = -a1
a3 = -dir
R = R.transpose()
for i in range(bp):
rcdm = rb - CM_CENTER_DS * a1
mynewpositions.append (rcdm)
mynewa1s.append (a1)
mynewa3s.append (a3)
a1 = np.dot(R, a1)
rb += a3 * BASE_BASE
assert (len (mynewpositions) > 0)
@ -391,10 +393,10 @@ def read_strands(filename):
try:
infile = open (filename)
except:
print >> sys.stderr, "Could not open file '%s'. Aborting." % filename
print( "Could not open file '%s'. Aborting." % filename, file=sys.stderr )
sys.exit(2)
# This block works out the number of nucleotides and strands by reading
# This block works out the number of nucleotides and strands by reading
# the number of non-empty lines in the input file and the number of letters,
# taking the possible DOUBLE keyword into account.
nstrands, nnucl, nbonds = 0, 0, 0
@ -406,30 +408,29 @@ def read_strands(filename):
if line[:6] == 'DOUBLE':
line = line.split()[1]
length = len(line)
print >> sys.stdout, "## Found duplex of %i base pairs" % length
print( "## Found duplex of %i base pairs" % length, file=sys.stdout)
nnucl += 2*length
nstrands += 2
nbonds += (2*length-2)
nbonds += (2*length-2)
else:
line = line.split()[0]
length = len(line)
print >> sys.stdout, \
"## Found single strand of %i bases" % length
print( "## Found single strand of %i bases" % length, file=sys.stdout)
nnucl += length
nstrands += 1
nbonds += length-1
nbonds += length-1
# rewind the sequence input file
infile.seek(0)
print >> sys.stdout, "## nstrands, nnucl = ", nstrands, nnucl
print( "## nstrands, nnucl = ", nstrands, nnucl, file=sys.stdout)
# generate the data file in LAMMPS format
try:
out = open ("data.oxdna", "w")
except:
print >> sys.stderr, "Could not open data file for writing. Aborting."
print( "Could not open data file for writing. Aborting.", file=sys.stderr)
sys.exit(2)
lines = infile.readlines()
nlines = len(lines)
i = 1
@ -440,115 +441,114 @@ def read_strands(filename):
line = line.upper().strip()
# skip empty lines
if len(line) == 0:
i += 1
continue
if len(line) == 0:
i += 1
continue
# block for duplexes: last argument of the generate function
# is set to 'True'
# block for duplexes: last argument of the generate function
# is set to 'True'
if line[:6] == 'DOUBLE':
line = line.split()[1]
length = len(line)
seq = [(base_to_number[x]) for x in line]
myns += 1
for b in xrange(length):
basetype.append(seq[b])
strandnum.append(myns)
myns += 1
for b in range(length):
basetype.append(seq[b])
strandnum.append(myns)
for b in xrange(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
for b in range(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
# create the sequence of the second strand as made of
# complementary bases
seq2 = [5-s for s in seq]
seq2.reverse()
# create the sequence of the second strand as made of
# complementary bases
seq2 = [5-s for s in seq]
seq2.reverse()
myns += 1
for b in xrange(length):
basetype.append(seq2[b])
strandnum.append(myns)
myns += 1
for b in range(length):
basetype.append(seq2[b])
strandnum.append(myns)
for b in xrange(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
print >> sys.stdout, "## Created duplex of %i bases" % (2*length)
for b in range(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
# generate random position of the first nucleotide
print( "## Created duplex of %i bases" % (2*length), file=sys.stdout)
# generate random position of the first nucleotide
cdm = box_offset + np.random.random_sample(3) * box
# generate the random direction of the helix
# generate the random direction of the helix
axis = np.random.random_sample(3)
axis /= np.sqrt(np.dot(axis, axis))
# use the generate function defined above to create
# the position and orientation vector of the strand
# use the generate function defined above to create
# the position and orientation vector of the strand
newpositions, newa1s, newa3s = generate_strand(len(line), \
sequence=seq, dir=axis, start_pos=cdm, double=True)
sequence=seq, dir=axis, start_pos=cdm, double=True)
# generate a new position for the strand until it does not overlap
# with anything already present
start = timer()
# with anything already present
start = timer()
while not add_strands(newpositions, newa1s, newa3s):
cdm = box_offset + np.random.random_sample(3) * box
axis = np.random.random_sample(3)
axis /= np.sqrt(np.dot(axis, axis))
newpositions, newa1s, newa3s = generate_strand(len(line), \
sequence=seq, dir=axis, start_pos=cdm, double=True)
print >> sys.stdout, "## Trying %i" % i
end = timer()
print >> sys.stdout, "## Added duplex of %i bases (line %i/%i) in %.2fs, now at %i/%i" % \
(2*length, i, nlines, end-start, len(positions), nnucl)
sequence=seq, dir=axis, start_pos=cdm, double=True)
print( "## Trying %i" % i, file=sys.stdout)
end = timer()
print( "## Added duplex of %i bases (line %i/%i) in %.2fs, now at %i/%i" % \
(2*length, i, nlines, end-start, len(positions), nnucl), file=sys.stdout)
# block for single strands: last argument of the generate function
# is set to 'False'
# block for single strands: last argument of the generate function
# is set to 'False'
else:
length = len(line)
seq = [(base_to_number[x]) for x in line]
myns += 1
for b in xrange(length):
basetype.append(seq[b])
strandnum.append(myns)
myns += 1
for b in range(length):
basetype.append(seq[b])
strandnum.append(myns)
for b in xrange(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
for b in range(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
# generate random position of the first nucleotide
# generate random position of the first nucleotide
cdm = box_offset + np.random.random_sample(3) * box
# generate the random direction of the helix
# generate the random direction of the helix
axis = np.random.random_sample(3)
axis /= np.sqrt(np.dot(axis, axis))
print >> sys.stdout, \
"## Created single strand of %i bases" % length
print("## Created single strand of %i bases" % length, file=sys.stdout)
newpositions, newa1s, newa3s = generate_strand(length, \
sequence=seq, dir=axis, start_pos=cdm, double=False)
start = timer()
start = timer()
while not add_strands(newpositions, newa1s, newa3s):
cdm = box_offset + np.random.random_sample(3) * box
axis = np.random.random_sample(3)
axis /= np.sqrt(np.dot(axis, axis))
axis /= np.sqrt(np.dot(axis, axis))
newpositions, newa1s, newa3s = generate_strand(length, \
sequence=seq, dir=axis, start_pos=cdm, double=False)
sequence=seq, dir=axis, start_pos=cdm, double=False)
print >> sys.stdout, "## Trying %i" % (i)
end = timer()
print >> sys.stdout, "## Added single strand of %i bases (line %i/%i) in %.2fs, now at %i/%i" % \
(length, i, nlines, end-start,len(positions), nnucl)
end = timer()
print( "## Added single strand of %i bases (line %i/%i) in %.2fs, now at %i/%i" % \
(length, i, nlines, end-start,len(positions), nnucl), file=sys.stdout)
i += 1
# sanity check
if not len(positions) == nnucl:
print len(positions), nnucl
print( len(positions), nnucl )
raise AssertionError
out.write('# LAMMPS data file\n')
@ -580,44 +580,41 @@ def read_strands(filename):
out.write('Atoms\n')
out.write('\n')
for i in xrange(nnucl):
out.write('%d %d %22.15le %22.15le %22.15le %d 1 1\n' \
% (i+1, basetype[i], \
positions[i][0], positions[i][1], positions[i][2], \
strandnum[i]))
for i in range(nnucl):
out.write('%d %d %22.15le %22.15le %22.15le %d 1 1\n' \
% (i+1, basetype[i], positions[i][0], positions[i][1], positions[i][2], strandnum[i]))
out.write('\n')
out.write('# Atom-ID, translational, rotational velocity\n')
out.write('Velocities\n')
out.write('\n')
for i in xrange(nnucl):
out.write("%d %22.15le %22.15le %22.15le %22.15le %22.15le %22.15le\n" \
% (i+1,0.0,0.0,0.0,0.0,0.0,0.0))
for i in range(nnucl):
out.write("%d %22.15le %22.15le %22.15le %22.15le %22.15le %22.15le\n" \
% (i+1,0.0,0.0,0.0,0.0,0.0,0.0))
out.write('\n')
out.write('# Atom-ID, shape, quaternion\n')
out.write('Ellipsoids\n')
out.write('\n')
for i in xrange(nnucl):
out.write(\
"%d %22.15le %22.15le %22.15le %22.15le %22.15le %22.15le %22.15le\n" \
% (i+1,1.1739845031423408,1.1739845031423408,1.1739845031423408, \
quaternions[i][0],quaternions[i][1], quaternions[i][2],quaternions[i][3]))
for i in range(nnucl):
out.write("%d %22.15le %22.15le %22.15le %22.15le %22.15le %22.15le %22.15le\n" \
% (i+1,1.1739845031423408,1.1739845031423408,1.1739845031423408, \
quaternions[i][0],quaternions[i][1], quaternions[i][2],quaternions[i][3]))
out.write('\n')
out.write('# Bond topology\n')
out.write('Bonds\n')
out.write('\n')
for i in xrange(nbonds):
out.write("%d %d %d %d\n" % (i+1,1,bonds[i][0],bonds[i][1]))
for i in range(nbonds):
out.write("%d %d %d %d\n" % (i+1,1,bonds[i][0],bonds[i][1]))
out.close()
print >> sys.stdout, "## Wrote data to 'data.oxdna'"
print >> sys.stdout, "## DONE"
print("## Wrote data to 'data.oxdna'", file=sys.stdout)
print("## DONE", file=sys.stdout)
# call the above main() function, which executes the program
read_strands (infile)
@ -627,4 +624,6 @@ runtime = end_time-start_time
hours = runtime/3600
minutes = (runtime-np.rint(hours)*3600)/60
seconds = (runtime-np.rint(hours)*3600-np.rint(minutes)*60)%60
print >> sys.stdout, "## Total runtime %ih:%im:%.2fs" % (hours,minutes,seconds)
print( "## Total runtime %ih:%im:%.2fs" % (hours,minutes,seconds), file=sys.stdout)

75
examples/PACKAGES/cgdna/util/generate_simple.py
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@ -1,5 +1,8 @@
# Setup tool for oxDNA input in LAMMPS format.
# for python2/3 compatibility
from __future__ import print_function
import math,numpy as np,sys,os
# system size
@ -250,59 +253,59 @@ def duplex_array():
qrot3=math.sin(0.5*twist)
for letter in strand[2]:
temp1=[]
temp2=[]
temp1=[]
temp2=[]
temp1.append(nt2num[letter])
temp2.append(compnt2num[letter])
temp1.append(nt2num[letter])
temp2.append(compnt2num[letter])
temp1.append([posx1,posy1,posz1])
temp2.append([posx2,posy2,posz2])
temp1.append([posx1,posy1,posz1])
temp2.append([posx2,posy2,posz2])
vel=[0,0,0,0,0,0]
temp1.append(vel)
temp2.append(vel)
vel=[0,0,0,0,0,0]
temp1.append(vel)
temp2.append(vel)
temp1.append(shape)
temp2.append(shape)
temp1.append(shape)
temp2.append(shape)
temp1.append(quat1)
temp2.append(quat2)
temp1.append(quat1)
temp2.append(quat2)
quat1_0 = quat1[0]*qrot0 - quat1[1]*qrot1 - quat1[2]*qrot2 - quat1[3]*qrot3
quat1_1 = quat1[0]*qrot1 + quat1[1]*qrot0 + quat1[2]*qrot3 - quat1[3]*qrot2
quat1_2 = quat1[0]*qrot2 + quat1[2]*qrot0 + quat1[3]*qrot1 - quat1[1]*qrot3
quat1_3 = quat1[0]*qrot3 + quat1[3]*qrot0 + quat1[1]*qrot2 + quat1[2]*qrot1
quat1_0 = quat1[0]*qrot0 - quat1[1]*qrot1 - quat1[2]*qrot2 - quat1[3]*qrot3
quat1_1 = quat1[0]*qrot1 + quat1[1]*qrot0 + quat1[2]*qrot3 - quat1[3]*qrot2
quat1_2 = quat1[0]*qrot2 + quat1[2]*qrot0 + quat1[3]*qrot1 - quat1[1]*qrot3
quat1_3 = quat1[0]*qrot3 + quat1[3]*qrot0 + quat1[1]*qrot2 + quat1[2]*qrot1
quat1 = [quat1_0,quat1_1,quat1_2,quat1_3]
quat1 = [quat1_0,quat1_1,quat1_2,quat1_3]
posx1=axisx - dcomh*(quat1[0]**2+quat1[1]**2-quat1[2]**2-quat1[3]**2)
posy1=axisy - dcomh*(2*(quat1[1]*quat1[2]+quat1[0]*quat1[3]))
posz1=posz1+risez
posx1=axisx - dcomh*(quat1[0]**2+quat1[1]**2-quat1[2]**2-quat1[3]**2)
posy1=axisy - dcomh*(2*(quat1[1]*quat1[2]+quat1[0]*quat1[3]))
posz1=posz1+risez
quat2_0 = quat2[0]*qrot0 - quat2[1]*qrot1 - quat2[2]*qrot2 + quat2[3]*qrot3
quat2_1 = quat2[0]*qrot1 + quat2[1]*qrot0 - quat2[2]*qrot3 - quat2[3]*qrot2
quat2_2 = quat2[0]*qrot2 + quat2[2]*qrot0 + quat2[3]*qrot1 + quat2[1]*qrot3
quat2_3 =-quat2[0]*qrot3 + quat2[3]*qrot0 + quat2[1]*qrot2 + quat2[2]*qrot1
quat2_0 = quat2[0]*qrot0 - quat2[1]*qrot1 - quat2[2]*qrot2 + quat2[3]*qrot3
quat2_1 = quat2[0]*qrot1 + quat2[1]*qrot0 - quat2[2]*qrot3 - quat2[3]*qrot2
quat2_2 = quat2[0]*qrot2 + quat2[2]*qrot0 + quat2[3]*qrot1 + quat2[1]*qrot3
quat2_3 =-quat2[0]*qrot3 + quat2[3]*qrot0 + quat2[1]*qrot2 + quat2[2]*qrot1
quat2 = [quat2_0,quat2_1,quat2_2,quat2_3]
quat2 = [quat2_0,quat2_1,quat2_2,quat2_3]
posx2=axisx + dcomh*(quat1[0]**2+quat1[1]**2-quat1[2]**2-quat1[3]**2)
posy2=axisy + dcomh*(2*(quat1[1]*quat1[2]+quat1[0]*quat1[3]))
posz2=posz1
posx2=axisx + dcomh*(quat1[0]**2+quat1[1]**2-quat1[2]**2-quat1[3]**2)
posy2=axisy + dcomh*(2*(quat1[1]*quat1[2]+quat1[0]*quat1[3]))
posz2=posz1
if (len(nucleotide)+1 > strandstart):
topology.append([1,len(nucleotide),len(nucleotide)+1])
comptopo.append([1,len(nucleotide)+len(strand[2]),len(nucleotide)+len(strand[2])+1])
if (len(nucleotide)+1 > strandstart):
topology.append([1,len(nucleotide),len(nucleotide)+1])
comptopo.append([1,len(nucleotide)+len(strand[2]),len(nucleotide)+len(strand[2])+1])
nucleotide.append(temp1)
compstrand.append(temp2)
nucleotide.append(temp1)
compstrand.append(temp2)
for ib in range(len(compstrand)):
nucleotide.append(compstrand[len(compstrand)-1-ib])
nucleotide.append(compstrand[len(compstrand)-1-ib])
for ib in range(len(comptopo)):
topology.append(comptopo[ib])
topology.append(comptopo[ib])
return

2
examples/PACKAGES/reaction/create_atoms_polystyrene/in.grow_styrene
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@ -40,7 +40,7 @@ fix 1 statted_grp_REACT nvt temp $T $T 100
fix 4 bond_react_MASTER_group temp/rescale 1 $T $T 1 1
thermo_style custom step temp press density f_myrxns[1]
thermo_style custom step temp press density f_myrxns[*]
thermo 100

4
examples/PACKAGES/reaction/nylon,6-6_melt/in.large_nylon_melt
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@ -26,7 +26,7 @@ read_data large_nylon_melt.data.gz &
extra/angle/per/atom 15 &
extra/dihedral/per/atom 15 &
extra/improper/per/atom 25 &
extra/special/per/atom 25
extra/special/per/atom 25
velocity all create 800.0 4928459 dist gaussian
@ -50,7 +50,7 @@ fix 1 statted_grp_REACT nvt temp 800 800 100
# you can use the internally created 'bond_react_MASTER_group', like so:
# fix 2 bond_react_MASTER_group temp/rescale 1 800 800 10 1
thermo_style custom step temp press density f_myrxns[1] f_myrxns[2] # cumulative reaction counts
thermo_style custom step temp press density f_myrxns[*] # cumulative reaction counts
# restart 100 restart1 restart2

5
examples/PACKAGES/reaction/tiny_epoxy/in.tiny_epoxy.stabilized
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@ -20,7 +20,8 @@ improper_style class2
special_bonds lj/coul 0 0 1
pair_modify tail yes mix sixthpower
read_data tiny_epoxy.data
read_data tiny_epoxy.data &
extra/special/per/atom 25
velocity all create 300.0 4928459 dist gaussian
@ -44,7 +45,7 @@ fix rxns all bond/react stabilization yes statted_grp .03 &
fix 1 statted_grp_REACT nvt temp 300 300 100
thermo_style custom step temp f_rxns[1] f_rxns[2] f_rxns[3] f_rxns[4]
thermo_style custom step temp f_rxns[*]
run 2000

2
examples/PACKAGES/reaction/tiny_nylon/in.tiny_nylon.stabilized
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@ -50,7 +50,7 @@ fix 1 statted_grp_REACT nvt temp 300 300 100
# by using the internally-created 'bond_react_MASTER_group', like so:
fix 4 bond_react_MASTER_group temp/rescale 1 300 300 10 1
thermo_style custom step temp press density f_myrxns[1] f_myrxns[2]
thermo_style custom step temp press density f_myrxns[*]
# restart 100 restart1 restart2

2
examples/PACKAGES/reaction/tiny_nylon/in.tiny_nylon.stabilized_variable_probability
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@ -54,7 +54,7 @@ fix 1 statted_grp_REACT nvt temp 300 300 100
# by using the internally-created 'bond_react_MASTER_group', like so:
fix 4 bond_react_MASTER_group temp/rescale 1 300 300 10 1
thermo_style custom step temp press density v_prob1 v_prob2 f_myrxns[1] f_myrxns[2]
thermo_style custom step temp press density v_prob1 v_prob2 f_myrxns[*]
# restart 100 restart1 restart2

2
examples/PACKAGES/reaction/tiny_nylon/in.tiny_nylon.unstabilized
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@ -47,7 +47,7 @@ fix myrxns all bond/react stabilization no &
fix 1 all nve/limit .03
thermo_style custom step temp press density f_myrxns[1] f_myrxns[2]
thermo_style custom step temp press density f_myrxns[*]
# restart 100 restart1 restart2

2
examples/PACKAGES/reaction/tiny_polystyrene/in.tiny_polystyrene.stabilized
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@ -51,7 +51,7 @@ fix 1 statted_grp_REACT nvt temp $T $T 100
fix 4 bond_react_MASTER_group temp/rescale 1 $T $T 1 1
thermo_style custom step temp press density f_rxn1[1] f_rxn1[2] f_rxn1[3]
thermo_style custom step temp press density f_rxn1[*]
run 10000