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fixed indentations and ported python 2 code to python 3

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This commit is contained in:
alphataubio
2024-01-12 18:19:50 -05:00
parent 7ca2dcac62
commit 5b05112aab
2 changed files with 216 additions and 221 deletions
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313
examples/PACKAGES/cgdna/util/generate.py
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@ -33,7 +33,7 @@ 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)
"""
@ -45,8 +45,8 @@ 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 +57,7 @@ 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
@ -135,25 +134,25 @@ 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])
@ -174,57 +173,57 @@ def add_strands (mynewpositions, mynewa1s, mynewa3s):
# 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 +236,10 @@ 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
@ -295,30 +294,29 @@ 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
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)
@ -339,32 +337,32 @@ def generate_strand(bp, sequence=None, start_pos=np.array([0, 0, 0]), \
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
rcdm = rb - CM_CENTER_DS * a1
# append to newpositions
mynewpositions.append(rcdm)
mynewa1s.append(a1)
mynewa3s.append(a3)
# 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 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)
@ -391,7 +389,7 @@ 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
@ -406,28 +404,27 @@ 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()
@ -441,44 +438,44 @@ def read_strands(filename):
# skip empty lines
if len(line) == 0:
i += 1
continue
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
for b in range(length-1):
bondpair = [noffset + b, noffset + b + 1]
bonds.append(bondpair)
noffset += length
print >> sys.stdout, "## Created duplex of %i bases" % (2*length)
print( "## Created duplex of %i bases" % (2*length), file=sys.stdout)
# 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
@ -486,69 +483,68 @@ def read_strands(filename):
axis /= np.sqrt(np.dot(axis, axis))
# use the generate function defined above to create
# the position and orientation vector of the strand
# 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
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 +576,41 @@ 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 +620,6 @@ 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)

72
examples/PACKAGES/cgdna/util/generate_simple.py
View File

@ -250,59 +250,59 @@ 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