forked from ladyteam/LADYtools
/
bond_shortcut_by_atom.py
executable file
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/
bond_shortcut_by_atom.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Add atoms into the file with xyz format to shortcut open bonds.
# The additional file with parameters of newly added files is needed in
# the following format each line contains four fields separated by spaces:
# N1 N2 AtomSymbol BondLength
# where N1 and N2 - (integer) is the number of first and second atom in selected bond correspondingly
# AtomSymbol - (symbol) the symbol of atom to add
# BondLength - the length of newly generated bond between new atom and atom N2
#
# Author: Eugene Roginskii
#
import re
from math import sqrt
import sys
import os
import argparse
def strType(var):
try:
if int(var) == float(var):
return 'int'
except:
try:
float(var)
return 'float'
except:
return 'str'
def isNumeric(var):
isnum=strType(var)
if (isnum == 'int' or isnum == 'float'):
return (True)
return(False)
def vlength(a,b,c,t,dist):
return ( sqrt((a*(t-1))**2 + (b*(t-1))**2 + (c*(t-1))**2) - dist )
def main():
parser = argparse.ArgumentParser(description='Shortcut open bonds by atoms')
# parser = OptionParser()
parser.add_argument("-i", "--input", action="store", type=str, dest="data_fn", help="Input data file name")
parser.add_argument("-o", "--output", action="store", type=str, dest="out_fn", default='out.dat', help="Output data file name")
parser.add_argument("-p", "--param", action="store", type=str, dest="param_fn", help="Filename with bonds to shurtcut data")
args = parser.parse_args()
try:
data_fh = open(args.data_fn, 'r')
except IOError:
print "ERROR Couldn't open data file, exiting...\n"
sys.exit(1)
try:
out_fh = open(args.out_fn, 'w')
except IOError:
print "ERROR Couldn't open output file, exiting...\n"
sys.exit(1)
atoms=[]
line=data_fh.readline()
if (strType(line.split()[0])=='int'):
out_fh.write("%6d\n" % int(line.split()[0]))
else:
print('Wrong format of xyz input file. First row should provide number of atoms')
sys.exit(1)
for line in data_fh:
out_fh.write(line)
print(line)
if (len(line.split())<4):
continue
atoms.append([line.split()[0],float(line.split()[1]), float(line.split()[2]), float(line.split()[3])])
try:
param_fh = open(args.param_fn, 'r')
except IOError:
print "ERROR Couldn't open param file, exiting...\n"
sys.exit(1)
nadat=0
for line in param_fh:
if (re.search('^\s*$',line)):
continue
if (re.search('^\s*#',line)):
continue
nadat+=1
if (len(line.split())<4):
print('Not enough data in parameter file for atom %d provided. Ignoring')
continue
pt1=[atoms[int(line.split()[0])-1][i] for i in range(1,4)]
pt2=[atoms[int(line.split()[1])-1][i] for i in range(1,4)]
label=line.split()[2]
dist=float(line.split()[3])
print(pt1,pt2,label,dist)
a=pt2[0]-pt1[0]
b=pt2[1]-pt1[1]
c=pt2[2]-pt1[2]
# m=1000
# step=0
# for t in range(1,300):
# print(vlength(a,b,c,(t/100.0),dist),t)
# if(abs(vlength(a,b,c,(t/100.0),dist))<m):
# step=t
# m=vlength(a,b,c,(t/100.0),dist)
t=dist/sqrt(a**2+b**2+c**2)
bl=sqrt(a**2+b**2+c**2) # Bond length
print(a,b,c)
out_fh.write("%s % 9.7f % 9.7f % 9.7f\n" % (label, pt2[0]+a*t, pt2[1]+b*t, pt2[2]+c*t ))
out_fh.seek(0)
out_fh.write("%6d\n" % (len(atoms)+nadat))
# x0 = [e0, b0, bP, v0] #initial guesses in the same order used in the Murnaghan function
# x0=f.getparam()
# finpars, ier = leastsq(objective, x0, args=(daty,datx)) #this is from scipy
# print("".join("% E " %f for f in finpars))
if __name__ == '__main__':
main()