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#!/usr/bin/python
##
## Copyright (C) 2011-2012 Andrew Atkinson
##
##-------------------------------------------------------------------
## 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/>.
##-------------------------------------------------------------------
import math
#Function bisectors seems not to be used any more
def bisectors(shots):
"""Calculates bisectors of the stns, using 2 legs only"""
stn = []
stndir = []
for s in shots:
if s['to'] != '-':
stndir.append([s['from'], s['compass'], True])
stndir.append([s['to'], s['compass'], False])
stn.append(s['from'])
stn.append(s['to'])
else:
continue
# Unique list of stations
stnbisectors = {}
for s in set(stn):
station = [a for a in stndir if a[0] == s]
if len(station) == 1:
bisector = station[0][1] + 90
## if station[0][5] == '>':
## d = '>'
## else:
## d = '<'
## if [station[0][1] >180:
## sta -= 180
## else:
## sta += 180
## stnbisectors[s] = [station[0][1], station[0][5],
## sta+180, d]
else:
for st in station:
# Reverse bearing if reading towards station
if not st[2]:
if st[1] > 180:
st[1] -= 180
else:
st[1] += 180
# Only take first 2 stations
bisector = (station[0][1] + station[1][1]) / 2
stnbisectors[s] = bisector
## stnbisectors[s] = [station[0][1], station[0][5],
## station[[0][1], station[0][5]]
return stnbisectors
#planlength * math.sin((args[0] - D['compass']) * math.pi/180)
def elevsplays(stn, comp, direction, stns):
"""Calculates the sideview splays in the plain of the legs"""
# Get the outgoing/incoming station information
# Bisector should alway to be to the true right of the legs
#print(stn)
station = [a for a in stns if a[0] == stn]
if len(station) == 0:
bisector = 0
print('''You appear to have a station, {!r} not connected to a previous station
Sorry this breaks this script, it might be editable in the top file
Ending'''.format (stn))
pass
elif len(station) == 1:
# For single station take bisector as perpendicular
# Reverse bearing if reading towards station
if not station[0][2]:
if station[0][3] < 180:
station[0][3] += 180
else:
station[0][3] -= 180
if station[0][1]: # Outgoing
bisector = station[0][3] + 90
else:
bisector = station[0][3] - 90
else:
for st in station:
# Reverse bearing if reading towards station
######Not safe FIXME######
if not st[2]:
if st[3] < 180:
st[3] += 180
else:
st[3] -= 180
# Only take first 2 stations
# (Outgoing and Incoming assumed not checked)
bisector = (station[0][3] + station[1][3]) / 2
if ((station[0][3] < station[1][3]) |
((station[0][3] > station[1][3]) &
(station[0][3] - station[1][3] > 180))):
bisector -= 180
return math.sin((bisector - comp) * math.pi / 180)
def RelPos(D, pangle, *args):
"""Works out the plan, elevation and projection x,y relative coordinates"""
#copy accross the station names
A = {}
A['from'] = D['from']
A['to'] = D['to']
planlength = D['tape'] * math.cos(D['clino'] * math.pi / 180)
px = planlength * math.sin(D['compass'] * math.pi / 180)
py = planlength * math.cos(D['compass'] * math.pi / 180)
A['plan'] = (px, py)
ey = D['tape'] * math.sin(D['clino'] * math.pi / 180)
if args:
ex = planlength * elevsplays(D['from'], D['compass'], D['direction'],
args[0])
else:
ex = planlength
# Need to mltiply ex by -1 if direction is left
if D['direction'] == '<':
ex *= -1
A['elev'] = (ex, ey)
A['proj'] = ((planlength * math.cos((pangle + 90 -
D['compass']) * math.pi / 180)), ey)
return A
def xsecsplay(splay, xsec):
'''Splays for xsections'''
#Assumption made: angle of xsec is direction facing)
clino_rad = splay['clino'] * math.pi / 180
planlength = (splay['tape'] * math.cos(clino_rad))
comp_rad = splay['compass'] * math.pi / 180
if xsec[3] == -1:
x = planlength * math.sin(comp_rad)
y = planlength * math.cos(comp_rad)
else:
y = splay['tape'] * math.sin(clino_rad)
angle = (90 + xsec[3] - splay['compass']) * math.pi / 180
x = planlength * (math.cos(angle))
#print(xsec[2], xsec[0], xsec[1], xsec[0]+x, xsec[1]+y)
return [xsec[0], xsec[1], xsec[0] + x, xsec[1] + y]
def relshots(shots, topodata, doplan=True, doelev=True, pangle=0):
"""Calculates the relative positions for the xvi files"""
xsecsplays = {'plan': [], 'elev': []}
xsec = {}
rpos = []
#stnbisectors = None
legdir = []
outgoing = True
incoming = False
fm = True
to = False
startstn = None
if doplan:
xsec['plan'] = topodata['outline']['xsec']
#print(topodata['outline']['xsec'])
if doelev:
xsec['elev'] = topodata['sideview']['xsec']
# For elevation, the bisector of the legs is needed
#- This appears not to be used
#stnbisectors = bisectors(shots)
for ln in shots:
#The first data line should set the zero, zero station
if startstn is None:
startstn = ln['from']
if ln['to'] != '-':
rpos.append(RelPos(ln, pangle))
# Produce a list of incoming/outgoing compass directions
## if ln['tape'] == 0:
## continue
#Set up first leg
if legdir == []:
if ln['from'] == startstn:
legdir.append([ln['from'], outgoing, fm, ln['compass']])
legdir.append([ln['to'], incoming, to, ln['compass']])
else:
legdir.append([ln['to'], outgoing, to, ln['compass']])
legdir.append([ln['from'], incoming, fm, ln['compass']])
#Add on remaining legs
#If station is new it is incoming
else:
if any(ln['to'] == e[0] for e in legdir):
legdir.append([ln['from'], incoming, fm, ln['compass']])
legdir.append([ln['to'], outgoing, to, ln['compass']])
elif any(ln['from'] == e[0] for e in legdir):
legdir.append([ln['to'], incoming, to, ln['compass']])
legdir.append([ln['from'], outgoing, fm, ln['compass']])
else:
print ('''Line {} {} {:6.2f} {:6.2f} {:6.2f} not connected - Missing out for now'''
.format(ln['from'], ln['to'], ln['tape'], ln['compass'], ln['clino']))
#FIXME Orphan: ignored at the moment
pass
for ln in shots:
if ln['to'] == '-':
if doplan and not doelev:
rpos.append(RelPos(ln, pangle))
else:
rpos.append(RelPos(ln, pangle, legdir))
if doplan:
for px in xsec['plan']:
#print(px)
if px[2] == ln['from']:
xsecsplays['plan'].append(xsecsplay(ln, px))
if doelev:
for ex in xsec['elev']:
if ex[2] == ln['from']:
xsecsplays['elev'].append(xsecsplay(ln, ex))
return {'stnpos': rpos, 'xsecsplays': xsecsplays, 'startstn': startstn}
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