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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 os
import struct
import time
def dateticks(F):
ticks = struct.unpack('<Q', F.read(8))
#Need to convert this date from .NET
NANOSEC = 10000000
#Number of python tick since 1/1/1 00:00
PTICKS = 62135596800
tripdate = time.gmtime((ticks[0] / NANOSEC) - PTICKS)
return tripdate
def comments(F):
#byte is the comment length
commentlength = struct.unpack('<B', F.read(1))
#print(commentlength)
if commentlength[0] >= 128:
commentlength2 = struct.unpack('<B', F.read(1))
clen = commentlength[0] - 128 + (128 * commentlength2[0])
if commentlength2[0] >= 128:
print('comment is rediculously long, this will break things')
#probably should raise an error here
else:
clen = commentlength[0]
#print(clen)
C = F.read(clen)
return C.decode('utf-8')
def trip(F):
#First 8 (int64) is the date in ticks
tdate = dateticks(F)
#print(time.strftime("%Y.%m.%d", tdate))
comment = comments(F)
#Next 2 bytes (int16) is declination
declination = struct.unpack('<H', F.read(2))
dec = adegrees(declination[0])
return {'date': tdate, 'comment': comment, 'dec': dec}
def distmm(pnt):
'''Points in mm, convert to metres'''
return float(pnt) / 1000
def adegrees(angle):
'''convert angle from internal units to degrees'''
return (360 * float(angle) / 65536)
def roll(angle):
'''convert angle from internal units to degrees'''
return (360 * float(angle) / 256)
def shot(F):
thline = {'from': station(F)}
thline['to'] = station(F)
Dist = struct.unpack('<L', F.read(4))
thline['tape'] = distmm(Dist[0])
azimuth = struct.unpack('<H', F.read(2))
thline['compass'] = adegrees(azimuth[0])
inclination = struct.unpack('<h', F.read(2))
thline['clino'] = adegrees(inclination[0])
flags = struct.unpack('<B', F.read(1))
#Roll of the DistoX on taking reading can be ignored
#Internal angle interger 0-256
#F.read(1)
rawroll = struct.unpack('<B', F.read(1))
thline['rollangle'] = roll(rawroll[0])
tripindex = struct.unpack('<h', F.read(2))
thline['trip'] = tripindex[0]
#bit 1 of flags is flip (left or right)
#bit 2 of flags indicates a comment
if (flags[0] & 0b00000001) == 0b000000001:
thline['direction'] = '<'
else:
thline['direction'] = '>'
if (flags[0] & 0b00000010) == 0b000000010:
thline['comment'] = comments(F)
return thline
def reference(F):
#Totally untested
stnid = station(F)
east = struct.unpack('<Q', F.read(8))
west = struct.unpack('<Q', F.read(8))
altitude = struct.unpack('<L', F.read(4))
comment = comments(F)
return [stnid, distmm(east[0]), distmm(west[0]),
distmm(altitude[0]), comment]
def Point(F):
x = struct.unpack('<l', F.read(4))
y = struct.unpack('<l', F.read(4))
#original y is screen coordinates from the top
coor = {'x': distmm(x[0]), 'y': (-1 * distmm(y[0]))}
#print(coor)
return coor
def Polygon(F):
A = struct.unpack('<L', F.read(4))
#print('points ', A[0])
poly = []
z = 1
while z <= A[0]:
poly.append(Point(F))
z += 1
Colour = struct.unpack('<B', F.read(1))
Colours = ('black', 'gray', 'brown', 'blue', 'red', 'green', 'orange')
XVIpoly = {}
XVIpoly['colour'] = Colours[Colour[0] - 1]
templist = []
for p in poly:
templist.append(p)
XVIpoly['coord'] = templist
return XVIpoly
def station(F):
#id's split into major.decimal(minor)
idd = struct.unpack('<H', F.read(2))
idm = struct.unpack('<H', F.read(2))
#Turn stn into string, andnulls into -
if idm[0] == 32768:
if idd[0] == 0:
stnid = "-"
else:
stnid = str(idd[0] - 1)
else:
stnid = str(idm[0]) + "." + str(idd[0])
return stnid
def xsection(F):
pnt = Point(F)
stn = station(F)
#Need to look up the coordinate of the station
d = struct.unpack('<l', F.read(4))
direction = d[0]
#-1: horizontal, >=0; projection azimuth (internal angle units)
if direction != -1:
direction = adegrees(direction)
#print(pnt['x'], pnt['y'], stn, direction)
return [pnt['x'], pnt['y'], stn, direction]
def mapping(F):
"""centrepoint and scale of a map screen"""
#not used by therion import
F.read(12)
## X = struct.unpack('<L', F.read(4))
## Y = struct.unpack('<L', F.read(4))
## Scale = struct.unpack('<L', F.read(4))
## print(X[0], Y[0], Scale[0])
return
def drawing(F):
mapping(F)
polys = []
xsec = []
element = struct.unpack('<B', F.read(1))
while element[0] != 0:
if element[0] == 1:
#1 is a standard line
polys.append(Polygon(F))
elif element[0] == 3:
#3 is location and orientation of a xsection
xsec.append(xsection(F))
else:
print('undefined object number: ', element[0])
element = struct.unpack('<B', F.read(1))
return {'polys': polys, 'xsec': xsec}
def fsection(F, section):
#Next 4 Bytes (Int32) is the number times repeated
length = struct.unpack('<L', F.read(4))
# print(length[0])
if length[0] != 0:
A = []
x = 1
while x <= length[0]:
A.append(section(F))
x += 1
return A
else:
return
def readfile(pockettoponame, dooutline=True, dosideview=True):
with open(pockettoponame, "rb") as tfile:
#First 3 bytes should read Top
if tfile.read(3) == b'Top':
#Next Byte should be the version number
version = struct.unpack('B', tfile.read(1))
print('We have a top file version ' + str(version[0]))
print('Reading Trips')
trips = fsection(tfile, trip)
print('Reading Shots')
shots = fsection(tfile, shot)
print('Reading Reference points')
references = fsection(tfile, reference)
print('Reading Map scales')
mapping(tfile)
print('Reading the shot data')
if dooutline | dosideview:
outline = drawing(tfile)
print('Reading the plan (outline)')
# print(trips)
if dosideview:
sideview = drawing(tfile)
print('Reading elevation (sideview)')
return {'trips': trips, 'shots': shots, 'ref': references,
'outline': outline, 'sideview': sideview}
return {'trips': trips, 'shots': shots, 'ref': references, 'outline': outline}
return {'trips': trips, 'shots': shots, 'ref': references}
else:
#need to raise an error here really
print('Not a top file')
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