79 lines
2.9 KiB
Python
79 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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from re import compile as re_compile
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from re import match
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from decimal import Decimal, Context, getcontext
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from datetime import date, time, datetime, timedelta
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from os.path import join, dirname
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from os.path import exists as path_exists
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from os import mkdir
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from sys import maxint
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from trac.util import Ranges
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from trac.wiki import WikiPage, WikiSystem
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from trac.util.datefmt import utc, to_timestamp, localtz, format_time, get_timezone, timezone
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from PIL import Image, ImageDraw, ImageFont
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__all__ = ["validate_dd_coordinates", "validate_dms_coordinates", "convert_dms_2_dd", "convert_dd_2_dms"]
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class ValidationError(ValueError):
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def __str__(self):
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return "ValidationError: value out of bounds!"
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def validate_dms_coordinates(value):
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mytest=re_compile(u"(N|S)(\d{1,2})°(\d{1,2})'(\d{1,2}\.\d{1,5})\" (E|W)(\d{1,3})°(\d{1,2})'(\d{1,2}\.\d{1,5})\"$")
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m = mytest.match(value)
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if not m:
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raise ValueError(u"validate_rendezvous(): coordinates have wrong format:")
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groups = m.groups()
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if 0 > groups[1] > 90.0:
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raise ValueError(u"validate_rendezvous(): lat not valid:")
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if 0 > groups[5] > 180.0:
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raise ValueError(u"validate_rendezvous(): lon not valid:")
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return groups
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def validate_dd_coordinates(value):
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mytest=re_compile(u"(-?\d{1,3}\.\d{1,8}),(-?\d{1,3}\.\d{1,8})$")
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m = mytest.match(value)
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if not m:
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raise ValueError(u"validate_rendezvous(): coordinates have wrong format:")
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lat, lon = m.groups()
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if 0 > lat > 90.0:
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raise ValueError(u"validate_rendezvous(): lat not valid:")
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if 0 > lon > 180.0:
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raise ValueError(u"validate_rendezvous(): lon not valid:")
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return lat, lon
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def convert_dms_2_dd(ns,a,b,c,ew,d,e,f):
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getcontext().prec = 20
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r1 = Decimal(a) + Decimal(b) / 60 + Decimal(str(c))/3600
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r2 = Decimal(d) + Decimal(e) / 60 + Decimal(str(f))/3600
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if ns == u"S":
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r1=-r1
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if ew == u"W":
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r2=-r2
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a = round(r1,6)
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b = round(r2,6)
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return a, b
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def convert_dd_2_dms(lat, lon):
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def convert(value, pos, neg):
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getcontext().prec = 32
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dValue = Decimal(value)
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tValue = dValue.as_tuple()
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valueDir = tValue[0] and neg or pos
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# extracting full degrees, keep in mind we want an int
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degValue = Decimal((0, tValue[1][:tValue[2]], 0))
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# extracting minutes as int
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tMinValueRemainder = (Decimal((0, tValue[1][tValue[2]:], tValue[2])) * 60).as_tuple()
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minValue = Decimal((0, tMinValueRemainder[1][:tMinValueRemainder[2]], 0))
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# extracting sec, we want the remaining seconds as float
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secValueRemainder = Decimal((0, tMinValueRemainder[1][tMinValueRemainder[2]:], tMinValueRemainder[2]))
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secValueRemainder = secValueRemainder * 60
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return valueDir, int(degValue), int(minValue), float(secValueRemainder)
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return convert(lat, "N", "S") + convert(lon, "E", "W")
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