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gis: provenance: measure module is released under BSD license, assent given by Robert Coup in email correspondence dated 7/25/2007; math imports not used, and ensured that default unit is string when passed in.

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git-svn-id: http://code.djangoproject.com/svn/django/branches/gis@5772 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Justin Bronn 2007-07-28 18:51:47 +00:00
parent a2c4f2f61e
commit 357ef5d975
1 changed files with 31 additions and 5 deletions
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36
django/contrib/gis/measure.py
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@ -1,14 +1,40 @@
# Copyright (c) 2007, Robert Coup <robert.coup@onetrackmind.co.nz>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# 3. Neither the name of Distance nor the names of its contributors may be used
# to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
"""
Distance and Area objects to allow for sensible and convienient calculation
and conversions.
Author: Robert Coup
Inspired by GeoPy (http://exogen.case.edu/projects/geopy/)
and Geoff Biggs' PhD work on dimensioned units for robotics.
Copyright (c) 2007, Robert Coup <robert.coup@onetrackmind.co.nz>
"""
from math import *
from decimal import Decimal
class Distance(object):
@ -32,7 +58,7 @@ class Distance(object):
else:
raise AttributeError("Unknown unit type: " + unit)
if default_unit:
if default_unit and isinstance(default_unit, str):
self._default_unit = default_unit
def __getattr__(self, name):