def fromWKT(self, s):
""" Initialise from a WKT string of the form 'BOX(x y,x y)'
This syntax is returned by the extent() command in postgis.
"""
try:
# skip 'BOX(' and ')'
s = s[4:]
s = s[:-1]
# match
import re
f = "[-+]?(\d+(\.\d*)?|\d*\.\d+)([eE][-+]?\d+)?"
e = r"(?P<x1>%s) (?P<y1>%s)\,(?P<x2>%s) (?P<y2>%s)" % (f, f, f, f)
points = re.match(e, s).groupdict()
# print points
# set matching results
ll = pointFromValues(float(points['x1']), float(points['y1']))
ur = pointFromValues(float(points['x2']), float(points['y2']))
except:
raise Exception("Could not parse '%s'" % s) # recast
self._setUpperRight(ur)
self._setLowerLeft(ll)
self._normaliseCornerCoords()
def fromWKT(self, s):
""" Initialise from a WKT string of the form 'BOX(x y,x y)'
This syntax is returned by the extent() command in postgis.
"""
try:
# skip 'BOX(' and ')'
s = s[4:]
s = s[:-1]
# match
import re
f = "[-+]?(\d+(\.\d*)?|\d*\.\d+)([eE][-+]?\d+)?"
e = r"(?P<x1>%s) (?P<y1>%s)\,(?P<x2>%s) (?P<y2>%s)" %(f,f,f,f)
points = re.match(e,s).groupdict()
# print points
# set matching results
ll = pointFromValues( float(points['x1']),float(points['y1']) )
ur = pointFromValues( float(points['x2']),float(points['y2']) )
except:
raise Exception("Could not parse '%s'" %s) # recast
self._setUpperRight(ur)
self._setLowerLeft(ll)
self._normaliseCornerCoords()
def _normaliseCornerCoords(self):
#print self._upper_right
xr = self._upper_right.getX()
xl = self._lower_left.getX()
yu = self._upper_right.getY()
yl = self._lower_left.getY()
if xl > xr and yl > yu:
self._upper_right = pointFromValues(xl, yl)
self._lower_left = pointFromValues(xr, yu)
elif xl > xr:
self._upper_right = pointFromValues(xl, yu)
self._lower_left = pointFromValues(xr, yl)
elif yl > yu:
self._upper_right = pointFromValues(xr, yl)
self._lower_left = pointFromValues(xl, yu)
def _normaliseCornerCoords(self):
#print self._upper_right
xr = self._upper_right.getX()
xl = self._lower_left.getX()
yu = self._upper_right.getY()
yl = self._lower_left.getY()
if xl>xr and yl>yu:
self._upper_right = pointFromValues(xl,yl)
self._lower_left = pointFromValues(xr,yu)
elif xl>xr:
self._upper_right = pointFromValues(xl,yu)
self._lower_left = pointFromValues(xr,yl)
elif yl>yu:
self._upper_right = pointFromValues(xr,yl)
self._lower_left = pointFromValues(xl,yu)
