def lineSegFromSequence(seq):
"""
Return a LineSeg.
(arg seq) is a sequence of the form '((start_x.start_y),(end_x,end_y))'.
"""
l = LineSeg()
l.setStart(pointFromSequence(seq[0]))
l.setEnd(pointFromSequence(seq[1]))
return l
def lineSegFromSequence(seq):
"""
Return a LineSeg.
(arg seq) is a sequence of the form '((start_x.start_y),(end_x,end_y))'.
"""
l = LineSeg()
l.setStart(pointFromSequence(seq[0]))
l.setEnd(pointFromSequence(seq[1]))
return l
def boxFromSequence(seq):
"""
Return a Box.
(arg seq) is a sequence of the form '((x,y),(x1,y1))' where (x,y) is
the upper right corner and (x1,y1) is the lower left corner.
"""
b = Box()
b._setUpperRight(pointFromSequence(seq[0]))
b._setLowerLeft(pointFromSequence(seq[1]))
b._normaliseCornerCoords()
return b
def fromString(self,s):
"""
Initialise the Box from a string.
(arg s) should be of the form '((x,y),(x,y))' where x and y are floating
point numbers.
"""
seq = eval(s,{},{})
self._setUpperRight(pointFromSequence(seq[0]))
self._setLowerLeft(pointFromSequence(seq[1]))
self._normaliseCornerCoords()
def fromString(self, s):
"""
Initialise the Box from a string.
(arg s) should be of the form '((x,y),(x,y))' where x and y are floating
point numbers.
"""
seq = eval(s, {}, {})
self._setUpperRight(pointFromSequence(seq[0]))
self._setLowerLeft(pointFromSequence(seq[1]))
self._normaliseCornerCoords()
def boxFromSequence(seq):
"""
Return a Box.
(arg seq) is a sequence of the form '((x,y),(x1,y1))' where (x,y) is
the upper right corner and (x1,y1) is the lower left corner.
"""
b = Box()
b._setUpperRight(pointFromSequence(seq[0]))
b._setLowerLeft(pointFromSequence(seq[1]))
b._normaliseCornerCoords()
return b
def circelFromSequence(seq):
"""
Return a Circle.
(arg seq) is a sequence of the form ((x,y),r) where x,y and r
are floats.
"""
c = Circle()
c.setCentre(pointFromSequence(seq[0]))
c.setRadius(seq[1])
return c
def circelFromSequence(seq):
"""
Return a Circle.
(arg seq) is a sequence of the form ((x,y),r) where x,y and r
are floats.
"""
c = Circle()
c.setCentre(pointFromSequence(seq[0]))
c.setRadius(seq[1])
return c
def polygonFromSequence(seq):
"""
Return a Polygon.
(arg *seq) a sequence of the form ((x,y),...,(x,y)) that make up the Polygon,
where x and y are floats.
"""
poly = Polygon()
for point in seq:
poly.append(pointFromSequence(point))
return poly
def polygonFromSequence(seq):
"""
Return a Polygon.
(arg *seq) a sequence of the form ((x,y),...,(x,y)) that make up the Polygon,
where x and y are floats.
"""
poly = Polygon()
for point in seq:
poly.append(pointFromSequence(point))
return poly
def fromString(self,s):
"""
Initalise the Circle from a string.
(arg s) should be of the form '<(x,y),r>' although this
method will also work with the form '((x,y),r)'.
"""
# circles come out of the db as '<(x,y),r>'
# so we must first convert them to '((x,y),r'
s = s.replace('<','(')
s = s.replace('>',')')
seq = eval(s,{},{})
self.setCentre(pointFromSequence(seq[0]))
self.setRadius(seq[1])
def fromString(self, s):
"""
Initalise the Circle from a string.
(arg s) should be of the form '<(x,y),r>' although this
method will also work with the form '((x,y),r)'.
"""
# circles come out of the db as '<(x,y),r>'
# so we must first convert them to '((x,y),r'
s = s.replace('<', '(')
s = s.replace('>', ')')
seq = eval(s, {}, {})
self.setCentre(pointFromSequence(seq[0]))
self.setRadius(seq[1])
def pathFromSequence(seq):
"""
Return a Path.
(arg *seq) a sequence of the form ((x,y),...,(x,y)) that make up the Path,
where x and y are floats.
NOTE: The Path will be closed by default.
"""
path = Path()
for point in seq:
path.append(pointFromSequence(point))
return path
def pathFromSequence(seq):
"""
Return a Path.
(arg *seq) a sequence of the form ((x,y),...,(x,y)) that make up the Path,
where x and y are floats.
NOTE: The Path will be closed by default.
"""
path = Path()
for point in seq:
path.append(pointFromSequence(point))
return path
def fromString(self, s):
"""
Initialse the Path from a string.
(arg s) is of the form described in
http://www.postgresql.org/docs/7.3/static/datatype-geometric.html
"""
seq = eval(s, {}, {})
self.emptyPointList()
# If it is a tuple PG defines it as closed
# If it is a list PG defines it as open
# not nice but what can you do ?
if type(seq) == types.TupleType:
self.setClosed()
elif type(seq) == types.ListType:
self.setOpen()
else:
raise TypeError, 'Bad initalise string must be a Tuple or a List'
for p in seq:
self.append(pointFromSequence(p))
def fromString(self,s):
"""
Initialse the Path from a string.
(arg s) is of the form described in
http://www.postgresql.org/docs/7.3/static/datatype-geometric.html
"""
seq = eval(s,{},{})
self.emptyPointList()
# If it is a tuple PG defines it as closed
# If it is a list PG defines it as open
# not nice but what can you do ?
if type(seq) == types.TupleType:
self.setClosed()
elif type(seq) == types.ListType:
self.setOpen()
else:
raise TypeError, 'Bad initalise string must be a Tuple or a List'
for p in seq:
self.append(pointFromSequence(p))
def fromString(self,s):
seq = eval(s,{},{})
self.setStart(pointFromSequence(seq[0]))
self.setEnd(pointFromSequence(seq[1]))
def fromString(self, s):
seq = eval(s, {}, {})
self.setStart(pointFromSequence(seq[0]))
self.setEnd(pointFromSequence(seq[1]))
