25 lines
677 B
Python
25 lines
677 B
Python
|
"""Linear referencing
|
||
|
|
"""
|
||
|
|
|
||
|
|
from shapely.topology import Delegating
|
||
|
|
|
||
|
|
|
||
|
|
class LinearRefBase(Delegating):
|
||
|
|
def _validate_line(self, ob):
|
||
|
|
super(LinearRefBase, self)._validate(ob)
|
||
|
|
if not ob.geom_type in ['LinearRing', 'LineString', 'MultiLineString']:
|
||
|
|
raise TypeError("Only linear types support this operation")
|
||
|
|
|
||
|
|
class ProjectOp(LinearRefBase):
|
||
|
|
def __call__(self, this, other):
|
||
|
|
self._validate_line(this)
|
||
|
|
self._validate(other)
|
||
|
|
return self.fn(this._geom, other._geom)
|
||
|
|
|
||
|
|
class InterpolateOp(LinearRefBase):
|
||
|
|
def __call__(self, this, distance):
|
||
|
|
self._validate_line(this)
|
||
|
|
return self.fn(this._geom, distance)
|
||
|
|
|
||
|
|
|