structure saas with tools
This commit is contained in:
166
.venv/lib/python3.10/site-packages/shapely/geometry/point.py
Normal file
166
.venv/lib/python3.10/site-packages/shapely/geometry/point.py
Normal file
@@ -0,0 +1,166 @@
|
||||
"""Points and related utilities."""
|
||||
|
||||
import numpy as np
|
||||
|
||||
import shapely
|
||||
from shapely.errors import DimensionError
|
||||
from shapely.geometry.base import BaseGeometry
|
||||
|
||||
__all__ = ["Point"]
|
||||
|
||||
|
||||
class Point(BaseGeometry):
|
||||
"""A geometry type that represents a single coordinate.
|
||||
|
||||
Each coordinate has x, y and possibly z and/or m values.
|
||||
|
||||
A point is a zero-dimensional feature and has zero length and zero area.
|
||||
|
||||
Parameters
|
||||
----------
|
||||
args : float, or sequence of floats
|
||||
The coordinates can either be passed as a single parameter, or as
|
||||
individual float values using multiple parameters:
|
||||
|
||||
1) 1 parameter: a sequence or array-like of with 2 or 3 values.
|
||||
2) 2 or 3 parameters (float): x, y, and possibly z.
|
||||
|
||||
Attributes
|
||||
----------
|
||||
x, y, z, m : float
|
||||
Coordinate values
|
||||
|
||||
Examples
|
||||
--------
|
||||
Constructing the Point using separate parameters for x and y:
|
||||
|
||||
>>> from shapely import Point
|
||||
>>> p = Point(1.0, -1.0)
|
||||
|
||||
Constructing the Point using a list of x, y coordinates:
|
||||
|
||||
>>> p = Point([1.0, -1.0])
|
||||
>>> print(p)
|
||||
POINT (1 -1)
|
||||
>>> p.y
|
||||
-1.0
|
||||
>>> p.x
|
||||
1.0
|
||||
|
||||
"""
|
||||
|
||||
__slots__ = []
|
||||
|
||||
def __new__(self, *args):
|
||||
"""Create a new Point geometry."""
|
||||
if len(args) == 0:
|
||||
# empty geometry
|
||||
# TODO better constructor
|
||||
return shapely.from_wkt("POINT EMPTY")
|
||||
elif len(args) > 3:
|
||||
raise TypeError(f"Point() takes at most 3 arguments ({len(args)} given)")
|
||||
elif len(args) == 1:
|
||||
coords = args[0]
|
||||
if isinstance(coords, Point):
|
||||
return coords
|
||||
|
||||
# Accept either (x, y) or [(x, y)]
|
||||
if not hasattr(coords, "__getitem__"): # generators
|
||||
coords = list(coords)
|
||||
coords = np.asarray(coords).squeeze()
|
||||
else:
|
||||
# 2 or 3 args
|
||||
coords = np.array(args).squeeze()
|
||||
|
||||
if coords.ndim > 1:
|
||||
raise ValueError(
|
||||
f"Point() takes only scalar or 1-size vector arguments, got {args}"
|
||||
)
|
||||
if not np.issubdtype(coords.dtype, np.number):
|
||||
coords = [float(c) for c in coords]
|
||||
geom = shapely.points(coords)
|
||||
if not isinstance(geom, Point):
|
||||
raise ValueError("Invalid values passed to Point constructor")
|
||||
return geom
|
||||
|
||||
# Coordinate getters and setters
|
||||
|
||||
@property
|
||||
def x(self):
|
||||
"""Return x coordinate."""
|
||||
return float(shapely.get_x(self))
|
||||
|
||||
@property
|
||||
def y(self):
|
||||
"""Return y coordinate."""
|
||||
return float(shapely.get_y(self))
|
||||
|
||||
@property
|
||||
def z(self):
|
||||
"""Return z coordinate."""
|
||||
z = shapely.get_z(self)
|
||||
if np.isnan(z) and not shapely.has_z(self):
|
||||
raise DimensionError("This point has no z coordinate.")
|
||||
return float(z)
|
||||
|
||||
@property
|
||||
def m(self):
|
||||
"""Return m coordinate.
|
||||
|
||||
.. versionadded:: 2.1.0
|
||||
Also requires GEOS 3.12.0 or later.
|
||||
"""
|
||||
if not shapely.has_m(self):
|
||||
raise DimensionError("This point has no m coordinate.")
|
||||
return float(shapely.get_m(self))
|
||||
|
||||
@property
|
||||
def __geo_interface__(self):
|
||||
"""Return a GeoJSON-like mapping of the Point geometry."""
|
||||
coords = self.coords
|
||||
return {"type": "Point", "coordinates": coords[0] if len(coords) > 0 else ()}
|
||||
|
||||
def svg(self, scale_factor=1.0, fill_color=None, opacity=None):
|
||||
"""Return SVG circle element for the Point geometry.
|
||||
|
||||
Parameters
|
||||
----------
|
||||
scale_factor : float
|
||||
Multiplication factor for the SVG circle diameter. Default is 1.
|
||||
fill_color : str, optional
|
||||
Hex string for fill color. Default is to use "#66cc99" if
|
||||
geometry is valid, and "#ff3333" if invalid.
|
||||
opacity : float
|
||||
Float number between 0 and 1 for color opacity. Default value is 0.6
|
||||
|
||||
"""
|
||||
if self.is_empty:
|
||||
return "<g />"
|
||||
if fill_color is None:
|
||||
fill_color = "#66cc99" if self.is_valid else "#ff3333"
|
||||
if opacity is None:
|
||||
opacity = 0.6
|
||||
return (
|
||||
f'<circle cx="{self.x}" cy="{self.y}" r="{3.0 * scale_factor}" '
|
||||
f'stroke="#555555" stroke-width="{1.0 * scale_factor}" fill="{fill_color}" '
|
||||
f'opacity="{opacity}" />'
|
||||
)
|
||||
|
||||
@property
|
||||
def xy(self):
|
||||
"""Separate arrays of X and Y coordinate values.
|
||||
|
||||
Examples
|
||||
--------
|
||||
>>> from shapely import Point
|
||||
>>> x, y = Point(0, 0).xy
|
||||
>>> list(x)
|
||||
[0.0]
|
||||
>>> list(y)
|
||||
[0.0]
|
||||
|
||||
"""
|
||||
return self.coords.xy
|
||||
|
||||
|
||||
shapely.lib.registry[0] = Point
|
||||
Reference in New Issue
Block a user