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markers.py
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markers.py
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r"""
Functions to handle markers; used by the marker functionality of
`~matplotlib.axes.Axes.plot`, `~matplotlib.axes.Axes.scatter`, and
`~matplotlib.axes.Axes.errorbar`.
All possible markers are defined here:
============================== ====== =========================================
marker symbol description
============================== ====== =========================================
``"."`` |m00| point
``","`` |m01| pixel
``"o"`` |m02| circle
``"v"`` |m03| triangle_down
``"^"`` |m04| triangle_up
``"<"`` |m05| triangle_left
``">"`` |m06| triangle_right
``"1"`` |m07| tri_down
``"2"`` |m08| tri_up
``"3"`` |m09| tri_left
``"4"`` |m10| tri_right
``"8"`` |m11| octagon
``"s"`` |m12| square
``"p"`` |m13| pentagon
``"P"`` |m23| plus (filled)
``"*"`` |m14| star
``"h"`` |m15| hexagon1
``"H"`` |m16| hexagon2
``"+"`` |m17| plus
``"x"`` |m18| x
``"X"`` |m24| x (filled)
``"D"`` |m19| diamond
``"d"`` |m20| thin_diamond
``"|"`` |m21| vline
``"_"`` |m22| hline
``0`` (``TICKLEFT``) |m25| tickleft
``1`` (``TICKRIGHT``) |m26| tickright
``2`` (``TICKUP``) |m27| tickup
``3`` (``TICKDOWN``) |m28| tickdown
``4`` (``CARETLEFT``) |m29| caretleft
``5`` (``CARETRIGHT``) |m30| caretright
``6`` (``CARETUP``) |m31| caretup
``7`` (``CARETDOWN``) |m32| caretdown
``8`` (``CARETLEFTBASE``) |m33| caretleft (centered at base)
``9`` (``CARETRIGHTBASE``) |m34| caretright (centered at base)
``10`` (``CARETUPBASE``) |m35| caretup (centered at base)
``11`` (``CARETDOWNBASE``) |m36| caretdown (centered at base)
``"none"`` or ``"None"`` nothing
``" "`` or ``""`` nothing
``"$...$"`` |m37| Render the string using mathtext.
E.g ``"$f$"`` for marker showing the
letter ``f``.
``verts`` A list of (x, y) pairs used for Path
vertices. The center of the marker is
located at (0, 0) and the size is
normalized, such that the created path
is encapsulated inside the unit cell.
``path`` A `~matplotlib.path.Path` instance.
``(numsides, 0, angle)`` A regular polygon with ``numsides``
sides, rotated by ``angle``.
``(numsides, 1, angle)`` A star-like symbol with ``numsides``
sides, rotated by ``angle``.
``(numsides, 2, angle)`` An asterisk with ``numsides`` sides,
rotated by ``angle``.
============================== ====== =========================================
Note that special symbols can be defined via the
:ref:`STIX math font <mathtext>`,
e.g. ``"$\u266B$"``. For an overview over the STIX font symbols refer to the
`STIX font table <http://www.stixfonts.org/allGlyphs.html>`_.
Also see the :doc:`/gallery/text_labels_and_annotations/stix_fonts_demo`.
Integer numbers from ``0`` to ``11`` create lines and triangles. Those are
equally accessible via capitalized variables, like ``CARETDOWNBASE``.
Hence the following are equivalent::
plt.plot([1, 2, 3], marker=11)
plt.plot([1, 2, 3], marker=matplotlib.markers.CARETDOWNBASE)
Markers join and cap styles can be customized by creating a new instance of
MarkerStyle.
A MarkerStyle can also have a custom `~matplotlib.transforms.Transform`
allowing it to be arbitrarily rotated or offset.
Examples showing the use of markers:
* :doc:`/gallery/lines_bars_and_markers/marker_reference`
* :doc:`/gallery/lines_bars_and_markers/scatter_star_poly`
* :doc:`/gallery/lines_bars_and_markers/multivariate_marker_plot`
.. |m00| image:: /_static/markers/m00.png
.. |m01| image:: /_static/markers/m01.png
.. |m02| image:: /_static/markers/m02.png
.. |m03| image:: /_static/markers/m03.png
.. |m04| image:: /_static/markers/m04.png
.. |m05| image:: /_static/markers/m05.png
.. |m06| image:: /_static/markers/m06.png
.. |m07| image:: /_static/markers/m07.png
.. |m08| image:: /_static/markers/m08.png
.. |m09| image:: /_static/markers/m09.png
.. |m10| image:: /_static/markers/m10.png
.. |m11| image:: /_static/markers/m11.png
.. |m12| image:: /_static/markers/m12.png
.. |m13| image:: /_static/markers/m13.png
.. |m14| image:: /_static/markers/m14.png
.. |m15| image:: /_static/markers/m15.png
.. |m16| image:: /_static/markers/m16.png
.. |m17| image:: /_static/markers/m17.png
.. |m18| image:: /_static/markers/m18.png
.. |m19| image:: /_static/markers/m19.png
.. |m20| image:: /_static/markers/m20.png
.. |m21| image:: /_static/markers/m21.png
.. |m22| image:: /_static/markers/m22.png
.. |m23| image:: /_static/markers/m23.png
.. |m24| image:: /_static/markers/m24.png
.. |m25| image:: /_static/markers/m25.png
.. |m26| image:: /_static/markers/m26.png
.. |m27| image:: /_static/markers/m27.png
.. |m28| image:: /_static/markers/m28.png
.. |m29| image:: /_static/markers/m29.png
.. |m30| image:: /_static/markers/m30.png
.. |m31| image:: /_static/markers/m31.png
.. |m32| image:: /_static/markers/m32.png
.. |m33| image:: /_static/markers/m33.png
.. |m34| image:: /_static/markers/m34.png
.. |m35| image:: /_static/markers/m35.png
.. |m36| image:: /_static/markers/m36.png
.. |m37| image:: /_static/markers/m37.png
"""
import copy
from collections.abc import Sized
import numpy as np
import matplotlib as mpl
from . import _api, cbook
from .path import Path
from .transforms import IdentityTransform, Affine2D
from ._enums import JoinStyle, CapStyle
# special-purpose marker identifiers:
(TICKLEFT, TICKRIGHT, TICKUP, TICKDOWN,
CARETLEFT, CARETRIGHT, CARETUP, CARETDOWN,
CARETLEFTBASE, CARETRIGHTBASE, CARETUPBASE, CARETDOWNBASE) = range(12)
_empty_path = Path(np.empty((0, 2)))
class MarkerStyle:
"""
A class representing marker types.
Instances are immutable. If you need to change anything, create a new
instance.
Attributes
----------
markers : dict
All known markers.
filled_markers : tuple
All known filled markers. This is a subset of *markers*.
fillstyles : tuple
The supported fillstyles.
"""
markers = {
'.': 'point',
',': 'pixel',
'o': 'circle',
'v': 'triangle_down',
'^': 'triangle_up',
'<': 'triangle_left',
'>': 'triangle_right',
'1': 'tri_down',
'2': 'tri_up',
'3': 'tri_left',
'4': 'tri_right',
'8': 'octagon',
's': 'square',
'p': 'pentagon',
'*': 'star',
'h': 'hexagon1',
'H': 'hexagon2',
'+': 'plus',
'x': 'x',
'D': 'diamond',
'd': 'thin_diamond',
'|': 'vline',
'_': 'hline',
'P': 'plus_filled',
'X': 'x_filled',
TICKLEFT: 'tickleft',
TICKRIGHT: 'tickright',
TICKUP: 'tickup',
TICKDOWN: 'tickdown',
CARETLEFT: 'caretleft',
CARETRIGHT: 'caretright',
CARETUP: 'caretup',
CARETDOWN: 'caretdown',
CARETLEFTBASE: 'caretleftbase',
CARETRIGHTBASE: 'caretrightbase',
CARETUPBASE: 'caretupbase',
CARETDOWNBASE: 'caretdownbase',
"None": 'nothing',
"none": 'nothing',
' ': 'nothing',
'': 'nothing'
}
# Just used for informational purposes. is_filled()
# is calculated in the _set_* functions.
filled_markers = (
'.', 'o', 'v', '^', '<', '>', '8', 's', 'p', '*', 'h', 'H', 'D', 'd',
'P', 'X')
fillstyles = ('full', 'left', 'right', 'bottom', 'top', 'none')
_half_fillstyles = ('left', 'right', 'bottom', 'top')
def __init__(self, marker,
fillstyle=None, transform=None, capstyle=None, joinstyle=None):
"""
Parameters
----------
marker : str, array-like, Path, MarkerStyle
- Another instance of `MarkerStyle` copies the details of that *marker*.
- For other possible marker values, see the module docstring
`matplotlib.markers`.
fillstyle : str, default: :rc:`markers.fillstyle`
One of 'full', 'left', 'right', 'bottom', 'top', 'none'.
transform : `~matplotlib.transforms.Transform`, optional
Transform that will be combined with the native transform of the
marker.
capstyle : `.CapStyle` or %(CapStyle)s, optional
Cap style that will override the default cap style of the marker.
joinstyle : `.JoinStyle` or %(JoinStyle)s, optional
Join style that will override the default join style of the marker.
"""
self._marker_function = None
self._user_transform = transform
self._user_capstyle = CapStyle(capstyle) if capstyle is not None else None
self._user_joinstyle = JoinStyle(joinstyle) if joinstyle is not None else None
self._set_fillstyle(fillstyle)
self._set_marker(marker)
def _recache(self):
if self._marker_function is None:
return
self._path = _empty_path
self._transform = IdentityTransform()
self._alt_path = None
self._alt_transform = None
self._snap_threshold = None
self._joinstyle = JoinStyle.round
self._capstyle = self._user_capstyle or CapStyle.butt
# Initial guess: Assume the marker is filled unless the fillstyle is
# set to 'none'. The marker function will override this for unfilled
# markers.
self._filled = self._fillstyle != 'none'
self._marker_function()
def __bool__(self):
return bool(len(self._path.vertices))
def is_filled(self):
return self._filled
def get_fillstyle(self):
return self._fillstyle
def _set_fillstyle(self, fillstyle):
"""
Set the fillstyle.
Parameters
----------
fillstyle : {'full', 'left', 'right', 'bottom', 'top', 'none'}
The part of the marker surface that is colored with
markerfacecolor.
"""
if fillstyle is None:
fillstyle = mpl.rcParams['markers.fillstyle']
_api.check_in_list(self.fillstyles, fillstyle=fillstyle)
self._fillstyle = fillstyle
def get_joinstyle(self):
return self._joinstyle.name
def get_capstyle(self):
return self._capstyle.name
def get_marker(self):
return self._marker
def _set_marker(self, marker):
"""
Set the marker.
Parameters
----------
marker : str, array-like, Path, MarkerStyle
- Another instance of `MarkerStyle` copies the details of that *marker*.
- For other possible marker values see the module docstring
`matplotlib.markers`.
"""
if isinstance(marker, str) and cbook.is_math_text(marker):
self._marker_function = self._set_mathtext_path
elif isinstance(marker, (int, str)) and marker in self.markers:
self._marker_function = getattr(self, '_set_' + self.markers[marker])
elif (isinstance(marker, np.ndarray) and marker.ndim == 2 and
marker.shape[1] == 2):
self._marker_function = self._set_vertices
elif isinstance(marker, Path):
self._marker_function = self._set_path_marker
elif (isinstance(marker, Sized) and len(marker) in (2, 3) and
marker[1] in (0, 1, 2)):
self._marker_function = self._set_tuple_marker
elif isinstance(marker, MarkerStyle):
self.__dict__ = copy.deepcopy(marker.__dict__)
else:
try:
Path(marker)
self._marker_function = self._set_vertices
except ValueError as err:
raise ValueError(
f'Unrecognized marker style {marker!r}') from err
if not isinstance(marker, MarkerStyle):
self._marker = marker
self._recache()
def get_path(self):
"""
Return a `.Path` for the primary part of the marker.
For unfilled markers this is the whole marker, for filled markers,
this is the area to be drawn with *markerfacecolor*.
"""
return self._path
def get_transform(self):
"""
Return the transform to be applied to the `.Path` from
`MarkerStyle.get_path()`.
"""
if self._user_transform is None:
return self._transform.frozen()
else:
return (self._transform + self._user_transform).frozen()
def get_alt_path(self):
"""
Return a `.Path` for the alternate part of the marker.
For unfilled markers, this is *None*; for filled markers, this is the
area to be drawn with *markerfacecoloralt*.
"""
return self._alt_path
def get_alt_transform(self):
"""
Return the transform to be applied to the `.Path` from
`MarkerStyle.get_alt_path()`.
"""
if self._user_transform is None:
return self._alt_transform.frozen()
else:
return (self._alt_transform + self._user_transform).frozen()
def get_snap_threshold(self):
return self._snap_threshold
def get_user_transform(self):
"""Return user supplied part of marker transform."""
if self._user_transform is not None:
return self._user_transform.frozen()
def transformed(self, transform):
"""
Return a new version of this marker with the transform applied.
Parameters
----------
transform : `~matplotlib.transforms.Affine2D`
Transform will be combined with current user supplied transform.
"""
new_marker = MarkerStyle(self)
if new_marker._user_transform is not None:
new_marker._user_transform += transform
else:
new_marker._user_transform = transform
return new_marker
def rotated(self, *, deg=None, rad=None):
"""
Return a new version of this marker rotated by specified angle.
Parameters
----------
deg : float, optional
Rotation angle in degrees.
rad : float, optional
Rotation angle in radians.
.. note:: You must specify exactly one of deg or rad.
"""
if deg is None and rad is None:
raise ValueError('One of deg or rad is required')
if deg is not None and rad is not None:
raise ValueError('Only one of deg and rad can be supplied')
new_marker = MarkerStyle(self)
if new_marker._user_transform is None:
new_marker._user_transform = Affine2D()
if deg is not None:
new_marker._user_transform.rotate_deg(deg)
if rad is not None:
new_marker._user_transform.rotate(rad)
return new_marker
def scaled(self, sx, sy=None):
"""
Return new marker scaled by specified scale factors.
If *sy* is not given, the same scale is applied in both the *x*- and
*y*-directions.
Parameters
----------
sx : float
*X*-direction scaling factor.
sy : float, optional
*Y*-direction scaling factor.
"""
if sy is None:
sy = sx
new_marker = MarkerStyle(self)
_transform = new_marker._user_transform or Affine2D()
new_marker._user_transform = _transform.scale(sx, sy)
return new_marker
def _set_nothing(self):
self._filled = False
def _set_custom_marker(self, path):
rescale = np.max(np.abs(path.vertices)) # max of x's and y's.
self._transform = Affine2D().scale(0.5 / rescale)
self._path = path
def _set_path_marker(self):
self._set_custom_marker(self._marker)
def _set_vertices(self):
self._set_custom_marker(Path(self._marker))
def _set_tuple_marker(self):
marker = self._marker
if len(marker) == 2:
numsides, rotation = marker[0], 0.0
elif len(marker) == 3:
numsides, rotation = marker[0], marker[2]
symstyle = marker[1]
if symstyle == 0:
self._path = Path.unit_regular_polygon(numsides)
self._joinstyle = self._user_joinstyle or JoinStyle.miter
elif symstyle == 1:
self._path = Path.unit_regular_star(numsides)
self._joinstyle = self._user_joinstyle or JoinStyle.bevel
elif symstyle == 2:
self._path = Path.unit_regular_asterisk(numsides)
self._filled = False
self._joinstyle = self._user_joinstyle or JoinStyle.bevel
else:
raise ValueError(f"Unexpected tuple marker: {marker}")
self._transform = Affine2D().scale(0.5).rotate_deg(rotation)
def _set_mathtext_path(self):
"""
Draw mathtext markers '$...$' using `.TextPath` object.
Submitted by tcb
"""
from matplotlib.text import TextPath
# again, the properties could be initialised just once outside
# this function
text = TextPath(xy=(0, 0), s=self.get_marker(),
usetex=mpl.rcParams['text.usetex'])
if len(text.vertices) == 0:
return
bbox = text.get_extents()
max_dim = max(bbox.width, bbox.height)
self._transform = (
Affine2D()
.translate(-bbox.xmin + 0.5 * -bbox.width, -bbox.ymin + 0.5 * -bbox.height)
.scale(1.0 / max_dim))
self._path = text
self._snap = False
def _half_fill(self):
return self.get_fillstyle() in self._half_fillstyles
def _set_circle(self, size=1.0):
self._transform = Affine2D().scale(0.5 * size)
self._snap_threshold = np.inf
if not self._half_fill():
self._path = Path.unit_circle()
else:
self._path = self._alt_path = Path.unit_circle_righthalf()
fs = self.get_fillstyle()
self._transform.rotate_deg(
{'right': 0, 'top': 90, 'left': 180, 'bottom': 270}[fs])
self._alt_transform = self._transform.frozen().rotate_deg(180.)
def _set_point(self):
self._set_circle(size=0.5)
def _set_pixel(self):
self._path = Path.unit_rectangle()
# Ideally, you'd want -0.5, -0.5 here, but then the snapping
# algorithm in the Agg backend will round this to a 2x2
# rectangle from (-1, -1) to (1, 1). By offsetting it
# slightly, we can force it to be (0, 0) to (1, 1), which both
# makes it only be a single pixel and places it correctly
# aligned to 1-width stroking (i.e. the ticks). This hack is
# the best of a number of bad alternatives, mainly because the
# backends are not aware of what marker is actually being used
# beyond just its path data.
self._transform = Affine2D().translate(-0.49999, -0.49999)
self._snap_threshold = None
_triangle_path = Path._create_closed([[0, 1], [-1, -1], [1, -1]])
# Going down halfway looks to small. Golden ratio is too far.
_triangle_path_u = Path._create_closed([[0, 1], [-3/5, -1/5], [3/5, -1/5]])
_triangle_path_d = Path._create_closed(
[[-3/5, -1/5], [3/5, -1/5], [1, -1], [-1, -1]])
_triangle_path_l = Path._create_closed([[0, 1], [0, -1], [-1, -1]])
_triangle_path_r = Path._create_closed([[0, 1], [0, -1], [1, -1]])
def _set_triangle(self, rot, skip):
self._transform = Affine2D().scale(0.5).rotate_deg(rot)
self._snap_threshold = 5.0
if not self._half_fill():
self._path = self._triangle_path
else:
mpaths = [self._triangle_path_u,
self._triangle_path_l,
self._triangle_path_d,
self._triangle_path_r]
fs = self.get_fillstyle()
if fs == 'top':
self._path = mpaths[(0 + skip) % 4]
self._alt_path = mpaths[(2 + skip) % 4]
elif fs == 'bottom':
self._path = mpaths[(2 + skip) % 4]
self._alt_path = mpaths[(0 + skip) % 4]
elif fs == 'left':
self._path = mpaths[(1 + skip) % 4]
self._alt_path = mpaths[(3 + skip) % 4]
else:
self._path = mpaths[(3 + skip) % 4]
self._alt_path = mpaths[(1 + skip) % 4]
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_triangle_up(self):
return self._set_triangle(0.0, 0)
def _set_triangle_down(self):
return self._set_triangle(180.0, 2)
def _set_triangle_left(self):
return self._set_triangle(90.0, 3)
def _set_triangle_right(self):
return self._set_triangle(270.0, 1)
def _set_square(self):
self._transform = Affine2D().translate(-0.5, -0.5)
self._snap_threshold = 2.0
if not self._half_fill():
self._path = Path.unit_rectangle()
else:
# Build a bottom filled square out of two rectangles, one filled.
self._path = Path([[0.0, 0.0], [1.0, 0.0], [1.0, 0.5],
[0.0, 0.5], [0.0, 0.0]])
self._alt_path = Path([[0.0, 0.5], [1.0, 0.5], [1.0, 1.0],
[0.0, 1.0], [0.0, 0.5]])
fs = self.get_fillstyle()
rotate = {'bottom': 0, 'right': 90, 'top': 180, 'left': 270}[fs]
self._transform.rotate_deg(rotate)
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_diamond(self):
self._transform = Affine2D().translate(-0.5, -0.5).rotate_deg(45)
self._snap_threshold = 5.0
if not self._half_fill():
self._path = Path.unit_rectangle()
else:
self._path = Path([[0, 0], [1, 0], [1, 1], [0, 0]])
self._alt_path = Path([[0, 0], [0, 1], [1, 1], [0, 0]])
fs = self.get_fillstyle()
rotate = {'right': 0, 'top': 90, 'left': 180, 'bottom': 270}[fs]
self._transform.rotate_deg(rotate)
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_thin_diamond(self):
self._set_diamond()
self._transform.scale(0.6, 1.0)
def _set_pentagon(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 5.0
polypath = Path.unit_regular_polygon(5)
if not self._half_fill():
self._path = polypath
else:
verts = polypath.vertices
y = (1 + np.sqrt(5)) / 4.
top = Path(verts[[0, 1, 4, 0]])
bottom = Path(verts[[1, 2, 3, 4, 1]])
left = Path([verts[0], verts[1], verts[2], [0, -y], verts[0]])
right = Path([verts[0], verts[4], verts[3], [0, -y], verts[0]])
self._path, self._alt_path = {
'top': (top, bottom), 'bottom': (bottom, top),
'left': (left, right), 'right': (right, left),
}[self.get_fillstyle()]
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_star(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 5.0
polypath = Path.unit_regular_star(5, innerCircle=0.381966)
if not self._half_fill():
self._path = polypath
else:
verts = polypath.vertices
top = Path(np.concatenate([verts[0:4], verts[7:10], verts[0:1]]))
bottom = Path(np.concatenate([verts[3:8], verts[3:4]]))
left = Path(np.concatenate([verts[0:6], verts[0:1]]))
right = Path(np.concatenate([verts[0:1], verts[5:10], verts[0:1]]))
self._path, self._alt_path = {
'top': (top, bottom), 'bottom': (bottom, top),
'left': (left, right), 'right': (right, left),
}[self.get_fillstyle()]
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.bevel
def _set_hexagon1(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = None
polypath = Path.unit_regular_polygon(6)
if not self._half_fill():
self._path = polypath
else:
verts = polypath.vertices
# not drawing inside lines
x = np.abs(np.cos(5 * np.pi / 6.))
top = Path(np.concatenate([[(-x, 0)], verts[[1, 0, 5]], [(x, 0)]]))
bottom = Path(np.concatenate([[(-x, 0)], verts[2:5], [(x, 0)]]))
left = Path(verts[0:4])
right = Path(verts[[0, 5, 4, 3]])
self._path, self._alt_path = {
'top': (top, bottom), 'bottom': (bottom, top),
'left': (left, right), 'right': (right, left),
}[self.get_fillstyle()]
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_hexagon2(self):
self._transform = Affine2D().scale(0.5).rotate_deg(30)
self._snap_threshold = None
polypath = Path.unit_regular_polygon(6)
if not self._half_fill():
self._path = polypath
else:
verts = polypath.vertices
# not drawing inside lines
x, y = np.sqrt(3) / 4, 3 / 4.
top = Path(verts[[1, 0, 5, 4, 1]])
bottom = Path(verts[1:5])
left = Path(np.concatenate([
[(x, y)], verts[:3], [(-x, -y), (x, y)]]))
right = Path(np.concatenate([
[(x, y)], verts[5:2:-1], [(-x, -y)]]))
self._path, self._alt_path = {
'top': (top, bottom), 'bottom': (bottom, top),
'left': (left, right), 'right': (right, left),
}[self.get_fillstyle()]
self._alt_transform = self._transform
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_octagon(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 5.0
polypath = Path.unit_regular_polygon(8)
if not self._half_fill():
self._transform.rotate_deg(22.5)
self._path = polypath
else:
x = np.sqrt(2.) / 4.
self._path = self._alt_path = Path(
[[0, -1], [0, 1], [-x, 1], [-1, x],
[-1, -x], [-x, -1], [0, -1]])
fs = self.get_fillstyle()
self._transform.rotate_deg(
{'left': 0, 'bottom': 90, 'right': 180, 'top': 270}[fs])
self._alt_transform = self._transform.frozen().rotate_deg(180.0)
self._joinstyle = self._user_joinstyle or JoinStyle.miter
_line_marker_path = Path([[0.0, -1.0], [0.0, 1.0]])
def _set_vline(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 1.0
self._filled = False
self._path = self._line_marker_path
def _set_hline(self):
self._set_vline()
self._transform = self._transform.rotate_deg(90)
_tickhoriz_path = Path([[0.0, 0.0], [1.0, 0.0]])
def _set_tickleft(self):
self._transform = Affine2D().scale(-1.0, 1.0)
self._snap_threshold = 1.0
self._filled = False
self._path = self._tickhoriz_path
def _set_tickright(self):
self._transform = Affine2D().scale(1.0, 1.0)
self._snap_threshold = 1.0
self._filled = False
self._path = self._tickhoriz_path
_tickvert_path = Path([[-0.0, 0.0], [-0.0, 1.0]])
def _set_tickup(self):
self._transform = Affine2D().scale(1.0, 1.0)
self._snap_threshold = 1.0
self._filled = False
self._path = self._tickvert_path
def _set_tickdown(self):
self._transform = Affine2D().scale(1.0, -1.0)
self._snap_threshold = 1.0
self._filled = False
self._path = self._tickvert_path
_tri_path = Path([[0.0, 0.0], [0.0, -1.0],
[0.0, 0.0], [0.8, 0.5],
[0.0, 0.0], [-0.8, 0.5]],
[Path.MOVETO, Path.LINETO,
Path.MOVETO, Path.LINETO,
Path.MOVETO, Path.LINETO])
def _set_tri_down(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 5.0
self._filled = False
self._path = self._tri_path
def _set_tri_up(self):
self._set_tri_down()
self._transform = self._transform.rotate_deg(180)
def _set_tri_left(self):
self._set_tri_down()
self._transform = self._transform.rotate_deg(270)
def _set_tri_right(self):
self._set_tri_down()
self._transform = self._transform.rotate_deg(90)
_caret_path = Path([[-1.0, 1.5], [0.0, 0.0], [1.0, 1.5]])
def _set_caretdown(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 3.0
self._filled = False
self._path = self._caret_path
self._joinstyle = self._user_joinstyle or JoinStyle.miter
def _set_caretup(self):
self._set_caretdown()
self._transform = self._transform.rotate_deg(180)
def _set_caretleft(self):
self._set_caretdown()
self._transform = self._transform.rotate_deg(270)
def _set_caretright(self):
self._set_caretdown()
self._transform = self._transform.rotate_deg(90)
_caret_path_base = Path([[-1.0, 0.0], [0.0, -1.5], [1.0, 0]])
def _set_caretdownbase(self):
self._set_caretdown()
self._path = self._caret_path_base
def _set_caretupbase(self):
self._set_caretdownbase()
self._transform = self._transform.rotate_deg(180)
def _set_caretleftbase(self):
self._set_caretdownbase()
self._transform = self._transform.rotate_deg(270)
def _set_caretrightbase(self):
self._set_caretdownbase()
self._transform = self._transform.rotate_deg(90)
_plus_path = Path([[-1.0, 0.0], [1.0, 0.0],
[0.0, -1.0], [0.0, 1.0]],
[Path.MOVETO, Path.LINETO,
Path.MOVETO, Path.LINETO])
def _set_plus(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 1.0
self._filled = False
self._path = self._plus_path
_x_path = Path([[-1.0, -1.0], [1.0, 1.0],
[-1.0, 1.0], [1.0, -1.0]],
[Path.MOVETO, Path.LINETO,
Path.MOVETO, Path.LINETO])
def _set_x(self):
self._transform = Affine2D().scale(0.5)
self._snap_threshold = 3.0
self._filled = False
self._path = self._x_path
_plus_filled_path = Path._create_closed(np.array([
(-1, -3), (+1, -3), (+1, -1), (+3, -1), (+3, +1), (+1, +1),
(+1, +3), (-1, +3), (-1, +1), (-3, +1), (-3, -1), (-1, -1)]) / 6)
_plus_filled_path_t = Path._create_closed(np.array([
(+3, 0), (+3, +1), (+1, +1), (+1, +3),
(-1, +3), (-1, +1), (-3, +1), (-3, 0)]) / 6)
def _set_plus_filled(self):
self._transform = Affine2D()
self._snap_threshold = 5.0
self._joinstyle = self._user_joinstyle or JoinStyle.miter
if not self._half_fill():
self._path = self._plus_filled_path
else:
# Rotate top half path to support all partitions
self._path = self._alt_path = self._plus_filled_path_t
fs = self.get_fillstyle()
self._transform.rotate_deg(
{'top': 0, 'left': 90, 'bottom': 180, 'right': 270}[fs])
self._alt_transform = self._transform.frozen().rotate_deg(180)
_x_filled_path = Path._create_closed(np.array([
(-1, -2), (0, -1), (+1, -2), (+2, -1), (+1, 0), (+2, +1),
(+1, +2), (0, +1), (-1, +2), (-2, +1), (-1, 0), (-2, -1)]) / 4)
_x_filled_path_t = Path._create_closed(np.array([
(+1, 0), (+2, +1), (+1, +2), (0, +1),
(-1, +2), (-2, +1), (-1, 0)]) / 4)
def _set_x_filled(self):
self._transform = Affine2D()
self._snap_threshold = 5.0
self._joinstyle = self._user_joinstyle or JoinStyle.miter
if not self._half_fill():
self._path = self._x_filled_path
else:
# Rotate top half path to support all partitions
self._path = self._alt_path = self._x_filled_path_t
fs = self.get_fillstyle()
self._transform.rotate_deg(
{'top': 0, 'left': 90, 'bottom': 180, 'right': 270}[fs])
self._alt_transform = self._transform.frozen().rotate_deg(180)