matplotlib/examples/api/compound_path.py at master · ryanfreckleton/matplotlib · GitHub

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"""

Make a compund path -- in this case two simple polygons, a rectangle

and a triangle. Use CLOSEOPOLY and MOVETO for the different parts of

the compound path

"""

import numpy as np

from matplotlib.path import Path

from matplotlib.patches import PathPatch

import matplotlib.pyplot as plt

vertices = []

codes = []

codes = [Path.MOVETO] + [Path.LINETO]*3 + [Path.CLOSEPOLY]

vertices = [(1,1), (1,2), (2, 2), (2, 1), (0,0)]

codes += [Path.MOVETO] + [Path.LINETO]*2 + [Path.CLOSEPOLY]

vertices += [(4,4), (5,5), (5, 4), (0,0)]

vertices = np.array(vertices, float)

path = Path(vertices, codes)

pathpatch = PathPatch(path, facecolor='None', edgecolor='green')

fig, ax = plt.subplots()

ax.add_patch(pathpatch)

ax.set_title('A compound path')

ax.dataLim.update_from_data_xy(vertices)

ax.autoscale_view()

plt.show()