| import numpy as np |
|
|
| import pytest |
|
|
| from matplotlib.testing.decorators import check_figures_equal |
| from matplotlib import ( |
| collections as mcollections, patches as mpatches, path as mpath) |
|
|
|
|
| @pytest.mark.backend('cairo') |
| @check_figures_equal(extensions=["png"]) |
| def test_patch_alpha_coloring(fig_test, fig_ref): |
| """ |
| Test checks that the patch and collection are rendered with the specified |
| alpha values in their facecolor and edgecolor. |
| """ |
| star = mpath.Path.unit_regular_star(6) |
| circle = mpath.Path.unit_circle() |
| |
| verts = np.concatenate([circle.vertices, star.vertices[::-1]]) |
| codes = np.concatenate([circle.codes, star.codes]) |
| cut_star1 = mpath.Path(verts, codes) |
| cut_star2 = mpath.Path(verts + 1, codes) |
|
|
| |
| ax = fig_ref.subplots() |
| ax.set_xlim([-1, 2]) |
| ax.set_ylim([-1, 2]) |
| patch = mpatches.PathPatch(cut_star1, |
| linewidth=5, linestyle='dashdot', |
| facecolor=(1, 0, 0, 0.5), |
| edgecolor=(0, 0, 1, 0.75)) |
| ax.add_patch(patch) |
| patch = mpatches.PathPatch(cut_star2, |
| linewidth=5, linestyle='dashdot', |
| facecolor=(1, 0, 0, 0.5), |
| edgecolor=(0, 0, 1, 0.75)) |
| ax.add_patch(patch) |
|
|
| |
| ax = fig_test.subplots() |
| ax.set_xlim([-1, 2]) |
| ax.set_ylim([-1, 2]) |
| col = mcollections.PathCollection([cut_star1, cut_star2], |
| linewidth=5, linestyles='dashdot', |
| facecolor=(1, 0, 0, 0.5), |
| edgecolor=(0, 0, 1, 0.75)) |
| ax.add_collection(col) |
|
|
