From 3f59cdec57976ba0564887850541c0bd974c1e10 Mon Sep 17 00:00:00 2001 From: Antony Lee Date: Sun, 20 Jan 2019 07:08:08 +0100 Subject: [PATCH] Vectorize mplot3d.art3d.zalpha. I intentionally did not deprecate the now unused get_colors, as there's already another PR doing that. --- lib/mpl_toolkits/mplot3d/art3d.py | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/lib/mpl_toolkits/mplot3d/art3d.py b/lib/mpl_toolkits/mplot3d/art3d.py index 62f73e4ea7fb..808ee5a95f7c 100644 --- a/lib/mpl_toolkits/mplot3d/art3d.py +++ b/lib/mpl_toolkits/mplot3d/art3d.py @@ -790,9 +790,9 @@ def zalpha(colors, zs): # in all three dimensions. Otherwise, at certain orientations, # the min and max zs are very close together. # Should really normalize against the viewing depth. - colors = get_colors(colors, len(zs)) - if len(zs): - norm = Normalize(min(zs), max(zs)) - sats = 1 - norm(zs) * 0.7 - colors = [(c[0], c[1], c[2], c[3] * s) for c, s in zip(colors, sats)] - return colors + if len(zs) == 0: + return np.zeros((0, 4)) + norm = Normalize(min(zs), max(zs)) + sats = 1 - norm(zs) * 0.7 + rgba = np.broadcast_to(mcolors.to_rgba_array(colors), (len(zs), 4)) + return np.column_stack([rgba[:, :3], rgba[:, 3] * sats]) pFad - Phonifier reborn

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