10000 Caching the results of Transform.transform_path for non-affine transforms by pelson · Pull Request #723 · matplotlib/matplotlib · GitHub
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Caching the results of Transform.transform_path for non-affine transforms #723

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Merged
merged 9 commits into from
Jun 8, 2012
Merged

Caching the results of Transform.transform_path for non-affine transforms #723

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753c9a2
Single commit of necessary transform changes.
Feb 28, 2012
c4ceace
Fixed is_affine inheritance & added scatter test which highlighted th…
Mar 6, 2012
bf4dd97
Fixed failing unit test. (in test_axes)
Mar 6, 2012
4c88a6d
Moved scatter test into test_axes.py
Mar 20, 2012
c088477
Fixed broken handling of WrappedTransform
Apr 20, 2012
1b1b340
Intermediate commit to request some assistance.
Apr 20, 2012
e9cc98e
Fixed __array__ releated bug that I introduced.
May 1, 2012
c898bdf
Improved comments.
May 1, 2012
a81545c
Now working with rebased master.
pelson Jun 7, 2012
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Fixed broken handling of WrappedTransform
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@pelson
Phil Elson authored and pelson committed Jun 7, 2012
commit c0884772332c011429a604d0ab0d04ab2f41a02c
14 changes: 9 additions & 5 deletions lib/matplotlib/transforms.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1293,11 +1293,11 @@ def _set(self, child):
self.transform_path_non_affine = child.transform_path_non_affine
self.get_affine = child.get_affine
self.inverted = child.inverted
self.is_affine = child.is_affine
self.get_matrix = child.get_matrix

def __eq__(self, other):
return self._child == other
# note we do not wrap other properties here since the transform's
# child can be changed with WrappedTransform.set and so checking
# is_affine and other such properties may be dangerous.

def set(self, child):
"""
Expand Down Expand Up @@ -2044,9 +2044,13 @@ def composite_transform_factory(a, b):

c = a + b
"""
if a == IdentityTransform():
# check to see if any of a or b are IdentityTransforms. Note we
# do not use equality here since we may have wrapped transforms
# which are currently equal to Identity, but since wrapped transforms
# are mutable, they may not always be equal.
if isinstance(a, IdentityTransform):
return b
elif b == IdentityTransform():
elif isinstance(b, IdentityTransform):
return a
elif a.is_affine and b.is_affine:
return CompositeAffine2D(a, b)
Expand Down