Test 90deg rotation for similarity transform

2026-08-16 11:27:48 +08:00 · 2014-05-10 10:22:55 -04:00
parent c3e13a9754
commit 02e6ad6b71
2 changed files with 13 additions and 2 deletions
@@ -620,9 +620,9 @@ class SimilarityTransform(ProjectiveTransform):

    @property
    def scale(self):
-        if math.cos(self.rotation) == 0:
+        if abs(math.cos(self.rotation)) < np.spacing(1):
            # sin(self.rotation) == 1
-            scale = self.params[0, 1]
+            scale = self.params[1, 0]
        else:
            scale = self.params[0, 0] / math.cos(self.rotation)
        return scale