TEST: Add test case with shear component

tests/test_transform/test_affine.py

@@ -226,8 +226,9 @@ def test_compose_and_decompose():
         xform                      = lines[i * 4: i * 4 + 4]
         xform                      = np.genfromtxt(xform)
 
-        scales, offsets, rotations = affine.decompose(xform)
-        result = affine.compose(scales, offsets, rotations)
+        scales, offsets, rotations, shears = affine.decompose(
+            xform, shears=True)
+        result = affine.compose(scales, offsets, rotations, shears=shears)
 
         assert np.all(np.isclose(xform, result, atol=1e-5))
 

tests/test_transform/testdata/test_transform_test_compose.txt

@@ -23,7 +23,7 @@
 1.0  0.0   0.0  0.0
 0.0  1.0   0.0  0.0
 0.0  0.0  -1.0  0.0
-0.0  0.0   0.0  1.0 
+0.0  0.0   0.0  1.0
 
 0.5   0.0  0.0   0.0
 0.0   2.4  0.0   0.0
@@ -35,22 +35,22 @@
 0.0   0.0   1.6  53.0
 0.0   0.0   0.0   1.0
 
-0.5            0.0            0.0           10.0         
+0.5            0.0            0.0           10.0
 0.0            0.0           -1.6           -6.7877502441
 0.0            2.4            0.0           29.7931518555
-0.0            0.0            0.0            1.0         
+0.0            0.0            0.0            1.0
 
 0.0           -2.4           -0.0           30.6160888672
 0.0            0.0           -1.6           -6.7877502441
 0.5            0.0            0.0           50.5961608887
-0.0            0.0            0.0            1.0         
+0.0            0.0            0.0            1.0
 
 -0.0            1.3765834472   1.3106432709   0.0736983719
  0.0           -1.9659649063   0.9177222982  14.1062102814
  0.5            0.0            0.0           50.5961608887
  0.0            0.0            0.0            1.0
 
- 0.453766452   -0.7004337463   0.4832135801  16.789591468 
+ 0.453766452   -0.7004337463   0.4832135801  16.789591468
 -0.0159784155   1.6056689296   1.1880787388 -16.2943532298
 -0.2093817023  -1.640493784    0.9565424959  66.1123321137
  0.0            0.0            0.0            1.0
@@ -109,3 +109,8 @@
  0.041017  -0.081580  -6.319922   72.090378
 -0.000000   0.381914  -1.365036  -41.159451
  0.000000   0.000000   0.000000    1.000000
+
+1.1441229   0.833406   3.765340    3
+0.8312539   2.459607  -0.804545    4
+1.4142136   1.554275   1.724796    5
+0.0         0.0        0.0         1