FIX : Fix Error in transformations

Error detected during analysis of py-pdf#1280
pubpub-zz · Sep 10, 2022 · a5224c0 · a5224c0
1 parent 0ceaa60
commit a5224c0
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/PyPDF2/_page.py b/PyPDF2/_page.py
@@ -217,8 +217,8 @@ def compress(matrix: TransformationMatrixType) -> CompressedTransformationMatrix
  matrix[0][1],
  matrix[1][0],
  matrix[1][1],
- matrix[0][2],
- matrix[1][2],
+ matrix[2][0],
+ matrix[2][1],
  )
 
  def translate(self, tx: float = 0, ty: float = 0) -> "Transformation":

diff --git a/tests/test_page.py b/tests/test_page.py
@@ -88,6 +88,10 @@ def test_page_operations(pdf_path, password):
 
  page: PageObject = reader.pages[0]
 
+ t = Transformation().translate(50, 100).rotate(90)
+ assert abs(t.ctm[4] + 100) < 0.01
+ assert abs(t.ctm[5] - 50) < 0.01
+
  transformation = Transformation().rotate(90).scale(1).translate(1, 1)
  page.add_transformation(transformation, expand=True)
  page.add_transformation((1, 0, 0, 0, 0, 0))