void checkTransformation(AffineTransformation trans0, AffineTransformation trans1) {
   double[] m0 = trans0.getMatrixEntries();
   double[] m1 = trans1.getMatrixEntries();
   for (int i = 0; i < m0.length; i++) {
     assertEquals(m0[i], m1[i], 0.000005);
   }
 }