@Test
public void testConstructAndGetValue_varyY() {

    final CircularExtractMask mask = new CircularExtractMask(9, 7, 3.2, 1.1);
    assertFalse(mask.getValue(0, 4));
    assertFalse(mask.getValue(1, 4));
    assertTrue(mask.getValue(2, 4));
    assertTrue(mask.getValue(6, 4));
    assertTrue(mask.getValue(6, 5));
    assertFalse(mask.getValue(6, 6));
}