@Test
public void testConstructAndGetValue_varyX() {

    final CircularExtractMask mask = new CircularExtractMask(7, 9, 3.2, 1.1);
    assertFalse(mask.getValue(0, 5));
    assertTrue(mask.getValue(1, 5));
    assertTrue(mask.getValue(2, 5));
    assertFalse(mask.getValue(6, 2));
    assertFalse(mask.getValue(6, 3));
    assertFalse(mask.getValue(6, 4));
}