How to use

setValues

method

in

org.apache.sis.referencing.datum.BursaWolfParameters

/**
 * Sets the parameters to the given values. The given array can have any length. The first array elements will be
 * assigned to the {@link #tX tX}, {@link #tY tY}, {@link #tZ tZ}, {@link #rX rX}, {@link #rY rY}, {@link #rZ rZ},
 * {@link #dS dS}, {@link #dtX}, {@link #dtY}, {@link #dtZ}, {@link #drX}, {@link #drY}, {@link #drZ} and
 * {@link #ddS} fields in that order.
 *
 * @param  elements  the new parameter values, as an array of any length.
 *
 * @since 0.6
 */
@Override
@SuppressWarnings("fallthrough")
public void setValues(final double... elements) {
  if (elements.length >= 8) {
    switch (elements.length) {
      default:  ddS = elements[13];  // Fallthrough everywhere.
      case 13:  drZ = elements[12];
      case 12:  drY = elements[11];
      case 11:  drX = elements[10];
      case 10:  dtZ = elements[ 9];
      case  9:  dtY = elements[ 8];
      case  8:  dtX = elements[ 7];
    }
  }
  super.setValues(elements);
}

/**
 * Sets the parameters to the given values. The given array can have any length. The first array elements will be
 * assigned to the {@link #tX tX}, {@link #tY tY}, {@link #tZ tZ}, {@link #rX rX}, {@link #rY rY}, {@link #rZ rZ},
 * {@link #dS dS}, {@link #dtX}, {@link #dtY}, {@link #dtZ}, {@link #drX}, {@link #drY}, {@link #drZ} and
 * {@link #ddS} fields in that order.
 *
 * @param  elements  the new parameter values, as an array of any length.
 *
 * @since 0.6
 */
@Override
@SuppressWarnings("fallthrough")
public void setValues(final double... elements) {
  if (elements.length >= 8) {
    switch (elements.length) {
      default:  ddS = elements[13];  // Fallthrough everywhere.
      case 13:  drZ = elements[12];
      case 12:  drY = elements[11];
      case 11:  drX = elements[10];
      case 10:  dtZ = elements[ 9];
      case  9:  dtY = elements[ 8];
      case  8:  dtX = elements[ 7];
    }
  }
  super.setValues(elements);
}

/**
 * Inverts in-place the transformation by inverting the sign of all numerical parameters.
 * The {@linkplain #getPositionVectorTransformation(Date) position vector transformation} matrix
 * created from inverted Bursa-Wolf parameters will be <strong>approximately</strong> equals
 * to the {@linkplain org.apache.sis.referencing.operation.matrix.MatrixSIS#inverse() inverse}
 * of the matrix created from the original parameters. The equality holds approximately only
 * because the parameter values are very small (parts per millions and arc-seconds).
 */
public void invert() {
  final double[] values = getValues();
  for (int i=0; i<values.length; i++) {
    values[i] = -values[i];
  }
  setValues(values);
}

/**
 * Inverts in-place the transformation by inverting the sign of all numerical parameters.
 * The {@linkplain #getPositionVectorTransformation(Date) position vector transformation} matrix
 * created from inverted Bursa-Wolf parameters will be <strong>approximatively</strong> equals
 * to the {@linkplain org.apache.sis.referencing.operation.matrix.MatrixSIS#inverse() inverse}
 * of the matrix created from the original parameters. The equality holds approximatively only
 * because the parameter values are very small (parts per millions and arc-seconds).
 */
public void invert() {
  final double[] values = getValues();
  for (int i=0; i<values.length; i++) {
    values[i] = -values[i];
  }
  setValues(values);
}

/**
 * Creates the {@code TOWGS84} element during parsing of a WKT version 1.
 *
 * @param  values  the 7 Bursa-Wolf parameter values.
 * @return the {@link BursaWolfParameters}.
 *
 * @since 0.6
 */
@Override
public Object createToWGS84(final double[] values) {
  final BursaWolfParameters info = new BursaWolfParameters(CommonCRS.WGS84.datum(), null);
  info.setValues(values);
  return info;
}

/**
 * Creates the {@code TOWGS84} element during parsing of a WKT version 1.
 *
 * @param  values  the 7 Bursa-Wolf parameter values.
 * @return the {@link BursaWolfParameters}.
 *
 * @since 0.6
 */
@Override
public Object createToWGS84(final double[] values) {
  final BursaWolfParameters info = new BursaWolfParameters(CommonCRS.WGS84.datum(), null);
  info.setValues(values);
  return info;
}

/**
 * Tests {@link BursaWolfParameters#setValues(double[])}.
 */
@Test
@DependsOnMethod("testGetValues")
public void testSetValues() {
  final BursaWolfParameters actual =  createWGS72_to_WGS84();
  final BursaWolfParameters expected = createED87_to_WGS84();
  final double[] values = expected.getValues();
  assertFalse("equals(Object) before to set the values.", actual.equals(expected));
  actual.setValues(values);
  assertArrayEquals("getValues() after setting the values.", values, actual.getValues(), STRICT);
  // Can not test assertEquals(expected, actual) because of different geographic extent.
}