/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.referencing.operation.transform;
import org.opengis.parameter.ParameterValueGroup;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.datum.Ellipsoid;
import org.opengis.referencing.operation.TransformException;
import org.opengis.referencing.operation.MathTransform;
import org.opengis.referencing.operation.MathTransformFactory;
import org.geotools.referencing.ReferencingFactoryFinder;
import org.geotools.referencing.datum.DefaultEllipsoid;
import org.geotools.geometry.GeneralDirectPosition;
import org.junit.*;
import static org.junit.Assert.*;
/**
* Tests the {@link GeocentricTranslation} class.
*
*
* @source $URL$
* @version $Id$
* @author Martin Desruisseaux (IRD)
*/
public final class GeocentricTranslationTest {
/**
* Test case using example from EPSG Guidance Note number 7 part 2 (May 2005),
* section 2.4.3.1.
*/
@Test
public void testTranslation() throws FactoryException, TransformException {
final String classification = "Geocentric translations (geog2d domain)";
final MathTransformFactory factory = ReferencingFactoryFinder.getMathTransformFactory(null);
final ParameterValueGroup param = factory.getDefaultParameters(classification);
param.parameter("dx").setValue( 84.87);
param.parameter("dy").setValue( 96.49);
param.parameter("dz").setValue(116.95);
final MathTransform test = factory.createParameterizedTransform(param);
final GeneralDirectPosition position = new GeneralDirectPosition(3);
position.setOrdinate(0, 3771793.97);
position.setOrdinate(1, 140253.34);
position.setOrdinate(2, 5124304.35);
assertSame(position, test.transform(position, position));
assertEquals(3771878.84, position.getOrdinate(0), 1E-5);
assertEquals( 140349.83, position.getOrdinate(1), 1E-5);
assertEquals(5124421.30, position.getOrdinate(2), 1E-5);
}
/**
* Test case using example from EPSG Guidance Note number 7 part 2 (May 2005),
* section 2.4.3.2.1.
*/
@Test
public void testSevenParam() throws FactoryException, TransformException {
final String classification = "Position Vector transformation (geog2d domain)";
final MathTransformFactory factory = ReferencingFactoryFinder.getMathTransformFactory(null);
final ParameterValueGroup param = factory.getDefaultParameters(classification);
param.parameter("dx") .setValue(0.000);
param.parameter("dy") .setValue(0.000);
param.parameter("dz") .setValue(4.5);
param.parameter("ex") .setValue(0.000);
param.parameter("ey") .setValue(0.000);
param.parameter("ez") .setValue(0.554);
param.parameter("ppm").setValue(0.219);
final MathTransform test = factory.createParameterizedTransform(param);
final GeneralDirectPosition position = new GeneralDirectPosition(3);
position.setOrdinate(0, 3657660.66);
position.setOrdinate(1, 255768.55);
position.setOrdinate(2, 5201382.11);
assertSame(position, test.transform(position, position));
assertEquals(3657660.78, position.getOrdinate(0), 1E-2);
assertEquals( 255778.43, position.getOrdinate(1), 1E-5);
assertEquals(5201387.75, position.getOrdinate(2), 1E-2);
}
/**
* Test case using example from EPSG Guidance Note number 7 part 2 (May 2005),
* section 2.4.3.2.2.
*/
@Test
public void testFrameRotation() throws FactoryException, TransformException {
final String classification = "Coordinate Frame rotation (geog2d domain)";
final MathTransformFactory factory = ReferencingFactoryFinder.getMathTransformFactory(null);
final ParameterValueGroup param = factory.getDefaultParameters(classification);
param.parameter("dx") .setValue( 0.000);
param.parameter("dy") .setValue( 0.000);
param.parameter("dz") .setValue( 4.5);
param.parameter("ex") .setValue( 0.000);
param.parameter("ey") .setValue( 0.000);
param.parameter("ez") .setValue(-0.554);
param.parameter("ppm").setValue( 0.219);
final MathTransform test = factory.createParameterizedTransform(param);
final GeneralDirectPosition position = new GeneralDirectPosition(3);
position.setOrdinate(0, 3657660.66);
position.setOrdinate(1, 255768.55);
position.setOrdinate(2, 5201382.11);
assertSame(position, test.transform(position, position));
assertEquals(3657660.78, position.getOrdinate(0), 1E-2);
assertEquals( 255778.43, position.getOrdinate(1), 1E-5);
assertEquals(5201387.75, position.getOrdinate(2), 1E-2);
}
/**
* Tests the creation with geocentric transforms.
* Note: the expected values here are approximatives since we didn't used
* an external source of test points for this test.
*/
@Test
public void testGeotoolsExtensions() throws FactoryException, TransformException {
final String classification = "Coordinate Frame rotation (geog2d domain)";
final MathTransformFactory factory = ReferencingFactoryFinder.getMathTransformFactory(null);
final ParameterValueGroup param = factory.getDefaultParameters(classification);
final Ellipsoid sourceEllipsoid = DefaultEllipsoid.INTERNATIONAL_1924;
final Ellipsoid targetEllipsoid = DefaultEllipsoid.WGS84;
param.parameter("dx") .setValue( 0.000);
param.parameter("dy") .setValue( 0.000);
param.parameter("dz") .setValue( 4.5);
param.parameter("ex") .setValue( 0.000);
param.parameter("ey") .setValue( 0.000);
param.parameter("ez") .setValue(-0.554);
param.parameter("ppm").setValue( 0.219);
param.parameter("src_dim").setValue(3);
param.parameter("tgt_dim").setValue(3);
param.parameter("src_semi_major").setValue(sourceEllipsoid.getSemiMajorAxis());
param.parameter("src_semi_minor").setValue(sourceEllipsoid.getSemiMinorAxis());
param.parameter("tgt_semi_major").setValue(targetEllipsoid.getSemiMajorAxis());
param.parameter("tgt_semi_minor").setValue(targetEllipsoid.getSemiMinorAxis());
final MathTransform test = factory.createParameterizedTransform(param);
final GeneralDirectPosition position = new GeneralDirectPosition(3);
position.setOrdinate(0, 4.00); // Longitude
position.setOrdinate(1, 55.00); // Latitude
position.setOrdinate(2, -191.61); // Height
assertSame(position, test.transform(position, position));
assertEquals( 4.00, position.getOrdinate(0), 1E-2);
assertEquals(55.00, position.getOrdinate(1), 1E-2);
assertEquals( 3.23, position.getOrdinate(2), 1E-2);
}
}