package org.geotools.data.shapefile.shp;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import org.geotools.data.shapefile.shp.JTSUtilities;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.LinearRing;
/**
*
*
* @source $URL$
*/
public class JTSUtilitiesTest {
GeometryFactory geomFactory;
@Before
public void setUp() {
geomFactory = new GeometryFactory();
}
@After
public void tearDown() {
geomFactory = null;
}
@Test
public void testReverseRing() {
Coordinate[] coordinates = new Coordinate[] { new Coordinate(0, 0), new Coordinate(1, 1),
new Coordinate(0, 2), new Coordinate(0, 0) };
LinearRing before = geomFactory.createLinearRing(coordinates);
assertEquals(before.getCoordinateN(0), coordinates[0]);
assertEquals(before.getCoordinateN(1), coordinates[1]);
assertEquals(before.getCoordinateN(2), coordinates[2]);
assertEquals(before.getCoordinateN(3), coordinates[3]);
LinearRing after = JTSUtilities.reverseRing(before);
assertTrue( after.equalsTopo(before.reverse()) );
assertEquals(after.getCoordinateN(0), coordinates[3]);
assertEquals(after.getCoordinateN(1), coordinates[2]);
assertEquals(after.getCoordinateN(2), coordinates[1]);
assertEquals(after.getCoordinateN(3), coordinates[0]);
}
}