Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

* 

* This program 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 General Public License for more details.

* 

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

/*

* AUTHORS (In addition to CIT):

* 2009 {Iver T.I.}   {Task}

*/

package org.gvsig.fmap.geom;

import java.awt.geom.Rectangle2D;

import junit.framework.Assert;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.tools.junit.AbstractLibraryAutoInitTestCase;

/**

 * Tests some methods in geometry API with various instances.

 * 

 * @author jldominguez

 *

 */

public class GeometryAPITest extends AbstractLibraryAutoInitTestCase {

        private GeometryManager manager;

        final static private Logger logger = LoggerFactory.getLogger("org.gvsig");

        protected void doSetUp() throws Exception {

                manager = GeometryLocator.getGeometryManager();                

        }

        public void testMethods() throws InstantiationException, IllegalAccessException, CreateGeometryException{

            try {

            Envelope env0 = manager.createEnvelope(0,0,1,1, SUBTYPES.GEOM2D);

            Envelope env1 = manager.createEnvelope(2,0,3,1, SUBTYPES.GEOM2D);

            Geometry g0 = env0.getGeometry();

            Geometry g1 = env1.getGeometry();

            Geometry gm = g0.union(g1);

            gm.move(-2,2);

            double cxy = gm.getBounds2D().getCenterX()

                *gm.getBounds2D().getCenterY();

            // test move ============================

            Assert.assertEquals(-1.25, cxy, 0.0000000001);

            // ==========================================

            gm.move(2,-2);

            gm.rotate(30.0*Math.PI/180.0, 0,1);

            double maxy = 1 + 3 * Math.sin(30.0*Math.PI/180.0);

            // test rotation ============================

            Assert.assertEquals(maxy, gm.getBounds2D().getMaxY(), 0.0000000001);

            // ==========================================

            gm.rotate(-30.0*Math.PI/180.0, 0,1);

            Point p = manager.createPoint(1.5, 0.5, SUBTYPES.GEOM2D);

            gm.scale(p, 0.5, 1.5);

            Rectangle2D bb = gm.getBounds2D();

            // test scale ============================

            Assert.assertEquals(0.75, bb.getMinX(), 0.0000000001);

            Assert.assertEquals(-0.25, bb.getMinY(), 0.0000000001);

            Assert.assertEquals(2.25, bb.getMaxX(), 0.0000000001);

            Assert.assertEquals(1.25, bb.getMaxY(), 0.0000000001);

            // =======================================

        } catch (Exception e) {

            logger.info("Error while checking Geometry API.", e);

            Assert.assertTrue(e == null);

        }

        }        

}