Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.fmap.mapcontext.rendering.symbols;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.geom.AffineTransform;

import java.awt.geom.Point2D;

import java.awt.image.BufferedImage;

import java.util.ArrayList;

import org.gvsig.fmap.core.shapes.FPolyline2D;

import org.gvsig.fmap.core.shapes.GeneralPathX;

import org.gvsig.fmap.mapcontext.rendering.symbols.ILineSymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import junit.framework.TestCase;

/**

 * Integration test to test that Line symbols always draw in the same

 * place respecting size constraints.

 *

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 */

public class TestDrawLines extends TestCase {

        private ILineSymbol[] symbols;

        private final Dimension sz = new Dimension(401, 401);

        private final FPolyline2D centerL;

        {

                GeneralPathX gp = new GeneralPathX();

                gp.moveTo(0, sz.height / 2 );

                gp.lineTo(sz.width, sz.height /2 );

                centerL = new FPolyline2D(gp);

        }

        private static final double sizes[] = new double[] {

                300,

                250,

                225,

                200,

                100,

                50,

                30,

                15,

                5,

                3,

                2,

                1,

                // smaller sizes don't make any sense

        };

        private static final float INNER_TOLERANCE = 1F;

        private static final float OUTTER_TOLERANCE = 1F;

        protected void setUp() throws Exception {

                // get all the symbols in the Test Suite

                super.setUp();

                ISymbol[] allSymbols = TestISymbol.getNewSymbolInstances();

                // Filter the marker ones

                ArrayList symbols = new ArrayList();

                for (int i = 0; i < allSymbols.length; i++) {

                        if (allSymbols[i] instanceof ILineSymbol) {

                                ILineSymbol sym = (ILineSymbol) allSymbols[i];

                                symbols.add(sym);

                        }

                }

                this.symbols = (ILineSymbol[]) symbols.toArray(new ILineSymbol[symbols.size()]);

        }

        public void testDrawingSize() {

                for (int i = 0; i < symbols.length; i++) {

                        for (int j = 0; j < sizes.length; j++) {

                                // new blank buffered image

                                BufferedImage bi = new BufferedImage(sz.width, sz.height, BufferedImage.TYPE_INT_ARGB);

                                // the graphics for the image, so we can draw onto the buffered image

                                Graphics2D g = bi.createGraphics();

                                ILineSymbol testSymbol = symbols[i];

                                testSymbol.setLineColor(Color.YELLOW);

                                testSymbol.setLineWidth(sizes[j]);

                                String name = testSymbol.getClassName().substring(

                                                testSymbol.getClassName().lastIndexOf('.')+1,

                                                testSymbol.getClassName().length());

                                Point2D upperP1 = new Point2D.Double(0, centerL.getBounds().getY() - sizes[j]*0.5);

                                Point2D upperP2 = new Point2D.Double(centerL.getBounds().getWidth(), centerL.getBounds().getY() - sizes[j]*0.5);

                                GeneralPathX gpUp = new GeneralPathX();

                                gpUp.moveTo(upperP1.getX(), upperP1.getY());

                                gpUp.lineTo(upperP2.getX(), upperP2.getY());

                                GeneralPathX gpDown = new GeneralPathX();

                                Point2D lowerP1 = new Point2D.Double(0, centerL.getBounds().getY() + sizes[j]*0.5);

                                Point2D lowerP2 = new Point2D.Double(centerL.getBounds().getWidth(), centerL.getBounds().getY() + sizes[j]*0.5);

                                gpDown.moveTo(lowerP1.getX(), lowerP1.getY());

                                gpDown.lineTo(lowerP2.getX(), lowerP2.getY());

                                testSymbol.draw(g, new AffineTransform(), centerL, null);

                                /// per a borrar

//                                g.setStroke(new BasicStroke());

//                                g.setColor(Color.RED);

//

//                                g.draw(gpUp);

//

//                                g.setColor(Color.BLUE);

//                                g.draw(gpDown);

//

//                                try {

//

//                                        File dstDir = new File (System.getProperty("java.io.tmpdir")+"/prova-imatges/");

//                                        if (!dstDir.exists()) dstDir.mkdir();

//                                ImageIO.write(bi, "png",

//                                                new File(dstDir.getAbsoluteFile()+File.separator+

//                                                                        name+"_size_"+sizes[j]

//                                                                                            +".png"));

//                                } catch (IOException e) {

//                                        e.printStackTrace();

//                                        fail();

//                                }

                                /// fi per a borrar

                                assertFalse("fails sizing line, too big ("+name+", "+sizes[j]+"px)", isOutsideRect(bi, upperP1, lowerP1, OUTTER_TOLERANCE ));

                                assertTrue("fails sizing line, too small ("+name+", "+sizes[j]+"px) \n" +

                                                "\t - forgot to enable ANTIALIASING?", fitsInsideRect(bi, upperP1, lowerP1, INNER_TOLERANCE));

                        }

                }

        }

        private boolean isOutsideRect(BufferedImage bi, Point2D upper, Point2D lower, float outterTolerance) {

                for (int i = 0; i < bi.getWidth(); i++) {

                        for (int j = 0; j < bi.getHeight(); j++) {

                                if (j<upper.getY()-outterTolerance && j>lower.getY()+outterTolerance)

                                        if (bi.getRGB(i,j) != 0) {

                                                System.out.println("too big In pixel ("+i+", "+j+")");

                                                return true;

                                        }

                        }

                }

                return false;

        }

        private boolean fitsInsideRect(BufferedImage bi,Point2D upper, Point2D lower , float innerTolerance) {

                for (int i = 0; i < bi.getWidth(); i++) {

                        for (int j = 0; j < bi.getHeight(); j++) {

                                if (j<upper.getY()+innerTolerance && j>lower.getY()-innerTolerance)

                                        if (bi.getRGB(i,j) == 0) {

                                                System.out.println("does not fit big In pixel ("+i+", "+j+")");

                                                return false;

                                        }

                        }

                }

                return true;

        }

}