test-sources/org/apache/batik/svggen/AffineTransform.java

/*****************************************************************************
 * Copyright (C) The Apache Software Foundation. All rights reserved.        *
 * ------------------------------------------------------------------------- *
 * This software is published under the terms of the Apache Software License *
 * version 1.1, a copy of which has been included with this distribution in  *
 * the LICENSE file.                                                         *
 *****************************************************************************/

package org.apache.batik.svggen;

import java.awt.*;
import java.awt.geom.*;

/**
 * This test validates the convertion of Java 2D AffineTransform into SVG
 * Shapes.
 *
 * @author <a href="mailto:cjolif@ilog.fr">Christophe Jolif</a>
 * @author <a href="mailto:vhardy@eng.sun.com">Vincent Hardy</a>
 * @version $Id$
 */
public class AffineTransform implements Painter {
    public void paint(Graphics2D g) {
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                           RenderingHints.VALUE_ANTIALIAS_ON);

        g.setPaint(Color.black); // new Color(102, 102, 144));

        int legendX = 10, legendY = 12;
        g.translate(0, 30);

        java.awt.geom.AffineTransform defaultTransform = g.getTransform();

        // Define rectangle
        Rectangle rect = new Rectangle(10, 20, 50, 30);

        // Paint with default transform
        g.drawString("Default transform", legendX, legendY);
        g.fill(rect);

        // Paint after translate
        g.translate(0, 90);
        g.drawString("Translate applied", legendX, legendY);
        g.fill(rect);

        // Rotate rectangle about its center
        g.translate(0, 90);
        g.rotate(Math.PI/2, 35, 35);
        g.drawString("Rotate about center", legendX, legendY);
        g.fill(rect);

        // Restore default transform
        g.setTransform(defaultTransform);

        // Paint after scale
        g.translate(150, 0);
        g.drawString("Scale (sx=2, sy=1)", legendX, legendY);
        g.scale(2, 1);
        g.fill(rect);

        // Paint after shear
        g.setTransform(defaultTransform);
        g.translate(150, 90);
        g.drawString("Shear", legendX, legendY);
        g.shear(.2, 1);
        g.fill(rect);

        java.awt.geom.AffineTransform txf = g.getTransform();
        g.setTransform(new java.awt.geom.AffineTransform());
        Shape shearBounds = txf.createTransformedShape(rect).getBounds();
        g.setPaint(new Color(0, 0, 0, 128));
        g.fill(shearBounds);
    }
}