Creates and returns a translated shape. - Java 2D Graphics

Java examples for 2D Graphics:Shape

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Description

Creates and returns a translated shape.

Demo Code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * 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; either version 2.1 of the License, or
 * (at your option) any later version./*from  w w  w.j a v a 2  s. c o m*/
 *
 * 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -------------------
 * ShapeUtilities.java
 * -------------------
 * (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 13-Aug-2003 : Version 1 (DG);
 * 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
 * 13-May-2004 : Added new shape creation methods (DG);
 * 30-Sep-2004 : Added createLineRegion() method (DG);
 *               Moved drawRotatedShape() method from RefineryUtilities class
 *               to this class (DG);
 * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
 * 26-Oct-2004 : Added a method to test the equality of two Line2D
 *               instances (DG);
 * 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
 *               methods (DG);
 * 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
 * 07-Jan-2005 : Minor Javadoc fix (DG);
 * 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
 * 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
 *               method (DG);
 * 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
 * 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
 *               instances (DG);
 * 20-Jun-2007 : Copied from JCommon (DG);
 * 02-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) (DG);
 * 05-Nov-2008 : Added clipLine() method (DG);
 *
 */
import java.awt.Graphics2D;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.PathIterator;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.util.Arrays;

public class Main{
    /**
     * Creates and returns a translated shape.
     *
     * @param shape  the shape (<code>null</code> not permitted).
     * @param transX  the x translation (in Java2D space).
     * @param transY  the y translation (in Java2D space).
     *
     * @return The translated shape.
     */
    public static Shape createTranslatedShape(Shape shape, double transX,
            double transY) {
        if (shape == null) {
            throw new IllegalArgumentException("Null 'shape' argument.");
        }
        AffineTransform transform = AffineTransform.getTranslateInstance(
                transX, transY);
        return transform.createTransformedShape(shape);
    }
    /**
     * Translates a shape to a new location such that the anchor point
     * (relative to the rectangular bounds of the shape) aligns with the
     * specified (x, y) coordinate in Java2D space.
     *
     * @param shape  the shape (<code>null</code> not permitted).
     * @param anchor  the anchor (<code>null</code> not permitted).
     * @param locationX  the x-coordinate (in Java2D space).
     * @param locationY  the y-coordinate (in Java2D space).
     *
     * @return A new and translated shape.
     */
    public static Shape createTranslatedShape(Shape shape,
            RectangleAnchor anchor, double locationX, double locationY) {
        if (shape == null) {
            throw new IllegalArgumentException("Null 'shape' argument.");
        }
        if (anchor == null) {
            throw new IllegalArgumentException("Null 'anchor' argument.");
        }
        Point2D anchorPoint = RectangleAnchor.coordinates(
                shape.getBounds2D(), anchor);
        AffineTransform transform = AffineTransform.getTranslateInstance(
                locationX - anchorPoint.getX(),
                locationY - anchorPoint.getY());
        return transform.createTransformedShape(shape);
    }
}

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