Java Graphics Rotate rotateShape(final Shape base, final double angle, final float x, final float y)

Description

Rotates a shape about the specified coordinates.

License

Open Source License

Parameter

Parameter	Description
base	the shape (<code>null</code> permitted, returns <code>null</code>).
angle	the angle (in radians).
x	the x coordinate for the rotation point (in Java2D space).
y	the y coordinate for the rotation point (in Java2D space).

Return

the rotated shape.

Declaration

public static Shape rotateShape(final Shape base, final double angle, final float x, final float y) 

Method Source Code

//package com.java2s;
/*/*from w  ww  .j ava2 s. c  o m*/
 * ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 * Project Info: http://www.jfree.org/jcommon/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.
 * 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 * ---------------
 * ShapeUtils.java
 * ---------------
 * (C)opyright 2003, 2004, 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);
 */

import java.awt.Shape;
import java.awt.geom.AffineTransform;

public class Main {
    /**
     * Rotates a shape about the specified coordinates.
     * 
     * @param base
     *           the shape (<code>null</code> permitted, returns <code>null</code>).
     * @param angle
     *           the angle (in radians).
     * @param x
     *           the x coordinate for the rotation point (in Java2D space).
     * @param y
     *           the y coordinate for the rotation point (in Java2D space).
     * @return the rotated shape.
     */
    public static Shape rotateShape(final Shape base, final double angle, final float x, final float y) {
        if (base == null) {
            return null;
        }
        final AffineTransform rotate = AffineTransform.getRotateInstance(angle, x, y);
        final Shape result = rotate.createTransformedShape(base);
        return result;
    }
}

Related

1. rotatePoint(Point point, Point centerPoint, double angle)
2. rotatePoint(Point reference, Point toRotate, int degrees)
3. rotatePoint(Point target, Point origin, double theta)
4. rotatePoint2D(final Point aPoint, final float aDeg)
5. rotateRAD(double x, double y, double a)
6. rotateToZero(Vector points, Vector newPoints)