net.sourceforge.plantuml.png.PngRotation Maven / Gradle / Ivy

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/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2012, Arnaud Roques
 *
 * Project Info:  http://plantuml.sourceforge.net
 * 
 * This file is part of PlantUML.
 *
 * PlantUML 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 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 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.]
 *
 * Original Author:  Arnaud Roques
 * 
 * Revision $Revision: 7715 $
 *
 */
package net.sourceforge.plantuml.png;

import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;

import net.sourceforge.plantuml.Log;

public class PngRotation {

	public static BufferedImage process(BufferedImage im) {

		Log.info("Rotation");

		final BufferedImage newIm = new BufferedImage(im.getHeight(), im.getWidth(), BufferedImage.TYPE_INT_RGB);
		final Graphics2D g2d = newIm.createGraphics();

		final AffineTransform at = new AffineTransform(0, 1, 1, 0, 0, 0);
		at.concatenate(new AffineTransform(-1, 0, 0, 1, im.getWidth(), 0));
		g2d.setTransform(at);

		g2d.drawImage(im, 0, 0, null);
		g2d.dispose();

		return newIm;
	}

}