plantuml/src/net/sourceforge/plantuml/ugraphic/hand/UPathHand.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2017, 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:  Adrian Vogt
 *
 */
package net.sourceforge.plantuml.ugraphic.hand;

import java.awt.geom.Point2D;

import net.sourceforge.plantuml.ugraphic.UPath;
import net.sourceforge.plantuml.ugraphic.USegment;
import net.sourceforge.plantuml.ugraphic.USegmentType;

public class UPathHand {

	private final UPath path;
	private final double defaultVariation = 4.0;

	public UPathHand(UPath source) {

		final UPath jigglePath = new UPath();

		Point2D last = new Point2D.Double();

		for (USegment segment : source) {
			final USegmentType type = segment.getSegmentType();
			if (type == USegmentType.SEG_MOVETO) {
				final double x = segment.getCoord()[0];
				final double y = segment.getCoord()[1];
				jigglePath.moveTo(x, y);
				last = new Point2D.Double(x, y);

			} else if (type == USegmentType.SEG_LINETO) {
				final double x = segment.getCoord()[0];
				final double y = segment.getCoord()[1];
				final HandJiggle jiggle = new HandJiggle(last.getX(), last.getY(), defaultVariation);
				jiggle.lineTo(x, y);
				for (USegment seg2 : jiggle.toUPath()) {
					if (seg2.getSegmentType() == USegmentType.SEG_LINETO) {
						jigglePath.lineTo(seg2.getCoord()[0], seg2.getCoord()[1]);
					}
				}
				last = new Point2D.Double(x, y);
			} else {
				this.path = source;
				return;
			}
		}
		this.path = jigglePath;
	}

	public UPath getHanddrawn() {
		return this.path;
	}

}