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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2013, 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: 9786 $
*
*/
package net.sourceforge.plantuml.graph;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import net.sourceforge.plantuml.cucadiagram.LinkType;
import net.sourceforge.plantuml.geom.Box;
import net.sourceforge.plantuml.geom.LineSegmentInt;
import net.sourceforge.plantuml.geom.PolylineBreakeable;
public class GeneralPathFactory {
private final LinkType linkType;
public GeneralPathFactory(LinkType linkType) {
this.linkType = linkType;
}
public Shape getLink(PolylineBreakeable polyline, Box b1, Box b2) {
final LineSegmentInt directSegment = new LineSegmentInt(b1.getCenterX(), b1.getCenterY(), b2.getCenterX(), b2
.getCenterY());
assert b1.intersect(directSegment).length == 1;
assert b2.intersect(directSegment).length == 1;
// final Point2D.Double start = polyline.clipStart(b1);
// final Point2D.Double end = polyline.clipEnd(b2);
final GeneralPath generalPath = polyline.asGeneralPath();
// addSymbol(generalPath, start, polyline.getFirst(), end,
// polyline.getLast());
return generalPath;
}
private void addSymbol(GeneralPath generalPath, Point2D.Double firstPoint, LineSegmentInt firstSeg,
Point2D.Double lastPoint, LineSegmentInt lastSeg) {
// if (linkType.equals(LinkType.AGREGATION) || linkType.equals(LinkType.COMPOSITION)) {
// addSymbolDiamond(generalPath, lastPoint, lastSeg);
// } else if (linkType.equals(LinkType.AGREGATION_INV) || linkType.equals(LinkType.COMPOSITION_INV)) {
// addSymbolDiamondInv(generalPath, firstPoint, firstSeg);
// } else if (linkType.equals(LinkType.NAVASSOC) || linkType.equals(LinkType.NAVASSOC_DASHED)) {
// addSymbolNavasoc(generalPath, lastPoint, lastSeg);
// } else if (linkType.equals(LinkType.NAVASSOC_INV) || linkType.equals(LinkType.NAVASSOC_DASHED_INV)) {
// addSymbolNavasocInv(generalPath, firstPoint, firstSeg);
// } else if (linkType.equals(LinkType.EXTENDS_INV) || linkType.equals(LinkType.IMPLEMENTS_INV)) {
// addSymbolExtends(generalPath, firstPoint, firstSeg);
// } else if (linkType.equals(LinkType.EXTENDS) || linkType.equals(LinkType.IMPLEMENTS)) {
// addSymbolExtendsInv(generalPath, lastPoint, lastSeg);
// } else {
// assert linkType.equals(LinkType.ASSOCIED) || linkType.equals(LinkType.ASSOCIED_DASHED);
// }
}
private void addSymbolDiamond(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg) {
final Polygon arrow = new Polygon();
arrow.addPoint(0, 0);
arrow.addPoint(-10, 6);
arrow.addPoint(-20, 0);
arrow.addPoint(-10, -6);
appendAndRotate(generalPath, point, seg, arrow);
}
private void addSymbolDiamondInv(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg) {
final Polygon arrow = new Polygon();
arrow.addPoint(0, 0);
arrow.addPoint(10, 6);
arrow.addPoint(20, 0);
arrow.addPoint(10, -6);
appendAndRotate(generalPath, point, seg, arrow);
}
private void addSymbolNavasocInv(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg) {
final Polygon arrow = new Polygon();
arrow.addPoint(0, 0);
arrow.addPoint(13, -8);
arrow.addPoint(6, 0);
arrow.addPoint(13, 8);
appendAndRotate(generalPath, point, seg, arrow);
}
private void addSymbolNavasoc(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg) {
final Polygon arrow = new Polygon();
arrow.addPoint(0, 0);
arrow.addPoint(-13, -8);
arrow.addPoint(-6, 0);
arrow.addPoint(-13, 8);
appendAndRotate(generalPath, point, seg, arrow);
}
private void addSymbolExtends(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg) {
final Polygon arrow = new Polygon();
arrow.addPoint(0, 0);
arrow.addPoint(25, 7);
arrow.addPoint(25, -7);
appendAndRotate(generalPath, point, seg, arrow);
}
private void addSymbolExtendsInv(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg) {
final Polygon arrow = new Polygon();
arrow.addPoint(0, 0);
arrow.addPoint(-25, 7);
arrow.addPoint(-25, -7);
appendAndRotate(generalPath, point, seg, arrow);
}
private void appendAndRotate(GeneralPath generalPath, Point2D.Double point, LineSegmentInt seg, final Shape shape) {
final AffineTransform at = AffineTransform.getTranslateInstance(point.x, point.y);
final double theta = seg.getAngle();
at.rotate(theta);
final Shape r = at.createTransformedShape(shape);
generalPath.append(r, false);
}
}