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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2020, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* 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.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.graph2;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.QuadCurve2D;
import java.util.ArrayList;
import java.util.List;
public class Polyline2 {
private final List<Line2D.Double> lines = new ArrayList<Line2D.Double>();
private Point2D lastCurrent;
private final Point2D end;
public Polyline2(Point2D start, Point2D end) {
lastCurrent = start;
this.end = end;
}
public void addLine(Line2D.Double newLine) {
// Log.println("# Polyline2::addLine " +
// GeomUtils.toString(newLine));
if (lastCurrent.equals(newLine.getP1()) == false) {
lines.add(new Line2D.Double(lastCurrent, newLine.getP1()));
}
lines.add(newLine);
lastCurrent = newLine.getP2();
}
private boolean debug = false;
public void draw(Graphics2D g2d) {
close();
if (debug) {
g2d.setColor(Color.GREEN);
drawDebug(g2d);
}
g2d.setColor(Color.BLUE);
final List<Point2D.Double> centers = new ArrayList<Point2D.Double>();
for (Line2D.Double l : lines) {
centers.add(GeomUtils.getCenter(l));
}
g2d.draw(new Line2D.Double(lines.get(0).getP1(), centers.get(0)));
g2d.draw(new Line2D.Double(centers.get(centers.size() - 1), end));
for (int i = 0; i < lines.size() - 1; i++) {
final Point2D c1 = centers.get(i);
final Point2D c2 = centers.get(i + 1);
final Point2D ctrl = lines.get(i).getP2();
assert ctrl.equals(lines.get(i + 1).getP1());
final QuadCurve2D.Double quad = new QuadCurve2D.Double(c1.getX(), c1.getY(), ctrl.getX(), ctrl.getY(), c2
.getX(), c2.getY());
g2d.draw(quad);
}
if (debug) {
for (Point2D.Double c : centers) {
GeomUtils.fillPoint2D(g2d, c);
}
}
}
private void drawDebug(Graphics2D g2d) {
for (Line2D.Double l : lines) {
g2d.draw(l);
GeomUtils.fillPoint2D(g2d, l.getP1());
GeomUtils.fillPoint2D(g2d, l.getP2());
}
}
private void close() {
if (lastCurrent.equals(end) == false) {
lines.add(new Line2D.Double(lastCurrent, end));
}
}
}
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