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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2023, 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.timingdiagram.graphic;
import java.awt.geom.Point2D;
import net.sourceforge.plantuml.ISkinSimple;
import net.sourceforge.plantuml.awt.geom.Dimension2D;
import net.sourceforge.plantuml.cucadiagram.Display;
import net.sourceforge.plantuml.cucadiagram.WithLinkType;
import net.sourceforge.plantuml.graphic.FontConfiguration;
import net.sourceforge.plantuml.graphic.HorizontalAlignment;
import net.sourceforge.plantuml.graphic.TextBlock;
import net.sourceforge.plantuml.graphic.UDrawable;
import net.sourceforge.plantuml.ugraphic.UFont;
import net.sourceforge.plantuml.ugraphic.UGraphic;
import net.sourceforge.plantuml.ugraphic.ULine;
import net.sourceforge.plantuml.ugraphic.UPolygon;
import net.sourceforge.plantuml.ugraphic.UTranslate;
import net.sourceforge.plantuml.ugraphic.color.HColor;
public class TimeArrow implements UDrawable {
private final Point2D start;
private final Point2D end;
private final Display label;
private final ISkinSimple spriteContainer;
private final WithLinkType type;
public static TimeArrow create(IntricatedPoint pt1, IntricatedPoint pt2, Display label, ISkinSimple spriteContainer,
WithLinkType type) {
final TimeArrow arrow1 = new TimeArrow(pt1.getPointA(), pt2.getPointA(), label, spriteContainer, type);
final TimeArrow arrow2 = new TimeArrow(pt1.getPointA(), pt2.getPointB(), label, spriteContainer, type);
final TimeArrow arrow3 = new TimeArrow(pt1.getPointB(), pt2.getPointA(), label, spriteContainer, type);
final TimeArrow arrow4 = new TimeArrow(pt1.getPointB(), pt2.getPointB(), label, spriteContainer, type);
return shorter(arrow1, arrow2, arrow3, arrow4);
}
private TimeArrow(Point2D start, Point2D end, Display label, ISkinSimple spriteContainer, WithLinkType type) {
this.start = start;
this.type = type;
this.end = end;
this.label = label;
this.spriteContainer = spriteContainer;
}
private double getAngle() {
return Math.atan2(end.getX() - start.getX(), end.getY() - start.getY());
}
private static TimeArrow shorter(TimeArrow arrow1, TimeArrow arrow2) {
if (arrow1.len() < arrow2.len()) {
return arrow1;
}
return arrow2;
}
private static TimeArrow shorter(TimeArrow arrow1, TimeArrow arrow2, TimeArrow arrow3, TimeArrow arrow4) {
return shorter(shorter(arrow1, arrow2), shorter(arrow3, arrow4));
}
private double len() {
return start.distance(end);
}
public TimeArrow translate(UTranslate translate) {
return new TimeArrow(translate.getTranslated(start), translate.getTranslated(end), label, spriteContainer,
type);
}
public static Point2D onCircle(Point2D pt, double alpha) {
final double radius = 8;
final double x = pt.getX() - Math.sin(alpha) * radius;
final double y = pt.getY() - Math.cos(alpha) * radius;
return new Point2D.Double(x, y);
}
private FontConfiguration getFontConfiguration() {
final UFont font = UFont.serif(14);
final HColor color = type.getSpecificColor();
return FontConfiguration.create(font, color, color, false);
}
public void drawU(UGraphic ug) {
final double angle = getAngle();
ug = ug.apply(type.getSpecificColor()).apply(type.getUStroke());
final ULine line = new ULine(end.getX() - start.getX(), end.getY() - start.getY());
ug.apply(new UTranslate(start)).draw(line);
final double delta = 20.0 * Math.PI / 180.0;
final Point2D pt1 = onCircle(end, angle + delta);
final Point2D pt2 = onCircle(end, angle - delta);
final UPolygon polygon = new UPolygon();
polygon.addPoint(pt1.getX(), pt1.getY());
polygon.addPoint(pt2.getX(), pt2.getY());
polygon.addPoint(end.getX(), end.getY());
ug = ug.apply(type.getSpecificColor().bg());
ug.draw(polygon);
final TextBlock textLabel = label.create(getFontConfiguration(), HorizontalAlignment.LEFT, spriteContainer);
double xText = (pt1.getX() + pt2.getX()) / 2;
double yText = (pt1.getY() + pt2.getY()) / 2;
if (start.getY() < end.getY()) {
final Dimension2D dimLabel = textLabel.calculateDimension(ug.getStringBounder());
yText -= dimLabel.getHeight();
}
textLabel.drawU(ug.apply(new UTranslate(xText, yText)));
}
}
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