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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
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* +=======================================================================
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* (C) Copyright 2009-2024, Arnaud Roques
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*/
package net.sourceforge.plantuml.jsondiagram;
import net.sourceforge.plantuml.klimt.UPath;
import net.sourceforge.plantuml.klimt.UStroke;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;
import net.sourceforge.plantuml.klimt.shape.ULine;
public class Arrow {
private final XPoint2D p1;
private final XPoint2D p2;
public Arrow(XPoint2D p1, XPoint2D p2) {
this.p1 = p1;
this.p2 = p2;
}
public void drawArrow(UGraphic ug) {
ug = ug.apply(UStroke.simple());
final ULine p1p2 = ULine.create(p1, p2);
final double dist = p1.distance(p2);
final double alpha = Math.atan2(p1p2.getDX(), p1p2.getDY());
final double factor = .4;
final double factor2 = .3;
final XPoint2D p3 = getPoint(p1, alpha + Math.PI / 2, dist * factor);
final XPoint2D p4 = getPoint(p1, alpha - Math.PI / 2, dist * factor);
final XPoint2D p11 = getPoint(p1, alpha, dist * factor2);
final UPath path = UPath.none();
path.moveTo(p4);
path.lineTo(p11);
path.lineTo(p3);
path.lineTo(p2);
path.lineTo(p4);
path.closePath();
ug.draw(path);
}
private XPoint2D getPoint(XPoint2D center, double alpha, double len) {
final double x = center.getX() + len * Math.sin(alpha);
final double y = center.getY() + len * Math.cos(alpha);
return new XPoint2D(x, y);
}
}
