net.sourceforge.plantuml.svek.extremity.ExtremityArrow Maven / Gradle / Ivy

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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
 * https://plantuml.com/paypal
 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see .
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this LGPL license.
 *
 * The generated images can then be used without any reference to the LGPL license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.svek.extremity;

import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColors;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;
import net.sourceforge.plantuml.klimt.shape.ULine;
import net.sourceforge.plantuml.klimt.shape.UPolygon;

public class ExtremityArrow extends Extremity {

	private UPolygon polygon = new UPolygon();
	private final ULine line;
	private final XPoint2D contact;

	@Override
	public XPoint2D somePoint() {
		return contact;
	}

	public ExtremityArrow(XPoint2D p1, double angle, XPoint2D center) {
		angle = manageround(angle);
		final int xContact = buildPolygon();
		polygon.rotate(angle + Math.PI / 2);
		polygon = polygon.translate(p1.getX(), p1.getY());
		contact = new XPoint2D(p1.getX() - xContact * Math.cos(angle + Math.PI / 2),
				p1.getY() - xContact * Math.sin(angle + Math.PI / 2));
		this.line = new ULine(center.getX() - contact.getX(), center.getY() - contact.getY());
	}

	public ExtremityArrow(XPoint2D p0, double angle) {
		this.line = null;
		angle = manageround(angle);
		buildPolygon();
		polygon.rotate(angle);
		polygon = polygon.translate(p0.getX(), p0.getY());
		contact = p0;
	}

	private int buildPolygon() {
		polygon.addPoint(0, 0);
		final int xWing = 9;
		final int yAperture = 4;
		polygon.addPoint(-xWing, -yAperture);
		final int xContact = 5;
		polygon.addPoint(-xContact, 0);
		polygon.addPoint(-xWing, yAperture);
		polygon.addPoint(0, 0);
		return xContact;
	}

	@Override
	public double getDecorationLength() {
		return 6;
	}

	public void drawU(UGraphic ug) {
		final HColor color = ug.getParam().getColor();
		if (color == null)
			ug = ug.apply(HColors.none().bg());
		else
			ug = ug.apply(color.bg());

		ug.draw(polygon);
		if (line != null && line.getLength() > 2)
			ug.apply(UTranslate.point(contact)).draw(line);

	}

	public void drawLineIfTransparent(UGraphic ug) {
		final XPoint2D pt1 = polygon.getPoint(0);
		final XPoint2D pt2 = polygon.getPoint(2);
		final ULine line = ULine.create(pt1, pt2);
		ug.apply(UTranslate.point(pt1)).draw(line);

	}

}