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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
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 * 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 .
 *
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 * 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
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 * 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.
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 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
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 * 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.UStroke;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;
import net.sourceforge.plantuml.klimt.shape.UEllipse;

class ExtremityCircleConnect extends Extremity {

	private final double px;
	private final double py;
	private final XPoint2D dest;
	private final double radius = 6;
	private final double radius2 = 10;
	private final double ortho;
	private final HColor backgroundColor;

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

	public ExtremityCircleConnect(XPoint2D p1, double ortho, HColor backgroundColor) {
		this.px = p1.getX() - radius;
		this.py = p1.getY() - radius;
		this.dest = new XPoint2D(p1.getX(), p1.getY());
		this.ortho = ortho;
		this.backgroundColor = backgroundColor;
	}

	public void drawU(UGraphic ug) {
		ug = ug.apply(UStroke.withThickness(1.5)).apply(backgroundColor.bg());
		ug.apply(new UTranslate(dest.getX() - radius, dest.getY() - radius)).draw(UEllipse.build(radius * 2, radius * 2));

		final double deg = -ortho * 180 / Math.PI + 90 - 45;
		final UEllipse arc1 = new UEllipse(2 * radius2, 2 * radius2, deg, 90);
		ug.apply(new UTranslate(dest.getX() - radius2, dest.getY() - radius2)).draw(arc1);
	}
	
	@Override
	public double getDecorationLength() {
		return 10;
	}

	// private XPoint2D getPointOnCircle(double angle) {
	// final double x = px + radius + radius2 * Math.cos(angle);
	// final double y = py + radius + radius2 * Math.sin(angle);
	// return new XPoint2D(x, y);
	// }
	//
	// static private void drawLine(UGraphic ug, double x, double y, Point2D p1,
	// Point2D p2) {
	// final double dx = p2.getX() - p1.getX();
	// final double dy = p2.getY() - p1.getY();
	// ug.draw(x + p1.getX(), y + p1.getY(), new ULine(dx, dy));
	//
	// }

}