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PlantUML is a component that allows to quickly write diagrams from text.
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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
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 * (C) Copyright 2009-2024, Arnaud Roques
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 * 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 Apache Software License.
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 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
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 * http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing, software
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
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 * messages are usually generated on welcome or error images and never on
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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 APACHE license.
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 * The generated images can then be used without any reference to the APACHE 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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 * This is the IGY distribution (Install GraphViz by Yourself).
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 * (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
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 * 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
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 *
 */
package net.sourceforge.plantuml.svek.extremity;

import net.sourceforge.plantuml.klimt.UStroke;
import net.sourceforge.plantuml.klimt.UTranslate;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;
import net.sourceforge.plantuml.klimt.shape.UEllipse;
import net.sourceforge.plantuml.klimt.shape.ULine;

class MiddleSubset extends Extremity {

	private final double radius = 6;
	private final double length = 10;

	private final double angle;
	private final boolean reverse;

	public MiddleSubset(double angle, boolean reverse) {
		this.angle = angle;
		this.reverse = reverse;
	}

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

	public void drawU(UGraphic ug) {
		ug = ug.apply(UStroke.withThickness(1.5));

		final double rotate = reverse ? -45 : 135;

		ug.apply(new UTranslate(-radius, -radius)).draw(new UEllipse(2 * radius, 2 * radius, angle + rotate, 180));

		final double sin = Math.sin(Math.toRadians(angle + rotate));
		final double cos = Math.cos(Math.toRadians(angle + rotate));

		ug.apply(new UTranslate(radius * cos, radius * -sin)).draw(new ULine(length * sin, length * cos));
		ug.apply(new UTranslate(radius * -cos, radius * sin)).draw(new ULine(length * sin, length * cos));
	}

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

}