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PlantUML is a component that allows to quickly write diagrams from text.
// 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.klimt.shape;
import net.sourceforge.plantuml.klimt.AbstractShadowable;
import net.sourceforge.plantuml.klimt.UShapeSized;
import net.sourceforge.plantuml.klimt.geom.XDimension2D;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;
public class UEllipse extends AbstractShadowable implements UShapeSized {
private final double width;
private final double height;
private final double start;
private final double extend;
public static UEllipse build(double width, double height) {
return new UEllipse(width, height, 0, 0);
}
public UEllipse(double width, double height, double start, double extend) {
this.width = width;
this.height = height;
this.start = start;
this.extend = extend;
}
public double getWidth() {
return width;
}
public double getHeight() {
return height;
}
public final double getStart() {
return start;
}
public final double getExtend() {
return extend;
}
public XDimension2D getDimension() {
return new XDimension2D(width, height);
}
public UEllipse bigger(double more) {
final UEllipse result = UEllipse.build(width + more, height + more);
result.setDeltaShadow(getDeltaShadow());
return result;
}
public UEllipse scale(double factor) {
final UEllipse result = UEllipse.build(width * factor, height * factor);
result.setDeltaShadow(getDeltaShadow());
return result;
}
public double getStartingX(double y) {
y = y / height * 2;
final double x = 1 - Math.sqrt(1 - (y - 1) * (y - 1));
return x * width / 2;
}
public double getEndingX(double y) {
y = y / height * 2;
final double x = 1 + Math.sqrt(1 - (y - 1) * (y - 1));
return x * width / 2;
}
public XPoint2D getPointAtAngle(double alpha) {
final double x = width / 2 + width / 2 * Math.cos(alpha);
final double y = height / 2 + height / 2 * Math.sin(alpha);
return new XPoint2D(x, y);
}
}