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112 lines
3.0 KiB
Java
112 lines
3.0 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2024, Arnaud Roques
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*
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* Project Info: https://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* https://plantuml.com/patreon (only 1$ per month!)
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* https://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*
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*/
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package net.sourceforge.plantuml.klimt.shape;
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import net.sourceforge.plantuml.klimt.AbstractShadowable;
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import net.sourceforge.plantuml.klimt.UShapeSized;
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import net.sourceforge.plantuml.klimt.geom.XDimension2D;
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import net.sourceforge.plantuml.klimt.geom.XPoint2D;
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public class UEllipse extends AbstractShadowable implements UShapeSized {
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private final double width;
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private final double height;
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private final double start;
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private final double extend;
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public UEllipse(double width, double height) {
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this(width, height, 0, 0);
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}
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public UEllipse(double width, double height, double start, double extend) {
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this.width = width;
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this.height = height;
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this.start = start;
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this.extend = extend;
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}
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public double getWidth() {
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return width;
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}
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public double getHeight() {
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return height;
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}
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public final double getStart() {
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return start;
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}
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public final double getExtend() {
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return extend;
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}
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public XDimension2D getDimension() {
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return new XDimension2D(width, height);
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}
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public UEllipse bigger(double more) {
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final UEllipse result = new UEllipse(width + more, height + more);
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result.setDeltaShadow(getDeltaShadow());
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return result;
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}
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public UEllipse scale(double factor) {
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final UEllipse result = new UEllipse(width * factor, height * factor);
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result.setDeltaShadow(getDeltaShadow());
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return result;
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}
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public double getStartingX(double y) {
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y = y / height * 2;
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final double x = 1 - Math.sqrt(1 - (y - 1) * (y - 1));
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return x * width / 2;
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}
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public double getEndingX(double y) {
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y = y / height * 2;
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final double x = 1 + Math.sqrt(1 - (y - 1) * (y - 1));
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return x * width / 2;
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}
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public XPoint2D getPointAtAngle(double alpha) {
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final double x = width / 2 + width / 2 * Math.cos(alpha);
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final double y = height / 2 + height / 2 * Math.sin(alpha);
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return new XPoint2D(x, y);
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}
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}
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