mirror of https://github.com/octoleo/plantuml.git
157 lines
5.3 KiB
Java
157 lines
5.3 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 2009-2023, Arnaud Roques
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*
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* Project Info: http://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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* http://plantuml.com/patreon (only 1$ per month!)
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* http://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.anim;
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import java.awt.geom.AffineTransform;
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import java.util.Objects;
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import java.util.StringTokenizer;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import net.sourceforge.plantuml.StringUtils;
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import net.sourceforge.plantuml.awt.geom.XDimension2D;
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import net.sourceforge.plantuml.awt.geom.XPoint2D;
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import net.sourceforge.plantuml.ugraphic.MinMax;
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public class AffineTransformation {
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// ::remove folder when WASM
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static private final Pattern rotate = Pattern.compile("rotate\\s+(-?\\d+\\.?\\d*)");
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static private final Pattern shear = Pattern.compile("shear\\s+(-?\\d+\\.?\\d*)\\s+(-?\\d+\\.?\\d*)");
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static private final Pattern translate = Pattern.compile("translate\\s+(-?\\d+\\.?\\d*)\\s+(-?\\d+\\.?\\d*)");
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static private final Pattern scale = Pattern.compile("scale\\s+(-?\\d+\\.?\\d*)\\s+(-?\\d+\\.?\\d*)");
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static private final Pattern color = Pattern.compile("color\\s+.*");
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private final AffineTransform affineTransform;
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private XDimension2D dimension;
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private AffineTransformation(AffineTransform affineTransform) {
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this.affineTransform = Objects.requireNonNull(affineTransform);
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}
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private AffineTransformation compose(AffineTransformation other) {
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final AffineTransform tmp = new AffineTransform(this.affineTransform);
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tmp.concatenate(other.affineTransform);
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return new AffineTransformation(tmp);
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}
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public static AffineTransformation from(AffineTransform affineTransform) {
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return new AffineTransformation(affineTransform);
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}
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static AffineTransformation create(String value) {
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final StringTokenizer st = new StringTokenizer(value, "|");
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AffineTransformation result = null;
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while (st.hasMoreTokens()) {
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final String s = st.nextToken();
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final AffineTransformation tmp = createSimple(s);
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if (tmp != null) {
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if (result == null) {
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result = tmp;
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} else {
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result = result.compose(tmp);
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}
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}
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}
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return result;
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}
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private static AffineTransformation createSimple(String value) {
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Matcher m = rotate.matcher(StringUtils.trin(value));
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if (m.find()) {
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final double angle = Double.parseDouble(m.group(1));
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return new AffineTransformation(AffineTransform.getRotateInstance(angle * Math.PI / 180.0));
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}
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m = shear.matcher(value);
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if (m.find()) {
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final double shx = Double.parseDouble(m.group(1));
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final double shy = Double.parseDouble(m.group(2));
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return new AffineTransformation(AffineTransform.getShearInstance(shx, shy));
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}
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m = translate.matcher(value);
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if (m.find()) {
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final double tx = Double.parseDouble(m.group(1));
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final double ty = Double.parseDouble(m.group(2));
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return new AffineTransformation(AffineTransform.getTranslateInstance(tx, ty));
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}
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m = scale.matcher(value);
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if (m.find()) {
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final double scalex = Double.parseDouble(m.group(1));
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final double scaley = Double.parseDouble(m.group(2));
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return new AffineTransformation(AffineTransform.getScaleInstance(scalex, scaley));
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}
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m = color.matcher(value);
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if (m.find()) {
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return new AffineTransformation(new AffineTransform());
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}
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return null;
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}
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public final AffineTransform getAffineTransform() {
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return getAffineTransform(dimension);
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}
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private AffineTransform getAffineTransform(XDimension2D dimension) {
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if (dimension == null) {
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throw new IllegalStateException();
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}
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final AffineTransform at = AffineTransform.getTranslateInstance(dimension.getWidth() / 2,
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dimension.getHeight() / 2);
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at.concatenate(affineTransform);
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at.translate(-dimension.getWidth() / 2, -dimension.getHeight() / 2);
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return at;
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}
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public void setDimension(XDimension2D dim) {
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this.dimension = dim;
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}
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public MinMax getMinMax(XDimension2D rect) {
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MinMax result = MinMax.getEmpty(false);
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final AffineTransform tmp = getAffineTransform(rect);
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result = result.addPoint(new XPoint2D(0, 0).transform(tmp));
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result = result.addPoint(new XPoint2D(0, rect.getHeight()).transform(tmp));
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result = result.addPoint(new XPoint2D(rect.getWidth(), 0).transform(tmp));
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result = result.addPoint(new XPoint2D(rect.getWidth(), rect.getHeight()).transform(tmp));
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return result;
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}
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}
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