mirror of https://github.com/octoleo/plantuml.git
125 lines
4.2 KiB
Java
125 lines
4.2 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.geom;
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public class PositionableUtils {
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// ::remove file when __HAXE__
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static private XRectangle2D convert(Positionable positionable) {
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final XPoint2D position = positionable.getPosition();
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final XDimension2D size = positionable.getSize();
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return new XRectangle2D(position.getX(), position.getY(), size.getWidth(), size.getHeight());
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}
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static public boolean intersect(Positionable big, Positionable small) {
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final XRectangle2D bigR = convert(big);
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final XRectangle2D smallR = convert(small);
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return bigR.intersects(smallR);
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}
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static public Positionable addMargin(final Positionable pos, final double widthMargin, final double heightMargin) {
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return new Positionable() {
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public XPoint2D getPosition() {
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final XPoint2D p = pos.getPosition();
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return new XPoint2D(p.getX() - widthMargin, p.getY() - heightMargin);
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}
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public XDimension2D getSize() {
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return pos.getSize().delta(2 * widthMargin, 2 * heightMargin);
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}
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public void moveSvek(double deltaX, double deltaY) {
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pos.moveSvek(deltaX, deltaY);
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}
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};
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}
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static private XPoint2D getCenter(Positionable p) {
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final XPoint2D pt = p.getPosition();
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final XDimension2D dim = p.getSize();
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return new XPoint2D(pt.getX() + dim.getWidth() / 2, pt.getY() + dim.getHeight() / 2);
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}
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static private Positionable move(Positionable p, double deltaX, double deltaY) {
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final XPoint2D pt = p.getPosition();
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final XDimension2D dim = p.getSize();
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return new PositionableImpl(pt.getX() + deltaX, pt.getY() + deltaY, dim);
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}
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public static Positionable moveAwayFrom(Positionable fixe, Positionable toMove) {
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final XPoint2D centerFixe = getCenter(fixe);
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final XPoint2D centerToMove = getCenter(toMove);
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// final XPoint2D pt = toMove.getPosition();
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// return new PositionableImpl(pt.getX() + 20, pt.getY(),
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// toMove.getSize());
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final double deltaX = centerToMove.getX() - centerFixe.getX();
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final double deltaY = centerToMove.getY() - centerFixe.getY();
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double min = 0.0;
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if (doesIntersectWithThisCoef(fixe, toMove, deltaX, deltaY, min) == false)
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throw new IllegalArgumentException();
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double max = 0.1;
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while (doesIntersectWithThisCoef(fixe, toMove, deltaX, deltaY, max))
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max = max * 2;
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for (int i = 0; i < 5; i++) {
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assert doesIntersectWithThisCoef(fixe, toMove, deltaX, deltaY, min);
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assert doesIntersectWithThisCoef(fixe, toMove, deltaX, deltaY, max) == false;
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final double candidat = (min + max) / 2.0;
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if (doesIntersectWithThisCoef(fixe, toMove, deltaX, deltaY, candidat))
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min = candidat;
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else
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max = candidat;
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// Log.println("min=" + min + " max=" + max);
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}
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final double candidat = (min + max) / 2.0;
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return move(toMove, deltaX * candidat, deltaY * candidat);
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}
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private static boolean doesIntersectWithThisCoef(Positionable fixe, Positionable toMove, double deltaX,
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double deltaY, double c) {
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final Positionable result = move(toMove, deltaX * c, deltaY * c);
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return intersect(fixe, result);
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}
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}
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