mirror of https://github.com/octoleo/plantuml.git
83 lines
2.7 KiB
Java
83 lines
2.7 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.posimo;
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import net.sourceforge.plantuml.klimt.geom.XLine2D;
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import net.sourceforge.plantuml.klimt.geom.XPoint2D;
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import net.sourceforge.plantuml.klimt.geom.XRectangle2D;
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public class LineRectIntersection {
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private final XPoint2D inter;
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public LineRectIntersection(XLine2D line, XRectangle2D rect) {
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final XPoint2D p1 = new XPoint2D(rect.getMinX(), rect.getMinY());
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final XPoint2D p2 = new XPoint2D(rect.getMaxX(), rect.getMinY());
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final XPoint2D p3 = new XPoint2D(rect.getMaxX(), rect.getMaxY());
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final XPoint2D p4 = new XPoint2D(rect.getMinX(), rect.getMaxY());
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final XPoint2D inter1 = new LineSegmentIntersection(XLine2D.line(p1, p2), line).getIntersection();
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final XPoint2D inter2 = new LineSegmentIntersection(XLine2D.line(p2, p3), line).getIntersection();
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final XPoint2D inter3 = new LineSegmentIntersection(XLine2D.line(p3, p4), line).getIntersection();
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final XPoint2D inter4 = new LineSegmentIntersection(XLine2D.line(p4, p1), line).getIntersection();
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final XPoint2D o = line.getP1();
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inter = getCloser(o, inter1, inter2, inter3, inter4);
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}
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public static XPoint2D getCloser(final XPoint2D o, final XPoint2D... other) {
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double minDist = Double.MAX_VALUE;
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XPoint2D result = null;
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for (XPoint2D pt : other)
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if (pt != null) {
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final double dist = pt.distanceSq(o);
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if (dist < minDist) {
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minDist = dist;
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result = pt;
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}
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}
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return result;
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}
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public final XPoint2D getIntersection() {
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return inter;
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}
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}
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