mirror of git://gcc.gnu.org/git/gcc.git
119 lines
3.4 KiB
Java
119 lines
3.4 KiB
Java
/* LineSegment.java -- Line segment used for BasicStroke
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.awt.java2d;
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import java.awt.geom.Point2D;
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public class LineSegment extends Segment
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{
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public LineSegment(double x1, double y1, double x2, double y2)
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{
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super();
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P1 = new Point2D.Double(x1, y1);
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P2 = new Point2D.Double(x2, y2);
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}
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public LineSegment(Point2D p1, Point2D p2)
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{
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super();
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P1 = (Point2D) p1.clone();
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P2 = (Point2D) p2.clone();
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}
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/**
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* Clones this segment
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*/
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public Object clone()
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{
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LineSegment segment = null;
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try
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{
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segment = (LineSegment) super.clone();
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segment.P1 = (Point2D) P1.clone();
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segment.P2 = (Point2D) P2.clone();
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}
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catch (CloneNotSupportedException cnse)
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{
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InternalError ie = new InternalError();
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ie.initCause(cnse);
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throw ie;
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}
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return segment;
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}
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/**
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* Get the "top" and "bottom" segments of this segment.
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* First array element is p0 + normal, second is p0 - normal.
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*/
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public Segment[] getDisplacedSegments(double radius)
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{
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this.radius = radius;
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double x0 = P1.getX();
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double y0 = P1.getY();
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double x1 = P2.getX();
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double y1 = P2.getY();
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double[] p = normal(x0, y0, x1, y1);
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Segment s1 = (new LineSegment(x0 + p[0], y0 + p[1],
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x1 + p[0], y1 + p[1] ));
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Segment s2 = (new LineSegment(x0 - p[0], y0 - p[1],
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x1 - p[0], y1 - p[1] ));
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return new Segment[]{s1, s2};
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}
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public void reverse()
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{
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Point2D p = P1;
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P1 = P2;
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P2 = p;
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}
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public double[] cp1()
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{
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return new double[]{P2.getX(), P2.getY()};
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}
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public double[] cp2()
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{
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return new double[]{P1.getX(), P1.getY()};
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}
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} // class LineSegment
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