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Diffstat (limited to 'libjava/classpath/gnu/java/awt/java2d/CubicSegment.java')
-rw-r--r-- | libjava/classpath/gnu/java/awt/java2d/CubicSegment.java | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/java2d/CubicSegment.java b/libjava/classpath/gnu/java/awt/java2d/CubicSegment.java new file mode 100644 index 00000000000..1e568f722e7 --- /dev/null +++ b/libjava/classpath/gnu/java/awt/java2d/CubicSegment.java @@ -0,0 +1,128 @@ +/* CubicSegment.java -- Cubic segment used for BasicStroke + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.awt.java2d; + + +import java.awt.geom.Point2D; + +/** + * Cubic Bezier curve segment + */ +public class CubicSegment extends Segment +{ + public Point2D cp1; // control points + public Point2D cp2; // control points + + /** + * Constructor - takes coordinates of the starting point, + * first control point, second control point and end point, + * respecively. + */ + public CubicSegment(double x1, double y1, double c1x, double c1y, + double c2x, double c2y, double x2, double y2) + { + super(); + P1 = new Point2D.Double(x1, y1); + P2 = new Point2D.Double(x2, y2); + cp1 = new Point2D.Double(c1x, c1y); + cp2 = new Point2D.Double(c2x, c2y); + } + + public CubicSegment(Point2D p1, Point2D cp1, Point2D cp2, Point2D p2) + { + super(); + P1 = p1; + P2 = p2; + this.cp1 = cp1; + this.cp2 = cp2; + } + + /** + * Clones this segment + */ + public Object clone() + { + return new CubicSegment(P1.getX(), P1.getY(), cp1.getX(), cp1.getY(), + cp2.getX(), cp2.getY(), P2.getX(), P2.getY()); + } + + /** + * Get the "top" and "bottom" segments of this segment. + * First array element is p0 + normal, second is p0 - normal. + */ + public Segment[] getDisplacedSegments(double radius) + { + this.radius = radius; + double x0 = P1.getX(); + double y0 = P1.getY(); + double x1 = cp1.getX(); + double y1 = cp1.getY(); + double x2 = cp2.getX(); + double y2 = cp2.getY(); + double x3 = P2.getX(); + double y3 = P2.getY(); + double[] p1 = normal(x0, y0, x1, y1); + double[] p2 = normal(x2, y2, x3, y3); + + + // FIXME: Doesn't compile. + // return new Segment[]{s1, s2}; + return new Segment[0]; + } + + public void reverse() + { + Point2D temp = P1; + P1 = P2; + P2 = temp; + temp = cp1; + cp1 = cp2; + cp2 = temp; + } + + public double[] first() + { + return new double[]{cp1.getX(), cp1.getY()}; + } + + public double[] last() + { + return new double[]{cp2.getX(), cp2.getY()}; + } +} // class CubicSegment |