4f9533c772
Imported GNU Classpath 0.90
* scripts/makemake.tcl: LocaleData.java moved to gnu/java/locale.
* sources.am: Regenerated.
* gcj/javaprims.h: Regenerated.
* Makefile.in: Regenerated.
* gcj/Makefile.in: Regenerated.
* include/Makefile.in: Regenerated.
* testsuite/Makefile.in: Regenerated.
* gnu/java/lang/VMInstrumentationImpl.java: New override.
* gnu/java/net/local/LocalSocketImpl.java: Likewise.
* gnu/classpath/jdwp/VMMethod.java: Likewise.
* gnu/classpath/jdwp/VMVirtualMachine.java: Update to latest
interface.
* java/lang/Thread.java: Add UncaughtExceptionHandler.
* java/lang/reflect/Method.java: Implements GenericDeclaration and
isSynthetic(),
* java/lang/reflect/Field.java: Likewise.
* java/lang/reflect/Constructor.java
* java/lang/Class.java: Implements Type, GenericDeclaration,
getSimpleName() and getEnclosing*() methods.
* java/lang/Class.h: Add new public methods.
* java/lang/Math.java: Add signum(), ulp() and log10().
* java/lang/natMath.cc (log10): New function.
* java/security/VMSecureRandom.java: New override.
* java/util/logging/Logger.java: Updated to latest classpath
version.
* java/util/logging/LogManager.java: New override.
From-SVN: r113887
131 lines
3.6 KiB
Java
131 lines
3.6 KiB
Java
/* Segment.java -- Abstract 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;
|
|
|
|
public abstract class Segment implements Cloneable
|
|
{
|
|
// segment type, PathIterator segment types are used.
|
|
public Point2D P1;
|
|
public Point2D P2;
|
|
public Segment next;
|
|
public Segment last;
|
|
protected double radius;
|
|
|
|
public Segment()
|
|
{
|
|
P1 = P2 = null;
|
|
next = null;
|
|
last = this;
|
|
}
|
|
|
|
public void add(Segment newsegment)
|
|
{
|
|
last.next = newsegment;
|
|
last = last.next;
|
|
}
|
|
|
|
/**
|
|
* Reverses the orientation of the whole polygon
|
|
*/
|
|
public void reverseAll()
|
|
{
|
|
reverse();
|
|
Segment v = next;
|
|
Segment former = this;
|
|
next = null;
|
|
|
|
while (v != null)
|
|
{
|
|
v.reverse();
|
|
v.last = this;
|
|
Segment oldnext = v.next;
|
|
v.next = former;
|
|
|
|
former = v;
|
|
v = oldnext; // move to the next in list
|
|
}
|
|
}
|
|
|
|
public String toString()
|
|
{
|
|
return "Segment:"+P1+", "+P2;
|
|
}
|
|
|
|
/**
|
|
* Get the normal vector to the slope of the line.
|
|
* Returns: 0.5*width*(norm of derivative of the (x0,y0)-(x1,y1) vector)
|
|
*/
|
|
protected double[] normal(double x0, double y0, double x1, double y1)
|
|
{
|
|
double dx = (x1 - x0);
|
|
double dy = (y1 - y0);
|
|
if( dy == 0 )
|
|
{
|
|
dy = radius * ((dx > 0)?1:-1);
|
|
dx = 0;
|
|
}
|
|
else if( dx == 0 )
|
|
{
|
|
dx = radius * ((dy > 0)?-1:1);
|
|
dy = 0;
|
|
}
|
|
else
|
|
{
|
|
double N = Math.sqrt(dx * dx + dy * dy);
|
|
double odx = dx;
|
|
dx = -radius * dy / N;
|
|
dy = radius * odx / N;
|
|
}
|
|
return new double[]{ dx, dy };
|
|
}
|
|
|
|
public abstract void reverse();
|
|
|
|
/**
|
|
* Get the "top" and "bottom" segments of a segment.
|
|
* First array element is p0 + normal, second is p0 - normal.
|
|
*/
|
|
public abstract Segment[] getDisplacedSegments(double radius);
|
|
|
|
public abstract double[] first();
|
|
public abstract double[] last();
|
|
|
|
}
|