From 4f9533c7722fa07511a94d005227961f4a4dec23 Mon Sep 17 00:00:00 2001
From: Mark Wielaard <mark@gcc.gnu.org>
Date: Thu, 18 May 2006 17:29:21 +0000
Subject: Imported GNU Classpath 0.90

       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
---
 libjava/classpath/gnu/java/awt/java2d/Segment.java | 131 +++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 libjava/classpath/gnu/java/awt/java2d/Segment.java

(limited to 'libjava/classpath/gnu/java/awt/java2d/Segment.java')

diff --git a/libjava/classpath/gnu/java/awt/java2d/Segment.java b/libjava/classpath/gnu/java/awt/java2d/Segment.java
new file mode 100644
index 00000000000..9a985f6967b
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/java2d/Segment.java
@@ -0,0 +1,131 @@
+/* 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();
+
+}
-- 
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