--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/awt/geom/QuadIterator.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,152 @@
+/*
+ * Copyright 1997 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package java.awt.geom;
+
+import java.util.*;
+
+/**
+ * A utility class to iterate over the path segments of a quadratic curve
+ * segment through the PathIterator interface.
+ *
+ * @author      Jim Graham
+ */
+class QuadIterator implements PathIterator {
+    QuadCurve2D quad;
+    AffineTransform affine;
+    int index;
+
+    QuadIterator(QuadCurve2D q, AffineTransform at) {
+        this.quad = q;
+        this.affine = at;
+    }
+
+    /**
+     * Return the winding rule for determining the insideness of the
+     * path.
+     * @see #WIND_EVEN_ODD
+     * @see #WIND_NON_ZERO
+     */
+    public int getWindingRule() {
+        return WIND_NON_ZERO;
+    }
+
+    /**
+     * Tests if there are more points to read.
+     * @return true if there are more points to read
+     */
+    public boolean isDone() {
+        return (index > 1);
+    }
+
+    /**
+     * Moves the iterator to the next segment of the path forwards
+     * along the primary direction of traversal as long as there are
+     * more points in that direction.
+     */
+    public void next() {
+        index++;
+    }
+
+    /**
+     * Returns the coordinates and type of the current path segment in
+     * the iteration.
+     * The return value is the path segment type:
+     * SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE.
+     * A float array of length 6 must be passed in and may be used to
+     * store the coordinates of the point(s).
+     * Each point is stored as a pair of float x,y coordinates.
+     * SEG_MOVETO and SEG_LINETO types will return one point,
+     * SEG_QUADTO will return two points,
+     * SEG_CUBICTO will return 3 points
+     * and SEG_CLOSE will not return any points.
+     * @see #SEG_MOVETO
+     * @see #SEG_LINETO
+     * @see #SEG_QUADTO
+     * @see #SEG_CUBICTO
+     * @see #SEG_CLOSE
+     */
+    public int currentSegment(float[] coords) {
+        if (isDone()) {
+            throw new NoSuchElementException("quad iterator iterator out of bounds");
+        }
+        int type;
+        if (index == 0) {
+            coords[0] = (float) quad.getX1();
+            coords[1] = (float) quad.getY1();
+            type = SEG_MOVETO;
+        } else {
+            coords[0] = (float) quad.getCtrlX();
+            coords[1] = (float) quad.getCtrlY();
+            coords[2] = (float) quad.getX2();
+            coords[3] = (float) quad.getY2();
+            type = SEG_QUADTO;
+        }
+        if (affine != null) {
+            affine.transform(coords, 0, coords, 0, index == 0 ? 1 : 2);
+        }
+        return type;
+    }
+
+    /**
+     * Returns the coordinates and type of the current path segment in
+     * the iteration.
+     * The return value is the path segment type:
+     * SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE.
+     * A double array of length 6 must be passed in and may be used to
+     * store the coordinates of the point(s).
+     * Each point is stored as a pair of double x,y coordinates.
+     * SEG_MOVETO and SEG_LINETO types will return one point,
+     * SEG_QUADTO will return two points,
+     * SEG_CUBICTO will return 3 points
+     * and SEG_CLOSE will not return any points.
+     * @see #SEG_MOVETO
+     * @see #SEG_LINETO
+     * @see #SEG_QUADTO
+     * @see #SEG_CUBICTO
+     * @see #SEG_CLOSE
+     */
+    public int currentSegment(double[] coords) {
+        if (isDone()) {
+            throw new NoSuchElementException("quad iterator iterator out of bounds");
+        }
+        int type;
+        if (index == 0) {
+            coords[0] = quad.getX1();
+            coords[1] = quad.getY1();
+            type = SEG_MOVETO;
+        } else {
+            coords[0] = quad.getCtrlX();
+            coords[1] = quad.getCtrlY();
+            coords[2] = quad.getX2();
+            coords[3] = quad.getY2();
+            type = SEG_QUADTO;
+        }
+        if (affine != null) {
+            affine.transform(coords, 0, coords, 0, index == 0 ? 1 : 2);
+        }
+        return type;
+    }
+}