auto import from //depot/cupcake/@135843

1 files changed, 918 insertions, 0 deletions

diff --git a/awt/java/awt/geom/QuadCurve2D.java b/awt/java/awt/geom/QuadCurve2D.java
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+++ b/awt/java/awt/geom/QuadCurve2D.java
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+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+/**
+ * @author Denis M. Kishenko
+ * @version $Revision$
+ */
+
+package java.awt.geom;
+
+import java.awt.Rectangle;
+import java.awt.Shape;
+import java.util.NoSuchElementException;
+
+import org.apache.harmony.awt.gl.Crossing;
+import org.apache.harmony.awt.internal.nls.Messages;
+
+/**
+ * The Class QuadCurve2D is a Shape that represents a segment of a quadratic
+ * (Bezier) curve. The curved segment is determined by three points: a start
+ * point, an end point, and a control point. The line from the control point to
+ * the starting point gives the tangent to the curve at the starting point, and
+ * the line from the control point to the end point gives the tangent to the
+ * curve at the end point.
+ * 
+ * @since Android 1.0
+ */
+public abstract class QuadCurve2D implements Shape, Cloneable {
+
+    /**
+     * The Class Float is the subclass of QuadCurve2D that has all of its data
+     * values stored with float-level precision.
+     * 
+     * @since Android 1.0
+     */
+    public static class Float extends QuadCurve2D {
+
+        /**
+         * The x coordinate of the starting point of the curved segment.
+         */
+        public float x1;
+
+        /**
+         * The y coordinate of the starting point of the curved segment.
+         */
+        public float y1;
+
+        /**
+         * The x coordinate of the control point.
+         */
+        public float ctrlx;
+
+        /**
+         * The y coordinate of the control point.
+         */
+        public float ctrly;
+
+        /**
+         * The x coordinate of the end point of the curved segment.
+         */
+        public float x2;
+
+        /**
+         * The y coordinate of the end point of the curved segment.
+         */
+        public float y2;
+
+        /**
+         * Instantiates a new float-valued QuadCurve2D with all coordinate
+         * values set to zero.
+         */
+        public Float() {
+        }
+
+        /**
+         * Instantiates a new float-valued QuadCurve2D with the specified
+         * coordinate values.
+         * 
+         * @param x1
+         *            the x coordinate of the starting point of the curved
+         *            segment.
+         * @param y1
+         *            the y coordinate of the starting point of the curved
+         *            segment.
+         * @param ctrlx
+         *            the x coordinate of the control point.
+         * @param ctrly
+         *            the y coordinate of the control point.
+         * @param x2
+         *            the x coordinate of the end point of the curved segment.
+         * @param y2
+         *            the y coordinate of the end point of the curved segment.
+         */
+        public Float(float x1, float y1, float ctrlx, float ctrly, float x2, float y2) {
+            setCurve(x1, y1, ctrlx, ctrly, x2, y2);
+        }
+
+        @Override
+        public double getX1() {
+            return x1;
+        }
+
+        @Override
+        public double getY1() {
+            return y1;
+        }
+
+        @Override
+        public double getCtrlX() {
+            return ctrlx;
+        }
+
+        @Override
+        public double getCtrlY() {
+            return ctrly;
+        }
+
+        @Override
+        public double getX2() {
+            return x2;
+        }
+
+        @Override
+        public double getY2() {
+            return y2;
+        }
+
+        @Override
+        public Point2D getP1() {
+            return new Point2D.Float(x1, y1);
+        }
+
+        @Override
+        public Point2D getCtrlPt() {
+            return new Point2D.Float(ctrlx, ctrly);
+        }
+
+        @Override
+        public Point2D getP2() {
+            return new Point2D.Float(x2, y2);
+        }
+
+        @Override
+        public void setCurve(double x1, double y1, double ctrlx, double ctrly, double x2, double y2) {
+            this.x1 = (float)x1;
+            this.y1 = (float)y1;
+            this.ctrlx = (float)ctrlx;
+            this.ctrly = (float)ctrly;
+            this.x2 = (float)x2;
+            this.y2 = (float)y2;
+        }
+
+        /**
+         * Sets the data values of the curve.
+         * 
+         * @param x1
+         *            the x coordinate of the starting point of the curved
+         *            segment.
+         * @param y1
+         *            the y coordinate of the starting point of the curved
+         *            segment.
+         * @param ctrlx
+         *            the x coordinate of the control point.
+         * @param ctrly
+         *            the y coordinate of the control point.
+         * @param x2
+         *            the x coordinate of the end point of the curved segment.
+         * @param y2
+         *            the y coordinate of the end point of the curved segment.
+         */
+        public void setCurve(float x1, float y1, float ctrlx, float ctrly, float x2, float y2) {
+            this.x1 = x1;
+            this.y1 = y1;
+            this.ctrlx = ctrlx;
+            this.ctrly = ctrly;
+            this.x2 = x2;
+            this.y2 = y2;
+        }
+
+        public Rectangle2D getBounds2D() {
+            float rx0 = Math.min(Math.min(x1, x2), ctrlx);
+            float ry0 = Math.min(Math.min(y1, y2), ctrly);
+            float rx1 = Math.max(Math.max(x1, x2), ctrlx);
+            float ry1 = Math.max(Math.max(y1, y2), ctrly);
+            return new Rectangle2D.Float(rx0, ry0, rx1 - rx0, ry1 - ry0);
+        }
+    }
+
+    /**
+     * The Class Double is the subclass of QuadCurve2D that has all of its data
+     * values stored with double-level precision.
+     * 
+     * @since Android 1.0
+     */
+    public static class Double extends QuadCurve2D {
+
+        /**
+         * The x coordinate of the starting point of the curved segment.
+         */
+        public double x1;
+
+        /**
+         * The y coordinate of the starting point of the curved segment.
+         */
+        public double y1;
+
+        /**
+         * The x coordinate of the control point.
+         */
+        public double ctrlx;
+
+        /**
+         * The y coordinate of the control point.
+         */
+        public double ctrly;
+
+        /**
+         * The x coordinate of the end point of the curved segment.
+         */
+        public double x2;
+
+        /**
+         * The y coordinate of the end point of the curved segment.
+         */
+        public double y2;
+
+        /**
+         * Instantiates a new double-valued QuadCurve2D with all coordinate
+         * values set to zero.
+         */
+        public Double() {
+        }
+
+        /**
+         * Instantiates a new double-valued QuadCurve2D with the specified
+         * coordinate values.
+         * 
+         * @param x1
+         *            the x coordinate of the starting point of the curved
+         *            segment.
+         * @param y1
+         *            the y coordinate of the starting point of the curved
+         *            segment.
+         * @param ctrlx
+         *            the x coordinate of the control point.
+         * @param ctrly
+         *            the y coordinate of the control point.
+         * @param x2
+         *            the x coordinate of the end point of the curved segment.
+         * @param y2
+         *            the y coordinate of the end point of the curved segment.
+         */
+        public Double(double x1, double y1, double ctrlx, double ctrly, double x2, double y2) {
+            setCurve(x1, y1, ctrlx, ctrly, x2, y2);
+        }
+
+        @Override
+        public double getX1() {
+            return x1;
+        }
+
+        @Override
+        public double getY1() {
+            return y1;
+        }
+
+        @Override
+        public double getCtrlX() {
+            return ctrlx;
+        }
+
+        @Override
+        public double getCtrlY() {
+            return ctrly;
+        }
+
+        @Override
+        public double getX2() {
+            return x2;
+        }
+
+        @Override
+        public double getY2() {
+            return y2;
+        }
+
+        @Override
+        public Point2D getP1() {
+            return new Point2D.Double(x1, y1);
+        }
+
+        @Override
+        public Point2D getCtrlPt() {
+            return new Point2D.Double(ctrlx, ctrly);
+        }
+
+        @Override
+        public Point2D getP2() {
+            return new Point2D.Double(x2, y2);
+        }
+
+        @Override
+        public void setCurve(double x1, double y1, double ctrlx, double ctrly, double x2, double y2) {
+            this.x1 = x1;
+            this.y1 = y1;
+            this.ctrlx = ctrlx;
+            this.ctrly = ctrly;
+            this.x2 = x2;
+            this.y2 = y2;
+        }
+
+        public Rectangle2D getBounds2D() {
+            double rx0 = Math.min(Math.min(x1, x2), ctrlx);
+            double ry0 = Math.min(Math.min(y1, y2), ctrly);
+            double rx1 = Math.max(Math.max(x1, x2), ctrlx);
+            double ry1 = Math.max(Math.max(y1, y2), ctrly);
+            return new Rectangle2D.Double(rx0, ry0, rx1 - rx0, ry1 - ry0);
+        }
+    }
+
+    /*
+     * QuadCurve2D path iterator
+     */
+    /**
+     * The PathIterator for a Quad2D curve.
+     */
+    class Iterator implements PathIterator {
+
+        /**
+         * The source QuadCurve2D object.
+         */
+        QuadCurve2D c;
+
+        /**
+         * The path iterator transformation.
+         */
+        AffineTransform t;
+
+        /**
+         * The current segment index.
+         */
+        int index;
+
+        /**
+         * Constructs a new QuadCurve2D.Iterator for given curve and
+         * transformation
+         * 
+         * @param q
+         *            the source QuadCurve2D object.
+         * @param t
+         *            the AffineTransform that acts on the coordinates before
+         *            returning them (or null).
+         */
+        Iterator(QuadCurve2D q, AffineTransform t) {
+            this.c = q;
+            this.t = t;
+        }
+
+        public int getWindingRule() {
+            return WIND_NON_ZERO;
+        }
+
+        public boolean isDone() {
+            return (index > 1);
+        }
+
+        public void next() {
+            index++;
+        }
+
+        public int currentSegment(double[] coords) {
+            if (isDone()) {
+                // awt.4B=Iterator out of bounds
+                throw new NoSuchElementException(Messages.getString("awt.4B")); //$NON-NLS-1$
+            }
+            int type;
+            int count;
+            if (index == 0) {
+                type = SEG_MOVETO;
+                coords[0] = c.getX1();
+                coords[1] = c.getY1();
+                count = 1;
+            } else {
+                type = SEG_QUADTO;
+                coords[0] = c.getCtrlX();
+                coords[1] = c.getCtrlY();
+                coords[2] = c.getX2();
+                coords[3] = c.getY2();
+                count = 2;
+            }
+            if (t != null) {
+                t.transform(coords, 0, coords, 0, count);
+            }
+            return type;
+        }
+
+        public int currentSegment(float[] coords) {
+            if (isDone()) {
+                // awt.4B=Iterator out of bounds
+                throw new NoSuchElementException(Messages.getString("awt.4B")); //$NON-NLS-1$
+            }
+            int type;
+            int count;
+            if (index == 0) {
+                type = SEG_MOVETO;
+                coords[0] = (float)c.getX1();
+                coords[1] = (float)c.getY1();
+                count = 1;
+            } else {
+                type = SEG_QUADTO;
+                coords[0] = (float)c.getCtrlX();
+                coords[1] = (float)c.getCtrlY();
+                coords[2] = (float)c.getX2();
+                coords[3] = (float)c.getY2();
+                count = 2;
+            }
+            if (t != null) {
+                t.transform(coords, 0, coords, 0, count);
+            }
+            return type;
+        }
+
+    }
+
+    /**
+     * Instantiates a new quadratic curve.
+     */
+    protected QuadCurve2D() {
+    }
+
+    /**
+     * Gets the x coordinate of the starting point.
+     * 
+     * @return the x coordinate of the starting point.
+     */
+    public abstract double getX1();
+
+    /**
+     * Gets the y coordinate of the starting point.
+     * 
+     * @return the y coordinate of the starting point.
+     */
+    public abstract double getY1();
+
+    /**
+     * Gets the starting point.
+     * 
+     * @return the starting point.
+     */
+    public abstract Point2D getP1();
+
+    /**
+     * Gets the x coordinate of the control point.
+     * 
+     * @return the x coordinate of the control point.
+     */
+    public abstract double getCtrlX();
+
+    /**
+     * Gets the y coordinate of the control point.
+     * 
+     * @return y coordinate of the control point.
+     */
+    public abstract double getCtrlY();
+
+    /**
+     * Gets the control point.
+     * 
+     * @return the control point.
+     */
+    public abstract Point2D getCtrlPt();
+
+    /**
+     * Gets the x coordinate of the end point.
+     * 
+     * @return the x coordinate of the end point.
+     */
+    public abstract double getX2();
+
+    /**
+     * Gets the y coordinate of the end point.
+     * 
+     * @return the y coordinate of the end point.
+     */
+    public abstract double getY2();
+
+    /**
+     * Gets the end point.
+     * 
+     * @return the end point.
+     */
+    public abstract Point2D getP2();
+
+    /**
+     * Sets the data of the curve.
+     * 
+     * @param x1
+     *            the x coordinate of the starting point of the curved segment.
+     * @param y1
+     *            the y coordinate of the starting point of the curved segment.
+     * @param ctrlx
+     *            the x coordinate of the control point.
+     * @param ctrly
+     *            the y coordinate of the control point.
+     * @param x2
+     *            the x coordinate of the end point of the curved segment.
+     * @param y2
+     *            the y coordinate of the end point of the curved segment.
+     */
+    public abstract void setCurve(double x1, double y1, double ctrlx, double ctrly, double x2,
+            double y2);
+
+    /**
+     * Sets the data of the curve.
+     * 
+     * @param p1
+     *            the starting point of the curved segment.
+     * @param cp
+     *            the control point.
+     * @param p2
+     *            the end point of the curved segment.
+     * @throws NullPointerException
+     *             if any of the three points is null.
+     */
+    public void setCurve(Point2D p1, Point2D cp, Point2D p2) {
+        setCurve(p1.getX(), p1.getY(), cp.getX(), cp.getY(), p2.getX(), p2.getY());
+    }
+
+    /**
+     * Sets the data of the curve by reading the data from an array of values.
+     * The values are read in the same order as the arguments of the method
+     * {@link QuadCurve2D#setCurve(double, double, double, double, double, double)}
+     * .
+     * 
+     * @param coords
+     *            the array of values containing the new coordinates.
+     * @param offset
+     *            the offset of the data to read within the array.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if {@code coords.length} < offset + 6.
+     * @throws NullPointerException
+     *             if the coordinate array is null.
+     */
+    public void setCurve(double[] coords, int offset) {
+        setCurve(coords[offset + 0], coords[offset + 1], coords[offset + 2], coords[offset + 3],
+                coords[offset + 4], coords[offset + 5]);
+    }
+
+    /**
+     * Sets the data of the curve by reading the data from an array of points.
+     * The values are read in the same order as the arguments of the method
+     * {@link QuadCurve2D#setCurve(Point2D, Point2D, Point2D)}.
+     * 
+     * @param points
+     *            the array of points containing the new coordinates.
+     * @param offset
+     *            the offset of the data to read within the array.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if points.length < offset + 3.
+     * @throws NullPointerException
+     *             if the point array is null.
+     */
+    public void setCurve(Point2D[] points, int offset) {
+        setCurve(points[offset + 0].getX(), points[offset + 0].getY(), points[offset + 1].getX(),
+                points[offset + 1].getY(), points[offset + 2].getX(), points[offset + 2].getY());
+    }
+
+    /**
+     * Sets the data of the curve by copying it from another QuadCurve2D.
+     * 
+     * @param curve
+     *            the curve to copy the data points from.
+     * @throws NullPointerException
+     *             if the curve is null.
+     */
+    public void setCurve(QuadCurve2D curve) {
+        setCurve(curve.getX1(), curve.getY1(), curve.getCtrlX(), curve.getCtrlY(), curve.getX2(),
+                curve.getY2());
+    }
+
+    /**
+     * Gets the square of the distance from the control point to the straight
+     * line segment connecting the start point and the end point for this curve.
+     * 
+     * @return the square of the distance from the control point to the straight
+     *         line segment connecting the start point and the end point.
+     */
+    public double getFlatnessSq() {
+        return Line2D.ptSegDistSq(getX1(), getY1(), getX2(), getY2(), getCtrlX(), getCtrlY());
+    }
+
+    /**
+     * Gets the square of the distance from the control point to the straight
+     * line segment connecting the start point and the end point.
+     * 
+     * @param x1
+     *            the x coordinate of the starting point of the curved segment.
+     * @param y1
+     *            the y coordinate of the starting point of the curved segment.
+     * @param ctrlx
+     *            the x coordinate of the control point.
+     * @param ctrly
+     *            the y coordinate of the control point.
+     * @param x2
+     *            the x coordinate of the end point of the curved segment.
+     * @param y2
+     *            the y coordinate of the end point of the curved segment.
+     * @return the square of the distance from the control point to the straight
+     *         line segment connecting the start point and the end point.
+     */
+    public static double getFlatnessSq(double x1, double y1, double ctrlx, double ctrly, double x2,
+            double y2) {
+        return Line2D.ptSegDistSq(x1, y1, x2, y2, ctrlx, ctrly);
+    }
+
+    /**
+     * Gets the square of the distance from the control point to the straight
+     * line segment connecting the start point and the end point by reading the
+     * coordinates of the points from an array of values. The values are read in
+     * the same order as the arguments of the method
+     * {@link QuadCurve2D#getFlatnessSq(double, double, double, double, double, double)}
+     * .
+     * 
+     * @param coords
+     *            the array of points containing the coordinates to use for the
+     *            calculation
+     * @param offset
+     *            the offset of the data to read within the array
+     * @return the square of the distance from the control point to the straight
+     *         line segment connecting the start point and the end point.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if {@code coords.length} < offset + 6.
+     * @throws NullPointerException
+     *             if the coordinate array is null.
+     */
+    public static double getFlatnessSq(double coords[], int offset) {
+        return Line2D.ptSegDistSq(coords[offset + 0], coords[offset + 1], coords[offset + 4],
+                coords[offset + 5], coords[offset + 2], coords[offset + 3]);
+    }
+
+    /**
+     * Gets the distance from the control point to the straight line segment
+     * connecting the start point and the end point of this QuadCurve2D.
+     * 
+     * @return the the distance from the control point to the straight line
+     *         segment connecting the start point and the end point of this
+     *         QuadCurve2D.
+     */
+    public double getFlatness() {
+        return Line2D.ptSegDist(getX1(), getY1(), getX2(), getY2(), getCtrlX(), getCtrlY());
+    }
+
+    /**
+     * Gets the distance from the control point to the straight line segment
+     * connecting the start point and the end point.
+     * 
+     * @param x1
+     *            the x coordinate of the starting point of the curved segment.
+     * @param y1
+     *            the y coordinate of the starting point of the curved segment.
+     * @param ctrlx
+     *            the x coordinate of the control point.
+     * @param ctrly
+     *            the y coordinate of the control point.
+     * @param x2
+     *            the x coordinate of the end point of the curved segment.
+     * @param y2
+     *            the y coordinate of the end point of the curved segment.
+     * @return the the distance from the control point to the straight line
+     *         segment connecting the start point and the end point.
+     */
+    public static double getFlatness(double x1, double y1, double ctrlx, double ctrly, double x2,
+            double y2) {
+        return Line2D.ptSegDist(x1, y1, x2, y2, ctrlx, ctrly);
+    }
+
+    /**
+     * Gets the the distance from the control point to the straight line segment
+     * connecting the start point and the end point. The values are read in the
+     * same order as the arguments of the method
+     * {@link QuadCurve2D#getFlatness(double, double, double, double, double, double)}
+     * .
+     * 
+     * @param coords
+     *            the array of points containing the coordinates to use for the
+     *            calculation.
+     * @param offset
+     *            the offset of the data to read within the array.
+     * @return the the distance from the control point to the straight line
+     *         segment connecting the start point and the end point.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if {code coords.length} < offset + 6.
+     * @throws NullPointerException
+     *             if the coordinate array is null.
+     */
+    public static double getFlatness(double coords[], int offset) {
+        return Line2D.ptSegDist(coords[offset + 0], coords[offset + 1], coords[offset + 4],
+                coords[offset + 5], coords[offset + 2], coords[offset + 3]);
+    }
+
+    /**
+     * Creates the data for two quadratic curves by dividing this curve in two.
+     * The division point is the point on the curve that is closest to this
+     * curve's control point. The data of this curve is left unchanged.
+     * 
+     * @param left
+     *            the QuadCurve2D where the left (start) segment's data is
+     *            written.
+     * @param right
+     *            the QuadCurve2D where the right (end) segment's data is
+     *            written.
+     * @throws NullPointerException
+     *             if either curve is null.
+     */
+    public void subdivide(QuadCurve2D left, QuadCurve2D right) {
+        subdivide(this, left, right);
+    }
+
+    /**
+     * Creates the data for two quadratic curves by dividing a source curve in
+     * two. The division point is the point on the curve that is closest to the
+     * source curve's control point. The data of the source curve is left
+     * unchanged.
+     * 
+     * @param src
+     *            the curve that provides the initial data.
+     * @param left
+     *            the QuadCurve2D where the left (start) segment's data is
+     *            written.
+     * @param right
+     *            the QuadCurve2D where the right (end) segment's data is
+     *            written.
+     * @throws NullPointerException
+     *             if one of the curves is null.
+     */
+    public static void subdivide(QuadCurve2D src, QuadCurve2D left, QuadCurve2D right) {
+        double x1 = src.getX1();
+        double y1 = src.getY1();
+        double cx = src.getCtrlX();
+        double cy = src.getCtrlY();
+        double x2 = src.getX2();
+        double y2 = src.getY2();
+        double cx1 = (x1 + cx) / 2.0;
+        double cy1 = (y1 + cy) / 2.0;
+        double cx2 = (x2 + cx) / 2.0;
+        double cy2 = (y2 + cy) / 2.0;
+        cx = (cx1 + cx2) / 2.0;
+        cy = (cy1 + cy2) / 2.0;
+        if (left != null) {
+            left.setCurve(x1, y1, cx1, cy1, cx, cy);
+        }
+        if (right != null) {
+            right.setCurve(cx, cy, cx2, cy2, x2, y2);
+        }
+    }
+
+    /**
+     * Creates the data for two quadratic curves by dividing a source curve in
+     * two. The division point is the point on the curve that is closest to the
+     * source curve's control point. The data for the three curves is read and
+     * written from arrays of values in the usual order: x1, y1, cx, cy, x2, y2.
+     * 
+     * @param src
+     *            the array that gives the data values for the source curve.
+     * @param srcoff
+     *            the offset in the src array to read the values from.
+     * @param left
+     *            the array where the coordinates of the start curve should be
+     *            written.
+     * @param leftOff
+     *            the offset in the left array to start writing the values.
+     * @param right
+     *            the array where the coordinates of the end curve should be
+     *            written.
+     * @param rightOff
+     *            the offset in the right array to start writing the values.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if {@code src.length} < srcoff + 6 or if {@code left.length}
+     *             < leftOff + 6 or if {@code right.length} < rightOff + 6.
+     * @throws NullPointerException
+     *             if one of the arrays is null.
+     */
+    public static void subdivide(double src[], int srcoff, double left[], int leftOff,
+            double right[], int rightOff) {
+        double x1 = src[srcoff + 0];
+        double y1 = src[srcoff + 1];
+        double cx = src[srcoff + 2];
+        double cy = src[srcoff + 3];
+        double x2 = src[srcoff + 4];
+        double y2 = src[srcoff + 5];
+        double cx1 = (x1 + cx) / 2.0;
+        double cy1 = (y1 + cy) / 2.0;
+        double cx2 = (x2 + cx) / 2.0;
+        double cy2 = (y2 + cy) / 2.0;
+        cx = (cx1 + cx2) / 2.0;
+        cy = (cy1 + cy2) / 2.0;
+        if (left != null) {
+            left[leftOff + 0] = x1;
+            left[leftOff + 1] = y1;
+            left[leftOff + 2] = cx1;
+            left[leftOff + 3] = cy1;
+            left[leftOff + 4] = cx;
+            left[leftOff + 5] = cy;
+        }
+        if (right != null) {
+            right[rightOff + 0] = cx;
+            right[rightOff + 1] = cy;
+            right[rightOff + 2] = cx2;
+            right[rightOff + 3] = cy2;
+            right[rightOff + 4] = x2;
+            right[rightOff + 5] = y2;
+        }
+    }
+
+    /**
+     * Finds the roots of the quadratic polynomial. This is accomplished by
+     * finding the (real) values of x that solve the following equation:
+     * eqn[2]*x*x + eqn[1]*x + eqn[0] = 0. The solutions are written back into
+     * the array eqn starting from the index 0 in the array. The return value
+     * tells how many array elements have been changed by this method call.
+     * 
+     * @param eqn
+     *            an array containing the coefficients of the quadratic
+     *            polynomial to solve.
+     * @return the number of roots of the quadratic polynomial.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if {@code eqn.length} < 3.
+     * @throws NullPointerException
+     *             if the array is null.
+     */
+    public static int solveQuadratic(double eqn[]) {
+        return solveQuadratic(eqn, eqn);
+    }
+
+    /**
+     * Finds the roots of the quadratic polynomial. This is accomplished by
+     * finding the (real) values of x that solve the following equation:
+     * eqn[2]*x*x + eqn[1]*x + eqn[0] = 0. The solutions are written into the
+     * array res starting from the index 0 in the array. The return value tells
+     * how many array elements have been written by this method call.
+     * 
+     * @param eqn
+     *            an array containing the coefficients of the quadratic
+     *            polynomial to solve.
+     * @param res
+     *            the array that this method writes the results into.
+     * @return the number of roots of the quadratic polynomial.
+     * @throws ArrayIndexOutOfBoundsException
+     *             if {@code eqn.length} < 3 or if {@code res.length} is less
+     *             than the number of roots.
+     * @throws NullPointerException
+     *             if either array is null.
+     */
+    public static int solveQuadratic(double eqn[], double res[]) {
+        return Crossing.solveQuad(eqn, res);
+    }
+
+    public boolean contains(double px, double py) {
+        return Crossing.isInsideEvenOdd(Crossing.crossShape(this, px, py));
+    }
+
+    public boolean contains(double rx, double ry, double rw, double rh) {
+        int cross = Crossing.intersectShape(this, rx, ry, rw, rh);
+        return cross != Crossing.CROSSING && Crossing.isInsideEvenOdd(cross);
+    }
+
+    public boolean intersects(double rx, double ry, double rw, double rh) {
+        int cross = Crossing.intersectShape(this, rx, ry, rw, rh);
+        return cross == Crossing.CROSSING || Crossing.isInsideEvenOdd(cross);
+    }
+
+    public boolean contains(Point2D p) {
+        return contains(p.getX(), p.getY());
+    }
+
+    public boolean intersects(Rectangle2D r) {
+        return intersects(r.getX(), r.getY(), r.getWidth(), r.getHeight());
+    }
+
+    public boolean contains(Rectangle2D r) {
+        return contains(r.getX(), r.getY(), r.getWidth(), r.getHeight());
+    }
+
+    public Rectangle getBounds() {
+        return getBounds2D().getBounds();
+    }
+
+    public PathIterator getPathIterator(AffineTransform t) {
+        return new Iterator(this, t);
+    }
+
+    public PathIterator getPathIterator(AffineTransform t, double flatness) {
+        return new FlatteningPathIterator(getPathIterator(t), flatness);
+    }
+
+    @Override
+    public Object clone() {
+        try {
+            return super.clone();
+        } catch (CloneNotSupportedException e) {
+            throw new InternalError();
+        }
+    }
+
+}