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 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

package java.awt.geom;

import java.awt.Shape;

import java.awt.Rectangle;

import java.io.Serializable;

import sun.awt.geom.Curve;

/**

 * The <code>QuadCurve2D</code> class defines a quadratic parametric curve

 * segment in {@code (x,y)} coordinate space.

 * <p>

 * This class is only the abstract superclass for all objects that

 * store a 2D quadratic curve segment.

 * The actual storage representation of the coordinates is left to

 * the subclass.

 *

 * @author      Jim Graham

 * @since 1.2

 */

public abstract class QuadCurve2D implements Shape, Cloneable {

    /**

     * A quadratic parametric curve segment specified with

     * {@code float} coordinates.

     *

     * @since 1.2

     */

    public static class Float extends QuadCurve2D implements Serializable {

        /**

         * The X coordinate of the start point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public float x1;

        /**

         * The Y coordinate of the start point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public float y1;

        /**

         * The X coordinate of the control point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public float ctrlx;

        /**

         * The Y coordinate of the control point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public float ctrly;

        /**

         * The X coordinate of the end point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public float x2;

        /**

         * The Y coordinate of the end point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public float y2;

        /**

         * Constructs and initializes a <code>QuadCurve2D</code> with

         * coordinates (0, 0, 0, 0, 0, 0).

         * @since 1.2

         */

        public Float() {

        }

        /**

         * Constructs and initializes a <code>QuadCurve2D</code> from the

         * specified {@code float} coordinates.

         *

         * @param x1 the X coordinate of the start point

         * @param y1 the Y coordinate of the start point

         * @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

         * @param y2 the Y coordinate of the end point

         * @since 1.2

         */

        public Float(float x1, float y1,

                     float ctrlx, float ctrly,

                     float x2, float y2)

        {

            setCurve(x1, y1, ctrlx, ctrly, x2, y2);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getX1() {

            return (double) x1;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getY1() {

            return (double) y1;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Point2D getP1() {

            return new Point2D.Float(x1, y1);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getCtrlX() {

            return (double) ctrlx;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getCtrlY() {

            return (double) ctrly;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Point2D getCtrlPt() {

            return new Point2D.Float(ctrlx, ctrly);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getX2() {

            return (double) x2;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getY2() {

            return (double) y2;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Point2D getP2() {

            return new Point2D.Float(x2, y2);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        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 location of the end points and control point of this curve

         * to the specified {@code float} coordinates.

         *

         * @param x1 the X coordinate of the start point

         * @param y1 the Y coordinate of the start point

         * @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

         * @param y2 the Y coordinate of the end point

         * @since 1.2

         */

        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;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Rectangle2D getBounds2D() {

            float left   = Math.min(Math.min(x1, x2), ctrlx);

            float top    = Math.min(Math.min(y1, y2), ctrly);

            float right  = Math.max(Math.max(x1, x2), ctrlx);

            float bottom = Math.max(Math.max(y1, y2), ctrly);

            return new Rectangle2D.Float(left, top,

                                         right - left, bottom - top);

        }

        /*

         * JDK 1.6 serialVersionUID

         */

        private static final long serialVersionUID = -8511188402130719609L;

    }

    /**

     * A quadratic parametric curve segment specified with

     * {@code double} coordinates.

     *

     * @since 1.2

     */

    public static class Double extends QuadCurve2D implements Serializable {

        /**

         * The X coordinate of the start point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public double x1;

        /**

         * The Y coordinate of the start point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public double y1;

        /**

         * The X coordinate of the control point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public double ctrlx;

        /**

         * The Y coordinate of the control point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public double ctrly;

        /**

         * The X coordinate of the end point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public double x2;

        /**

         * The Y coordinate of the end point of the quadratic curve

         * segment.

         * @since 1.2

         * @serial

         */

        public double y2;

        /**

         * Constructs and initializes a <code>QuadCurve2D</code> with

         * coordinates (0, 0, 0, 0, 0, 0).

         * @since 1.2

         */

        public Double() {

        }

        /**

         * Constructs and initializes a <code>QuadCurve2D</code> from the

         * specified {@code double} coordinates.

         *

         * @param x1 the X coordinate of the start point

         * @param y1 the Y coordinate of the start point

         * @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

         * @param y2 the Y coordinate of the end point

         * @since 1.2

         */

        public Double(double x1, double y1,

                      double ctrlx, double ctrly,

                      double x2, double y2)

        {

            setCurve(x1, y1, ctrlx, ctrly, x2, y2);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getX1() {

            return x1;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getY1() {

            return y1;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Point2D getP1() {

            return new Point2D.Double(x1, y1);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getCtrlX() {

            return ctrlx;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getCtrlY() {

            return ctrly;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Point2D getCtrlPt() {

            return new Point2D.Double(ctrlx, ctrly);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getX2() {

            return x2;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public double getY2() {

            return y2;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Point2D getP2() {

            return new Point2D.Double(x2, y2);

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        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;

        }

        /**

         * {@inheritDoc}

         * @since 1.2

         */

        public Rectangle2D getBounds2D() {

            double left   = Math.min(Math.min(x1, x2), ctrlx);

            double top    = Math.min(Math.min(y1, y2), ctrly);

            double right  = Math.max(Math.max(x1, x2), ctrlx);

            double bottom = Math.max(Math.max(y1, y2), ctrly);

            return new Rectangle2D.Double(left, top,

                                          right - left, bottom - top);

        }

        /*

         * JDK 1.6 serialVersionUID

         */

        private static final long serialVersionUID = 4217149928428559721L;

    }

    /**

     * This is an abstract class that cannot be instantiated directly.

     * Type-specific implementation subclasses are available for

     * instantiation and provide a number of formats for storing

     * the information necessary to satisfy the various accessor

     * methods below.

     *

     * @see java.awt.geom.QuadCurve2D.Float

     * @see java.awt.geom.QuadCurve2D.Double

     * @since 1.2

     */

    protected QuadCurve2D() {

    }

    /**

     * Returns the X coordinate of the start point in

     * <code>double</code> in precision.

     * @return the X coordinate of the start point.

     * @since 1.2

     */

    public abstract double getX1();

    /**

     * Returns the Y coordinate of the start point in

     * <code>double</code> precision.

     * @return the Y coordinate of the start point.

     * @since 1.2

     */

    public abstract double getY1();

    /**

     * Returns the start point.

     * @return a <code>Point2D</code> that is the start point of this

     *          <code>QuadCurve2D</code>.

     * @since 1.2

     */

    public abstract Point2D getP1();

    /**

     * Returns the X coordinate of the control point in

     * <code>double</code> precision.

     * @return X coordinate the control point

     * @since 1.2

     */

    public abstract double getCtrlX();

    /**

     * Returns the Y coordinate of the control point in

     * <code>double</code> precision.

     * @return the Y coordinate of the control point.

     * @since 1.2

     */

    public abstract double getCtrlY();

    /**

     * Returns the control point.

     * @return a <code>Point2D</code> that is the control point of this

     *          <code>Point2D</code>.

     * @since 1.2

     */

    public abstract Point2D getCtrlPt();

    /**

     * Returns the X coordinate of the end point in

     * <code>double</code> precision.

     * @return the x coordiante of the end point.

     * @since 1.2

     */

    public abstract double getX2();

    /**

     * Returns the Y coordinate of the end point in

     * <code>double</code> precision.

     * @return the Y coordinate of the end point.

     * @since 1.2

     */

    public abstract double getY2();

    /**

     * Returns the end point.