/*

 *

 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

package java2d.demos.Arcs_Curves;

import java.awt.*;

import java.awt.geom.Arc2D;

import java.awt.geom.AffineTransform;

import java2d.AnimatingSurface;

import static java.awt.Color.*;

/**

 * Arc2D Open, Chord & Pie arcs; Animated Pie Arc.

 */

@SuppressWarnings("serial")

public class Arcs extends AnimatingSurface {

    private static String types[] = { "Arc2D.OPEN", "Arc2D.CHORD", "Arc2D.PIE" };

    private static final int CLOSE = 0;

    private static final int OPEN = 1;

    private static final int FORWARD = 0;

    private static final int BACKWARD = 1;

    private static final int DOWN = 2;

    private static final int UP = 3;

    private int aw, ah; // animated arc width & height

    private int x, y;

    private int angleStart = 45;

    private int angleExtent = 270;

    private int mouth = CLOSE;

    private int direction = FORWARD;

    public Arcs() {

        setBackground(WHITE);

    }

    @Override

    public void reset(int w, int h) {

        x = 0;

        y = 0;

        aw = w / 12;

        ah = h / 12;

    }

    @Override

    public void step(int w, int h) {

        // Compute direction

        if (x + aw >= w - 5 && direction == FORWARD) {

            direction = DOWN;

        }

        if (y + ah >= h - 5 && direction == DOWN) {

            direction = BACKWARD;

        }

        if (x - aw <= 5 && direction == BACKWARD) {

            direction = UP;

        }

        if (y - ah <= 5 && direction == UP) {

            direction = FORWARD;

        }

        // compute angle start & extent

        if (mouth == CLOSE) {

            angleStart -= 5;

            angleExtent += 10;

        }

        if (mouth == OPEN) {

            angleStart += 5;

            angleExtent -= 10;

        }

        if (direction == FORWARD) {

            x += 5;

            y = 0;

        }

        if (direction == DOWN) {

            x = w;

            y += 5;

        }

        if (direction == BACKWARD) {

            x -= 5;

            y = h;

        }

        if (direction == UP) {

            x = 0;

            y -= 5;

        }

        if (angleStart == 0) {

            mouth = OPEN;

        }

        if (angleStart > 45) {

            mouth = CLOSE;

        }

    }

    @Override

    public void render(int w, int h, Graphics2D g2) {

        // Draw Arcs

        g2.setStroke(new BasicStroke(5.0f));

        for (int i = 0; i < types.length; i++) {

            Arc2D arc = new Arc2D.Float(i);

            arc.setFrame((i + 1) * w * .2, (i + 1) * h * .2, w * .17, h * .17);

            arc.setAngleStart(45);

            arc.setAngleExtent(270);

            g2.setColor(BLUE);

            g2.draw(arc);

            g2.setColor(GRAY);

            g2.fill(arc);

            g2.setColor(BLACK);

            g2.drawString(types[i], (int) ((i + 1) * w * .2), (int) ((i + 1) * h

                    * .2 - 3));

        }

        // Draw Animated Pie Arc

        Arc2D pieArc = new Arc2D.Float(Arc2D.PIE);

        pieArc.setFrame(0, 0, aw, ah);

        pieArc.setAngleStart(angleStart);

        pieArc.setAngleExtent(angleExtent);

        AffineTransform at = AffineTransform.getTranslateInstance(x, y);

        switch (direction) {

            case DOWN:

                at.rotate(Math.toRadians(90));

                break;

            case BACKWARD:

                at.rotate(Math.toRadians(180));

                break;

            case UP:

                at.rotate(Math.toRadians(270));

        }

        g2.setColor(BLUE);

        g2.fill(at.createTransformedShape(pieArc));

    }

    public static void main(String argv[]) {

        createDemoFrame(new Arcs());

    }

}