/*
 * Copyright (c) 2008-2019, Piccolo2D project, http://piccolo2d.org
 * Copyright (c) 1998-2008, University of Maryland
 * 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.
 *
 * None of the name of the University of Maryland, the name of the Piccolo2D project, or 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 org.piccolo2d.examples;

import java.awt.BasicStroke;
import java.awt.Color;
import java.util.Iterator;
import java.util.Random;

import org.piccolo2d.PCanvas;
import org.piccolo2d.PLayer;
import org.piccolo2d.PNode;
import org.piccolo2d.PRoot;
import org.piccolo2d.activities.PActivity;
import org.piccolo2d.extras.PFrame;
import org.piccolo2d.extras.util.PFixedWidthStroke;
import org.piccolo2d.nodes.PPath;


/**
 * 1000 nodes rotated continuously. Note that if you zoom to a portion of the
 * screen where you can't see any nodes the CPU usage goes down to 1%, even
 * though all the objects are still getting rotated continuously (every 20
 * milliseconds). This shows that the cost of repainting and bounds caches is
 * very cheap compared to the cost of drawing.
 */
public class DynamicExample extends PFrame {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public DynamicExample() {
        this(null);
    }

    public DynamicExample(final PCanvas aCanvas) {
        super("DynamicExample", false, aCanvas);
    }

    public void initialize() {
        final PLayer layer = getCanvas().getLayer();
        final PRoot root = getCanvas().getRoot();
        final Random r = new Random();
        for (int i = 0; i < 1000; i++) {
            final PNode n = PPath.createRectangle(0, 0, 100, 80);
            n.translate(10000 * r.nextFloat(), 10000 * r.nextFloat());
            n.setPaint(new Color(r.nextFloat(), r.nextFloat(), r.nextFloat()));
            layer.addChild(n);
        }
        getCanvas().getCamera().animateViewToCenterBounds(layer.getGlobalFullBounds(), true, 0);
        final PActivity a = new PActivity(-1, 20) {
            public void activityStep(final long currentTime) {
                super.activityStep(currentTime);
                rotateNodes();
            }
        };
        root.addActivity(a);

        final PPath p = new PPath.Float();
        p.moveTo(0, 0);
        p.lineTo(0, 1000);
        final PFixedWidthStroke stroke = new PFixedWidthStroke(2, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 10,
                new float[] { 5, 2 }, 0);
        p.setStroke(stroke);
        layer.addChild(p);
    }

    public void rotateNodes() {
        final Iterator i = getCanvas().getLayer().getChildrenReference().iterator();
        while (i.hasNext()) {
            final PNode each = (PNode) i.next();
            each.rotate(Math.toRadians(2));
        }
    }

    public static void main(final String[] args) {
        new DynamicExample();
    }
}