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/* 
 *  Copyright (c) 2011, Michael Bedward. 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.   
 *   
 *  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 HOLDER 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.jaitools.demo.jiffle;

import java.awt.image.RenderedImage;
import java.io.File;
import java.util.Map;

import javax.media.jai.TiledImage;

import org.jaitools.CollectionFactory;
import org.jaitools.demo.ImageChoice;
import org.jaitools.imageutils.ImageUtils;
import org.jaitools.jiffle.Jiffle;
import org.jaitools.jiffle.runtime.JiffleDirectRuntime;
import org.jaitools.swing.ImageFrame;

/**
 * Demonstrates how to retrieve and use a runtime object from a compiled 
 * Jiffle script.
 * 
 * @author Michael Bedward
 * @since 1.1
 * @version $Id: DirectRuntimeDemo.java 1654 2011-06-16 10:46:55Z michael.bedward $
 */
public class DirectRuntimeDemo extends JiffleDemoBase {

    /**
     * Run the demonstration. The optional {@code arg} can be either
     * the path to a user-supplied script file or one of "chessboard",
     * "interference", "ripple" or "squircle".
     * 
     * @param args (optional) the script to run
     * @throws Exception on an error in the Jiffle compiler
     */
    public static void main(String[] args) throws Exception {
        DirectRuntimeDemo demo = new DirectRuntimeDemo();
        File f = JiffleDemoHelper.getScriptFile(args, ImageChoice.RIPPLES);
        demo.compileAndRun(f);
    }

    /**
     * Compiles a script read from a file and submits it for execution.
     * 
     * @param scriptFile file containing the Jiffle script
     * @throws Exception on an error in the Jiffle compiler
     */
    public void compileAndRun(File scriptFile) throws Exception {
        Map imageParams = CollectionFactory.map();
        imageParams.put("result", Jiffle.ImageRole.DEST);

        Jiffle jiffle = new Jiffle(scriptFile, imageParams);

        Map images = CollectionFactory.map();
        images.put("result",
                ImageUtils.createConstantImage(WIDTH, HEIGHT, Double.valueOf(0d)));

        if (jiffle.isCompiled()) {
            JiffleDirectRuntime runtime = jiffle.getRuntimeInstance();

            final TiledImage destImg = ImageUtils.createConstantImage(WIDTH, HEIGHT, 0d);
            runtime.setDestinationImage("result", destImg);
            
            runtime.evaluateAll(null);
            
            ImageFrame frame = new ImageFrame(destImg, "Jiffle image demo");
            frame.setVisible(true);
        }
    }

}