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Modules/multimedia/move.java

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+/*
+move.java
+ *
+ *    Copyright (c) 2000-2001, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of
+ *    the licenses.
+ *
+ *    This software 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 README
+ *    file for more details.
+ *
+ */
+/*
+ *	Written by Tero Mäyränen
+ */
+
+package org.gzigzag.module.multimedia;
+import org.gzigzag.*;
+import java.awt.*;
+import java.awt.image.*;
+import java.util.*;
+
+public class move extends MediaZOb
+{
+	public static final String rcsid = "$Id: move.java,v 1.2 2001/03/05 08:44:14 deetsay Exp $";
+
+	Pixels pix = null;
+
+	private int oldframe=0, oldx=0, oldy=0;
+
+	public Pixels getPixels()
+	{
+		Pixels inpix = readParam("input").getPixels();
+		int x = readParam("x").getInt(0);
+		int y = readParam("y").getInt(0);
+		if (pix != null && inpix.getFrame() == oldframe && x == oldx && y == oldy)
+		{
+			return pix;
+		}
+		oldframe = inpix.getFrame(); oldx = x; oldy = y;
+
+		int w = inpix.getWidth();
+		int h = inpix.getHeight();
+
+		if (pix == null)
+		{
+			pix = new Pixels(w, h);
+		}
+		else
+		{
+			pix.setSize(w, h);
+		}
+
+		pix.setX(inpix.getX() + x);
+		pix.setY(inpix.getY() + y);
+
+		int p[] = pix.getPixels(), ip[] = inpix.getPixels();
+		for (int i=0; i<w*h; i++) p[i] = ip[i];
+
+		pix.setFrame(pix.getFrame()+1);
+		return pix;
+	}
+}