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Modules/multimedia/rect.java

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+/*
+rect.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 rect extends MediaZOb
+{
+	public static final String rcsid = "$Id: rect.java,v 1.4 2001/03/05 08:44:14 deetsay Exp $";
+
+	private Pixels pix = null;
+
+	private int fade(int x, int fg, int bg)
+	{
+		int y = 0xff-x;
+		return 0xff000000
+			| (((((fg & 0xff0000) * x) + ((bg & 0xff0000) * y)) >> 8) & 0xff0000)
+			| (((((fg & 0xff00) * x) + ((bg & 0xff00) * y)) >> 8) & 0xff00)
+			| (((((fg & 0xff) * x) + ((bg & 0xff) * y)) >> 8) & 0xff);
+	}
+
+	private int oldw=0, oldh=0, oldbg=0, oldfg=0, oldstarsize=0;
+	private String oldmode="";
+
+	public Pixels getPixels()
+	{
+		int w = readParam("width").getInt(64);
+		int h = readParam("height").getInt(64);
+		int bg = readParam("bg").getInt(0);
+		int fg = readParam("fg").getInt(0xffffff);
+		int starsize = readParam("size").getInt(16);
+		if (starsize==0) starsize=1;
+		String mode = readParam("fillmode").getText("solid");
+
+		if (pix != null && oldw==w && oldh==h && oldbg==bg && oldfg==fg
+			&& oldstarsize==starsize && mode.equals(oldmode))
+		{
+			return pix;
+		}
+		oldw=w; oldh=h; oldbg=bg; oldfg=fg; oldstarsize=starsize; oldmode=mode;
+
+		if (pix == null)
+		{
+			pix = new Pixels(w, h);
+		}
+		else
+		{
+			pix.setSize(w, h);
+		}
+
+		int p[] = pix.getPixels();
+		if (mode.equals("solid"))
+		{
+			for (int i=0; i<(w*h); i++)
+			{
+				p[i] = 0xff000000 | fg;
+			}
+		}
+		if (mode.equals("starburst"))
+		{
+			// älä optiomoi, vaihda algoritmia
+			int w2 = w >> 1;
+			int h2 = h >> 1;
+			int i = 0, j;
+			for (int y=-h2; y<h-h2; y++)
+			{
+				for (int x=-w2; x<w-w2; x++)
+				{
+					j = ((int)Math.sqrt(x*x+y*y)*(256 / starsize));
+					if (j > 0xff) j = 0xff;
+					p[i++] = fade(j, bg, fg);
+				}
+			}
+		}
+		if (mode.equals("radial"))
+		{
+			int w2 = w >> 1;
+			int h2 = h >> 1;
+			int i = 0, j = w, i2 = w*h, j2 = (w*h)-w, k;
+			for (int y=-h2; y<0; y++)
+			{
+				for (int x=-w2; x<0; x++)
+				{
+					k = ((int)(Math.atan(((double)x) / y) * 128 / Math.PI)) & 0x3f;
+					p[i++] = fade(k, bg, fg);
+					p[--j] = fade(k, fg, bg);
+					p[--i2] = fade(k | 0x80, bg, fg);
+					p[j2++] = fade(k | 0x80, fg, bg);
+				}
+				i += w2;
+				j += w + w2;
+				i2 -= w2;
+				j2 -= w + w2;
+			}
+		}
+		pix.setFrame(pix.getFrame()+1);
+		return pix;
+	}
+}