[Pixelle-commit] SF.net SVN: pixelle:[221] trunk/pixelle/src/com/mebigfatguy/pixelle/eval/ PixelleEvalIndexed.java

[<dbr...@us...>]

Revision: 221
          http://pixelle.svn.sourceforge.net/pixelle/?rev=221&view=rev
Author:   dbrosius
Date:     2008-11-22 06:00:16 +0000 (Sat, 22 Nov 2008)

Log Message:
-----------
an evaluator for indexed bitmaps

Added Paths:
-----------
    trunk/pixelle/src/com/mebigfatguy/pixelle/eval/PixelleEvalIndexed.java

Added: trunk/pixelle/src/com/mebigfatguy/pixelle/eval/PixelleEvalIndexed.java
===================================================================
--- trunk/pixelle/src/com/mebigfatguy/pixelle/eval/PixelleEvalIndexed.java	                        (rev 0)
+++ trunk/pixelle/src/com/mebigfatguy/pixelle/eval/PixelleEvalIndexed.java	2008-11-22 06:00:16 UTC (rev 221)
@@ -0,0 +1,76 @@
+/*
+ * pixelle - Graphics algorithmic editor
+ * Copyright (C) 2008 Dave Brosius
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library 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 GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+package com.mebigfatguy.pixelle.eval;
+
+import java.awt.image.ColorModel;
+
+import com.mebigfatguy.pixelle.ColorOutOfBoundsOption;
+import com.mebigfatguy.pixelle.IndexOutOfBoundsOption;
+import com.mebigfatguy.pixelle.PixelleEval;
+import com.mebigfatguy.pixelle.PixelleImage;
+
+public class PixelleEvalIndexed extends PixelleEval {
+	static final int[] bitsPerPixelMask = { 0, 1, 3, 0, 15, 0, 0, 0, 255 };
+	
+	ColorModel model;
+	int bitsPerPixel;
+	int pixelsPerByte;
+	
+	public PixelleEvalIndexed(PixelleImage srcImage, IndexOutOfBoundsOption iOption, ColorOutOfBoundsOption cOption) {
+		super(srcImage, iOption, cOption);
+		model = srcImage.getSaveImage().getColorModel();
+		bitsPerPixel = model.getPixelSize();
+		pixelsPerByte = 8 / bitsPerPixel;
+	}
+	
+	@Override
+	public double getTransparencyValue(int x, int y) {
+		int px = getPixelIndex(x, y);
+
+		return model.getAlpha(px);
+	}
+	
+	@Override
+	public double getBlueValue(int x, int y) {
+		int px = getPixelIndex(x, y);
+
+		return model.getBlue(px);
+	}
+
+	@Override
+	public double getGreenValue(int x, int y) {
+		int px = getPixelIndex(x, y);
+
+		return model.getGreen(px);
+	}
+
+	@Override
+	public double getRedValue(int x, int y) {
+		int px = getPixelIndex(x, y);
+		
+		return model.getRed(px);
+	}
+	
+	private int getPixelIndex(int x, int y) {
+		int px = buffer.getElem((y * width / pixelsPerByte) + (x / pixelsPerByte));
+		int shift = x & (pixelsPerByte-1);
+		px = (px >> shift) & bitsPerPixelMask[bitsPerPixel];
+		return px;
+	}
+}


Property changes on: trunk/pixelle/src/com/mebigfatguy/pixelle/eval/PixelleEvalIndexed.java
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Added: svn:mime-type
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