author | prr |
Sat, 19 Sep 2015 15:45:59 -0700 | |
changeset 32865 | f9cb6e427f9e |
parent 25859 | 3317bb8137f4 |
child 34417 | 57a3863abbb4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.java2d.pipe; |
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import java.awt.BasicStroke; |
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import java.awt.Rectangle; |
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import java.awt.Shape; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.geom.PathIterator; |
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import sun.awt.SunHints; |
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import sun.java2d.SunGraphics2D; |
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/** |
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* This class is used to convert raw geometry into 8-bit alpha tiles |
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* using an AATileGenerator for application by the next stage of |
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* the pipeline. |
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* This class sets up the Generator and computes the alpha tiles |
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* and then passes them on to a CompositePipe object for painting. |
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*/ |
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public class AAShapePipe |
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implements ShapeDrawPipe, ParallelogramPipe |
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{ |
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static RenderingEngine renderengine = RenderingEngine.getInstance(); |
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CompositePipe outpipe; |
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public AAShapePipe(CompositePipe pipe) { |
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outpipe = pipe; |
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} |
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public void draw(SunGraphics2D sg, Shape s) { |
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BasicStroke bs; |
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if (sg.stroke instanceof BasicStroke) { |
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bs = (BasicStroke) sg.stroke; |
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} else { |
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s = sg.stroke.createStrokedShape(s); |
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bs = null; |
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} |
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renderPath(sg, s, bs); |
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} |
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public void fill(SunGraphics2D sg, Shape s) { |
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renderPath(sg, s, null); |
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} |
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private static Rectangle2D computeBBox(double ux1, double uy1, |
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double ux2, double uy2) |
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{ |
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if ((ux2 -= ux1) < 0) { |
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ux1 += ux2; |
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ux2 = -ux2; |
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} |
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if ((uy2 -= uy1) < 0) { |
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uy1 += uy2; |
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uy2 = -uy2; |
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} |
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return new Rectangle2D.Double(ux1, uy1, ux2, uy2); |
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} |
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public void fillParallelogram(SunGraphics2D sg, |
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double ux1, double uy1, |
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double ux2, double uy2, |
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double x, double y, |
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double dx1, double dy1, |
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double dx2, double dy2) |
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{ |
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Region clip = sg.getCompClip(); |
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int abox[] = new int[4]; |
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AATileGenerator aatg = |
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renderengine.getAATileGenerator(x, y, dx1, dy1, dx2, dy2, 0, 0, |
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clip, abox); |
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if (aatg == null) { |
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// Nothing to render |
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return; |
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} |
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renderTiles(sg, computeBBox(ux1, uy1, ux2, uy2), aatg, abox); |
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} |
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public void drawParallelogram(SunGraphics2D sg, |
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double ux1, double uy1, |
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double ux2, double uy2, |
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double x, double y, |
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double dx1, double dy1, |
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double dx2, double dy2, |
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double lw1, double lw2) |
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{ |
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Region clip = sg.getCompClip(); |
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int abox[] = new int[4]; |
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AATileGenerator aatg = |
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renderengine.getAATileGenerator(x, y, dx1, dy1, dx2, dy2, lw1, lw2, |
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clip, abox); |
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if (aatg == null) { |
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// Nothing to render |
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return; |
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} |
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// Note that bbox is of the original shape, not the wide path. |
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// This is appropriate for handing to Paint methods... |
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renderTiles(sg, computeBBox(ux1, uy1, ux2, uy2), aatg, abox); |
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} |
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private static byte[] theTile; |
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private static synchronized byte[] getAlphaTile(int len) { |
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byte[] t = theTile; |
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if (t == null || t.length < len) { |
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t = new byte[len]; |
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} else { |
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theTile = null; |
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} |
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return t; |
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} |
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private static synchronized void dropAlphaTile(byte[] t) { |
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theTile = t; |
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} |
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public void renderPath(SunGraphics2D sg, Shape s, BasicStroke bs) { |
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boolean adjust = (bs != null && |
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sg.strokeHint != SunHints.INTVAL_STROKE_PURE); |
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boolean thin = (sg.strokeState <= SunGraphics2D.STROKE_THINDASHED); |
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Region clip = sg.getCompClip(); |
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int abox[] = new int[4]; |
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AATileGenerator aatg = |
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renderengine.getAATileGenerator(s, sg.transform, clip, |
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bs, thin, adjust, abox); |
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if (aatg == null) { |
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// Nothing to render |
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return; |
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} |
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renderTiles(sg, s, aatg, abox); |
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} |
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public void renderTiles(SunGraphics2D sg, Shape s, |
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AATileGenerator aatg, int abox[]) |
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{ |
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Object context = null; |
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byte alpha[] = null; |
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try { |
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context = outpipe.startSequence(sg, s, |
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new Rectangle(abox[0], abox[1], |
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abox[2] - abox[0], |
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abox[3] - abox[1]), |
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abox); |
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int tw = aatg.getTileWidth(); |
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int th = aatg.getTileHeight(); |
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alpha = getAlphaTile(tw * th); |
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byte[] atile; |
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for (int y = abox[1]; y < abox[3]; y += th) { |
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for (int x = abox[0]; x < abox[2]; x += tw) { |
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int w = Math.min(tw, abox[2] - x); |
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int h = Math.min(th, abox[3] - y); |
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int a = aatg.getTypicalAlpha(); |
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if (a == 0x00 || |
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outpipe.needTile(context, x, y, w, h) == false) |
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{ |
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aatg.nextTile(); |
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outpipe.skipTile(context, x, y); |
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continue; |
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} |
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if (a == 0xff) { |
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atile = null; |
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aatg.nextTile(); |
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} else { |
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atile = alpha; |
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aatg.getAlpha(alpha, 0, tw); |
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} |
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outpipe.renderPathTile(context, atile, 0, tw, |
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x, y, w, h); |
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} |
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} |
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} finally { |
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aatg.dispose(); |
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if (context != null) { |
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outpipe.endSequence(context); |
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} |
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if (alpha != null) { |
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dropAlphaTile(alpha); |
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} |
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} |
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} |
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} |