159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/* 259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Copyright (c) 2009-2010 jMonkeyEngine 359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * All rights reserved. 459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Redistribution and use in source and binary forms, with or without 659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * modification, are permitted provided that the following conditions are 759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * met: 859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions of source code must retain the above copyright 1059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer. 1159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Redistributions in binary form must reproduce the above copyright 1359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * notice, this list of conditions and the following disclaimer in the 1459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * documentation and/or other materials provided with the distribution. 1559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 1659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 1759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * may be used to endorse or promote products derived from this software 1859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * without specific prior written permission. 1959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 2059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 2459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 2559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 2659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 2759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 2859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 2959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 3259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3359b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapackage com.jme3.texture.plugins; 3459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3559b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.texture.Image; 3659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport com.jme3.util.BufferUtils; 3759b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartaimport java.nio.ByteBuffer; 3859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 3959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta/** 4059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * ImageFlipper is a utility class used to flip images across the Y axis. 4159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * Due to the standard of where the image origin is between OpenGL and 4259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * other software, this class is required. 4359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * 4459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta * @author Kirill Vainer 4559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta */ 4659b2e6871c65f58fdad78cd7229c292f6a177578Scott Bartapublic class ImageFlipper { 4759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 4859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta public static void flipImage(Image img, int index){ 4959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta if (img.getFormat().isCompressed()) 5059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta throw new UnsupportedOperationException("Flipping compressed " + 5159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta "images is unsupported."); 5259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int w = img.getWidth(); 5459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int h = img.getHeight(); 5559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int halfH = h / 2; 5659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 5759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // bytes per pixel 5859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int bpp = img.getFormat().getBitsPerPixel() / 8; 5959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int scanline = w * bpp; 6059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta ByteBuffer data = img.getData(index); 6259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta ByteBuffer temp = BufferUtils.createByteBuffer(scanline); 6359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 6459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta data.rewind(); 6559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta for (int y = 0; y < halfH; y++){ 6659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta int oppY = h - y - 1; 6759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta // read in scanline 6859b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta data.position(y * scanline); 6959b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta data.limit(data.position() + scanline); 7059b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7159b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta temp.rewind(); 7259b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta temp.put(data); 7359b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7459b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7559b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta } 7659b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta 7759b2e6871c65f58fdad78cd7229c292f6a177578Scott Barta} 78