1 /* 2 * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.scenario.effect.impl.state; 27 28 public interface LinearConvolvePeer { 29 /** 30 * Returns the number of power of 2 scales along the X axis. 31 * Positive numbers mean to scale the image larger by the indicated 32 * factors of 2.0. 33 * Negative numbers mean to scale the image smaller by the indicated 34 * factors of 0.5. 35 * Overall the image will be scaled by {@code pow(2.0, getPow2ScaleX())}. 36 * <p> 37 * @param kernel the {@code LinearConvolveKernel} instance for the operation. 38 * @return the power of 2.0 by which to scale the source image along the 39 * X axis. 40 */ 41 public int getPow2ScaleX(LinearConvolveKernel kernel); 42 43 /** 44 * Returns the number of power of 2 scales along the Y axis. 45 * Positive numbers mean to scale the image larger by the indicated 46 * factors of 2.0. 47 * Negative numbers mean to scale the image smaller by the indicated 48 * factors of 0.5. 49 * Overall the image will be scaled by {@code pow(2.0, getPow2ScaleY())}. 50 * <p> 51 * @param kernel the {@code LinearConvolveKernel} instance for the operation. 52 * @return the power of 2.0 by which to scale the source image along the 53 * Y axis. 54 */ 55 public int getPow2ScaleY(LinearConvolveKernel kernel); 56 }