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Diffstat (limited to 'libjava/classpath/java/awt/image/Kernel.java')
-rw-r--r-- | libjava/classpath/java/awt/image/Kernel.java | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/libjava/classpath/java/awt/image/Kernel.java b/libjava/classpath/java/awt/image/Kernel.java deleted file mode 100644 index ae0ff14..0000000 --- a/libjava/classpath/java/awt/image/Kernel.java +++ /dev/null @@ -1,171 +0,0 @@ -/* Kernel.java -- Java class for an image processing kernel - Copyright (C) 2004, 2005, 2006, Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.awt.image; - -/** - * Kernel represents an image processing kernel. It gets used to hold - * convolution filters among other purposes. It stores an array of float - * values representing a 2-dimensional array in row-major order. - * - * @author Jerry Quinn (jlquinn@optonline.net) - */ -public class Kernel implements Cloneable -{ - /** The kernel width. */ - private final int width; - - /** The kernel height. */ - private final int height; - - /** Internal storage for the kernel's values. */ - private final float[] data; - - /** - * Creates a new <code>Kernel</code> instance with the specified dimensions - * and values. The first <code>width * height</code> values in the specified - * <code>data</code> array are copied to internal storage. - * - * @param width the kernel width. - * @param height the kernel height. - * @param data the source data array (<code>null</code> not permitted). - * - * @throws IllegalArgumentException if <code>data.length</code> is less than - * <code>width * height</code>. - * @throws IllegalArgumentException if <code>width</code> or - * <code>height</code> is less than zero. - * @throws NullPointerException if <code>data</code> is <code>null</code>. - */ - public Kernel(int width, int height, float[] data) - throws IllegalArgumentException - { - this.width = width; - this.height = height; - if (data.length < width * height || width < 0 || height < 0) - throw new IllegalArgumentException(); - this.data = new float[width * height]; - System.arraycopy(data, 0, this.data, 0, width * height); - } - - /** - * Returns the x-origin for the kernel, which is calculated as - * <code>(width - 1) / 2</code>. - * - * @return The x-origin for the kernel. - */ - public final int getXOrigin() - { - return (width - 1) / 2; - } - - /** - * Returns the y-origin for the kernel, which is calculated as - * <code>(height - 1) / 2</code>. - * - * @return The y-origin for the kernel. - */ - public final int getYOrigin() - { - return (height - 1) / 2; - } - - /** - * Returns the kernel width (as supplied to the constructor). - * - * @return The kernel width. - */ - public final int getWidth() - { - return width; - } - - /** - * Returns the kernel height (as supplied to the constructor). - * - * @return The kernel height. - */ - public final int getHeight() - { - return height; - } - - /** - * Returns an array containing a copy of the kernel data. If the - * <code>data</code> argument is non-<code>null</code>, the kernel values - * are copied into it and then <code>data</code> is returned as the result. - * If the <code>data</code> argument is <code>null</code>, this method - * allocates a new array then populates and returns it. - * - * @param data an array to copy the return values into (if - * <code>null</code>, a new array is allocated). - * - * @return The array with copied values. - * - * @throws IllegalArgumentException if <code>data.length</code> is less than - * the kernel's <code>width * height</code>. - */ - public final float[] getKernelData(float[] data) - throws IllegalArgumentException - { - if (data == null) - return (float[]) this.data.clone(); - - if (data.length < this.data.length) - throw new IllegalArgumentException(); - - System.arraycopy(this.data, 0, data, 0, this.data.length); - return data; - } - - /** - * Returns a clone of this kernel. - * - * @return a clone of this Kernel. - */ - public Object clone() - { - try - { - return super.clone(); - } - catch (CloneNotSupportedException e) - { - throw (Error) new InternalError().initCause(e); // Impossible - } - } -} |