J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2000 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.awt.image; |
| 27 | |
| 28 | import java.awt.geom.Rectangle2D; |
| 29 | import java.awt.geom.Point2D; |
| 30 | import java.awt.RenderingHints; |
| 31 | |
| 32 | /** |
| 33 | * This interface describes single-input/single-output |
| 34 | * operations performed on Raster objects. It is implemented by such |
| 35 | * classes as AffineTransformOp, ConvolveOp, and LookupOp. The Source |
| 36 | * and Destination objects must contain the appropriate number |
| 37 | * of bands for the particular classes implementing this interface. |
| 38 | * Otherwise, an exception is thrown. This interface cannot be used to |
| 39 | * describe more sophisticated Ops such as ones that take multiple sources. |
| 40 | * Each class implementing this interface will specify whether or not it |
| 41 | * will allow an in-place filtering operation (i.e. source object equal |
| 42 | * to the destination object). Note that the restriction to single-input |
| 43 | * operations means that the values of destination pixels prior to the |
| 44 | * operation are not used as input to the filter operation. |
| 45 | * @see AffineTransformOp |
| 46 | * @see BandCombineOp |
| 47 | * @see ColorConvertOp |
| 48 | * @see ConvolveOp |
| 49 | * @see LookupOp |
| 50 | * @see RescaleOp |
| 51 | */ |
| 52 | public interface RasterOp { |
| 53 | /** |
| 54 | * Performs a single-input/single-output operation from a source Raster |
| 55 | * to a destination Raster. If the destination Raster is null, a |
| 56 | * new Raster will be created. The IllegalArgumentException may be thrown |
| 57 | * if the source and/or destination Raster is incompatible with the types |
| 58 | * of Rasters allowed by the class implementing this filter. |
| 59 | * @param src the source <code>Raster</code> |
| 60 | * @param dest the destination <code>WritableRaster</code> |
| 61 | * @return a <code>WritableRaster</code> that represents the result of |
| 62 | * the filtering operation. |
| 63 | */ |
| 64 | public WritableRaster filter(Raster src, WritableRaster dest); |
| 65 | |
| 66 | /** |
| 67 | * Returns the bounding box of the filtered destination Raster. |
| 68 | * The IllegalArgumentException may be thrown if the source Raster |
| 69 | * is incompatible with the types of Rasters allowed |
| 70 | * by the class implementing this filter. |
| 71 | * @param src the source <code>Raster</code> |
| 72 | * @return a <code>Rectangle2D</code> that is the bounding box of |
| 73 | * the <code>Raster</code> resulting from the filtering |
| 74 | * operation. |
| 75 | */ |
| 76 | public Rectangle2D getBounds2D(Raster src); |
| 77 | |
| 78 | /** |
| 79 | * Creates a zeroed destination Raster with the correct size and number of |
| 80 | * bands. |
| 81 | * The IllegalArgumentException may be thrown if the source Raster |
| 82 | * is incompatible with the types of Rasters allowed |
| 83 | * by the class implementing this filter. |
| 84 | * @param src the source <code>Raster</code> |
| 85 | * @return a <code>WritableRaster</code> that is compatible with |
| 86 | * <code>src</code> |
| 87 | */ |
| 88 | public WritableRaster createCompatibleDestRaster(Raster src); |
| 89 | |
| 90 | /** |
| 91 | * Returns the location of the destination point given a |
| 92 | * point in the source Raster. If dstPt is non-null, it |
| 93 | * will be used to hold the return value. |
| 94 | * @param srcPt the source <code>Point2D</code> |
| 95 | * @param dstPt the destination <code>Point2D</code> |
| 96 | * @return the location of the destination point. |
| 97 | */ |
| 98 | public Point2D getPoint2D(Point2D srcPt, Point2D dstPt); |
| 99 | |
| 100 | /** |
| 101 | * Returns the rendering hints for this RasterOp. Returns |
| 102 | * null if no hints have been set. |
| 103 | * @return the <code>RenderingHints</code> object of this |
| 104 | * <code>RasterOp</code>. |
| 105 | */ |
| 106 | public RenderingHints getRenderingHints(); |
| 107 | } |