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Java Source | 1998-03-20 | 2.9 KB | 76 lines |
- /*
- * @(#)RasterOp.java 1.4 98/03/18
- *
- * Copyright 1997 by Sun Microsystems, Inc.,
- * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
- * All rights reserved.
- *
- * This software is the confidential and proprietary information
- * of Sun Microsystems, Inc. ("Confidential Information"). You
- * shall not disclose such Confidential Information and shall use
- * it only in accordance with the terms of the license agreement
- * you entered into with Sun.
- */
-
- package java.awt.image;
-
- import java.awt.geom.Rectangle2D;
- import java.awt.geom.Point2D;
-
- /**
- * This is an interface that describes single-input/single-output
- * operations performed on Raster objects. This is implemented by such
- * classes as AffineTransformOp, ConvolveOp, and LookupOp. The Source
- * and Destination objects must contain the appropriate number
- * of channels for the particular classes implementing this interface.
- * Otherwise, an exception is thrown. This interface cannot be used to
- * describe more sophisticated Ops such as ones that take multiple sources.
- * Each class implementing this interface will specify whether or not it
- * will allow an in-place filtering operation (i.e. source object equal
- * to the destination object). Note that the restriction to single-input
- * operations means that the values of destination pixels prior to the
- * operation are not used as input to the filter operation.
- * @see AffineTransformOp
- * @see BandCombineOp
- * @see ColorConvertOp
- * @see ConvolveOp
- * @see LookupOp
- * @see RescaleOp
- * @see ThresholdOp
- * @version 10 Feb 1997
- */
- public interface RasterOp {
- /**
- * Performs a single-input/single-output operation from a source Raster
- * to a destination Raster. If the destination Raster does not exist, a
- * new Raster will be created. The IllegalArgumentException may be thrown
- * if the source and/or destination Raster is incompatible with the types
- * of Rasters allowed by the subclass implementing this filter.
- */
- public WritableRaster filter(Raster src, WritableRaster dest);
-
- /**
- * Returns the bounding box of the filtered destination Raster.
- * The IllegalArgumentException may be thrown if the source Raster
- * is incompatible with the types of Rasters allowed
- * by the subclass implementing this filter.
- */
- public Rectangle2D getDestBounds(Raster src);
-
- /**
- * Creates an empty destination Raster with the correct size and number of
- * channels.
- * The IllegalArgumentException may be thrown if the source Raster
- * is incompatible with the types of Rasters allowed
- * by the subclass implementing this filter.
- */
- public WritableRaster createCompatibleDestRaster(Raster src);
-
- /**
- * Returns the location of the destination point given a
- * point in the source Raster. If dstPt is non-null, it
- * will be used to hold the return value.
- */
- public Point2D getDestPoint(Point2D srcPt, Point2D dstPt);
- }
-