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Diffstat (limited to 'libjava/java/awt/image/AffineTransformOp.java')
| -rw-r--r-- | libjava/java/awt/image/AffineTransformOp.java | 375 |
1 files changed, 0 insertions, 375 deletions
diff --git a/libjava/java/awt/image/AffineTransformOp.java b/libjava/java/awt/image/AffineTransformOp.java deleted file mode 100644 index f11066e4e3d..00000000000 --- a/libjava/java/awt/image/AffineTransformOp.java +++ /dev/null @@ -1,375 +0,0 @@ -/* AffineTransformOp.java -- This class performs affine - transformation between two images or rasters in 2 dimensions. - Copyright (C) 2004 Free Software Foundation - -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; - -import java.awt.Graphics2D; -import java.awt.Rectangle; -import java.awt.RenderingHints; -import java.awt.geom.AffineTransform; -import java.awt.geom.NoninvertibleTransformException; -import java.awt.geom.Point2D; -import java.awt.geom.Rectangle2D; -import java.util.Arrays; - -/** - * This class performs affine transformation between two images or - * rasters in 2 dimensions. - * - * @author Olga Rodimina (rodimina@redhat.com) - */ -public class AffineTransformOp implements BufferedImageOp, RasterOp -{ - public static final int TYPE_NEAREST_NEIGHBOR = 1; - - public static final int TYPE_BILINEAR = 2; - - /** - * @since 1.5.0 - */ - public static final int TYPE_BICUBIC = 3; - - private AffineTransform transform; - private RenderingHints hints; - - /** - * Construct AffineTransformOp with the given xform and interpolationType. - * Interpolation type can be TYPE_BILINEAR, TYPE_BICUBIC or - * TYPE_NEAREST_NEIGHBOR. - * - * @param xform AffineTransform that will applied to the source image - * @param interpolationType type of interpolation used - */ - public AffineTransformOp (AffineTransform xform, int interpolationType) - { - this.transform = xform; - if (xform.getDeterminant() == 0) - throw new ImagingOpException(null); - - switch (interpolationType) - { - case TYPE_BILINEAR: - hints = new RenderingHints (RenderingHints.KEY_INTERPOLATION, - RenderingHints.VALUE_INTERPOLATION_BILINEAR); - break; - case TYPE_BICUBIC: - hints = new RenderingHints (RenderingHints.KEY_INTERPOLATION, - RenderingHints.VALUE_INTERPOLATION_BICUBIC); - break; - default: - hints = new RenderingHints (RenderingHints.KEY_INTERPOLATION, - RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR); - } - } - - /** - * Construct AffineTransformOp with the given xform and rendering hints. - * - * @param xform AffineTransform that will applied to the source image - * @param hints rendering hints that will be used during transformation - */ - public AffineTransformOp (AffineTransform xform, RenderingHints hints) - { - this.transform = xform; - this.hints = hints; - if (xform.getDeterminant() == 0) - throw new ImagingOpException(null); - } - - /** - * Creates empty BufferedImage with the size equal to that of the - * transformed image and correct number of bands. The newly created - * image is created with the specified ColorModel. - * If the ColorModel is equal to null, then image is created - * with the ColorModel of the source image. - * - * @param src source image - * @param destCM color model for the destination image - * @return new compatible destination image - */ - public BufferedImage createCompatibleDestImage (BufferedImage src, - ColorModel destCM) - { - - // if destCm is not specified, use color model of the source image - - if (destCM == null) - destCM = src.getColorModel (); - - return new BufferedImage (destCM, - createCompatibleDestRaster (src.getRaster ()), - src.isAlphaPremultiplied (), - null); - - } - - /** - * Creates empty WritableRaster with the size equal to the transformed - * source raster and correct number of bands - * - * @param src source raster - * @throws RasterFormatException if resulting width or height of raster is 0 - * @return new compatible raster - */ - public WritableRaster createCompatibleDestRaster (Raster src) - { - Rectangle rect = (Rectangle) getBounds2D (src); - - // throw RasterFormatException if resulting width or height of the - // transformed raster is 0 - - if (rect.getWidth () == 0 || rect.getHeight () == 0) - throw new RasterFormatException("width or height is 0"); - - return src.createCompatibleWritableRaster ((int) rect.getWidth (), - (int) rect.getHeight ()); - } - - /** - * Transforms source image using transform specified at the constructor. - * The resulting transformed image is stored in the destination image. - * - * @param src source image - * @param dst destination image - * @return transformed source image - */ - public final BufferedImage filter (BufferedImage src, BufferedImage dst) - { - - if (dst == src) - throw new IllegalArgumentException ("src image cannot be the same as the dst image"); - - // If the destination image is null, then BufferedImage is - // created with ColorModel of the source image - - if (dst == null) - dst = createCompatibleDestImage(src, src.getColorModel ()); - - // FIXME: Must check if color models of src and dst images are the same. - // If it is not, then source image should be converted to color model - // of the destination image - - Graphics2D gr = (Graphics2D) dst.createGraphics (); - gr.setRenderingHints (hints); - gr.drawImage (src, transform, null); - return dst; - - } - - /** - * Transforms source raster using transform specified at the constructor. - * The resulting raster is stored in the destination raster. - * - * @param src source raster - * @param dst destination raster - * @return transformed raster - */ - public final WritableRaster filter (Raster src, WritableRaster dst) - { - if (dst == src) - throw new IllegalArgumentException("src image cannot be the same as" - + " the dst image"); - - if (dst == null) - dst = createCompatibleDestRaster(src); - - if (src.getNumBands() != dst.getNumBands()) - throw new IllegalArgumentException("src and dst must have same number" - + " of bands"); - - double[] dpts = new double[dst.getWidth() * 2]; - double[] pts = new double[dst.getWidth() * 2]; - for (int x = 0; x < dst.getWidth(); x++) - { - dpts[2 * x] = x + dst.getMinX(); - dpts[2 * x + 1] = x; - } - Rectangle srcbounds = src.getBounds(); - if (hints.containsValue(RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR)) - { - for (int y = dst.getMinY(); y < dst.getMinY() + dst.getHeight(); y++) - { - try { - transform.inverseTransform(dpts, 0, pts, 0, dst.getWidth() * 2); - } catch (NoninvertibleTransformException e) { - // Can't happen since the constructor traps this - e.printStackTrace(); - } - - for (int x = 0; x < dst.getWidth(); x++) - { - if (!srcbounds.contains(pts[2 * x], pts[2 * x + 1])) - continue; - dst.setDataElements(x + dst.getMinX(), y, - src.getDataElements((int)pts[2 * x], - (int)pts[2 * x + 1], - null)); - } - } - } - else if (hints.containsValue(RenderingHints.VALUE_INTERPOLATION_BILINEAR)) - { - double[] tmp = new double[4 * src.getNumBands()]; - for (int y = dst.getMinY(); y < dst.getMinY() + dst.getHeight(); y++) - { - try { - transform.inverseTransform(dpts, 0, pts, 0, dst.getWidth() * 2); - } catch (NoninvertibleTransformException e) { - // Can't happen since the constructor traps this - e.printStackTrace(); - } - - for (int x = 0; x < dst.getWidth(); x++) - { - if (!srcbounds.contains(pts[2 * x], pts[2 * x + 1])) - continue; - int xx = (int)pts[2 * x]; - int yy = (int)pts[2 * x + 1]; - double dx = (pts[2 * x] - xx); - double dy = (pts[2 * x + 1] - yy); - - // TODO write this more intelligently - if (xx == src.getMinX() + src.getWidth() - 1 || - yy == src.getMinY() + src.getHeight() - 1) - { - // bottom or right edge - Arrays.fill(tmp, 0); - src.getPixel(xx, yy, tmp); - } - else - { - // Normal case - src.getPixels(xx, yy, 2, 2, tmp); - for (int b = 0; b < src.getNumBands(); b++) - tmp[b] = dx * dy * tmp[b] - + (1 - dx) * dy * tmp[b + src.getNumBands()] - + dx * (1 - dy) * tmp[b + 2 * src.getNumBands()] - + (1 - dx) * (1 - dy) * tmp[b + 3 * src.getNumBands()]; - } - dst.setPixel(x, y, tmp); - } - } - } - else - { - // Bicubic - throw new UnsupportedOperationException("not implemented yet"); - } - - return dst; - } - - /** - * Transforms source image using transform specified at the constructor and - * returns bounds of the transformed image. - * - * @param src image to be transformed - * @return bounds of the transformed image. - */ - public final Rectangle2D getBounds2D (BufferedImage src) - { - return getBounds2D (src.getRaster()); - } - - /** - * Returns bounds of the transformed raster. - * - * @param src raster to be transformed - * @return bounds of the transformed raster. - */ - public final Rectangle2D getBounds2D (Raster src) - { - // determine new size for the transformed raster. - // Need to calculate transformed coordinates of the lower right - // corner of the raster. The upper left corner is always (0,0) - - double x2 = (double) src.getWidth () + src.getMinX (); - double y2 = (double) src.getHeight () + src.getMinY (); - Point2D p2 = getPoint2D (new Point2D.Double (x2,y2), null); - - Rectangle2D rect = new Rectangle (0, 0, (int) p2.getX (), (int) p2.getY ()); - return rect.getBounds (); - } - - /** - * Returns interpolation type used during transformations - * - * @return interpolation type - */ - public final int getInterpolationType () - { - if(hints.containsValue (RenderingHints.VALUE_INTERPOLATION_BILINEAR)) - return TYPE_BILINEAR; - else - return TYPE_NEAREST_NEIGHBOR; - } - - /** - * Returns location of the transformed source point. The resulting point - * is stored in the dstPt if one is specified. - * - * @param srcPt point to be transformed - * @param dstPt destination point - * @return the location of the transformed source point. - */ - public Point2D getPoint2D (Point2D srcPt, Point2D dstPt) - { - return transform.transform (srcPt, dstPt); - } - - /** - * Returns rendering hints that are used during transformation. - * - * @return rendering hints - */ - public final RenderingHints getRenderingHints () - { - return hints; - } - - /** - * Returns transform used in transformation between source and destination - * image. - * - * @return transform - */ - public final AffineTransform getTransform () - { - return transform; - } -} |