Java Code Examples for java.awt.image.RenderedImage#getMinTileY()

/**
 * Creates an iterator for the given region in the given image.
 *
 * @param  input    the image which contains the sample values to read.
 * @param  output   the image where to write the sample values, or {@code null} for read-only iterator.
 * @param  subArea  the image region where to perform the iteration, or {@code null}
 *                  for iterating over all the image domain.
 * @param  window   size of the window to use in {@link #createWindow(TransferType)} method, or {@code null} if none.
 */
WritablePixelIterator(final RenderedImage input, final WritableRenderedImage output,
                      final Rectangle subArea, final Dimension window)
{
    super(input, subArea, window);
    destRaster  = null;
    destination = output;
    if (output != null) {
        if (!input.getSampleModel().equals(output.getSampleModel())) {
            throw new IllegalArgumentException(Resources.format(Resources.Keys.MismatchedSampleModel));
        } else if (input.getMinX()   != output.getMinX()  ||
                   input.getMinY()   != output.getMinY()  ||
                   input.getWidth()  != output.getWidth() ||
                   input.getHeight() != output.getHeight())
        {
            throw new IllegalArgumentException(Resources.format(Resources.Keys.MismatchedImageLocation));
        } else if (input.getMinTileX()   != output.getMinTileX()  ||
                   input.getMinTileY()   != output.getMinTileY()  ||
                   input.getTileWidth()  != output.getTileWidth() ||
                   input.getTileHeight() != output.getTileHeight())
        {
            throw new IllegalArgumentException(Resources.format(Resources.Keys.MismatchedTileGrid));
        }
    }
}
 

private static long getNumMaskPixels(final RenderedImage maskImage, int sceneRasterWidth, int sceneRasterHeight) {
    final int minTileX = maskImage.getMinTileX();
    final int minTileY = maskImage.getMinTileY();

    final int numXTiles = maskImage.getNumXTiles();
    final int numYTiles = maskImage.getNumYTiles();

    final Rectangle imageRect = new Rectangle(0, 0, sceneRasterWidth, sceneRasterHeight);

    long numMaskPixels = 0;
    for (int tileX = minTileX; tileX < minTileX + numXTiles; ++tileX) {
        for (int tileY = minTileY; tileY < minTileY + numYTiles; ++tileY) {
            final Rectangle tileRectangle = new Rectangle(maskImage.getTileGridXOffset() + tileX * maskImage.getTileWidth(),
                                                          maskImage.getTileGridYOffset() + tileY * maskImage.getTileHeight(),
                                                          maskImage.getTileWidth(), maskImage.getTileHeight());

            final Rectangle r = imageRect.intersection(tileRectangle);
            if (!r.isEmpty()) {
                Raster maskTile = maskImage.getTile(tileX, tileY);
                for (int y = r.y; y < r.y + r.height; y++) {
                    for (int x = r.x; x < r.x + r.width; x++) {
                        if (maskTile.getSample(x, y, 0) != 0) {
                            numMaskPixels++;
                        }
                    }
                }
            }
        }
    }
    return numMaskPixels;
}
 

private Rectangle2D handleImageMask(Mask mask, AffineTransform i2m) {
    RenderedImage image = mask.getSourceImage().getImage(0);
    final int minTileX = image.getMinTileX();
    final int minTileY = image.getMinTileY();
    final int numXTiles = image.getNumXTiles();
    final int numYTiles = image.getNumYTiles();
    final int width = image.getWidth();
    final int height = image.getHeight();
    int minX = width;
    int maxX = 0;
    int minY = height;
    int maxY = 0;

    for (int tileX = minTileX; tileX < minTileX + numXTiles; ++tileX) {
        for (int tileY = minTileY; tileY < minTileY + numYTiles; ++tileY) {
            final Raster data = image.getTile(tileX, tileY);
            for (int x = data.getMinX(); x < data.getMinX() + data.getWidth(); x++) {
                for (int y = data.getMinY(); y < data.getMinY() + data.getHeight(); y++) {
                    if (data.getSample(x, y, 0) != 0) {
                        minX = Math.min(x, minX);
                        maxX = Math.max(x, maxX);
                        minY = Math.min(y, minY);
                        maxY = Math.max(y, maxY);
                    }
                }
            }
        }
    }
    Rectangle rect = new Rectangle(minX, minY, maxX - minX + 1, maxY - minY + 1);
    if (rect.isEmpty()) {
        return null;
    } else {
        return i2m.createTransformedShape(rect).getBounds2D();
    }
}
 

/**
 * Writes all pixel values of the given product within the given Mask to the specified out.
 *
 * @param out      the data output writer
 * @param product  the product providing the pixel values
 * @param maskName the mask name
 * @param mustCreateHeader
 * @param mustExportTiePoints
 * @param mustExportWavelengthsAndSF
 * @param pm       progress monitor
 * @return <code>true</code> for success, <code>false</code> if export has been terminated (by user)
 */
private static boolean exportMaskPixels(final PrintWriter out,
                                        final Product product,
                                        String maskName,
                                        boolean mustCreateHeader,
                                        boolean mustExportTiePoints,
                                        boolean mustExportWavelengthsAndSF,
                                        ProgressMonitor pm) throws IOException {

    final RenderedImage maskImage = product.getMaskGroup().get(maskName).getSourceImage();

    final int minTileX = maskImage.getMinTileX();
    final int minTileY = maskImage.getMinTileY();

    final int numXTiles = maskImage.getNumXTiles();
    final int numYTiles = maskImage.getNumYTiles();

    final int w = product.getSceneRasterWidth();
    final int h = product.getSceneRasterHeight();

    final Rectangle imageRect = new Rectangle(0, 0, w, h);

    pm.beginTask("Writing pixel data...", numXTiles * numYTiles + 2);
    try {
        if (mustCreateHeader) {
            createHeader(out, product, maskName, mustExportWavelengthsAndSF);
        }
        pm.worked(1);
        writeColumnNames(out, product, maskName, mustExportTiePoints);
        pm.worked(1);

        for (int tileX = minTileX; tileX < minTileX + numXTiles; ++tileX) {
            for (int tileY = minTileY; tileY < minTileY + numYTiles; ++tileY) {
                if (pm.isCanceled()) {
                    return false;
                }
                final Rectangle tileRectangle = new Rectangle(maskImage.getTileGridXOffset() + tileX * maskImage.getTileWidth(),
                                                              maskImage.getTileGridYOffset() + tileY * maskImage.getTileHeight(),
                                                              maskImage.getTileWidth(), maskImage.getTileHeight());

                final Rectangle r = imageRect.intersection(tileRectangle);
                if (!r.isEmpty()) {
                    Raster maskTile = maskImage.getTile(tileX, tileY);
                    for (int y = r.y; y < r.y + r.height; y++) {
                        for (int x = r.x; x < r.x + r.width; x++) {
                            if (maskTile.getSample(x, y, 0) != 0) {
                                writeDataLine(out, product, maskName, x, y, mustExportTiePoints);
                            }
                        }
                    }
                }
                pm.worked(1);
            }
        }
    } finally {
        pm.done();
    }

    return true;
}