How to use

getNumYTiles

method

in

java.awt.image.WritableRenderedImage

/**
 * Sets every samples in the given image to the given value. This method is typically used for
 * clearing an image content.
 *
 * @param image The image to fill.
 * @param value The value to to given to every samples.
 */
public static void fill(final WritableRenderedImage image, final Number value) {
  int y = image.getMinTileY();
  for (int ny = image.getNumYTiles(); --ny >= 0; ) {
    int x = image.getMinTileX();
    for (int nx = image.getNumXTiles(); --nx >= 0; ) {
      final WritableRaster raster = image.getWritableTile(x, y);
      try {
        fill(raster.getDataBuffer(), value);
      } finally {
        image.releaseWritableTile(x, y);
      }
    }
  }
}

/**
 * Sets every samples in the given image to the given value. This method is typically used
 * for clearing an image content.
 *
 * @param image The image to fill.
 * @param value The value to to given to every samples.
 */
public static void fill(final WritableRenderedImage image, final Number value) {
  int y = image.getMinTileY();
  for (int ny = image.getNumYTiles(); --ny >= 0;) {
    int x = image.getMinTileX();
    for (int nx = image.getNumXTiles(); --nx >= 0;) {
      final WritableRaster raster = image.getWritableTile(x, y);
      try {
        fill(raster.getDataBuffer(), value);
      } finally {
        image.releaseWritableTile(x, y);
      }
    }
  }
}

/**
 * Sets every samples in the given image to the given value. This method is typically used
 * for clearing an image content.
 *
 * @param image The image to fill.
 * @param value The value to be given to every samples.
 */
public static void fill(final WritableRenderedImage image, final Number value) {
  int y = image.getMinTileY();
  for (int ny = image.getNumYTiles(); --ny >= 0; y++) {
    int x = image.getMinTileX();
    for (int nx = image.getNumXTiles(); --nx >= 0; x++) {
      final WritableRaster raster = image.getWritableTile(x, y);
      try {
        fill(raster.getDataBuffer(), value);
      } finally {
        image.releaseWritableTile(x, y);
      }
    }
  }
}

|| rimty != wrimty
|| renderedImage.getNumXTiles() != writableRI.getNumXTiles()
|| renderedImage.getNumYTiles() != writableRI.getNumYTiles()
|| renderedImage.getTileGridXOffset() != writableRI.getTileGridXOffset()
|| renderedImage.getTileGridYOffset() != writableRI.getTileGridYOffset()

|| rimtx != wrimtx || rimty != wrimty
|| renderedImage.getNumXTiles() != writableRI.getNumXTiles()
|| renderedImage.getNumYTiles() != writableRI.getNumYTiles())
throw new IllegalArgumentException("rendered image and writable rendered image dimensions are not conform"+renderedImage+writableRI);