Ejemplo n.º 1
0
  @Override
  protected void computeRect(
      final PlanarImage[] sources, final WritableRaster dest, final Rectangle destRect) {
    final PlanarImage source = sources[0];
    final Rectangle bounds = destRect.intersection(source.getBounds());
    if (!destRect.equals(bounds)) {
      // TODO: Check if this case occurs sometime, and fill pixel values if it does.
      //       If it happen to occurs, we will need to fix other GeoTools operations
      //       as well.
      Logging.getLogger(TransformException.class)
          .warning("Bounds mismatch: " + destRect + " and " + bounds);
    }
    WritableRectIter iterator = RectIterFactory.createWritable(dest, bounds);

    // TODO: Detect if source and destination rasters are the same. If they are
    //       the same, we should skip this block. Iteration will then be faster.
    iterator = TransfertRectIter.create(RectIterFactory.create(source, bounds), iterator);

    if (!iterator.finishedBands()) {
      do {
        recode(iterator);
      } while (!iterator.nextBandDone());
    }
  }
Ejemplo n.º 2
0
  /**
   * Paint the image onto a Graphics object. The painting is performed tile-by-tile, and includes a
   * grey region covering the unused portion of image tiles as well as the general background. At
   * this point the image must be byte data.
   */
  public synchronized void paintComponent(Graphics g) {

    Graphics2D g2D = null;
    if (g instanceof Graphics2D) {
      g2D = (Graphics2D) g;
    } else {
      return;
    }

    // if source is null, it's just a component
    if (source == null) {
      g2D.setColor(getBackground());
      g2D.fillRect(0, 0, componentWidth, componentHeight);
      return;
    }

    int transX = -originX;
    int transY = -originY;

    // Get the clipping rectangle and translate it into image coordinates.
    Rectangle clipBounds = g.getClipBounds();

    if (clipBounds == null) {
      clipBounds = new Rectangle(0, 0, componentWidth, componentHeight);
    }

    // clear the background (clip it) [minimal optimization here]
    if (transX > 0
        || transY > 0
        || transX < (componentWidth - source.getWidth())
        || transY < (componentHeight - source.getHeight())) {
      g2D.setColor(getBackground());
      g2D.fillRect(0, 0, componentWidth, componentHeight);
    }

    clipBounds.translate(-transX, -transY);

    // Determine the extent of the clipping region in tile coordinates.
    int txmin, txmax, tymin, tymax;
    int ti, tj;

    txmin = XtoTileX(clipBounds.x);
    txmin = Math.max(txmin, minTileX);
    txmin = Math.min(txmin, maxTileX);

    txmax = XtoTileX(clipBounds.x + clipBounds.width - 1);
    txmax = Math.max(txmax, minTileX);
    txmax = Math.min(txmax, maxTileX);

    tymin = YtoTileY(clipBounds.y);
    tymin = Math.max(tymin, minTileY);
    tymin = Math.min(tymin, maxTileY);

    tymax = YtoTileY(clipBounds.y + clipBounds.height - 1);
    tymax = Math.max(tymax, minTileY);
    tymax = Math.min(tymax, maxTileY);
    Insets insets = getInsets();

    // Loop over tiles within the clipping region
    for (tj = tymin; tj <= tymax; tj++) {
      for (ti = txmin; ti <= txmax; ti++) {
        int tx = TileXtoX(ti);
        int ty = TileYtoY(tj);

        Raster tile = source.getTile(ti, tj);
        if (tile != null) {
          DataBuffer dataBuffer = tile.getDataBuffer();

          WritableRaster wr = tile.createWritableRaster(sampleModel, dataBuffer, null);

          BufferedImage bi =
              new BufferedImage(colorModel, wr, colorModel.isAlphaPremultiplied(), null);

          // correctly handles band offsets
          if (brightnessEnabled == true) {
            SampleModel sm =
                sampleModel.createCompatibleSampleModel(tile.getWidth(), tile.getHeight());

            WritableRaster raster = RasterFactory.createWritableRaster(sm, null);

            BufferedImage bimg =
                new BufferedImage(colorModel, raster, colorModel.isAlphaPremultiplied(), null);

            // don't move this code
            ByteLookupTable lutTable = new ByteLookupTable(0, lutData);
            LookupOp lookup = new LookupOp(lutTable, null);
            lookup.filter(bi, bimg);

            g2D.drawImage(bimg, biop, tx + transX + insets.left, ty + transY + insets.top);
          } else {
            AffineTransform transform;

            transform =
                AffineTransform.getTranslateInstance(
                    tx + transX + insets.left, ty + transY + insets.top);

            g2D.drawRenderedImage(bi, transform);
          }
        }
      }
    }
  }
Ejemplo n.º 3
0
    private void readTileData(
        File outputFile,
        int tileX,
        int tileY,
        int tileWidth,
        int tileHeight,
        int jp2TileX,
        int jp2TileY,
        int jp2TileWidth,
        int jp2TileHeight,
        short[] tileData,
        Rectangle destRect)
        throws IOException {

      synchronized (this) {
        if (!locks.containsKey(outputFile)) {
          locks.put(outputFile, new Object());
        }
      }
      final Object lock = locks.get(outputFile);

      synchronized (lock) {
        Jp2File jp2File = getOpenJ2pFile(outputFile);

        int jp2Width = jp2File.width;
        int jp2Height = jp2File.height;
        if (jp2Width > jp2TileWidth || jp2Height > jp2TileHeight) {
          throw new IllegalStateException(
              String.format(
                  "width (=%d) > tileWidth (=%d) || height (=%d) > tileHeight (=%d)",
                  jp2Width, jp2TileWidth, jp2Height, jp2TileHeight));
        }

        int jp2X = destRect.x - jp2TileX * jp2TileWidth;
        int jp2Y = destRect.y - jp2TileY * jp2TileHeight;
        if (jp2X < 0 || jp2Y < 0) {
          throw new IllegalStateException(
              String.format("jp2X (=%d) < 0 || jp2Y (=%d) < 0", jp2X, jp2Y));
        }

        final ImageInputStream stream = jp2File.stream;

        if (jp2X == 0
            && jp2Width == tileWidth
            && jp2Y == 0
            && jp2Height == tileHeight
            && tileWidth * tileHeight == tileData.length) {
          stream.seek(jp2File.dataPos);
          stream.readFully(tileData, 0, tileData.length);
        } else {
          final Rectangle jp2FileRect = new Rectangle(0, 0, jp2Width, jp2Height);
          final Rectangle tileRect = new Rectangle(jp2X, jp2Y, tileWidth, tileHeight);
          final Rectangle intersection = jp2FileRect.intersection(tileRect);
          System.out.printf(
              "%s: tile=(%d,%d): jp2FileRect=%s, tileRect=%s, intersection=%s\n",
              jp2File.file, tileX, tileY, jp2FileRect, tileRect, intersection);
          if (!intersection.isEmpty()) {
            long seekPos =
                jp2File.dataPos + NUM_SHORT_BYTES * (intersection.y * jp2Width + intersection.x);
            int tilePos = 0;
            for (int y = 0; y < intersection.height; y++) {
              stream.seek(seekPos);
              stream.readFully(tileData, tilePos, intersection.width);
              seekPos += NUM_SHORT_BYTES * jp2Width;
              tilePos += tileWidth;
              for (int x = intersection.width; x < tileWidth; x++) {
                tileData[y * tileWidth + x] = (short) 0;
              }
            }
            for (int y = intersection.height; y < tileWidth; y++) {
              for (int x = 0; x < tileWidth; x++) {
                tileData[y * tileWidth + x] = (short) 0;
              }
            }
          } else {
            Arrays.fill(tileData, (short) 0);
          }
        }
      }
    }