コード例 #1
0
  public BufferedImage createLegendImage(
      VPFSymbolAttributes attr, int width, int height, int margin) {
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_4BYTE_ABGR);
    Graphics2D g2 = image.createGraphics();
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    switch (attr.getFeatureType()) {
      case POINT:
        this.drawPointLegend(attr, g2, width, height, margin);
        break;
      case LINE:
        this.drawLineLegend(attr, g2, width, height, margin);
        break;
      case AREA:
        this.drawAreaLegend(attr, g2, width, height, margin);
        break;
    }

    return image;
  }
  public BufferedImage composeImageForSector(
      Sector sector,
      int imageWidth,
      int imageHeight,
      int levelNumber,
      String mimeType,
      boolean abortOnError,
      BufferedImage image) {
    if (sector == null) {
      String message = Logging.getMessage("nullValue.SectorIsNull");
      Logging.logger().severe(message);
      throw new IllegalStateException(message);
    }

    if (levelNumber < 0) {
      levelNumber = this.levels.getLastLevel().getLevelNumber();
    } else if (levelNumber > this.levels.getLastLevel().getLevelNumber()) {
      Logging.logger()
          .warning(
              Logging.getMessage(
                  "generic.LevelRequestedGreaterThanMaxLevel",
                  levelNumber,
                  this.levels.getLastLevel().getLevelNumber()));
      levelNumber = this.levels.getLastLevel().getLevelNumber();
    }

    MercatorTextureTile[][] tiles = this.getTilesInSector(sector, levelNumber);

    if (tiles.length == 0 || tiles[0].length == 0) {
      Logging.logger().severe(Logging.getMessage("layers.TiledImageLayer.NoImagesAvailable"));
      return null;
    }

    if (image == null)
      image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);

    Graphics2D g = image.createGraphics();

    for (MercatorTextureTile[] row : tiles) {
      for (MercatorTextureTile tile : row) {
        if (tile == null) continue;

        BufferedImage tileImage;
        try {
          tileImage = this.getImage(tile, mimeType);

          double sh =
              ((double) imageHeight / (double) tileImage.getHeight())
                  * (tile.getSector().getDeltaLat().divide(sector.getDeltaLat()));
          double sw =
              ((double) imageWidth / (double) tileImage.getWidth())
                  * (tile.getSector().getDeltaLon().divide(sector.getDeltaLon()));

          double dh =
              imageHeight
                  * (-tile.getSector().getMaxLatitude().subtract(sector.getMaxLatitude()).degrees
                      / sector.getDeltaLat().degrees);
          double dw =
              imageWidth
                  * (tile.getSector().getMinLongitude().subtract(sector.getMinLongitude()).degrees
                      / sector.getDeltaLon().degrees);

          AffineTransform txf = g.getTransform();
          g.translate(dw, dh);
          g.scale(sw, sh);
          g.drawImage(tileImage, 0, 0, null);
          g.setTransform(txf);
        } catch (Exception e) {
          if (abortOnError) throw new RuntimeException(e);

          String message =
              Logging.getMessage("generic.ExceptionWhileRequestingImage", tile.getPath());
          Logging.logger().log(java.util.logging.Level.WARNING, message, e);
        }
      }
    }

    return image;
  }