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;
}