public ImageFormatter serviceRequest(IMapRequest req) throws IOException, WMSServiceException {
ImageFormatter formatter = null;
try {
Sector reqExtent =
(SingleFileLayer.this.isElevation)
? req.getExtentForElevationRequest()
: req.getExtent();
if (null == this.intersects(reqExtent, SingleFileLayer.this.getBBox())) {
String msg =
Logging.getMessage(
"WMS.Layer.OutOfCoverage",
reqExtent.toString(),
SingleFileLayer.this.getBBox().toString());
Logging.logger().severe(msg);
throw new WMSServiceException(msg);
}
if (req.getHeight() <= 0 || req.getWidth() <= 0) {
String msg =
Logging.getMessage("generic.InvalidImageSize", req.getWidth(), req.getHeight());
Logging.logger().severe(msg);
throw new WMSServiceException(msg);
}
DataRaster[] rasters = SingleFileLayer.this.rasters;
if (null == rasters || 0 == rasters.length) {
String msg = Logging.getMessage("nullValue.RasterIsNull");
Logging.logger().severe(msg);
throw new WMSServiceException(msg);
}
double missingDataReplacement = (double) SingleFileLayer.this.nodataReplacement;
try {
String s = req.getBGColor();
if (null != s) {
missingDataReplacement = Double.parseDouble(s);
}
} catch (Exception e) {
missingDataReplacement = (double) SingleFileLayer.this.nodataReplacement;
}
DataRaster raster = rasters[0];
if (raster instanceof BufferedImageRaster) {
BufferedImageRaster reqRaster =
new BufferedImageRaster(
req.getWidth(), req.getHeight(), Transparency.TRANSLUCENT, reqExtent);
raster.drawOnTo(reqRaster);
BufferedImage img = reqRaster.getBufferedImage();
this.makeNoDataTransparent(
img, SingleFileLayer.this.nodataSignal, (short) missingDataReplacement);
formatter = new BufferedImageFormatter(img);
} else if (raster instanceof ByteBufferRaster) {
AVList reqParams = new AVListImpl();
reqParams.setValue(AVKey.WIDTH, req.getWidth());
reqParams.setValue(AVKey.HEIGHT, req.getHeight());
reqParams.setValue(AVKey.SECTOR, reqExtent);
reqParams.setValue(
AVKey.BYTE_ORDER, AVKey.LITTLE_ENDIAN); // by default BIL is LITTLE ENDIAN
reqParams.setValue(AVKey.PIXEL_FORMAT, AVKey.ELEVATION);
String reqFormat = req.getFormat();
if (null != reqFormat && reqFormat.endsWith("32")) {
reqParams.setValue(AVKey.DATA_TYPE, AVKey.FLOAT32);
} else {
reqParams.setValue(AVKey.DATA_TYPE, AVKey.INT16);
}
reqParams.setValue(AVKey.MISSING_DATA_REPLACEMENT, missingDataReplacement);
ByteBufferRaster reqRaster =
new ByteBufferRaster(req.getWidth(), req.getHeight(), reqExtent, reqParams);
raster.drawOnTo(reqRaster);
if (SingleFileLayer.this.convertFeetToMeters) {
this.convertFeetToMeters(reqRaster);
}
formatter = new DataRasterFormatter(reqRaster);
} else {
String msg =
Logging.getMessage(
"generic.UnrecognizedImageSourceType", raster.getClass().getName());
Logging.logger().severe(msg);
throw new WMSServiceException(msg);
}
} catch (WMSServiceException wmsse) {
throw wmsse;
} catch (Exception ex) {
Logging.logger()
.log(
java.util.logging.Level.SEVERE,
SingleFileLayer.this.getThreadId() + ex.getMessage(),
ex);
// throw new WMSServiceException( s );
} finally {
}
return formatter;
}
protected double calcPixelSizeOfRequestArea(IMapRequest req) {
Sector reqSector = req.getExtent();
double reqHeight = (double) ((req.getHeight() > 0) ? req.getHeight() : 512);
return (reqSector.getDeltaLatDegrees() / reqHeight);
}