/** @throws IOException */
static MathTransform parseWorldFile(Object source) throws IOException {
MathTransform raster2Model = null;
// TODO: Add support for FileImageInputStreamExt
// TODO: Check for WorldFile on URL beside the actual connection.
if (source instanceof File) {
final File sourceFile = ((File) source);
String parentPath = sourceFile.getParent();
String filename = sourceFile.getName();
final int i = filename.lastIndexOf('.');
filename = (i == -1) ? filename : filename.substring(0, i);
// getting name and extension
final String base =
(parentPath != null)
? new StringBuilder(parentPath).append(File.separator).append(filename).toString()
: filename;
// We can now construct the baseURL from this string.
File file2Parse = new File(new StringBuilder(base).append(".wld").toString());
if (file2Parse.exists()) {
final WorldFileReader reader = new WorldFileReader(file2Parse);
raster2Model = reader.getTransform();
} else {
// looking for another extension
file2Parse = new File(new StringBuilder(base).append(".tfw").toString());
if (file2Parse.exists()) {
// parse world file
final WorldFileReader reader = new WorldFileReader(file2Parse);
raster2Model = reader.getTransform();
}
}
}
return raster2Model;
}
/**
* Checks whether a world file is associated with the data source. If found, set a proper
* envelope.
*
* @throws IllegalStateException
* @throws IOException
*/
protected void parseWorldFile() {
final String worldFilePath =
new StringBuffer(this.parentPath)
.append(GridCoverageUtilities.SEPARATOR)
.append(coverageName)
.toString();
File file2Parse = null;
boolean worldFileExists = false;
// //
//
// Check for a world file with the format specific extension
//
// //
if (worldFileExt != null && worldFileExt.length() > 0) {
file2Parse = new File(worldFilePath + worldFileExt);
worldFileExists = file2Parse.exists();
}
// //
//
// Check for a world file with the default extension
//
// //
if (!worldFileExists) {
file2Parse = new File(worldFilePath + GridCoverageUtilities.DEFAULT_WORLDFILE_EXT);
worldFileExists = file2Parse.exists();
}
if (worldFileExists) {
try {
final WorldFileReader reader = new WorldFileReader(file2Parse);
raster2Model = reader.getTransform();
// //
//
// In case we read from a real world file we have together the
// envelope. World file transformation assumes to work in the
// CELL_CENTER condition
//
// //
MathTransform tempTransform =
PixelTranslation.translate(
raster2Model, PixelInCell.CELL_CENTER, PixelInCell.CELL_CORNER);
final Envelope gridRange = new GeneralEnvelope((GridEnvelope2D) originalGridRange);
final GeneralEnvelope coverageEnvelope = CRS.transform(tempTransform, gridRange);
originalEnvelope = coverageEnvelope;
return;
} catch (TransformException e) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
} catch (IllegalStateException e) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
} catch (IOException e) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING, e.getLocalizedMessage(), e);
}
}
}
// if we got here we did not find a suitable transform
raster2Model = null;
}