public boolean extractTiffMetadata(File tifFile, TiffMeta surface)
throws UnknownCRSException, FactoryException, TransformException, IOException {
Preconditions.checkArgument(tifFile != null, "File is null.");
GeoTiffReader gtr = new GeoTiffReader(tifFile);
try {
CoordinateReferenceSystem crs = gtr.getCoordinateReferenceSystem();
surface.setCRS(crs);
Integer epsgCode = CRS.lookupEpsgCode(crs, true);
if (epsgCode == null) {
ReferenceIdentifier name = crs.getName();
String crsName = "Unknown";
if (name != null) {
crsName = name.toString();
}
throw new UnknownCRSException(crsName);
}
String srid = "EPSG:" + epsgCode;
surface.setSrid(srid);
//
// extremaOp(surface, gtr.read(null));
/*
* Build the envelope and set to WGS84
*/
GeneralEnvelope origEnv = gtr.getOriginalEnvelope();
DirectPosition ll = origEnv.getLowerCorner();
DirectPosition ur = origEnv.getUpperCorner();
Envelope e = new Envelope();
e.expandToInclude(ll.getOrdinate(0), ll.getOrdinate(1));
e.expandToInclude(ur.getOrdinate(0), ur.getOrdinate(1));
Geometry poly = envelopeToWgs84(epsgCode, e);
if (poly instanceof Polygon) {
surface.setEnvelope((Polygon) poly);
}
/*
* Figure out the pixel size
*/
ImageLayout imageLayout = gtr.getImageLayout();
int imageWidth = imageLayout.getWidth(null);
int imageHeight = imageLayout.getHeight(null);
double pixelSizeX = e.getWidth() / imageWidth;
double pixelSizeY = e.getHeight() / imageHeight;
surface.setPixelSizeX(pixelSizeX);
surface.setPixelSizeY(pixelSizeY);
surface.setMinVal(0d);
surface.setMaxVal(100d);
GridCoverage2D gridCoverage2D = gtr.read(null);
try {
int nDims = gridCoverage2D.getNumSampleDimensions();
surface.setNumSampleDimensions(nDims);
extremaOp(surface, gridCoverage2D);
} finally {
gridCoverage2D.dispose(false);
}
} finally {
gtr.dispose();
}
return true;
}
