private void addGeoTiffTags(final Product product) {
final GeoTIFFMetadata geoTIFFMetadata = ProductUtils.createGeoTIFFMetadata(product);
if (geoTIFFMetadata == null) {
return;
}
// for debug purpose
// geoTIFFMetadata.dump();
final int numEntries = geoTIFFMetadata.getNumGeoKeyEntries();
final TiffShort[] directoryTagValues = new TiffShort[numEntries * 4];
final ArrayList<TiffDouble> doubleValues = new ArrayList<>();
final ArrayList<String> asciiValues = new ArrayList<>();
for (int i = 0; i < numEntries; i++) {
final GeoTIFFMetadata.KeyEntry entry = geoTIFFMetadata.getGeoKeyEntryAt(i);
final int[] data = entry.getData();
for (int j = 0; j < data.length; j++) {
directoryTagValues[i * 4 + j] = new TiffShort(data[j]);
}
if (data[1] == TiffTag.GeoDoubleParamsTag.getValue()) {
directoryTagValues[i * 4 + 3] = new TiffShort(doubleValues.size());
final double[] geoDoubleParams = geoTIFFMetadata.getGeoDoubleParams(data[0]);
for (double geoDoubleParam : geoDoubleParams) {
doubleValues.add(new TiffDouble(geoDoubleParam));
}
}
if (data[1] == TiffTag.GeoAsciiParamsTag.getValue()) {
int sizeInBytes = 0;
for (String asciiValue : asciiValues) {
sizeInBytes += asciiValue.length() + 1;
}
directoryTagValues[i * 4 + 3] = new TiffShort(sizeInBytes);
asciiValues.add(geoTIFFMetadata.getGeoAsciiParam(data[0]));
}
}
setEntry(new TiffDirectoryEntry(TiffTag.GeoKeyDirectoryTag, directoryTagValues));
if (!doubleValues.isEmpty()) {
final TiffDouble[] tiffDoubles = doubleValues.toArray(new TiffDouble[doubleValues.size()]);
setEntry(new TiffDirectoryEntry(TiffTag.GeoDoubleParamsTag, tiffDoubles));
}
if (!asciiValues.isEmpty()) {
final String[] tiffAsciies = asciiValues.toArray(new String[asciiValues.size()]);
setEntry(new TiffDirectoryEntry(TiffTag.GeoAsciiParamsTag, new GeoTiffAscii(tiffAsciies)));
}
double[] modelTransformation = geoTIFFMetadata.getModelTransformation();
if (!isZeroArray(modelTransformation)) {
setEntry(
new TiffDirectoryEntry(
TiffTag.ModelTransformationTag, toTiffDoubles(modelTransformation)));
} else {
double[] modelPixelScale = geoTIFFMetadata.getModelPixelScale();
if (!isZeroArray(modelPixelScale)) {
setEntry(
new TiffDirectoryEntry(TiffTag.ModelPixelScaleTag, toTiffDoubles(modelPixelScale)));
}
final int numModelTiePoints = geoTIFFMetadata.getNumModelTiePoints();
if (numModelTiePoints > 0) {
final TiffDouble[] tiePoints = new TiffDouble[numModelTiePoints * 6];
for (int i = 0; i < numModelTiePoints; i++) {
final GeoTIFFMetadata.TiePoint modelTiePoint = geoTIFFMetadata.getModelTiePointAt(i);
final double[] data = modelTiePoint.getData();
for (int j = 0; j < data.length; j++) {
tiePoints[i * 6 + j] = new TiffDouble(data[j]);
}
}
setEntry(new TiffDirectoryEntry(TiffTag.ModelTiepointTag, tiePoints));
}
}
}
