/**
* Creates a {@link GridCoverage} for the provided {@link PlanarImage} using the {@link
* #raster2Model} that was provided for this coverage.
*
* <p>This method is vital when working with coverages that have a raster to model transformation
* that is not a simple scale and translate.
*
* @param coverageName
* @param image contains the data for the coverage to create.
* @param raster2Model is the {@link MathTransform} that maps from the raster space to the model
* space.
* @return a {@link GridCoverage}
* @throws IOException
*/
protected final GridCoverage2D createImageCoverage(
String coverageName, PlanarImage image, MathTransform raster2Model) throws IOException {
// creating bands
final SampleModel sm = image.getSampleModel();
final ColorModel cm = image.getColorModel();
final int numBands = sm.getNumBands();
final GridSampleDimension[] bands = new GridSampleDimension[numBands];
// setting bands names.
for (int i = 0; i < numBands; i++) {
final ColorInterpretation colorInterpretation = TypeMap.getColorInterpretation(cm, i);
if (colorInterpretation == null) throw new IOException("Unrecognized sample dimension type");
bands[i] = new GridSampleDimension(colorInterpretation.name()).geophysics(true);
}
// creating coverage
if (raster2Model != null) {
return coverageFactory.create(
coverageName,
image,
getCoordinateReferenceSystem(coverageName),
raster2Model,
bands,
null,
null);
}
return coverageFactory.create(
coverageName,
image,
new GeneralEnvelope(getOriginalEnvelope(coverageName)),
bands,
null,
null);
}
private GridSampleDimension[] getSampleDimensions(final RenderedImage coverageRaster)
throws IOException {
GridSampleDimension[] bands = rasterInfo.getGridSampleDimensions();
// may the image have been promoted? build the correct band info then
final int imageBands = coverageRaster.getSampleModel().getNumBands();
if (bands.length == 1 && imageBands > 1) {
LOGGER.fine(
coverageName
+ " was promoted from 1 to "
+ coverageRaster.getSampleModel().getNumBands()
+ " bands, returning an appropriate set of GridSampleDimension");
// stolen from super.createCoverage:
final ColorModel cm = coverageRaster.getColorModel();
bands = new GridSampleDimension[imageBands];
// setting bands names.
for (int i = 0; i < imageBands; i++) {
final ColorInterpretation colorInterpretation;
colorInterpretation = TypeMap.getColorInterpretation(cm, i);
if (colorInterpretation == null) {
throw new IOException("Unrecognized sample dimension type");
}
bands[i] = new GridSampleDimension(colorInterpretation.name()).geophysics(true);
}
}
return bands;
}
/**
* Creates a {@link GridCoverage} for the provided {@link PlanarImage} using the {@link
* #raster2Model} that was provided for this coverage.
*
* <p>This method is vital when working with coverages that have a raster to model transformation
* that is not a simple scale and translate.
*
* @param image contains the data for the coverage to create.
* @param raster2Model is the {@link MathTransform} that maps from the raster space to the model
* space.
* @return a {@link GridCoverage}
* @throws IOException
*/
protected final GridCoverage2D createCoverage(PlanarImage image, MathTransform raster2Model)
throws IOException {
// creating bands
final SampleModel sm = image.getSampleModel();
final ColorModel cm = image.getColorModel();
final int numBands = sm.getNumBands();
final GridSampleDimension[] bands = new GridSampleDimension[numBands];
// setting bands names.
Category noDataCategory = null;
final Map<String, Double> properties = new HashMap<String, Double>();
if (!Double.isNaN(noData)) {
noDataCategory =
new Category(
Vocabulary.formatInternational(VocabularyKeys.NODATA),
new Color[] {new Color(0, 0, 0, 0)},
NumberRange.create(noData, noData),
NumberRange.create(noData, noData));
properties.put("GC_NODATA", new Double(noData));
}
Set<String> bandNames = new HashSet<String>();
for (int i = 0; i < numBands; i++) {
final ColorInterpretation colorInterpretation = TypeMap.getColorInterpretation(cm, i);
if (colorInterpretation == null) throw new IOException("Unrecognized sample dimension type");
Category[] categories = null;
if (noDataCategory != null) {
categories = new Category[] {noDataCategory};
}
String bandName = colorInterpretation.name();
// make sure we create no duplicate band names
if (colorInterpretation == ColorInterpretation.UNDEFINED || bandNames.contains(bandName)) {
bandName = "Band" + (i + 1);
}
bands[i] = new GridSampleDimension(bandName, categories, null).geophysics(true);
}
// creating coverage
if (raster2Model != null) {
return coverageFactory.create(
coverageName, image, crs, raster2Model, bands, null, properties);
}
return coverageFactory.create(
coverageName, image, new GeneralEnvelope(originalEnvelope), bands, null, properties);
}