/**
* Creates a {@link SimpleFeatureType} that exposes a coverage as a collections of feature points,
* mapping the centre of each pixel as a point plus all the bands as attributes.
*
* <p>The FID is the long that combines x+y*width.
*
* @param gc2d the {@link GridCoverage2D} to wrap.
* @param geometryClass the class for the geometry.
* @return a {@link SimpleFeatureType} or <code>null</code> in case we are unable to wrap the
* coverage
*/
public static SimpleFeatureType createFeatureType(
final GridCoverage2D gc2d, final Class<? extends Geometry> geometryClass) {
// checks
Utilities.ensureNonNull("gc2d", gc2d);
// building a feature type for this coverage
final SimpleFeatureTypeBuilder ftBuilder = new SimpleFeatureTypeBuilder();
ftBuilder.setName(gc2d.getName().toString());
ftBuilder.setNamespaceURI("http://www.geotools.org/");
// CRS
ftBuilder.setCRS(gc2d.getCoordinateReferenceSystem2D());
// ftBuilder.setCRS(DefaultEngineeringCRS.GENERIC_2D);
// TYPE is as follows the_geom | band
ftBuilder.setDefaultGeometry("the_geom");
ftBuilder.add("the_geom", geometryClass);
if (!geometryClass.equals(Point.class)) {
ftBuilder.add("value", Double.class);
} else {
// get sample type on bands
final GridSampleDimension[] sampleDimensions = gc2d.getSampleDimensions();
for (GridSampleDimension sd : sampleDimensions) {
final SampleDimensionType sdType = sd.getSampleDimensionType();
final int dataBuffType = TypeMap.getDataBufferType(sdType);
// TODO I think this should be a public utility inside the FeatureUtilities class
@SuppressWarnings("rawtypes")
final Class bandClass;
switch (dataBuffType) {
case DataBuffer.TYPE_BYTE:
bandClass = Byte.class;
break;
case DataBuffer.TYPE_DOUBLE:
bandClass = Double.class;
break;
case DataBuffer.TYPE_FLOAT:
bandClass = Float.class;
break;
case DataBuffer.TYPE_INT:
bandClass = Integer.class;
break;
case DataBuffer.TYPE_SHORT:
case DataBuffer.TYPE_USHORT:
bandClass = Short.class;
break;
case DataBuffer.TYPE_UNDEFINED:
default:
return null;
}
ftBuilder.add(sd.getDescription().toString(), bandClass);
}
}
return ftBuilder.buildFeatureType();
}
/**
* Wraps a grid coverage into a Feature. Code lifted from ArcGridDataSource (temporary).
*
* @param coverage the grid coverage.
* @return a feature with the grid coverage envelope as the geometry and the grid coverage itself
* in the "grid" attribute.
*/
@SuppressWarnings("unchecked")
public static SimpleFeatureCollection wrapGridCoverage(final GridCoverage2D coverage)
throws TransformException, SchemaException {
final Polygon bounds = getPolygon(coverage.getEnvelope2D());
final CoordinateReferenceSystem sourceCRS = coverage.getCoordinateReferenceSystem2D();
SimpleFeatureTypeBuilder ftb = new SimpleFeatureTypeBuilder(getTypeFactory());
ftb.setName("GridCoverage");
ftb.add("geom", Polygon.class, sourceCRS);
ftb.add("grid", GridCoverage.class);
SimpleFeatureType schema = ftb.buildFeatureType();
// create the feature
SimpleFeatureBuilder fb = new SimpleFeatureBuilder(schema, getFeatureFactory());
fb.add(bounds);
fb.add(coverage);
SimpleFeature feature = fb.buildFeature(null);
final DefaultFeatureCollection collection = new DefaultFeatureCollection();
collection.add(feature);
return collection;
}
/**
* Applies a crop operation to a coverage.
*
* @see
* org.geotools.coverage.processing.AbstractOperation#doOperation(org.opengis.parameter.ParameterValueGroup,
* org.geotools.factory.Hints)
*/
@SuppressWarnings("unchecked")
public Coverage doOperation(ParameterValueGroup parameters, Hints hints) {
final Geometry cropRoi; // extracted from parameters
GeneralEnvelope cropEnvelope = null; // extracted from parameters
final GridCoverage2D source; // extracted from parameters
final double roiTolerance = parameters.parameter(Crop.PARAMNAME_ROITOLERANCE).doubleValue();
final boolean forceMosaic = parameters.parameter(Crop.PARAMNAME_FORCEMOSAIC).booleanValue();
// /////////////////////////////////////////////////////////////////////
//
// Assigning and checking input parameters
//
// ///////////////////////////////////////////////////////////////////
// source coverage
final ParameterValue sourceParameter = parameters.parameter("Source");
if (sourceParameter == null || !(sourceParameter.getValue() instanceof GridCoverage2D)) {
throw new CannotCropException(
Errors.format(ErrorKeys.NULL_PARAMETER_$2, "Source", GridCoverage2D.class.toString()));
}
source = (GridCoverage2D) sourceParameter.getValue();
// Check Envelope and ROI existence - we need at least one of them
final ParameterValue envelopeParameter = parameters.parameter(PARAMNAME_ENVELOPE);
final ParameterValue roiParameter = parameters.parameter(PARAMNAME_ROI);
if ((envelopeParameter == null || envelopeParameter.getValue() == null)
&& (roiParameter == null || roiParameter.getValue() == null))
throw new CannotCropException(
Errors.format(
ErrorKeys.NULL_PARAMETER_$2, PARAMNAME_ENVELOPE, GeneralEnvelope.class.toString()));
Object envelope = envelopeParameter.getValue();
if (envelope != null) {
if (envelope instanceof GeneralEnvelope) {
cropEnvelope = (GeneralEnvelope) envelope;
} else if (envelope instanceof Envelope) {
cropEnvelope = new GeneralEnvelope((Envelope) envelope);
}
}
// may be null
// Check crop ROI
try {
cropRoi =
IntersectUtils.unrollGeometries(
(Geometry) roiParameter.getValue()); // may throw if format not correct
} catch (IllegalArgumentException ex) {
throw new CannotCropException(
Errors.format(ErrorKeys.ILLEGAL_ARGUMENT_$2, PARAMNAME_ROI, ex.getMessage()), ex);
}
// Setting a GeneralEnvelope from ROI if needed
if (cropRoi != null && cropEnvelope == null) {
Envelope e2d =
JTS.getEnvelope2D(cropRoi.getEnvelopeInternal(), source.getCoordinateReferenceSystem());
cropEnvelope = new GeneralEnvelope(e2d);
}
// /////////////////////////////////////////////////////////////////////
//
// Initialization
//
// We take the crop envelope and the source envelope then we check their
// crs and we also check if they ever overlap.
//
// /////////////////////////////////////////////////////////////////////
// envelope of the source coverage
final Envelope2D sourceEnvelope = source.getEnvelope2D();
// crop envelope
Envelope2D destinationEnvelope = new Envelope2D(cropEnvelope);
CoordinateReferenceSystem sourceCRS = sourceEnvelope.getCoordinateReferenceSystem();
CoordinateReferenceSystem destinationCRS = destinationEnvelope.getCoordinateReferenceSystem();
if (destinationCRS == null) {
// Do not change the user provided object - clone it first.
final Envelope2D ge = new Envelope2D(destinationEnvelope);
destinationCRS = source.getCoordinateReferenceSystem2D();
ge.setCoordinateReferenceSystem(destinationCRS);
destinationEnvelope = ge;
}
// //
//
// Source and destination crs must be equals
//
// //
if (!CRS.equalsIgnoreMetadata(sourceCRS, destinationCRS)) {
throw new CannotCropException(
Errors.format(
ErrorKeys.MISMATCHED_ENVELOPE_CRS_$2,
sourceCRS.getName().getCode(),
destinationCRS.getName().getCode()));
}
if (cropRoi != null) {
// TODO: check ROI SRID
}
// //
//
// Check the intersection and, if needed, do the crop operation.
//
// //
final GeneralEnvelope intersectionEnvelope =
new GeneralEnvelope((Envelope) destinationEnvelope);
intersectionEnvelope.setCoordinateReferenceSystem(source.getCoordinateReferenceSystem());
// intersect the envelopes
intersectionEnvelope.intersect(sourceEnvelope);
if (intersectionEnvelope.isEmpty())
throw new CannotCropException(Errors.format(ErrorKeys.CANT_CROP));
// intersect the ROI with the intersection envelope and throw an error if they do not intersect
if (cropRoi != null) {
final Geometry jis =
JTS.toGeometry(
(com.vividsolutions.jts.geom.Envelope) new ReferencedEnvelope(intersectionEnvelope));
if (!IntersectUtils.intersects(cropRoi, jis))
throw new CannotCropException(Errors.format(ErrorKeys.CANT_CROP));
}
// //
//
// Get the grid-to-world transform by keeping into account translation
// of grid geometry constructor for respecting OGC PIXEL-IS-CENTER
// ImageDatum assumption.
//
// //
final AffineTransform sourceCornerGridToWorld =
(AffineTransform)
((GridGeometry2D) source.getGridGeometry()).getGridToCRS(PixelInCell.CELL_CORNER);
// //
//
// I set the tolerance as half the scale factor of the grid-to-world
// transform. This should more or less means in most cases "don't bother
// to crop if the new envelope is as close to the old one that we go
// deep under pixel size."
//
// //
final double tolerance = XAffineTransform.getScale(sourceCornerGridToWorld);
if (cropRoi != null || !intersectionEnvelope.equals(sourceEnvelope, tolerance / 2.0, false)) {
cropEnvelope = intersectionEnvelope.clone();
return buildResult(
cropEnvelope,
cropRoi,
roiTolerance,
forceMosaic,
(hints instanceof Hints) ? (Hints) hints : new Hints(hints),
source,
sourceCornerGridToWorld);
} else {
// //
//
// Note that in case we don't crop at all, WE DO NOT UPDATE the
// envelope. If we did we might end up doing multiple successive
// crop without actually cropping the image but, still, we would
// shrink the envelope each time. Just think about having a loop
// that crops recursively the same coverage specifying each time an
// envelope whose URC is only a a scale quarter close to the LLC of
// the old one. We would never crop the raster but we would modify
// the grid-to-world transform each time.
//
// //
return source;
}
}
@Override
public void encode(Object o) throws IllegalArgumentException {
// register namespaces provided by extended capabilities
NamespaceSupport namespaces = getNamespaceSupport();
namespaces.declarePrefix("wcscrs", "http://www.opengis.net/wcs/service-extension/crs/1.0");
namespaces.declarePrefix(
"int", "http://www.opengis.net/WCS_service-extension_interpolation/1.0");
namespaces.declarePrefix("gml", "http://www.opengis.net/gml/3.2");
namespaces.declarePrefix("gmlcov", "http://www.opengis.net/gmlcov/1.0");
namespaces.declarePrefix("swe", "http://www.opengis.net/swe/2.0");
namespaces.declarePrefix("xlink", "http://www.w3.org/1999/xlink");
namespaces.declarePrefix("xsi", "http://www.w3.org/2001/XMLSchema-instance");
for (WCS20CoverageMetadataProvider cp : extensions) {
cp.registerNamespaces(namespaces);
}
// is this a GridCoverage?
if (!(o instanceof GridCoverage2D)) {
throw new IllegalArgumentException(
"Provided object is not a GridCoverage2D:"
+ (o != null ? o.getClass().toString() : "null"));
}
final GridCoverage2D gc2d = (GridCoverage2D) o;
// we are going to use this name as an ID
final String gcName = gc2d.getName().toString(Locale.getDefault());
// get the crs and look for an EPSG code
final CoordinateReferenceSystem crs = gc2d.getCoordinateReferenceSystem2D();
List<String> axesNames =
GMLTransformer.this.envelopeDimensionsMapper.getAxesNames(gc2d.getEnvelope2D(), true);
// lookup EPSG code
Integer EPSGCode = null;
try {
EPSGCode = CRS.lookupEpsgCode(crs, false);
} catch (FactoryException e) {
throw new IllegalStateException("Unable to lookup epsg code for this CRS:" + crs, e);
}
if (EPSGCode == null) {
throw new IllegalStateException("Unable to lookup epsg code for this CRS:" + crs);
}
final String srsName = GetCoverage.SRS_STARTER + EPSGCode;
// handle axes swap for geographic crs
final boolean axisSwap = CRS.getAxisOrder(crs).equals(AxisOrder.EAST_NORTH);
final AttributesImpl attributes = new AttributesImpl();
helper.registerNamespaces(getNamespaceSupport(), attributes);
// using Name as the ID
attributes.addAttribute(
"", "gml:id", "gml:id", "", gc2d.getName().toString(Locale.getDefault()));
start("gml:RectifiedGridCoverage", attributes);
// handle domain
final StringBuilder builder = new StringBuilder();
for (String axisName : axesNames) {
builder.append(axisName).append(" ");
}
String axesLabel = builder.substring(0, builder.length() - 1);
try {
GeneralEnvelope envelope = new GeneralEnvelope(gc2d.getEnvelope());
handleBoundedBy(envelope, axisSwap, srsName, axesLabel, null);
} catch (IOException ex) {
throw new WCS20Exception(ex);
}
// handle domain
builder.setLength(0);
axesNames =
GMLTransformer.this.envelopeDimensionsMapper.getAxesNames(gc2d.getEnvelope2D(), false);
for (String axisName : axesNames) {
builder.append(axisName).append(" ");
}
axesLabel = builder.substring(0, builder.length() - 1);
handleDomainSet(gc2d.getGridGeometry(), gc2d.getDimension(), gcName, srsName, axisSwap);
// handle rangetype
handleRangeType(gc2d);
// handle coverage function
final GridEnvelope2D ge2D = gc2d.getGridGeometry().getGridRange2D();
handleCoverageFunction(ge2D, axisSwap);
// handle range
handleRange(gc2d);
// handle metadata OPTIONAL
try {
handleMetadata(null, null);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
end("gml:RectifiedGridCoverage");
}