/** @param file */
public void export(File file) {
LOG.debug("Writing index file for directory...");
ObjectOutputStream out = null;
try {
out = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(file)));
out.writeObject(qtree);
out.writeObject(createEnvelope(envelope));
out.writeObject(rasterDataInfo);
out.writeObject(rasterGeoReference.getOriginLocation());
out.writeDouble(rasterGeoReference.getResolutionX());
out.writeDouble(rasterGeoReference.getResolutionY());
out.writeDouble(rasterGeoReference.getRotationX());
out.writeDouble(rasterGeoReference.getRotationY());
out.writeDouble(rasterGeoReference.getOriginEasting());
out.writeDouble(rasterGeoReference.getOriginNorthing());
out.writeObject(rasterGeoReference.getCrs());
out.writeObject(resolutionInfo);
out.writeObject(options);
LOG.debug("Done.");
} catch (IOException e) {
LOG.debug(
"Raster pyramid file '{}' could not be written: '{}'.", file, e.getLocalizedMessage());
LOG.trace("Stack trace:", e);
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {
LOG.debug(
"Raster pyramid file '{}' could not be closed: '{}'.", file, e.getLocalizedMessage());
LOG.trace("Stack trace:", e);
}
}
}
}
/**
* Creates a new empty SimpleRaster with same DataType and InterleaveType. Size is determined by
* the given envelope.
*
* @param rEnv The raster envelope of the new SimpleRaster.
* @param env The boundary of the new SimpleRaster.
* @return A new empty SimpleRaster.
*/
public SimpleRaster createCompatibleSimpleRaster(RasterGeoReference rEnv, Envelope env) {
int[] size = rEnv.getSize(env);
RasterRect rasterRect = new RasterRect(0, 0, size[0], size[1]);
RasterData data = this.getRasterData();
BandType[] bands = data.getDataInfo().bandInfo;
RasterData newRaster = data.createCompatibleWritableRasterData(rasterRect, bands);
return new SimpleRaster(newRaster, env, rEnv, metadata);
}
private WarpPolynomial createWarp(
int dstWidth,
int dstHeight,
ICRS srcCRS,
RasterGeoReference srcREnv,
RasterGeoReference dstREnv)
throws TransformationException {
int k = 0;
// create/calculate reference points
float dx = (dstWidth - 1) / (float) (refPointsGridSize - 1);
float dy = (dstHeight - 1) / (float) (refPointsGridSize - 1);
float[] srcCoords = new float[refPointsGridSize * refPointsGridSize * 2];
float[] dstCoords = new float[refPointsGridSize * refPointsGridSize * 2];
List<Point3d> points = new ArrayList<Point3d>(refPointsGridSize * refPointsGridSize);
for (int j = 0; j < refPointsGridSize; j++) {
for (int i = 0; i < refPointsGridSize; i++) {
dstCoords[k] = i * dx;
dstCoords[k + 1] = j * dy;
double[] dstWCoords =
dstREnv.getWorldCoordinate((int) dstCoords[k], (int) dstCoords[k + 1]);
points.add(new Point3d(dstWCoords[0], dstWCoords[1], Double.NaN));
k += 2;
}
}
List<Point3d> resultList = transformDstToSrc(srcCRS, points);
k = 0;
for (Point3d point : resultList) {
double[] srcRCoords = srcREnv.getRasterCoordinateUnrounded(point.x, point.y);
srcCoords[k] = (float) srcRCoords[0];
srcCoords[k + 1] = (float) srcRCoords[1];
k += 2;
}
// create a best fit polynomial for out grid
WarpPolynomial warp =
WarpPolynomial.createWarp(
srcCoords, 0, dstCoords, 0, srcCoords.length, 1f, 1f, 1f, 1f, polynomialOrder);
return warp;
}
/**
* Creates a transformed raster from a given source raster.
*
* <p>This method transforms the requested envelope and returns a new raster with the requested
* size. The source raster can be larger than the requested envelope (like a large tiled raster),
* or smaller (the source raster nodata value will be used outside the source raster).
*
* <p>If the dstEnvelope does not contain a CRS or the CRS is the same as the {@link
* AbstractRaster#getCoordinateSystem()} only interpolation will be applied. If the requested size
* is the same as the number of rows/columns of the source raster, only the subset of the given
* raster will be returned, without interpolation being applied.
*
* @param sourceRaster the source raster
* @param dstEnvelope the requested envelope (already in the target crs)
* @param dstWidth the requested raster size
* @param dstHeight the requested raster size
* @param interpolationType the type of the interpolation
* @return the transformed raster
* @throws TransformationException
*/
public AbstractRaster transform(
AbstractRaster sourceRaster,
Envelope dstEnvelope,
int dstWidth,
int dstHeight,
InterpolationType interpolationType)
throws TransformationException {
synchronized (sourceRaster) {
ICRS srcCRS = sourceRaster.getCoordinateSystem();
// get the (transformed) subraster which intersects with the given envelope.
AbstractRaster source = getSubRaster(srcCRS, sourceRaster, dstEnvelope);
if (source.getColumns() == dstHeight && source.getRows() == dstWidth) {
// no need to interpolate.
return source;
}
SimpleRaster simpleSourceRaster = source.getAsSimpleRaster();
RasterData srcData = simpleSourceRaster.getReadOnlyRasterData();
RasterGeoReference srcREnv = simpleSourceRaster.getRasterReference();
if (backgroundValue != null) {
srcData.setNoDataValue(backgroundValue);
}
// interpolation is needed.
Interpolation interpolation =
InterpolationFactory.getInterpolation(interpolationType, srcData);
RasterRect rr = new RasterRect(0, 0, dstWidth, dstHeight);
RasterData dstData = srcData.createCompatibleWritableRasterData(rr, null);
RasterGeoReference dstREnv =
RasterGeoReference.create(
sourceRaster.getRasterReference().getOriginLocation(),
dstEnvelope,
dstWidth,
dstHeight);
// use warp to calculate the correct sample positions in the source raster.
// the warp is a cubic polynomial function created of 100 points in the dstEnvelope. This
// function will map
// points from the source crs to the target crs very accurate.
WarpPolynomial warp = createWarp(dstWidth, dstHeight, srcCRS, srcREnv, dstREnv);
warpTransform(warp, interpolation, dstData);
return new SimpleRaster(dstData, dstEnvelope, dstREnv, null);
}
}
/** @param file */
public DiskBasedTileContainer(File file) {
ObjectInputStream in = null;
LOG.debug("Reading index file for directory...");
try {
in = new ObjectInputStream(new BufferedInputStream(new FileInputStream(file)));
qtree = (QTree<File>) in.readObject();
envelope = createEnvelope((float[]) in.readObject(), null);
rasterDataInfo = (RasterDataInfo) in.readObject();
rasterGeoReference =
new RasterGeoReference(
(OriginLocation) in.readObject(),
in.readDouble(),
in.readDouble(),
in.readDouble(),
in.readDouble(),
in.readDouble(),
in.readDouble(),
(CRS) in.readObject());
envelope.setCoordinateSystem(rasterGeoReference.getCrs());
resolutionInfo = (ResolutionInfo) in.readObject();
options = (RasterIOOptions) in.readObject();
initialized = true;
LOG.debug("Done.");
} catch (FileNotFoundException e) {
LOG.debug("Raster pyramid file '{}' could not be found.", file);
LOG.trace("Stack trace:", e);
} catch (IOException e) {
LOG.debug("Raster pyramid file '{}' could not be read: '{}'", file, e.getLocalizedMessage());
LOG.trace("Stack trace:", e);
} catch (ClassNotFoundException e) {
LOG.debug("Raster pyramid file '{}' was in the wrong format.", file);
LOG.trace("Stack trace:", e);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
LOG.debug(
"Raster pyramid file '{}' could not be closed: '{}'.", file, e.getLocalizedMessage());
LOG.trace("Stack trace:", e);
}
}
}
}
/**
* Merge two Raster references. Returns a new RasterReference where the upper-left corner is set
* to the values of the smallest upper and smallest left ordinate. The resolution is set to the
* minimum value (i.e. the highest resolution [unit/pixel]). Some assumptions are made (not
* checked):
*
* <ul>
* <li>The pixel location (center/outer) of the origin are equal, if not, the location of the
* first reference will be used (translated origin of second)
* <li>Crs is identical
* <li>rotation around axis are equal
* </ul>
*
* @param geoRef1
* @param geoRef2
* @return new RasterReference
*/
public static RasterGeoReference merger(RasterGeoReference geoRef1, RasterGeoReference geoRef2) {
if (geoRef1 == null) {
return geoRef2;
}
if (geoRef2 == null) {
return geoRef1;
}
RasterGeoReference geoRef2Copy = geoRef2;
if (geoRef1.location != geoRef2.location) {
double[] orig = geoRef2.getOrigin(geoRef1.location);
geoRef2Copy =
new RasterGeoReference(
geoRef1.location,
geoRef2.getResolutionX(),
geoRef2.getResolutionY(),
geoRef2.getRotationX(),
geoRef2.getRotationY(),
orig[0],
orig[1],
geoRef2.crs);
}
double[] origin1 = geoRef1.getOrigin();
double[] origin2 = geoRef2Copy.getOrigin();
double res1x = geoRef1.getResolutionX();
double res1y = geoRef1.getResolutionY();
double res2x = geoRef2Copy.getResolutionX();
double res2y = geoRef2Copy.getResolutionY();
double nResx = (res1x < 0) ? max(res1x, res2x) : min(res1x, res2x);
double nResy = (res1y < 0) ? max(res1y, res2y) : min(res1y, res2y);
double nOrigx = (res1x < 0) ? max(origin1[0], origin2[0]) : min(origin1[0], origin2[0]);
double nOrigy = (res1y < 0) ? max(origin1[1], origin2[1]) : min(origin1[1], origin2[1]);
return new RasterGeoReference(
geoRef1.location,
nResx,
nResy,
geoRef1.getRotationX(),
geoRef1.getRotationY(),
nOrigx,
nOrigy,
geoRef1.crs);
}