@Test
// @Ignore
public void nearestExternal() throws Exception {
final OverviewsEmbedder oe = new OverviewsEmbedder();
oe.setDownsampleStep(2);
oe.setNumSteps(5);
oe.setScaleAlgorithm(OverviewsEmbedder.SubsampleAlgorithm.Nearest.toString());
// use default
oe.setTileCache(JAI.getDefaultInstance().getTileCache());
oe.setTileWidth(256);
oe.setTileHeight(256);
oe.setExternalOverviews(true);
oe.setSourcePath(TestData.file(this, "DEM_.tiff").getAbsolutePath());
oe.addProcessingEventListener(
new ProcessingEventListener() {
@Override
public void getNotification(ProcessingEvent event) {
LOGGER.info(event.toString());
}
@Override
public void exceptionOccurred(ExceptionEvent event) {
LOGGER.warning(event.toString());
}
});
oe.run();
// now red it back and check that things are coherent
final ImageReader reader = new TIFFImageReaderSpi().createReaderInstance();
reader.setInput(
ImageIO.createImageInputStream(org.geotools.test.TestData.file(this, "DEM_.tiff")));
assertTrue(reader.getNumImages(true) == 1);
reader.reset();
assertTrue(org.geotools.test.TestData.file(this, "DEM_.tif.ovr").exists());
reader.setInput(
ImageIO.createImageInputStream(org.geotools.test.TestData.file(this, "DEM_.tif.ovr")));
assertTrue(reader.getNumImages(true) == 5);
assertTrue(reader.isImageTiled(0));
assertEquals(256, reader.getTileHeight(0));
assertEquals(256, reader.getTileWidth(0));
reader.dispose();
}
@Test
public void nearest() throws Exception {
final OverviewsEmbedder oe = new OverviewsEmbedder();
oe.setDownsampleStep(2);
oe.setNumSteps(5);
oe.setScaleAlgorithm(OverviewsEmbedder.SubsampleAlgorithm.Nearest.toString());
// use default
oe.setTileCache(JAI.getDefaultInstance().getTileCache());
oe.setTileWidth(256);
oe.setTileHeight(256);
oe.setSourcePath(TestData.file(this, "DEM_.tiff").getAbsolutePath());
oe.addProcessingEventListener(
new ProcessingEventListener() {
private double lastProgress = -1;
@Override
public void getNotification(ProcessingEvent event) {
assertTrue(lastProgress <= event.getPercentage());
lastProgress = event.getPercentage();
assertTrue(lastProgress <= 100);
assertTrue(lastProgress >= 0);
LOGGER.info(event.toString());
}
@Override
public void exceptionOccurred(ExceptionEvent event) {
LOGGER.warning(event.toString());
}
});
oe.run();
// now red it back and check that things are coherent
final ImageReader reader = new TIFFImageReaderSpi().createReaderInstance();
reader.setInput(
ImageIO.createImageInputStream(org.geotools.test.TestData.file(this, "DEM_.tiff")));
assertTrue(reader.getNumImages(true) == 6);
reader.dispose();
}
