public void testCropLeHavre() throws Exception {
String src = externalData + "geotif/littlelehavre.tif";
GeoRaster geoRaster = GeoRasterFactory.createGeoRaster(src);
geoRaster.open();
RasterMetadata metadata = geoRaster.getMetadata();
Crop crop =
new Crop(
new Rectangle2D.Double(metadata.getXulcorner(), metadata.getYulcorner(), 10, -110));
// Just test it doesn't throw any exception
geoRaster.doOperation(crop);
assertTrue(true);
}
public void testCropAll() throws Exception {
final Envelope rasterEnvelope = geoRasterSrc.getMetadata().getEnvelope();
final Rectangle2D cropRectangle =
new Rectangle2D.Double(
rasterEnvelope.getMinX(),
rasterEnvelope.getMinY(),
rasterEnvelope.getWidth(),
rasterEnvelope.getHeight());
geoRasterDst = geoRasterSrc.doOperation(new Crop(cropRectangle));
assertTrue(geoRasterDst.getWidth() > 0);
assertTrue(geoRasterDst.getHeight() > 0);
RasterMetadata dstMetadata = geoRasterDst.getMetadata();
RasterMetadata srcMetadata = geoRasterSrc.getMetadata();
assertTrue(dstMetadata.equals(srcMetadata));
}
public void testCropRectangle() throws Exception {
final Envelope rasterEnvelope = geoRasterSrc.getMetadata().getEnvelope();
geoRasterSrc.save(tmpData + "1.tif");
final int buffer = (int) (rasterEnvelope.getWidth() / 2.3);
final Rectangle2D cropRectangle =
new Rectangle2D.Double(
rasterEnvelope.getMinX() + buffer,
rasterEnvelope.getMinY() + buffer,
rasterEnvelope.getWidth() - 2 * buffer,
rasterEnvelope.getHeight() - 2 * buffer);
geoRasterDst = geoRasterSrc.doOperation(new Crop(cropRectangle));
geoRasterDst.save(tmpData + "2.tif");
assertTrue(geoRasterDst.getWidth() > 0);
assertTrue(geoRasterDst.getHeight() > 0);
final ImagePlus srcImagePlus = geoRasterSrc.getImagePlus();
final ImagePlus dstImagePlus = geoRasterDst.getImagePlus();
RasterMetadata dstMetadata = geoRasterDst.getMetadata();
RasterMetadata srcMetadata = geoRasterSrc.getMetadata();
assertTrue(dstMetadata.getEnvelope().getMinX() < cropRectangle.getMinX());
assertTrue(dstMetadata.getEnvelope().getMinY() < cropRectangle.getMinY());
assertTrue(dstMetadata.getEnvelope().getMaxX() > cropRectangle.getMaxX());
assertTrue(dstMetadata.getEnvelope().getMaxY() > cropRectangle.getMaxY());
assertTrue(dstMetadata.getEnvelope().getWidth() < srcMetadata.getEnvelope().getWidth());
checkCrop(geoRasterDst.getMetadata().getEnvelope(), srcImagePlus, dstImagePlus);
}
@Test
public void testGrid2Grid() throws Exception {
GeoRaster gr = GeoRasterFactory.createGeoRaster(otherData + "sample.asc");
gr.open();
final RasterMetadata originalMetadata = gr.getMetadata();
final float[] pixels = gr.getFloatPixels();
final File file2 = new File(tmpData + "1.asc");
gr.save(file2.getAbsolutePath());
gr = GeoRasterFactory.createGeoRaster(file2.getAbsolutePath());
gr.open();
final float[] gridPixels = gr.getFloatPixels();
assertTrue(gridPixels.length == pixels.length);
equals(pixels, gridPixels);
final RasterMetadata newM = gr.getMetadata();
assertTrue(newM.getEnvelope().equals(originalMetadata.getEnvelope()));
assertTrue(newM.getNCols() == originalMetadata.getNCols());
assertTrue(newM.getNRows() == originalMetadata.getNRows());
assertTrue(newM.getPixelSize_X() == originalMetadata.getPixelSize_X());
assertTrue(newM.getPixelSize_Y() == originalMetadata.getPixelSize_Y());
assertTrue(newM.getRotation_X() == originalMetadata.getRotation_X());
assertTrue(newM.getRotation_Y() == originalMetadata.getRotation_Y());
assertTrue(newM.getXulcorner() == originalMetadata.getXulcorner());
assertTrue(newM.getYulcorner() == originalMetadata.getYulcorner());
}
private void checkCrop(
final Envelope envelope, final ImagePlus srcPixelProvider, final ImagePlus dstPixelProvider)
throws IOException {
// check metadata
final RasterMetadata dstMetadata = geoRasterDst.getMetadata();
final float pixelSize_X = dstMetadata.getPixelSize_X();
final float pixelSize_Y = dstMetadata.getPixelSize_Y();
final float halfPixelSize_X = dstMetadata.getPixelSize_X() / 2;
final float halfPixelSize_Y = Math.abs(dstMetadata.getPixelSize_Y()) / 2;
final int ncols = dstMetadata.getNCols();
final int nrows = dstMetadata.getNRows();
final double xulcorner = dstMetadata.getXulcorner();
final double yulcorner = dstMetadata.getYulcorner();
assertTrue(pixelSize_X == geoRasterDst.getMetadata().getPixelSize_X());
assertTrue(ncols * pixelSize_X == dstMetadata.getEnvelope().getWidth());
assertTrue(
xulcorner - (pixelSize_X / 2) + ncols * pixelSize_X == dstMetadata.getEnvelope().getMaxX());
assertTrue(pixelSize_Y == geoRasterDst.getMetadata().getPixelSize_Y());
assertTrue(nrows * Math.abs(pixelSize_Y) == dstMetadata.getEnvelope().getHeight());
assertTrue(
yulcorner - (pixelSize_Y / 2) - nrows * Math.abs(pixelSize_Y)
== dstMetadata.getEnvelope().getMinY());
// check raster values
for (double y = envelope.getMinY() + halfPixelSize_Y; y < envelope.getMaxY(); y = y + 1) {
for (double x = envelope.getMinX() + halfPixelSize_X; x < envelope.getMaxX(); x = x + 1) {
final Point2D srcPixel = geoRasterSrc.fromRealWorldToPixel(x, y);
final Point2D dstPixel = geoRasterDst.fromRealWorldToPixel(x, y);
final float srcPixelValue =
srcPixelProvider
.getProcessor()
.getPixelValue((int) srcPixel.getX(), (int) srcPixel.getY());
final float dstPixelValue =
dstPixelProvider
.getProcessor()
.getPixelValue((int) dstPixel.getX(), (int) dstPixel.getY());
if (Float.isNaN(srcPixelValue)) {
assertTrue(Float.isNaN(dstPixelValue));
} else {
assertTrue("pixel[" + x + ", " + y + "]", srcPixelValue == dstPixelValue);
}
}
}
}