/**
* Crops the image representing a full tile set to the required dimension and returns it, but
* keeps minx and miny being zero.
*
* @param fullTilesRaster
* @param tiledImageGridRange
* @param cropTo
* @return
*/
private RenderedImage cropToRequiredDimension(
final RenderedImage fullTilesRaster, final GridEnvelope cropTo) {
GridEnvelope2D crop =
new GridEnvelope2D(
cropTo.getLow(0), cropTo.getLow(1), cropTo.getSpan(0), cropTo.getSpan(1));
GridEnvelope2D origDim =
new GridEnvelope2D(
fullTilesRaster.getMinX(),
fullTilesRaster.getMinY(),
fullTilesRaster.getWidth(),
fullTilesRaster.getHeight());
if (!origDim.contains(crop)) {
throw new IllegalArgumentException(
"Original image (" + origDim + ") does not contain desired dimension (" + crop + ")");
} else if (origDim.equals(crop)) {
if (LOGGER.isLoggable(Level.FINER)) {
LOGGER.finer(
"No need to crop image, full tiled dimension and target one "
+ "do match: original: "
+ fullTilesRaster.getWidth()
+ "x"
+ fullTilesRaster.getHeight()
+ ", target: "
+ crop.getSpan(0)
+ "x"
+ crop.getSpan(1));
}
return fullTilesRaster;
}
ParameterBlock cropParams = new ParameterBlock();
cropParams.addSource(fullTilesRaster); // Source
// cropParams.add(Float.valueOf(cropTo.x - tiledImageGridRange.x)); // x origin for each
// band
// cropParams.add(Float.valueOf(cropTo.y - tiledImageGridRange.y)); // y origin for each
// band
cropParams.add(Float.valueOf(crop.getLow(0))); // x origin for each band
cropParams.add(Float.valueOf(crop.getLow(1))); // y origin for each band
cropParams.add(Float.valueOf(crop.getSpan(0))); // width for each band
cropParams.add(Float.valueOf(crop.getSpan(1))); // height for each band
final RenderingHints hints =
new RenderingHints(JAI.KEY_OPERATION_BOUND, OpImage.OP_NETWORK_BOUND);
RenderedImage image = JAI.create("Crop", cropParams, hints);
// assert cropTo.x - tiledImageGridRange.x == image.getMinX();
// assert cropTo.y - tiledImageGridRange.y == image.getMinY();
assert crop.getLow(0) == image.getMinX();
assert crop.getLow(1) == image.getMinY();
assert crop.getSpan(0) == image.getWidth();
assert crop.getSpan(1) == image.getHeight();
// assert cropTo.x == image.getMinX();
// assert cropTo.y == image.getMinY();
// assert cropTo.width == image.getWidth();
// assert cropTo.height == image.getHeight();
return image;
}
public static JGrassRegion getJGrassRegionFromGridCoverage(GridCoverage2D gridCoverage2D)
throws InvalidGridGeometryException, TransformException {
Envelope2D env = gridCoverage2D.getEnvelope2D();
GridEnvelope2D worldToGrid = gridCoverage2D.getGridGeometry().worldToGrid(env);
double xRes = env.getWidth() / worldToGrid.getWidth();
double yRes = env.getHeight() / worldToGrid.getHeight();
JGrassRegion region =
new JGrassRegion(env.getMinX(), env.getMaxX(), env.getMinY(), env.getMaxY(), xRes, yRes);
return region;
}