Application: gvSIG desktop » gvSIG raster

import java.awt.geom.Rectangle2D;

import org.gvsig.fmap.dal.coverage.grid.render.TileListener;

import org.gvsig.raster.impl.datastruct.ExtentImpl;

	/*

	 * (non-Javadoc)

	 * @see org.gvsig.raster.impl.store.QueryableRaster#getWindowRaster(double, double, double, double, int, int, org.gvsig.fmap.dal.coverage.grid.render.TileListener, int)

	 */

	public void getWindowRaster(double ulx, double uly, double lrx, double lry, int bufWidth, int bufHeight, TileListener listener, int frameInPx)

		throws InvalidSetViewException, ProcessInterruptedException, RasterDriverException {

		double[] step = null;

		Buffer buf = null;

		//Esta secci?n es para que no supersamplee el driver y pueda hacerse en el cliente

		if(!currentQuery.isSupersamplingLoadingBuffer()) {

			//nWidth = ((adjustedDataExtent.width() * mDataset.getDataset(0).getWidth()) / mDataset.getExtentForRequest().width());

			//nHeight = ((adjustedDataExtent.height() * mDataset.getDataset(0).getHeight()) / mDataset.getExtentForRequest().height());

			Point2D p1 = worldToRaster(new Point2D.Double(ulx, uly));

			Point2D p2 = worldToRaster(new Point2D.Double(lrx, lry));

			nWidth = Math.abs(p1.getX() - p2.getX());

			nHeight = Math.abs(p1.getY() - p2.getY());

			if(bufWidth > Math.ceil(nWidth) && bufHeight > Math.ceil(nHeight)) {

				step = calcSteps(ulx, uly, lrx, lry, nWidth, nHeight, bufWidth, bufHeight);

				buf = getWindowRaster(ulx, uly, lrx, lry);

			}

		} 

		if(buf == null)

			buf = getWindowRaster(ulx, uly, lrx, lry, bufWidth, bufHeight, true);

		buf.setDataExtent(new Rectangle2D.Double(ulx, uly, Math.abs(ulx - lrx), Math.abs(uly - lry)));

		listener.nextBuffer(buf, new ExtentImpl(ulx, uly, lrx, lry), this.getAffineTransform(), step);

		listener.endReading();

	}