Application: gvSIG desktop

package com.iver.ai2.gvsig3d.cacheservices;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

import org.cresques.cts.ProjectionPool;

import org.cresques.io.GeoRasterFile;

import org.cresques.px.Extent;

import org.gvsig.cacheservice.CacheServiceException;

import org.gvsig.cacheservice.RasterCacheService;

import org.gvsig.cacheservice.TileNum;

public class CMSFileRasterService extends RasterCacheService {

	private GeoRasterFile _rasterFile;

	private boolean _loadFailed = true;

	private Extent _extent;

	public CMSFileRasterService(String planet, String name) {

		super(planet, name);

		// TODO Auto-generated constructor stub

		if(GeoRasterFile.fileIsSupported(name)) {

//			System.out.println("CMTexture2D: loadFile: "+name);

			/// loading Raster File with CMS

			//_rasterFile = GeoRasterFile.openFile(ProjectionPool.get("EPSG:23030"),name);

			if(_rasterFile != null) {

				_rasterFile.setBand(GeoRasterFile.RED_BAND, 0);

				_rasterFile.setBand(GeoRasterFile.GREEN_BAND, 1);

				_rasterFile.setBand(GeoRasterFile.BLUE_BAND, 2);

				_extent = _rasterFile.getExtent();

				setFullExtent(_extent.toRectangle2D());

				//setBounds( _extent.toRectangle2D());

				_loadFailed = false;

			}

		}

	}

	private Extent checkExtent(Extent sz) {

	    double vx = sz.minX();

	    double vy = sz.minY();

	    double vx2 = sz.maxX();

	    double vy2 = sz.maxY();

	    if (sz.minX() < _extent.minX()) {

	        vx = _extent.minX();

	    }

	    if (sz.minY() < _extent.minY()) {

	        vy = _extent.minY();

	    }

	    if (sz.maxX() > _extent.maxX()) {

	        vx2 = _extent.maxX();

	    }

	    if (sz.maxY() > _extent.maxY()) {

	        vy2 = _extent.maxY();

	    }

	    return new Extent(vx, vy, vx2, vy2);

	}

	private Image getTileFromCMSFile(String fName)

	{

		BufferedImage awtImage = null;

		_rasterFile.setView(checkExtent(new Extent(getBounds())));

		awtImage = (BufferedImage)_rasterFile.updateImage(256,256,null);

		try {

			ImageIO.write(awtImage, getFileExtension().substring(0),

				new File(fName));

		} catch (IOException e1) {

			// TODO Auto-generated catch block

			e1.printStackTrace();

			return null;

		}

		return awtImage;

	}

	public String getTileAsFName(TileNum t) throws CacheServiceException {

		if(_loadFailed) { throw new CacheServiceException(new Exception()); }

		String tileId = t.numToOpTileId();

		String fName = getTileFileName(t);

//		System.out.println("CMTexture2D: requestTexture: "+tileId);

		if (!new File(fName).exists()) {

			if(getTileFromCMSFile(fName)==null) return null;

		}

		return fName;

	}

	public Image getTileAsImage(TileNum tileNum) throws CacheServiceException {

		if(_loadFailed) { throw new CacheServiceException(new Exception()); }

		String tileId = tileNum.numToOpTileId();

		String fName = getTileFileName(tileNum);

		System.out.println("CMTexture2D: requestTexture: "+tileId);

		return getTileFromCMSFile(fName);

	}

}