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);

        }

}