/* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2010, Refractions Research Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*/
package org.locationtech.udig.catalog.internal.wmt.wmtsource;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.locationtech.udig.catalog.internal.wmt.Trace;
import org.locationtech.udig.catalog.internal.wmt.WMTPlugin;
import org.locationtech.udig.catalog.internal.wmt.tile.NASATile;
import org.locationtech.udig.catalog.internal.wmt.tile.NASATile.NASATileName.NASAZoomLevel;
import org.locationtech.udig.catalog.internal.wmt.tile.WMTTile.WMTTileFactory;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.referencing.crs.DefaultGeographicCRS;
import org.jdom.Element;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
/**
* This class represents one TiledGroup
* see http://onearth.jpl.nasa.gov/wms.cgi?request=GetTileService
* and http://onearth.jpl.nasa.gov/tiled.html
*
* @author to.srwn
* @since 1.1.0
*/
public class NASASource extends WMTSource {
public static String NAME = "NASA"; //$NON-NLS-1$
private static WMTTileFactory tileFactory = new NASATile.NASATileFactory();
private ReferencedEnvelope bounds;
/* The prefix for the request: http://wms.jpl.nasa.gov/wms.cgi? */
private String baseUrl;
private List<NASAZoomLevel> zoomLevels;
private double[] scales;
private int tileWidth;
private int tileHeight;
private String tileFormat;
private static final String tileWidthPatternString = "(width=)(\\d*)(&)"; //$NON-NLS-1$
private static final String tileHeightPatternString = "(height=)(\\d*)(&)"; //$NON-NLS-1$
private static final String tileFormatPatternString = "(format=image/)([a-zA-Z]+)(&)"; //$NON-NLS-1$
private static final Pattern tileWidthPattern = Pattern.compile(
tileWidthPatternString, Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
private static final Pattern tileHeightPattern = Pattern.compile(
tileHeightPatternString, Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
private static final Pattern tileFormatPattern = Pattern.compile(
tileFormatPatternString, Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
protected NASASource() {}
/**
* This method parses all needed information: bounds, zoom-levels,
* tile-size and tile-format.
*/
@Override
protected void init(String resourceId) throws Exception {
NASASourceManager sourceManager = NASASourceManager.getInstance();
Element tiledGroup = sourceManager.getTiledGroup(resourceId);
this.baseUrl = sourceManager.getBaseUrl();
setName(tiledGroup.getChildText("Name")); //$NON-NLS-1$
setBounds(tiledGroup.getChild("LatLonBoundingBox")); //$NON-NLS-1$
String firstTilePattern = tiledGroup.getChild("TilePattern").getValue(); //$NON-NLS-1$
setTileSize(firstTilePattern);
setTileFormat(firstTilePattern);
WMTPlugin.debug("[NASASource] " + getName() + " " + getBounds(), Trace.NASA); //$NON-NLS-1$ //$NON-NLS-2$
setZoomLevels(tiledGroup.getChildren("TilePattern"), baseUrl); //$NON-NLS-1$
}
//region Scales/Zoom-Levels
/**
* Retrieves zoom-levels from the TilePatterns of a TiledGroup
*
* @param tilePatterns
* @param baseUrl
*/
private void setZoomLevels(List<?> tilePatterns, String baseUrl) {
zoomLevels = new ArrayList<NASAZoomLevel>();
for(Object element : tilePatterns) {
if (element instanceof Element) {
Element tilePattern = (Element) element;
String tilePatternText = tilePattern.getValue();
NASAZoomLevel zoomLevel = new NASAZoomLevel(tilePatternText, this);
WMTPlugin.debug("[NASASource] Zoom-Level: " + zoomLevel.getScale() + //$NON-NLS-1$
" " + zoomLevel.getWidthInWorldUnits(), Trace.NASA); //$NON-NLS-1$
zoomLevels.add(zoomLevel);
}
}
generateScaleList();
}
/**
* Generates the scale-list from the given zoom-level-list.
*/
private void generateScaleList() {
// first: sort the zoom-level list, so that low scales (high numbers)
// are at top of the list
Collections.sort(zoomLevels);
Collections.reverse(zoomLevels);
// generate scale list
scales = new double[zoomLevels.size()];
for (int i = 0; i < zoomLevels.size(); i++) {
zoomLevels.get(i).setZoomLevel(i);
scales[i] = zoomLevels.get(i).getScale();
}
}
//endregion
//region TiledGroup-bounds
private void setBounds(Element latLonBoundingBox) {
try {
double minX = latLonBoundingBox.getAttribute("minx").getDoubleValue(); //$NON-NLS-1$
double maxX = latLonBoundingBox.getAttribute("maxx").getDoubleValue(); //$NON-NLS-1$
double minY = latLonBoundingBox.getAttribute("miny").getDoubleValue(); //$NON-NLS-1$
double maxY = latLonBoundingBox.getAttribute("maxy").getDoubleValue(); //$NON-NLS-1$
bounds = new ReferencedEnvelope(minX, maxX, minY, maxY, DefaultGeographicCRS.WGS84);
} catch(Exception exc) {
WMTPlugin.log("[NASASource.setBounds] Failed: " + getName(), exc); //$NON-NLS-1$
bounds = new ReferencedEnvelope(-180, 180, -90, 90, DefaultGeographicCRS.WGS84);
}
}
//endregion
//region Tile-Size and Tile-Format
/**
* Gets the tile-size from the first tile-pattern.
*
*
* @param tilePattern
*/
private void setTileSize(String tilePattern) {
Matcher mWidth = tileWidthPattern.matcher(tilePattern);
Matcher mHeight = tileHeightPattern.matcher(tilePattern);
if (mWidth.find() && mHeight.find()) {
String widthText = mWidth.group(2);
String heightText = mHeight.group(2);
try{
int width = Integer.parseInt(widthText);
int height = Integer.parseInt(heightText);
tileWidth = width;
tileHeight = height;
return;
} catch(Exception exc) {
WMTPlugin.log("[NASASource.setTileSize] Failed: " + getName(), exc); //$NON-NLS-1$
}
}
tileWidth = 512;
tileHeight = 512;
}
/**
* Get the image format from the first tile-pattern.
*
* @param tilePattern
*/
private void setTileFormat(String tilePattern) {
Matcher matcher = tileFormatPattern.matcher(tilePattern);
String format = "jpeg"; //$NON-NLS-1$
if (matcher.find()) {
format = matcher.group(2);
} else {
WMTPlugin.log("[NASASource.setTileFormat] Could not get the format: " + getName(), null); //$NON-NLS-1$
}
tileFormat = format;
}
//endregion
@Override
public String getFileFormat() {
return tileFormat;
}
@Override
public double[] getScaleList() {
return scales;
}
public NASAZoomLevel getZoomLevel(int index) {
return zoomLevels.get(index);
}
@Override
public ReferencedEnvelope getBounds() {
return bounds;
}
@Override
public WMTTileFactory getTileFactory() {
return tileFactory;
}
@Override
public int getTileHeight() {
return tileHeight;
}
@Override
public int getTileWidth() {
return tileWidth;
}
public String getBaseUrl(){
return baseUrl;
}
public CoordinateReferenceSystem getProjectedTileCrs() {
return DefaultGeographicCRS.WGS84;
}
}