root / branches / Mobile_Compatible_Hito_1 / libFMap / src / es / prodevelop / gvsig / mobile / fmap / driver / raster / google / GoogleMapsTile.java @ 21606
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package es.prodevelop.gvsig.mobile.fmap.driver.raster.google; |
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import java.awt.geom.Rectangle2D; |
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import java.net.MalformedURLException; |
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import java.net.URL; |
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import java.util.Random; |
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import org.apache.log4j.Logger; |
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public class GoogleMapsTile implements Cloneable { |
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private static Logger logger = Logger.getLogger(GoogleMapsTile.class); |
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private Rectangle2D extent; |
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private int[] ppath; |
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private Random rnd; |
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public int[] getPath() { |
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return ppath;
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} |
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public GoogleMapsTile() {
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extent = new Rectangle2D.Double( |
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- GoogleUtils.SEMI_EQUATOR_LENGTH, |
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- GoogleUtils.SEMI_EQUATOR_LENGTH, |
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2 * GoogleUtils.SEMI_EQUATOR_LENGTH,
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2 * GoogleUtils.SEMI_EQUATOR_LENGTH);
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ppath = new int[1]; |
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ppath[0] = 0; |
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rnd = new Random(System.currentTimeMillis()); |
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} |
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public URL getURL() { |
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String u = "http://kh" + rnd.nextInt(4) + ".google.com/kh?n=404&v=23&t="; |
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for (int i=0; i<ppath.length; i++) u = u + letter(ppath[i]); |
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URL resp = null; |
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try {
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resp = new URL(u); |
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} catch (MalformedURLException e) { |
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logger.error("Bad url: " + u);
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} |
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return resp;
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} |
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private String letter(int i) { |
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if (i == 0) return "t"; |
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if (i == 1) return "s"; |
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if (i == 2) return "r"; |
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if (i == 3) return "q"; |
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return ""; |
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} |
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public void goToQ(int q) { |
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if ((q < 0) || (q > 3)) return; |
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int[] aux = new int[ppath.length + 1]; |
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for (int i=0; i<ppath.length; i++) aux[i] = ppath[i]; |
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aux[ppath.length] = q; |
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ppath = new int[aux.length]; |
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for (int i=0; i<aux.length; i++) ppath[i] = aux[i]; |
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double new_x = extent.getMinX();
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double new_y = extent.getMinY();
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double new_w = 0.5 * extent.getWidth(); |
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if (q == 1) { new_x = extent.getCenterX(); } |
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if (q == 2) { new_x = extent.getCenterX(); new_y = extent.getCenterY(); } |
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if (q == 3) { new_y = extent.getCenterY(); } |
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extent = new Rectangle2D.Double(new_x, new_y, new_w, new_w); |
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} |
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public GoogleMapsTile(int[] _path) { |
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extent = new Rectangle2D.Double( |
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- GoogleUtils.SEMI_EQUATOR_LENGTH, |
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- GoogleUtils.SEMI_EQUATOR_LENGTH, |
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2 * GoogleUtils.SEMI_EQUATOR_LENGTH,
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2 * GoogleUtils.SEMI_EQUATOR_LENGTH);
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ppath = new int[_path.length]; |
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for (int i=0; i<_path.length; i++) { |
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int q = _path[i];
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if ((q < 0) || (q > 3)) break; |
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ppath[i] = q; |
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if (i == 0) continue; |
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double new_x = extent.getMinX();
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double new_y = extent.getMinY();
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double new_w = 0.5 * extent.getWidth(); |
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if (q == 1) { new_x = extent.getCenterX(); } |
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if (q == 2) { new_x = extent.getCenterX(); new_y = extent.getCenterY(); } |
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if (q == 3) { new_y = extent.getCenterY(); } |
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extent = new Rectangle2D.Double(new_x, new_y, new_w, new_w); |
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} |
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rnd = new Random(System.currentTimeMillis()); |
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} |
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public Rectangle2D getExtent() { |
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return extent;
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} |
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// ------------- movements
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public Object clone() { |
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return new GoogleMapsTile(ppath); |
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} |
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public GoogleMapsTile getParent() {
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if (ppath.length == 1) return this; |
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int[] new_path = new int[ppath.length - 1]; |
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for (int i=0; i<(ppath.length - 1); i++) new_path[i] = ppath[i]; |
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return new GoogleMapsTile(new_path); |
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} |
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public GoogleMapsTile getTileToTheRight() {
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if (ppath.length == 1) return this; |
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int lastq = ppath[ppath.length - 1]; |
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if (lastq == 0) { |
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GoogleMapsTile parent = getParent(); |
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parent.goToQ(1);
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return parent;
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} |
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if (lastq == 3) { |
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GoogleMapsTile parent = getParent(); |
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parent.goToQ(2);
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return parent;
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} |
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if (lastq == 1) { |
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GoogleMapsTile parent = getParent(); |
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GoogleMapsTile parent_right = parent.getTileToTheRight(); |
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parent_right.goToQ(0);
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return parent_right;
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} |
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if (lastq == 2) { |
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GoogleMapsTile parent = getParent(); |
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GoogleMapsTile parent_right = parent.getTileToTheRight(); |
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parent_right.goToQ(3);
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return parent_right;
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} |
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logger.error("Bad path item: " + lastq);
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return this; |
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} |
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public GoogleMapsTile getTileUnder() {
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if (ppath.length == 1) return this; |
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int lastq = ppath[ppath.length - 1]; |
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if (lastq == 2) { |
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GoogleMapsTile parent = getParent(); |
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parent.goToQ(1);
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return parent;
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} |
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if (lastq == 3) { |
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GoogleMapsTile parent = getParent(); |
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parent.goToQ(0);
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return parent;
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} |
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if (lastq == 0) { |
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GoogleMapsTile parent = getParent(); |
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GoogleMapsTile parent_under = parent.getTileUnder(); |
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parent_under.goToQ(3);
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return parent_under;
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} |
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if (lastq == 1) { |
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GoogleMapsTile parent = getParent(); |
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GoogleMapsTile parent_under = parent.getTileUnder(); |
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parent_under.goToQ(2);
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return parent_under;
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} |
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logger.error("Bad path item: " + lastq);
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return this; |
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} |
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} |