diff options
Diffstat (limited to 'main/src/cgeo/geocaching/connector/gc/Tile.java')
| -rw-r--r-- | main/src/cgeo/geocaching/connector/gc/Tile.java | 52 |
1 files changed, 25 insertions, 27 deletions
diff --git a/main/src/cgeo/geocaching/connector/gc/Tile.java b/main/src/cgeo/geocaching/connector/gc/Tile.java index 18fe65c..ff13fe3 100644 --- a/main/src/cgeo/geocaching/connector/gc/Tile.java +++ b/main/src/cgeo/geocaching/connector/gc/Tile.java @@ -56,11 +56,11 @@ public class Tile { private final int zoomLevel; private final Viewport viewPort; - public Tile(Geopoint origin, int zoomlevel) { + public Tile(final Geopoint origin, final int zoomlevel) { this(calcX(origin, clippedZoomlevel(zoomlevel)), calcY(origin, clippedZoomlevel(zoomlevel)), clippedZoomlevel(zoomlevel)); } - private Tile(int tileX, int tileY, int zoomlevel) { + private Tile(final int tileX, final int tileY, final int zoomlevel) { this.zoomLevel = clippedZoomlevel(zoomlevel); @@ -74,7 +74,7 @@ public class Tile { return zoomLevel; } - private static int clippedZoomlevel(int zoomlevel) { + private static int clippedZoomlevel(final int zoomlevel) { return Math.max(Math.min(zoomlevel, ZOOMLEVEL_MAX), ZOOMLEVEL_MIN); } @@ -95,7 +95,7 @@ public class Tile { */ private static int calcY(final Geopoint origin, final int zoomlevel) { // Optimization from Bing - double sinLatRad = Math.sin(Math.toRadians(origin.getLatitude())); + final double sinLatRad = Math.sin(Math.toRadians(origin.getLatitude())); // The cut of the fractional part instead of rounding to the nearest integer is intentional and part of the algorithm return (int) ((0.5 - Math.log((1 + sinLatRad) / (1 - sinLatRad)) / (4 * Math.PI)) * NUMBER_OF_TILES[zoomlevel]); } @@ -115,13 +115,13 @@ public class Tile { * href="http://developers.cloudmade.com/projects/tiles/examples/convert-coordinates-to-tile-numbers">Cloudmade</a> */ @NonNull - public Geopoint getCoord(UTFGridPosition pos) { + public Geopoint getCoord(final UTFGridPosition pos) { - double pixX = tileX * TILE_SIZE + pos.x * 4; - double pixY = tileY * TILE_SIZE + pos.y * 4; + final double pixX = tileX * TILE_SIZE + pos.x * 4; + final double pixY = tileY * TILE_SIZE + pos.y * 4; - double lonDeg = ((360.0 * pixX) / NUMBER_OF_PIXELS[this.zoomLevel]) - 180.0; - double latRad = Math.atan(Math.sinh(Math.PI * (1 - 2 * pixY / NUMBER_OF_PIXELS[this.zoomLevel]))); + final double lonDeg = ((360.0 * pixX) / NUMBER_OF_PIXELS[this.zoomLevel]) - 180.0; + final double latRad = Math.atan(Math.sinh(Math.PI * (1 - 2 * pixY / NUMBER_OF_PIXELS[this.zoomLevel]))); return new Geopoint(Math.toDegrees(latRad), lonDeg); } @@ -153,8 +153,8 @@ public class Tile { / Math.log(2) ); - Tile tileLeft = new Tile(left, zoom); - Tile tileRight = new Tile(right, zoom); + final Tile tileLeft = new Tile(left, zoom); + final Tile tileRight = new Tile(right, zoom); if (Math.abs(tileLeft.tileX - tileRight.tileX) < (numberOfTiles - 1)) { zoom += 1; @@ -190,8 +190,8 @@ public class Tile { ) / Math.log(2) ); - Tile tileBottom = new Tile(bottom, zoom); - Tile tileTop = new Tile(top, zoom); + final Tile tileBottom = new Tile(bottom, zoom); + final Tile tileTop = new Tile(top, zoom); if (Math.abs(tileBottom.tileY - tileTop.tileY) > (numberOfTiles - 1)) { zoom -= 1; @@ -200,7 +200,7 @@ public class Tile { return Math.min(zoom, ZOOMLEVEL_MAX); } - private static double tanGrad(double angleGrad) { + private static double tanGrad(final double angleGrad) { return Math.tan(angleGrad / 180.0 * Math.PI); } @@ -211,12 +211,12 @@ public class Tile { * @param x * @return */ - private static double asinh(double x) { + private static double asinh(final double x) { return Math.log(x + Math.sqrt(x * x + 1.0)); } @Override - public boolean equals(Object o) { + public boolean equals(final Object o) { if (this == o) { return true; } @@ -260,7 +260,7 @@ public class Tile { public Bitmap call() { try { return response != null ? BitmapFactory.decodeStream(response.getEntity().getContent()) : null; - } catch (IOException e) { + } catch (final IOException e) { Log.e("Tile.requestMapTile() ", e); return null; } @@ -298,20 +298,20 @@ public class Tile { * @return */ protected static Set<Tile> getTilesForViewport(final Viewport viewport, final int tilesOnAxis, final int minZoom) { - Set<Tile> tiles = new HashSet<>(); - int zoom = Math.max( + final Set<Tile> tiles = new HashSet<>(); + final int zoom = Math.max( Math.min(Tile.calcZoomLon(viewport.bottomLeft, viewport.topRight, tilesOnAxis), Tile.calcZoomLat(viewport.bottomLeft, viewport.topRight, tilesOnAxis)), minZoom); - Tile tileBottomLeft = new Tile(viewport.bottomLeft, zoom); - Tile tileTopRight = new Tile(viewport.topRight, zoom); + final Tile tileBottomLeft = new Tile(viewport.bottomLeft, zoom); + final Tile tileTopRight = new Tile(viewport.topRight, zoom); - int xLow = Math.min(tileBottomLeft.getX(), tileTopRight.getX()); - int xHigh = Math.max(tileBottomLeft.getX(), tileTopRight.getX()); + final int xLow = Math.min(tileBottomLeft.getX(), tileTopRight.getX()); + final int xHigh = Math.max(tileBottomLeft.getX(), tileTopRight.getX()); - int yLow = Math.min(tileBottomLeft.getY(), tileTopRight.getY()); - int yHigh = Math.max(tileBottomLeft.getY(), tileTopRight.getY()); + final int yLow = Math.min(tileBottomLeft.getY(), tileTopRight.getY()); + final int yHigh = Math.max(tileBottomLeft.getY(), tileTopRight.getY()); for (int xNum = xLow; xNum <= xHigh; xNum++) { for (int yNum = yLow; yNum <= yHigh; yNum++) { @@ -324,8 +324,6 @@ public class Tile { public static class TileCache extends LeastRecentlyUsedSet<Tile> { - private static final long serialVersionUID = -1942301031192719547L; - public TileCache() { super(64); } |