diff options
Diffstat (limited to 'platform/android/MapboxGLAndroidSDK')
5 files changed, 274 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java index 4fcb91033c..4e22814a2c 100644 --- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java @@ -231,6 +231,25 @@ public class LatLngBounds implements Parcelable { return new LatLngBounds(latNorth, lonEast, latSouth, lonWest); } + private static double lat_(int z, int y) { + double n = Math.PI - 2.0 * Math.PI * y / Math.pow(2.0, z); + return Math.toDegrees(Math.atan(0.5 * (Math.exp(n) - Math.exp(-n)))); + } + + private static double lon_(int z, int x) { + return x / Math.pow(2.0, z) * 360.0 - GeoConstants.MAX_LONGITUDE; + } + + /** + * Constructs a LatLngBounds from a Tile identifier. + * @param z Tile zoom level. + * @param x Tile X coordinate. + * @param y Tile Y coordinate. + */ + public static LatLngBounds from(int z, int x, int y) { + return new LatLngBounds(lat_(z, y), lon_(z, x + 1), lat_(z, y + 1), lon_(z, x)); + } + /** * Constructs a LatLngBounds from current bounds with an additional latitude-longitude pair. * diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/CustomGeometrySource.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/CustomGeometrySource.java new file mode 100644 index 0000000000..e10be1d4ba --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/CustomGeometrySource.java @@ -0,0 +1,203 @@ +package com.mapbox.mapboxsdk.style.sources; + +import android.support.annotation.NonNull; +import android.support.annotation.Nullable; +import android.support.annotation.UiThread; +import android.support.annotation.WorkerThread; + +import com.mapbox.mapboxsdk.geometry.LatLngBounds; +import com.mapbox.mapboxsdk.style.layers.Filter; +import com.mapbox.services.commons.geojson.Feature; +import com.mapbox.services.commons.geojson.FeatureCollection; + +import java.lang.ref.WeakReference; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.atomic.AtomicBoolean; + +/** + * Custom Vector Source, allows using FeatureCollections. + * + */ +@UiThread +public class CustomGeometrySource extends Source { + private ExecutorService executor; + private GeometryTileProvider provider; + private final Map<TileID, AtomicBoolean> cancelledTileRequests = new ConcurrentHashMap<>(); + + /** + * Create a CustomGeometrySource + * + * @param id The source id. + * @param provider The tile provider that returns geometry data for this source. + */ + public CustomGeometrySource(String id, GeometryTileProvider provider) { + this(id, provider, new GeoJsonOptions()); + } + + /** + * Create a CustomGeometrySource with non-default GeoJsonOptions. + * <p>Supported options are minZoom, maxZoom, buffer, and tolerance.</p> + * + * @param id The source id. + * @param provider The tile provider that returns geometry data for this source. + * @param options GeoJsonOptions. + */ + public CustomGeometrySource(String id, GeometryTileProvider provider, GeoJsonOptions options) { + this.provider = provider; + executor = Executors.newFixedThreadPool(4); + initialize(this, id, options); + } + + /** + * Invalidate previously provided features within a given bounds at all zoom levels. + * Invoking this method will result in new requests to `GeometryTileProvider` for regions + * that contain, include, or intersect with the provided bounds. + * + * @param bounds The region in which features should be invalidated at all zoom levels + */ + public void invalidateRegion(LatLngBounds bounds) { + nativeInvalidateBounds(bounds); + } + + /** + * Invalidate the geometry contents of a specific tile. Invoking this method will result + * in new requests to `GeometryTileProvider` for visible tiles. + * + * @param zoomLevel Tile zoom level. + * @param x Tile X coordinate. + * @param y Tile Y coordinate. + */ + public void invalidateTile(int zoomLevel, int x, int y) { + nativeInvalidateTile(zoomLevel, x, y); + } + + /** + * Set or update geometry contents of a specific tile. Use this method to update tiles + * for which `GeometryTileProvider` was previously invoked. This method can be called from + * background threads. + * + * @param zoomLevel Tile zoom level. + * @param x Tile X coordinate. + * @param y Tile Y coordinate. + * @param data Feature collection for the tile. + */ + public void setTileData(int zoomLevel, int x, int y, FeatureCollection data) { + nativeSetTileData(zoomLevel, x, y, data); + } + + /** + * Queries the source for features. + * + * @param filter an optional filter statement to filter the returned Features + * @return the features + */ + @NonNull + public List<Feature> querySourceFeatures(@Nullable Filter.Statement filter) { + Feature[] features = querySourceFeatures(filter != null ? filter.toArray() : null); + return features != null ? Arrays.asList(features) : new ArrayList<Feature>(); + } + + protected native void initialize(CustomGeometrySource self, String sourceId, Object options); + + private native Feature[] querySourceFeatures(Object[] filter); + + private native void nativeSetTileData(int z, int x, int y, FeatureCollection data); + + private native void nativeInvalidateTile(int z, int x, int y); + + private native void nativeInvalidateBounds(LatLngBounds bounds); + + @Override + protected native void finalize() throws Throwable; + + private void setTileData(TileID tileId, FeatureCollection data) { + cancelledTileRequests.remove(tileId); + nativeSetTileData(tileId.z, tileId.x, tileId.y, data); + } + + @WorkerThread + private void fetchTile(int z, int x, int y) { + AtomicBoolean cancelFlag = new AtomicBoolean(false); + TileID tileID = new TileID(z, x, y); + cancelledTileRequests.put(tileID, cancelFlag); + GeometryTileRequest request = new GeometryTileRequest(tileID, provider, this, cancelFlag); + executor.submit(request); + } + + @WorkerThread + private void cancelTile(int z, int x, int y) { + AtomicBoolean cancelFlag = cancelledTileRequests.get(new TileID(z, x, y)); + if (cancelFlag != null) { + cancelFlag.compareAndSet(false, true); + } + } + + private static class TileID { + public int z; + public int x; + public int y; + + public TileID(int _z, int _x, int _y) { + z = _z; + x = _x; + y = _y; + } + + public int hashCode() { + return Arrays.hashCode(new int[]{z, x, y}); + } + + public boolean equals(Object object) { + if (object == this) { + return true; + } + + if (object == null || getClass() != object.getClass()) { + return false; + } + + if (object instanceof TileID) { + TileID other = (TileID)object; + return this.z == other.z && this.x == other.x && this.y == other.y; + } + return false; + } + } + + private static class GeometryTileRequest implements Runnable { + private TileID id; + private GeometryTileProvider provider; + private WeakReference<CustomGeometrySource> sourceRef; + private AtomicBoolean cancelled; + + public GeometryTileRequest(TileID _id, GeometryTileProvider p, + CustomGeometrySource _source, AtomicBoolean _cancelled) { + id = _id; + provider = p; + sourceRef = new WeakReference<>(_source); + cancelled = _cancelled; + } + + public void run() { + if (isCancelled()) { + return; + } + + FeatureCollection data = provider.getFeaturesForBounds(LatLngBounds.from(id.z, id.x, id.y), id.z); + CustomGeometrySource source = sourceRef.get(); + if (!isCancelled() && source != null && !data.getFeatures().isEmpty()) { + source.setTileData(id, data); + } + } + + private Boolean isCancelled() { + return cancelled.get(); + } + } +} diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeoJsonOptions.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeoJsonOptions.java index 1a1711e547..81f7255b86 100644 --- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeoJsonOptions.java +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeoJsonOptions.java @@ -16,6 +16,17 @@ public class GeoJsonOptions extends HashMap<String, Object> { * @param maxZoom the maximum zoom - Defaults to 18. * @return the current instance for chaining */ + public GeoJsonOptions withMinZoom(int minZoom) { + this.put("minzoom", minZoom); + return this; + } + + /** + * Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels). + * + * @param maxZoom the maximum zoom - Defaults to 18. + * @return the current instance for chaining + */ public GeoJsonOptions withMaxZoom(int maxZoom) { this.put("maxzoom", maxZoom); return this; diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeometryTileProvider.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeometryTileProvider.java new file mode 100644 index 0000000000..3f1eb315d3 --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/sources/GeometryTileProvider.java @@ -0,0 +1,22 @@ +package com.mapbox.mapboxsdk.style.sources; + +import android.support.annotation.WorkerThread; + +import com.mapbox.mapboxsdk.geometry.LatLngBounds; +import com.mapbox.services.commons.geojson.FeatureCollection; + +/** + * Interface that defines methods for working with {@link CustomGeometrySource}. + */ +public interface GeometryTileProvider { + + /*** + * Interface method called by {@link CustomGeometrySource} to request features for a tile. + * + * @param bounds {@link LatLngBounds} of the tile. + * @param zoomLevel Tile zoom level. + * @return Return a @{link FeatureCollection} to be displayed in the requested tile. + */ + @WorkerThread + FeatureCollection getFeaturesForBounds(LatLngBounds bounds, int zoomLevel); +} diff --git a/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/geometry/LatLngBoundsTest.java b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/geometry/LatLngBoundsTest.java index bb96c9939d..4eb8e237fd 100644 --- a/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/geometry/LatLngBoundsTest.java +++ b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/geometry/LatLngBoundsTest.java @@ -4,6 +4,7 @@ import android.os.Parcelable; import com.mapbox.mapboxsdk.exceptions.InvalidLatLngBoundsException; import com.mapbox.mapboxsdk.utils.MockParcel; +import com.mapbox.services.android.telemetry.constants.GeoConstants; import org.junit.Before; import org.junit.Test; @@ -272,4 +273,22 @@ public class LatLngBoundsTest { Parcelable parcel = MockParcel.obtain(latLngBounds); assertEquals("Parcel should match original object", parcel, latLngBounds); } + + @Test + public void fromTileID() { + //GeoConstants.MAX_LATITUDE is not defined to a high enough precision + double MAX_LATITUDE = 85.05112877980659; + LatLngBounds bounds = LatLngBounds.from(0, 0, 0); + assertEquals(-GeoConstants.MAX_LONGITUDE, bounds.getLonWest(), DELTA); + assertEquals(-MAX_LATITUDE, bounds.getLatSouth(), DELTA); + assertEquals(GeoConstants.MAX_LONGITUDE, bounds.getLonEast(), DELTA); + assertEquals(MAX_LATITUDE, bounds.getLatNorth(), DELTA); + + bounds = LatLngBounds.from(10, 288, 385); + assertEquals(-78.75, bounds.getLonWest(), DELTA); + assertEquals(40.446947059600497, bounds.getLatSouth(), DELTA); + assertEquals(-78.3984375, bounds.getLonEast(), DELTA); + assertEquals(40.713955826286039, bounds.getLatNorth(), DELTA); + + } } |