Merge pull request #209 from Esri/tyle8552/raster-layer-geopackage

raster layer geopackage sample

Author: john0005

src/main/java/com/esri/samples/raster/raster_layer_geopackage/README.md

@@ -0,0 +1,27 @@
+<h1>Raster Layer GeoPackage</h1>
+
+<p>Demonstrates how to show a raster layer using a geopackage.</p>
+
+<p><img src="RasterLayerGeoPackage.png"/></p>
+
+<h2>How it works</h2>
+
+<p>To add a<code>RasterLayer</code> as an operational layer from a <code>GeoPackage</code>:</p>
+<ol>
+  <li>Create and load a <code>GeoPackage</code>, specifying the path to the local .gpkg file.</li>
+  <li>When it is done loading, get the <code>GeoPackageRaster</code>s inside with <code>geoPackage
+  .getGeoPackageRasters()</code>.</li>
+  <li>Construct a <code>RasterLayer</code> with the <code>GeoPackageRaster</code> in the list you want to use.</li>
+  <li>Add the raster layer to the map as an operational layer <code>map.getOperationalLayers().add(rasterLayer)</code>.</li>
+</ol>
+
+<h2>Features</h2>
+
+<ul>
+  <li>ArcGISMap</li>
+  <li>Basemap</li>
+  <li>GeoPackage</li>
+  <li>GeoPackageRaster</li>
+  <li>MapView</li>
+  <li>RasterLayer</li>
+</ul>

src/main/java/com/esri/samples/raster/raster_layer_geopackage/RasterLayerGeoPackage.png

@@ -0,0 +1,118 @@
+/*
+ * Copyright 2018 Esri.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.esri.samples.raster.raster_layer_geopackage;
+
+import java.io.File;
+
+import javafx.application.Application;
+import javafx.scene.Scene;
+import javafx.scene.control.Alert;
+import javafx.scene.layout.StackPane;
+import javafx.stage.Stage;
+
+import com.esri.arcgisruntime.data.GeoPackage;
+import com.esri.arcgisruntime.layers.RasterLayer;
+import com.esri.arcgisruntime.loadable.LoadStatus;
+import com.esri.arcgisruntime.mapping.ArcGISMap;
+import com.esri.arcgisruntime.mapping.Basemap;
+import com.esri.arcgisruntime.mapping.view.MapView;
+import com.esri.arcgisruntime.raster.GeoPackageRaster;
+
+public class RasterLayerGeoPackageSample extends Application {
+
+  private MapView mapView;
+
+  @Override
+  public void start(Stage stage) throws Exception {
+
+    try {
+      // create stack pane and application scene
+      StackPane stackPane = new StackPane();
+      Scene scene = new Scene(stackPane);
+
+      // set title, size, and add scene to stage
+      stage.setTitle("Raster Layer GeoPackage");
+      stage.setWidth(800);
+      stage.setHeight(700);
+      stage.setScene(scene);
+      stage.show();
+
+      // create a map with light gray canvas vector basemap
+      ArcGISMap map = new ArcGISMap(Basemap.createLightGrayCanvasVector());
+      mapView = new MapView();
+      mapView.setMap(map);
+
+      // create a geopackage from a local gpkg file
+      GeoPackage geoPackage = new GeoPackage(new File("./samples-data/auroraCO/AuroraCO.gpkg").getAbsolutePath());
+
+      // load the geopackage
+      geoPackage.loadAsync();
+      geoPackage.addDoneLoadingListener(() -> {
+        if (geoPackage.getLoadStatus() == LoadStatus.LOADED && geoPackage.getGeoPackageRasters().size() > 0) {
+          // get the geopackage raster
+          GeoPackageRaster raster = geoPackage.getGeoPackageRasters().get(0);
+
+          // create a raster layer and add it to the map
+          RasterLayer rasterLayer = new RasterLayer(raster);
+          map.getOperationalLayers().add(rasterLayer);
+
+          // set viewpoint on the raster layer
+          rasterLayer.addDoneLoadingListener(() -> {
+            if (rasterLayer.getLoadStatus() == LoadStatus.LOADED) {
+              mapView.setViewpointGeometryAsync(rasterLayer.getFullExtent(), 150);
+            } else {
+              Alert alert = new Alert(Alert.AlertType.ERROR, "Failed to load raster layer");
+              alert.show();
+            }
+          });
+
+        } else {
+          Alert alert = new Alert(Alert.AlertType.ERROR, "Failed to load geopackage");
+          alert.show();
+        }
+      });
+
+      // add the map view to stack pane
+      stackPane.getChildren().addAll(mapView);
+    } catch (Exception e) {
+      // on any error, display the stack trace.
+      e.printStackTrace();
+    }
+  }
+
+  /**
+   * Stops and releases all resources used in application.
+   */
+  @Override
+  public void stop() {
+
+    if (mapView != null) {
+      mapView.dispose();
+    }
+  }
+
+  /**
+   * Opens and runs application.
+   *
+   * @param args arguments passed to this application
+   */
+  public static void main(String[] args) {
+
+    Application.launch(args);
+  }
+
+}