Merge pull request NASAWorldWind#214 from NASAWorldWind/collada

Add Collada example

Author: Beak-man

nbproject/configs/ColladaViewer.properties

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+main.class=gov.nasa.worldwindx.examples.ColladaViewer

src/gov/nasa/worldwindx/examples/ColladaViewer.java

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+/*
+ * Copyright 2006-2009, 2017, 2020 United States Government, as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All rights reserved.
+ * 
+ * The NASA World Wind Java (WWJ) platform is 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.
+ * 
+ * NASA World Wind Java (WWJ) also contains the following 3rd party Open Source
+ * software:
+ * 
+ *     Jackson Parser – Licensed under Apache 2.0
+ *     GDAL – Licensed under MIT
+ *     JOGL – Licensed under  Berkeley Software Distribution (BSD)
+ *     Gluegen – Licensed under Berkeley Software Distribution (BSD)
+ * 
+ * A complete listing of 3rd Party software notices and licenses included in
+ * NASA World Wind Java (WWJ)  can be found in the WorldWindJava-v2.2 3rd-party
+ * notices and licenses PDF found in code directory.
+ */
+package gov.nasa.worldwindx.examples;
+
+import gov.nasa.worldwind.*;
+import gov.nasa.worldwind.avlist.AVKey;
+import gov.nasa.worldwind.geom.Position;
+import gov.nasa.worldwind.layers.Layer;
+import gov.nasa.worldwind.layers.LayerList;
+import gov.nasa.worldwind.layers.RenderableLayer;
+import gov.nasa.worldwind.ogc.collada.ColladaRoot;
+import gov.nasa.worldwind.ogc.collada.impl.ColladaController;
+import gov.nasa.worldwind.util.WWUtil;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.File;
+
+/**
+ * Shows how to load <a href="https://www.khronos.org/collada/">COLLADA</a> 3D models.
+ */
+public class ColladaViewer extends ApplicationTemplate {
+
+    public static class AppFrame extends ApplicationTemplate.AppFrame {
+
+        public AppFrame() {
+            super(true, true, false); // Don't include the layer panel; we're using the on-screen layer tree.
+
+            // Size the WorldWindow to take up the space typically used by the layer panel.
+            Dimension size = new Dimension(1400, 800);
+            this.setPreferredSize(size);
+            this.pack();
+            WWUtil.alignComponent(null, this, AVKey.CENTER);
+            LayerList layers = getWwd().getModel().getLayers();
+            for (Layer layer : layers) {
+                String layerName = layer.getName();
+                if (layerName != null && layerName.toLowerCase().startsWith("bing")) {
+                    layer.setEnabled(true);
+                    break;
+                }
+            }
+        }
+
+        /**
+         * Adds the specified <code>colladaRoot</code> to this app frame's <code>WorldWindow</code> as a new
+         * <code>Layer</code>.
+         *
+         * @param colladaRoot the ColladaRoot to add a new layer for.
+         */
+        protected void addColladaLayer(ColladaRoot colladaRoot) {
+            // Create a ColladaController to adapt the ColladaRoot to the WorldWind renderable interface.
+            ColladaController colladaController = new ColladaController(colladaRoot);
+
+            // Adds a new layer containing the ColladaRoot to the end of the WorldWindow's layer list.
+            RenderableLayer layer = new RenderableLayer();
+            layer.addRenderable(colladaController);
+            this.getWwd().getModel().getLayers().add(layer);
+        }
+    }
+
+    // A <code>Thread</code> that loads a COLLADA file and displays it in an <code>AppFrame</code>.
+    public static class WorkerThread extends Thread {
+
+        // Indicates the source of the COLLADA file loaded by this thread. Initialized during construction.
+        protected Object colladaSource;
+
+        // Geographic position of the COLLADA model.
+        protected Position position;
+
+        // Indicates the <code>AppFrame</code> the COLLADA file content is displayed in. Initialized during
+        // construction.
+        protected AppFrame appFrame;
+
+        /**
+         * Creates a new worker thread from a specified <code>colladaSource</code> and <code>appFrame</code>.
+         *
+         * @param colladaSource the source of the COLLADA file to load. May be a {@link java.io.File}, a {@link
+         *                      java.net.URL}, or an {@link java.io.InputStream}, or a {@link String} identifying a file path or URL.
+         * @param position the geographic position of the COLLADA model.
+         * @param appFrame the <code>AppFrame</code> in which to display the COLLADA source.
+         */
+        public WorkerThread(Object colladaSource, Position position, AppFrame appFrame) {
+            this.colladaSource = colladaSource;
+            this.position = position;
+            this.appFrame = appFrame;
+        }
+
+        /**
+         * Loads this worker thread's COLLADA source into a new
+         * <code>{@link gov.nasa.worldwind.ogc.collada.ColladaRoot}</code>, then adds the new <code>ColladaRoot</code>
+         * to this worker thread's <code>AppFrame</code>.
+         */
+        @Override
+        public void run() {
+            try {
+                final ColladaRoot colladaRoot = ColladaRoot.createAndParse(this.colladaSource);
+                colladaRoot.setPosition(this.position);
+                colladaRoot.setAltitudeMode(WorldWind.RELATIVE_TO_GROUND);
+
+                // Schedule a task on the EDT to add the parsed document to a layer
+                SwingUtilities.invokeLater(() -> {
+                    appFrame.addColladaLayer(colladaRoot);
+                });
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+
+        // Set camera position and pitch angle.
+        Configuration.setValue(AVKey.INITIAL_LATITUDE, 40.028);
+        Configuration.setValue(AVKey.INITIAL_LONGITUDE, -105.27284091410579);
+        Configuration.setValue(AVKey.INITIAL_ALTITUDE, 4000);
+        Configuration.setValue(AVKey.INITIAL_PITCH, 50);
+
+        // Set the application frame to update, a position for the model, and a path to the COLLADA file.
+        final AppFrame af = (AppFrame) start("WorldWind COLLADA Viewer", AppFrame.class);
+        final Position MackyAuditoriumPosition = Position.fromDegrees(40.009993372683, -105.272774533734);
+        final File ColladaFile = new File("testData/collada/cu_macky/CU Macky.dae");
+
+        // Invoke the <code>Thread</code> to load the COLLADA model asynchronously.
+        new WorkerThread(ColladaFile, MackyAuditoriumPosition, af).start();
+
+    }
+}