/*
* Copyright (C) 2012 United States Government as represented by the Administrator of the
* National Aeronautics and Space Administration.
* All Rights Reserved.
*/
package gov.nasa.worldwindx.examples.applet;
import gov.nasa.worldwind.*;
import gov.nasa.worldwind.avlist.AVKey;
import gov.nasa.worldwind.awt.WorldWindowGLCanvas;
import gov.nasa.worldwindx.examples.ClickAndGoSelectListener;
import gov.nasa.worldwind.geom.*;
import gov.nasa.worldwind.layers.*;
import gov.nasa.worldwind.render.GlobeAnnotation;
import gov.nasa.worldwind.util.StatusBar;
import gov.nasa.worldwind.view.orbit.*;
//import netscape.javascript.JSObject;
import javax.swing.*;
import java.awt.*;
/**
* Illustrates the how to display a World Wind <code>{@link WorldWindow}</code> in a Java Applet and interact with the
* WorldWindow through JavaScript code running in the browser. This class extends <code>{@link JApplet}</code> and
* embeds a WorldWindowGLCanvas and a StatusBar in the Applet's content pane.
*
* @author Patrick Murris
* @version $Id: WWJApplet.java 1171 2013-02-11 21:45:02Z dcollins $
*/
public class WWJApplet extends JApplet
{
protected WorldWindowGLCanvas wwd;
protected RenderableLayer labelsLayer;
public WWJApplet()
{
}
public void init()
{
try
{
// Check for initial configuration values
String value = getParameter("InitialLatitude");
if (value != null)
Configuration.setValue(AVKey.INITIAL_LATITUDE, Double.parseDouble(value));
value = getParameter("InitialLongitude");
if (value != null)
Configuration.setValue(AVKey.INITIAL_LONGITUDE, Double.parseDouble(value));
value = getParameter("InitialAltitude");
if (value != null)
Configuration.setValue(AVKey.INITIAL_ALTITUDE, Double.parseDouble(value));
value = getParameter("InitialHeading");
if (value != null)
Configuration.setValue(AVKey.INITIAL_HEADING, Double.parseDouble(value));
value = getParameter("InitialPitch");
if (value != null)
Configuration.setValue(AVKey.INITIAL_PITCH, Double.parseDouble(value));
// Create World Window GL Canvas
this.wwd = new WorldWindowGLCanvas();
this.getContentPane().add(this.wwd, BorderLayout.CENTER);
// Create the default model as described in the current worldwind properties.
Model m = (Model) WorldWind.createConfigurationComponent(AVKey.MODEL_CLASS_NAME);
this.wwd.setModel(m);
// Add a renderable layer for application labels
this.labelsLayer = new RenderableLayer();
this.labelsLayer.setName("Labels");
insertBeforeLayerName(this.wwd, this.labelsLayer, "Compass");
// Add the status bar
StatusBar statusBar = new StatusBar();
this.getContentPane().add(statusBar, BorderLayout.PAGE_END);
// Forward events to the status bar to provide the cursor position info.
statusBar.setEventSource(this.wwd);
// Setup a select listener for the worldmap click-and-go feature
this.wwd.addSelectListener(new ClickAndGoSelectListener(this.wwd, WorldMapLayer.class));
// Call javascript appletInit()
try
{
//JSObject win = JSObject.getWindow(this);
//win.call("appletInit", null);
}
catch (Exception ignore)
{
}
}
catch (Throwable e)
{
e.printStackTrace();
}
}
public void start()
{
// Call javascript appletStart()
try
{
//JSObject win = JSObject.getWindow(this);
//win.call("appletStart", null);
}
catch (Exception ignore)
{
}
}
public void stop()
{
// Call javascript appletSop()
try
{
//JSObject win = JSObject.getWindow(this);
//win.call("appletStop", null);
}
catch (Exception ignore)
{
}
// Shut down World Wind when the browser stops this Applet.
WorldWind.shutDown();
}
/**
* Adds a layer to WW current layerlist, before a named layer. Target name can be a part of the layer name
*
* @param wwd the <code>WorldWindow</code> reference.
* @param layer the layer to be added.
* @param targetName the partial layer name to be matched - case sensitive.
*/
public static void insertBeforeLayerName(WorldWindow wwd, Layer layer, String targetName)
{
// Insert the layer into the layer list just before the target layer.
LayerList layers = wwd.getModel().getLayers();
int targetPosition = layers.size() - 1;
for (Layer l : layers)
{
if (l.getName().indexOf(targetName) != -1)
{
targetPosition = layers.indexOf(l);
break;
}
}
layers.add(targetPosition, layer);
}
// ============== Public API - Javascript ======================= //
/**
* Move the current view position
*
* @param lat the target latitude in decimal degrees
* @param lon the target longitude in decimal degrees
*/
public void gotoLatLon(double lat, double lon)
{
this.gotoLatLon(lat, lon, Double.NaN, 0, 0);
}
/**
* Move the current view position, zoom, heading and pitch
*
* @param lat the target latitude in decimal degrees
* @param lon the target longitude in decimal degrees
* @param zoom the target eye distance in meters
* @param heading the target heading in decimal degrees
* @param pitch the target pitch in decimal degrees
*/
public void gotoLatLon(double lat, double lon, double zoom, double heading, double pitch)
{
BasicOrbitView view = (BasicOrbitView) this.wwd.getView();
if (!Double.isNaN(lat) || !Double.isNaN(lon) || !Double.isNaN(zoom))
{
lat = Double.isNaN(lat) ? view.getCenterPosition().getLatitude().degrees : lat;
lon = Double.isNaN(lon) ? view.getCenterPosition().getLongitude().degrees : lon;
zoom = Double.isNaN(zoom) ? view.getZoom() : zoom;
heading = Double.isNaN(heading) ? view.getHeading().degrees : heading;
pitch = Double.isNaN(pitch) ? view.getPitch().degrees : pitch;
view.addPanToAnimator(Position.fromDegrees(lat, lon, 0),
Angle.fromDegrees(heading), Angle.fromDegrees(pitch), zoom, true);
}
}
/**
* Set the current view heading and pitch
*
* @param heading the target heading in decimal degrees
* @param pitch the target pitch in decimal degrees
*/
public void setHeadingAndPitch(double heading, double pitch)
{
BasicOrbitView view = (BasicOrbitView) this.wwd.getView();
if (!Double.isNaN(heading) || !Double.isNaN(pitch))
{
heading = Double.isNaN(heading) ? view.getHeading().degrees : heading;
pitch = Double.isNaN(pitch) ? view.getPitch().degrees : pitch;
view.addHeadingPitchAnimator(
view.getHeading(), Angle.fromDegrees(heading), view.getPitch(), Angle.fromDegrees(pitch));
}
}
/**
* Set the current view zoom
*
* @param zoom the target eye distance in meters
*/
public void setZoom(double zoom)
{
BasicOrbitView view = (BasicOrbitView) this.wwd.getView();
if (!Double.isNaN(zoom))
{
view.addZoomAnimator(view.getZoom(), zoom);
}
}
/**
* Get the WorldWindowGLCanvas
*
* @return the current WorldWindowGLCanvas
*/
public WorldWindowGLCanvas getWW()
{
return this.wwd;
}
/**
* Get the current OrbitView
*
* @return the current OrbitView
*/
public OrbitView getOrbitView()
{
if (this.wwd.getView() instanceof OrbitView)
return (OrbitView) this.wwd.getView();
return null;
}
/**
* Get a reference to a layer with part of its name
*
* @param layerName part of the layer name to match.
*
* @return the corresponding layer or null if not found.
*/
public Layer getLayerByName(String layerName)
{
for (Layer layer : wwd.getModel().getLayers())
{
if (layer.getName().indexOf(layerName) != -1)
return layer;
}
return null;
}
/**
* Add a text label at a position on the globe.
*
* @param text the text to be displayed.
* @param lat the latitude in decimal degrees.
* @param lon the longitude in decimal degrees.
* @param font a string describing the font to be used.
* @param color the color to be used as an hexadecimal coded string.
*/
public void addLabel(String text, double lat, double lon, String font, String color)
{
GlobeAnnotation ga = new GlobeAnnotation(text, Position.fromDegrees(lat, lon, 0),
Font.decode(font), Color.decode(color));
ga.getAttributes().setBackgroundColor(Color.BLACK);
ga.getAttributes().setDrawOffset(new Point(0, 0));
ga.getAttributes().setFrameShape(AVKey.SHAPE_NONE);
ga.getAttributes().setEffect(AVKey.TEXT_EFFECT_OUTLINE);
ga.getAttributes().setTextAlign(AVKey.CENTER);
this.labelsLayer.addRenderable(ga);
}
}