// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/j3d/com/bbn/openmap/tools/j3d/MapContentManager.java,v $
// $RCSfile: MapContentManager.java,v $
// $Revision: 1.6 $
// $Date: 2005/08/11 21:34:55 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.tools.j3d;
import java.awt.BorderLayout;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Background;
import javax.media.j3d.Behavior;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Group;
import javax.media.j3d.TransformGroup;
import javax.swing.JFrame;
import com.bbn.openmap.MapBean;
import com.bbn.openmap.MapHandler;
import com.bbn.openmap.proj.Projection;
import com.bbn.openmap.util.Debug;
/**
* The 3D manager that takes an OpenMap MapHandler, and creates a 3D
* world from the layers in it. The layer's OMGraphics are converted
* to 3D objects.
*
* @author dietrick
*/
public class MapContentManager extends OM3DManager {
protected MapContentManager() {
super.init();
}
/**
* @param mapHandler the OpenMap MapHandler.
*/
public MapContentManager(MapHandler mapHandler, int contentMask) {
this(mapHandler, new Background(0f, 0f, 0f), contentMask);
}
/**
* @param mapHandler the OpenMap MapHandler.
* @param background the background object to use for the 3D
* scene. Use this to change the sky color, for instance.
*/
public MapContentManager(MapHandler mapHandler, Background background,
int contentMask) {
super.init();
createWorld(mapHandler, background, contentMask);
}
protected void createWorld(MapHandler mapHandler, Background background,
int contentMask) {
setSceneBackground(background);
// objRootBG gets created in super class
addMapContent(mapHandler, objRootBG, contentMask);
}
/**
* IMPORTANT! You need to call this to compile the universe after
* everything is set.
*/
public void compileUniverse() {
// Important!! Compiles the universe
((UniverseManager) universe).makeLive();
}
public void addBehavior(Behavior behavior) {
objRootBG.addChild(behavior);
}
/**
* This is the main function that gets called when the
* MapContentViewer is created, to create the world objects in the
* universe. It builds the objects to put in the J3D world from
* the objects contained within the MapHandler. This method calls
* setCameraLocation(), so you can modify where the camera is
* placed there, and then calls createMapContent() to have a
* BranchGroup created with 3D objects. You can modify those
* methods to adjust how things get created.
*
* @param mapHandler The feature to be added to the MapContent
* attribute
* @param worldGroup The feature to be added to the MapContent
* attribute
*/
protected void addMapContent(MapHandler mapHandler, BranchGroup worldGroup,
int contentMask) {
Projection projection = null;
if (mapHandler != null) {
MapBean mapBean = (MapBean) mapHandler.get("com.bbn.openmap.MapBean");
if (mapBean != null) {
projection = mapBean.getProjection();
}
TransformGroup mapTransformGroup = new TransformGroup();
mapTransformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
mapTransformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
Debug.message("3d", "OM3DViewer: adding map content");
BoundingSphere bs = new BoundingSphere(ORIGIN, boundsDimension);
//BoundingLeaf boundingLeaf = new BoundingLeaf(bs);
background.setApplicationBounds(bs);
mapTransformGroup.addChild(background);
createMapContent(mapTransformGroup, mapHandler, contentMask);
// Lights up the whole world. If this isn't added, the
// land is black
AmbientLight ambientLight = new AmbientLight();
ambientLight.setInfluencingBounds(bs);
worldGroup.addChild(ambientLight);
// ///////
Behavior beh = getMotionBehavior((TransformGroup) getCamera().getNode(),
projection);
beh.setSchedulingBounds(bs);
worldGroup.addChild(beh);
// ///////
worldGroup.addChild(mapTransformGroup);
}
}
protected void createMapContent(TransformGroup mapTransformGroup,
MapHandler mapHandler, int contentMask) {
if ((contentMask & CONTENT_MASK_OMGRAPHICHANDLERLAYERS) != 0) {
mapTransformGroup.addChild(createLayerMapContent(mapHandler));
}
mapTransformGroup.addChild(createMapContent(mapHandler, contentMask));
}
/**
* Called from addMapContent. Create a BranchGroup, and put your
* 3D objects in it. The MapBean in the MapHandler has a
* projection that can be used to lay things out, and the layers
* have objects to render.
*
* @param mapHandler Description of the Parameter
* @return Description of the Return Value
*/
protected Group createLayerMapContent(MapHandler mapHandler) {
return new LayerMapContent(mapHandler);
}
/**
* @param mapHandler Description of the Parameter
* @return Description of the Return Value
*/
protected Group createMapContent(MapHandler mapHandler, int contentMask) {
return new MapContent(mapHandler, contentMask);
}
/**
* Called from addMapContent(), to set up the Transforms for
* motion. The projection is provided in case you want to locate
* the camera or map in a certain geographical location.
*
* @param cameraTransform Description of the Parameter
* @param projection Description of the Parameter
* @return The motionBehavior value
*/
public Behavior getMotionBehavior(TransformGroup cameraTransform,
Projection projection) {
return new OMKeyBehavior(cameraTransform, projection);
}
public static JFrame getFrame(String title, int width, int height,
MapHandler mapHandler, Background background,
int contentMask) {
JFrame frame = new JFrame(title);
frame.setSize(width, height);
frame.getContentPane().setLayout(new BorderLayout());
MapContentManager mc3d = new MapContentManager(mapHandler, background, contentMask);
mc3d.compileUniverse();
frame.getContentPane().add("Center", mc3d.getCanvas());
return frame;
}
}