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|
import java.awt.Color;
import java.awt.GridLayout;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingBox;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.Bounds;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Group;
import javax.media.j3d.Light;
import javax.media.j3d.Material;
import javax.media.j3d.Node;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.swing.JComponent;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.eteks.sweethome3d.model.FurnitureEvent;
import com.eteks.sweethome3d.model.FurnitureListener;
import com.eteks.sweethome3d.model.Home;
import com.eteks.sweethome3d.model.HomePieceOfFurniture;
import com.eteks.sweethome3d.model.PieceOfFurniture;
import com.eteks.sweethome3d.model.Wall;
import com.eteks.sweethome3d.model.WallEvent;
import com.eteks.sweethome3d.model.WallListener;
import com.sun.j3d.loaders.IncorrectFormatException;
import com.sun.j3d.loaders.ParsingErrorException;
import com.sun.j3d.loaders.Scene;
import com.sun.j3d.loaders.objectfile.ObjectFile;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.geometry.GeometryInfo;
import com.sun.j3d.utils.geometry.NormalGenerator;
import com.sun.j3d.utils.universe.SimpleUniverse;
/**
* A component that displays home walls and furniture with Java 3D.
* @author Emmanuel Puybaret
*/
public class HomeComponent3D extends JComponent {
private Map<Object, ObjectBranch> homeObjects =
new HashMap<Object, ObjectBranch>();
/**
* Creates a 3D component that displays <code>home</code> walls and furniture.
*/
public HomeComponent3D(Home home) {
// Create the Java 3D canvas that will display home
Canvas3D canvas3D = new Canvas3D(
SimpleUniverse.getPreferredConfiguration());
// Link it to a default univers
SimpleUniverse universe = new SimpleUniverse(canvas3D);
universe.getViewingPlatform().setNominalViewingTransform();
// Link scene matching home to universe
universe.addBranchGraph(getSceneTree(home));
// Layout canvas3D
setLayout(new GridLayout(1, 1));
add(canvas3D);
// This component doesn't manage keyboard at this time,
// so it's useless to let its canvas be focusable
canvas3D.setFocusable(false);
}
/**
* Returns scene tree root.
*/
private BranchGroup getSceneTree(Home home) {
BranchGroup root = new BranchGroup();
Group mainGroup = getMainGroup();
Group behaviorGroup = getBehaviorGroup();
// Build scene tree
behaviorGroup.addChild(getHomeTree(home));
mainGroup.addChild(behaviorGroup);
root.addChild(mainGroup);
root.addChild(getBackgroundNode());
for (Light light : getLights()) {
root.addChild(light);
}
return root;
}
/**
* Returns the group initialized to view a home
* with a angle of view of 45?.
*/
private Group getMainGroup() {
Transform3D rotationX = new Transform3D();
rotationX.rotX(Math.PI / 4);
return new TransformGroup(rotationX);
}
/**
* Returns the group which behavior controls the orientation of the scene.
*/
private Group getBehaviorGroup() {
TransformGroup transformGroup = new TransformGroup();
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
MouseRotate mouseBehavior = new MouseRotate(transformGroup);
mouseBehavior.setFactor(mouseBehavior.getXFactor(), 0);
Bounds schedulingBounds = new BoundingBox();
mouseBehavior.setSchedulingBounds(schedulingBounds);
// Add behavior to transform group to activate it
transformGroup.addChild(mouseBehavior);
return transformGroup;
}
/**
* Returns the background node.
*/
private Node getBackgroundNode() {
Background background = new Background(0.9f, 0.9f, 0.9f);
background.setApplicationBounds(new BoundingBox());
return background;
}
/**
* Returns the lights of the scene.
*/
private Light [] getLights() {
Light [] lights = {
new DirectionalLight(new Color3f(1, 1, 1),
new Vector3f(1, -1, -1)),
new DirectionalLight(new Color3f(1, 1, 1),
new Vector3f(-1, -1, -1)),
new AmbientLight(new Color3f(0.6f, 0.6f, 0.6f))};
for (Light light : lights) {
light.setInfluencingBounds(new BoundingSphere(new Point3d(), 1000000));
}
return lights;
}
/**
* Returns <code>home</code> tree node, with branches for each wall
* and piece of furniture of <code>home</code>.
*/
private Node getHomeTree(Home home) {
Group homeRoot = getHomeRoot();
// Add walls and pieces already available
for (Wall wall : home.getWalls())
addWall(homeRoot, wall, home);
for (HomePieceOfFurniture piece : home.getFurniture())
addPieceOfFurniture(homeRoot, piece);
// Add wall and furniture listeners to home for further update
addHomeListeners(home, homeRoot);
return homeRoot;
}
/**
* Returns the group at home subtree root.
*/
private Group getHomeRoot() {
// Create a transform group initialized to view
// a home of 1000 centimeters wide in a box of 1 unit centered at origin
Transform3D translation = new Transform3D();
translation.setTranslation(new Vector3f(-500, 0, -500));
Transform3D homeTransform = new Transform3D();
homeTransform.setScale(0.001);
homeTransform.mul(translation);
TransformGroup homeTransformGroup =
new TransformGroup(homeTransform);
// Allow transform group to have new children
homeTransformGroup.setCapability(Group.ALLOW_CHILDREN_WRITE);
homeTransformGroup.setCapability(Group.ALLOW_CHILDREN_EXTEND);
return homeTransformGroup;
}
/**
* Adds listeners to <code>home</code> that updates the scene <code>homeRoot</code>,
* each time a piece of furniture or a wall is added, updated or deleted.
*/
private void addHomeListeners(final Home home, final Group homeRoot) {
home.addWallListener(new WallListener() {
public void wallChanged(WallEvent ev) {
Wall wall = ev.getWall();
switch (ev.getType()) {
case ADD :
addWall(homeRoot, wall, home);
break;
case UPDATE :
updateWall(wall);
break;
case DELETE :
deleteObject(wall);
break;
}
}
});
home.addFurnitureListener(new FurnitureListener() {
public void pieceOfFurnitureChanged(FurnitureEvent ev) {
HomePieceOfFurniture piece = (HomePieceOfFurniture)ev.getPieceOfFurniture();
switch (ev.getType()) {
case ADD :
addPieceOfFurniture(homeRoot, piece);
break;
case UPDATE :
updatePieceOfFurniture(piece);
break;
case DELETE :
deleteObject(piece);
break;
}
}
});
}
/**
* Adds to <code>homeRoot</code> a wall branch matching <code>wall</code>.
*/
private void addWall(Group homeRoot, Wall wall, Home home) {
Wall3D wall3D = new Wall3D(wall, home);
this.homeObjects.put(wall, wall3D);
homeRoot.addChild(wall3D);
}
/**
* Updates <code>wall</code> geometry,
* and the walls at its end or start.
*/
private void updateWall(Wall wall) {
this.homeObjects.get(wall).update();
if (wall.getWallAtStart() != null) {
this.homeObjects.get(wall.getWallAtStart()).update();
}
if (wall.getWallAtEnd() != null) {
this.homeObjects.get(wall.getWallAtEnd()).update();
}
}
/**
* Detaches from the scene the branch matching <code>homeObject</code>.
*/
private void deleteObject(Object homeObject) {
this.homeObjects.get(homeObject).detach();
this.homeObjects.remove(homeObject);
}
/**
* Adds to <code>homeRoot</code> a piece branch matching <code>piece</code>.
*/
private void addPieceOfFurniture(Group homeRoot, HomePieceOfFurniture piece) {
HomePieceOfFurniture3D piece3D = new HomePieceOfFurniture3D(piece);
this.homeObjects.put(piece, piece3D);
homeRoot.addChild(piece3D);
}
/**
* Updates <code>piece</code> scale, angle and location.
*/
private void updatePieceOfFurniture(HomePieceOfFurniture piece) {
this.homeObjects.get(piece).update();
}
/**
* Root of a branch that matches a home object.
*/
private static abstract class ObjectBranch extends BranchGroup {
public abstract void update();
}
/**
* Root of wall branch.
*/
private static class Wall3D extends ObjectBranch {
private Home home;
public Wall3D(Wall wall, Home home) {
setUserData(wall);
this.home = home;
// Allow wall branch to be removed from its parent
setCapability(BranchGroup.ALLOW_DETACH);
// Allow to read branch shape child
setCapability(BranchGroup.ALLOW_CHILDREN_READ);
// Add wall shape to branch
addChild(getWallShape());
// Set wall shape geometry and appearance
updateWallGeometry();
updateWallAppearance();
}
/**
* Returns an empty wall shape.
*/
private Node getWallShape() {
Shape3D wallShape = new Shape3D();
// Allow wall shape to change its geometry
wallShape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
return wallShape;
}
@Override
public void update() {
updateWallGeometry();
}
/**
* Sets the 3D geometry of this wall that matches its 2D geometry.
*/
private void updateWallGeometry() {
float [][] wallPoints = ((Wall)getUserData()).getPoints();
// Create points for the bottom and the top of the wall
Point3f [] bottom = new Point3f [4];
Point3f [] top = new Point3f [4];
for (int i = 0; i < bottom.length; i++) {
bottom [i] = new Point3f(
wallPoints[i][0], 0, wallPoints[i][1]);
top [i] = new Point3f(
wallPoints[i][0], this.home.getWallHeight(), wallPoints[i][1]);
}
// List of the 6 quadrilaterals of the wall
Point3f [] wallCoordinates = {
bottom [0], bottom [1], bottom [2], bottom [3],
bottom [1], bottom [0], top [0], top [1],
bottom [2], bottom [1], top [1], top [2],
bottom [3], bottom [2], top [2], top [3],
bottom [0], bottom [3], top [3], top [0],
top [3], top [2], top [1], top [0]};
// Build wall geomtry
GeometryInfo geometryInfo =
new GeometryInfo(GeometryInfo.QUAD_ARRAY);
geometryInfo.setCoordinates(wallCoordinates);
// Generates normals
new NormalGenerator(0).generateNormals(geometryInfo);
// Change wall geometry
((Shape3D)getChild(0)).setGeometry(
geometryInfo.getIndexedGeometryArray());
}
/**
* Sets wall appearance with a white color.
*/
private void updateWallAppearance() {
Appearance wallAppearance = new Appearance();
Material material = new Material();
wallAppearance.setMaterial(material);
((Shape3D)getChild(0)).setAppearance(wallAppearance);
}
}
/**
* Root of piece of furniture branch.
*/
private static class HomePieceOfFurniture3D extends ObjectBranch {
private static Executor modelLoader = Executors.newSingleThreadExecutor();
public HomePieceOfFurniture3D(HomePieceOfFurniture piece) {
setUserData(piece);
// Allow piece branch to be removed from its parent
setCapability(BranchGroup.ALLOW_DETACH);
// Allow to read branch transform child
setCapability(BranchGroup.ALLOW_CHILDREN_READ);
addChild(getPieceOfFurnitureNode());
// Set piece model initial location, orientation and size
updatePieceOfFurnitureTransform();
}
/**
* Returns piece node with its transform group.
*/
private Node getPieceOfFurnitureNode() {
final TransformGroup pieceTransformGroup = new TransformGroup();
// Allow the change of the transformation that sets piece size and position
pieceTransformGroup.setCapability(
TransformGroup.ALLOW_TRANSFORM_WRITE);
pieceTransformGroup.setCapability(Group.ALLOW_CHILDREN_WRITE);
pieceTransformGroup.setCapability(Group.ALLOW_CHILDREN_EXTEND);
// While loading model use a temporary node that displays a white box
final BranchGroup waitBranch = new BranchGroup();
waitBranch.setCapability(BranchGroup.ALLOW_DETACH);
waitBranch.addChild(getModelBox(Color.WHITE));
pieceTransformGroup.addChild(waitBranch);
// Load piece real 3D model
modelLoader.execute(new Runnable() {
public void run() {
BranchGroup modelBranch = new BranchGroup();
modelBranch.addChild(getModelNode());
pieceTransformGroup.addChild(modelBranch);
// Remove temporary node
waitBranch.detach();
}
});
return pieceTransformGroup;
}
@Override
public void update() {
updatePieceOfFurnitureTransform();
}
/**
* Sets the transformation applied to piece model to match
* its location, its angle and its size.
*/
private void updatePieceOfFurnitureTransform() {
HomePieceOfFurniture piece = (HomePieceOfFurniture)getUserData();
// Set piece size
Transform3D scale = new Transform3D();
scale.setScale(new Vector3d(piece.getWidth(), piece.getHeight(), piece.getDepth()));
// Change its angle around y axis
Transform3D orientation = new Transform3D();
orientation.rotY(-piece.getAngle());
// Translate it to its location
Transform3D pieceTransform = new Transform3D();
pieceTransform.setTranslation(new Vector3f(piece.getX(), piece.getHeight() / 2, piece.getY()));
pieceTransform.mul(orientation);
pieceTransform.mul(scale);
// Change model transformation
((TransformGroup)getChild(0)).setTransform(pieceTransform);
}
/**
* Returns the 3D model of this piece that fits
* in a 1 unit wide box centered at the origin.
*/
private Node getModelNode() {
PieceOfFurniture piece = (PieceOfFurniture)getUserData();
Reader modelReader = null;
try {
// Read piece model from a object file
modelReader = new InputStreamReader(piece.getModel().openStream());
ObjectFile loader = new ObjectFile();
Scene scene = loader.load(modelReader);
// Get model bounding box size
BranchGroup modelScene = scene.getSceneGroup();
BoundingBox modelBounds = getBounds(modelScene);
Point3d lower = new Point3d();
modelBounds.getLower(lower);
Point3d upper = new Point3d();
modelBounds.getUpper(upper);
// Translate model to its center
Transform3D translation = new Transform3D();
translation.setTranslation(
new Vector3d(-lower.x - (upper.x - lower.x) / 2,
-lower.y - (upper.y - lower.y) / 2,
-lower.z - (upper.z - lower.z) / 2));
// Scale model to make it fit in a 1 unit wide box
Transform3D modelTransform = new Transform3D();
modelTransform.setScale (
new Vector3d(1 / (upper.x -lower.x),
1 / (upper.y - lower.y),
1 / (upper.z - lower.z)));
modelTransform.mul(translation);
// Add model scene to transform group
TransformGroup modelTransformGroup =
new TransformGroup(modelTransform);
modelTransformGroup.addChild(modelScene);
return modelTransformGroup;
} catch (IOException ex) {
// In case of problem return a default box
return getModelBox(Color.RED);
} catch (IncorrectFormatException ex) {
return getModelBox(Color.RED);
} catch (ParsingErrorException ex) {
return getModelBox(Color.RED);
} finally {
try {
if (modelReader != null) {
modelReader.close();
}
} catch (IOException ex) {
throw new RuntimeException(ex);
}
}
}
/**
* Returns a box that may replace model.
*/
private Node getModelBox(Color color) {
Material material = new Material();
material.setDiffuseColor(new Color3f(color));
material.setAmbientColor(new Color3f(color.darker()));
Appearance boxAppearance = new Appearance();
boxAppearance.setMaterial(material);
return new Box(0.5f, 0.5f, 0.5f, boxAppearance);
}
/**
* Returns the bounds of 3D shapes under <code>node</code>.
* This method computes the exact box that contains all the shapes,
* contrary to <code>node.getBounds()</code> that returns a bounding
* sphere for a scene.
*/
private BoundingBox getBounds(Node node) {
BoundingBox objectBounds = new BoundingBox(
new Point3d(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY),
new Point3d(Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY));
computeBounds(node, objectBounds);
return objectBounds;
}
private void computeBounds(Node node, BoundingBox bounds) {
if (node instanceof Group) {
// Compute the bounds of all the node children
Enumeration enumeration = ((Group)node).getAllChildren();
while (enumeration.hasMoreElements ()) {
computeBounds((Node)enumeration.nextElement (), bounds);
}
} else if (node instanceof Shape3D) {
Bounds shapeBounds = ((Shape3D)node).getBounds();
bounds.combine(shapeBounds);
}
}
}
} |
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