com.sun.j3d.utils.geometry
Class Box

java.lang.Object
  |
  +--javax.media.j3d.SceneGraphObject
        |
        +--javax.media.j3d.Node
              |
              +--javax.media.j3d.Group
                    |
                    +--com.sun.j3d.utils.geometry.Primitive
                          |
                          +--com.sun.j3d.utils.geometry.Box

public class Box

extends Primitive

Box is a geometry primitive created with a given length, width, and height. It is centered at the origin. By default, it lies within the bounding box, [-1,-1,-1] and [1,1,1]. When a texture is applied to a box, it is map CCW like on a Cylinder. A texture is mapped CCW from the back of the body. The top and bottom faces are mapped such that the texture appears front facing when the faces are rotated 90 toward the viewer.

By default all primitives with the same parameters share their geometry (e.g., you can have 50 shperes in your scene, but the geometry is stored only once). A change to one primitive will effect all shared nodes. Another implication of this implementation is that the capabilities of the geometry are shared, and once one of the shared nodes is live, the capabilities cannot be set. Use the GEOMETRY_NOT_SHARED flag if you do not wish to share geometry among primitives with the same parameters.

Field Summary

static int	BACK Used to designate the back side of the box when using getShape().
static int	BOTTOM Used to designate the bottom side of the box when using getShape().
static int	FRONT Used to designate the front side of the box when using getShape().
static int	LEFT Used to designate the left side of the box when using getShape().
static int	RIGHT Used to designate the right side of the box when using getShape().
static int	TOP Used to designate the top side of the box when using getShape().

Fields inherited from class com.sun.j3d.utils.geometry.Primitive

ENABLE_APPEARANCE_MODIFY, ENABLE_GEOMETRY_PICKING, GENERATE_NORMALS, GENERATE_NORMALS_INWARD, GENERATE_TEXTURE_COORDS, GEOMETRY_NOT_SHARED

Fields inherited from class javax.media.j3d.Group

ALLOW_CHILDREN_EXTEND, ALLOW_CHILDREN_READ, ALLOW_CHILDREN_WRITE, ALLOW_COLLISION_BOUNDS_READ, ALLOW_COLLISION_BOUNDS_WRITE

Fields inherited from class javax.media.j3d.Node

ALLOW_AUTO_COMPUTE_BOUNDS_READ, ALLOW_AUTO_COMPUTE_BOUNDS_WRITE, ALLOW_BOUNDS_READ, ALLOW_BOUNDS_WRITE, ALLOW_COLLIDABLE_READ, ALLOW_COLLIDABLE_WRITE, ALLOW_LOCAL_TO_VWORLD_READ, ALLOW_PICKABLE_READ, ALLOW_PICKABLE_WRITE, ENABLE_COLLISION_REPORTING, ENABLE_PICK_REPORTING

Constructor Summary

Box()
Constructs a default box of 1.0 in all dimensions.

Box(float xdim, float ydim, float zdim, Appearance ap)
Constructs a box of a given dimension and appearance.

Box(float xdim, float ydim, float zdim, int primflags, Appearance ap)

Box(float xdim, float ydim, float zdim, int primflags, Appearance ap, int numTexUnit)
Constructs a box of a given dimension, flags, and appearance.

Method Summary

Node	cloneNode(boolean forceDuplicate) Used to create a new instance of the node.
void	duplicateNode(Node originalNode, boolean forceDuplicate) Copies all node information from originalNode into the current node.
Appearance	getAppearance(int partId) Gets the appearance of the specified part of the box.
Shape3D	getShape(int partId) Gets one of the faces (Shape3D) from the box that contains the geometry and appearance.
float	getXdimension() Returns the X-dimension size of the Box
float	getYdimension() Returns the Y-dimension size of the Box
float	getZdimension() Returns the Z-dimension size of the Box
void	setAppearance(Appearance ap) Sets appearance of the box.

Methods inherited from class com.sun.j3d.utils.geometry.Primitive

cacheGeometry, getAppearance, getCachedGeometry, getNumTriangles, getNumVertices, getPrimitiveFlags, setAppearance, setAppearance, setNumTriangles, setNumVertices, setPrimitiveFlags

Methods inherited from class javax.media.j3d.Group

addChild, getAllChildren, getAlternateCollisionTarget, getChild, getCollisionBounds, indexOfChild, insertChild, moveTo, numChildren, removeAllChildren, removeChild, removeChild, setAlternateCollisionTarget, setChild, setCollisionBounds

Methods inherited from class javax.media.j3d.Node

cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, getBounds, getBoundsAutoCompute, getCollidable, getLocalToVworld, getLocalToVworld, getParent, getPickable, setBounds, setBoundsAutoCompute, setCollidable, setPickable

Methods inherited from class javax.media.j3d.SceneGraphObject

clearCapability, clearCapabilityIsFrequent, duplicateSceneGraphObject, getCapability, getCapabilityIsFrequent, getUserData, isCompiled, isLive, setCapability, setCapabilityIsFrequent, setUserData, updateNodeReferences

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FRONT

public static final int FRONT

Used to designate the front side of the box when using getShape().

See Also:

getShape(int), Constant Field Values

BACK

public static final int BACK

Used to designate the back side of the box when using getShape().

See Also:

getShape(int), Constant Field Values

RIGHT

public static final int RIGHT

Used to designate the right side of the box when using getShape().

See Also:

getShape(int), Constant Field Values

LEFT

public static final int LEFT

Used to designate the left side of the box when using getShape().

See Also:

getShape(int), Constant Field Values

TOP

public static final int TOP

Used to designate the top side of the box when using getShape().

See Also:

getShape(int), Constant Field Values

BOTTOM

public static final int BOTTOM

Used to designate the bottom side of the box when using getShape().

See Also:

getShape(int), Constant Field Values

Constructor Detail

Box

public Box()

Constructs a default box of 1.0 in all dimensions. Normals are generated by default, texture coordinates are not.

Box

public Box(float xdim,
           float ydim,
           float zdim,
           Appearance ap)

Constructs a box of a given dimension and appearance. Normals are generated by default, texture coordinates are not.

Parameters:

xdim - X-dimension size.

ydim - Y-dimension size.

zdim - Z-dimension size.

ap - Appearance

Box

public Box(float xdim,
           float ydim,
           float zdim,
           int primflags,
           Appearance ap,
           int numTexUnit)

Constructs a box of a given dimension, flags, and appearance.

Parameters:

xdim - X-dimension size.

ydim - Y-dimension size.

zdim - Z-dimension size.

primflags - primitive flags.

ap - Appearance

Box

public Box(float xdim,
           float ydim,
           float zdim,
           int primflags,
           Appearance ap)

Method Detail

getShape

public Shape3D getShape(int partId)

Gets one of the faces (Shape3D) from the box that contains the geometry and appearance. This allows users to modify the appearance or geometry of individual parts.

Specified by:

getShape in class Primitive

Parameters:

partId - The part to return.

Returns:

The Shape3D object associated with the partID. If an invalid partId is passed in, null is returned.

setAppearance

public void setAppearance(Appearance ap)

Sets appearance of the box. This will set each face of the box to the same appearance. To set each face's appearance separately, use getShape(partId) to get the individual shape and call shape.setAppearance(ap).

Specified by:

setAppearance in class Primitive

getAppearance

public Appearance getAppearance(int partId)

Gets the appearance of the specified part of the box.

Specified by:

getAppearance in class Primitive

Returns:

The appearance object associated with the partID. If an invalid partId is passed in, null is returned.

Since:

Java 3D 1.2.1

cloneNode

public Node cloneNode(boolean forceDuplicate)

Used to create a new instance of the node. This routine is called by cloneTree to duplicate the current node. cloneNode should be overridden by any user subclassed objects. All subclasses must have their cloneNode method consist of the following lines:

     public Node cloneNode(boolean forceDuplicate) {
         UserSubClass usc = new UserSubClass();
         usc.duplicateNode(this, forceDuplicate);
         return usc;
     }
 

Overrides:

cloneNode in class Group

Parameters:

forceDuplicate - when set to true, causes the duplicateOnCloneTree flag to be ignored. When false, the value of each node's duplicateOnCloneTree variable determines whether NodeComponent data is duplicated or copied.

See Also:

Node.cloneTree(), Node.duplicateNode(javax.media.j3d.Node, boolean), NodeComponent.setDuplicateOnCloneTree(boolean)

duplicateNode

public void duplicateNode(Node originalNode,
                          boolean forceDuplicate)

Copies all node information from originalNode into the current node. This method is called from the cloneNode method which is, in turn, called by the cloneTree method.

For any NodeComponent objects contained by the object being duplicated, each NodeComponent object's duplicateOnCloneTree value is used to determine whether the NodeComponent should be duplicated in the new node or if just a reference to the current node should be placed in the new node. This flag can be overridden by setting the forceDuplicate parameter in the cloneTree method to true.

Overrides:

duplicateNode in class Node

Parameters:

originalNode - the original node to duplicate.

forceDuplicate - when set to true, causes the duplicateOnCloneTree flag to be ignored. When false, the value of each node's duplicateOnCloneTree variable determines whether NodeComponent data is duplicated or copied.

See Also:

Node.cloneTree(), Node.cloneNode(boolean), NodeComponent.setDuplicateOnCloneTree(boolean)

getXdimension

public float getXdimension()

Returns the X-dimension size of the Box

Since:

Java 3D 1.2.1

getYdimension

public float getYdimension()

Returns the Y-dimension size of the Box

Since:

Java 3D 1.2.1

getZdimension

public float getZdimension()

Returns the Z-dimension size of the Box

Since:

Java 3D 1.2.1