javax.media.j3d

Class ScaleInterpolator

java.lang.Object

javax.media.j3d.SceneGraphObject

javax.media.j3d.Node

javax.media.j3d.Leaf

javax.media.j3d.Behavior

javax.media.j3d.Interpolator

javax.media.j3d.TransformInterpolator

javax.media.j3d.ScaleInterpolator

public class ScaleInterpolator
extends TransformInterpolator

Scale interpolation behavior. This class defines a behavior that modifies the uniform scale component of its target TransformGroup by linearly interpolating between a pair of specified scale values (using the value generated by the specified Alpha object). The interpolated scale value is used to generate a scale transform in the local coordinate system of this interpolator.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) float	maximumScale
(package private) float	minimumScale
private WakeupCriterion	passiveWakeupCriterion
private float	prevAlphaValue
private Transform3D	scale

Fields inherited from class javax.media.j3d.TransformInterpolator

axis, axisInverse, target

Fields inherited from class javax.media.j3d.Interpolator

alpha, defaultWakeupCriterion

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_LOCALE_READ, ALLOW_PARENT_READ, ALLOW_PICKABLE_READ, ALLOW_PICKABLE_WRITE, ENABLE_COLLISION_REPORTING, ENABLE_PICK_REPORTING

Fields inherited from class javax.media.j3d.SceneGraphObject

nodeHashtable, retained

Constructor Summary

Constructors

Constructor and Description
ScaleInterpolator()
ScaleInterpolator(Alpha alpha, TransformGroup target) Constructs a trivial scale interpolator that varies its target TransformGroup node between the two specified alpha values using the specified alpha, an identity matrix, a minimum scale = 0.1f, and a maximum scale = 1.0f.
ScaleInterpolator(Alpha alpha, TransformGroup target, Transform3D axisOfTransform, float minimumScale, float maximumScale) Constructs a new scaleInterpolator object that varies its target TransformGroup node's scale component between two scale values (minimumScale and maximumScale).

Method Summary

Methods

Modifier and Type	Method and Description
Node	cloneNode(boolean forceDuplicate) Used to create a new instance of the node.
void	computeTransform(float alphaValue, Transform3D transform) Computes the new transform for this interpolator for a given alpha value.
(package private) void	duplicateAttributes(Node originalNode, boolean forceDuplicate) Copies all ScaleInterpolator information from originalNode into the current node.
Transform3D	getAxisOfScale() Deprecated. As of Java 3D version 1.3, replaced by TransformInterpolator.getTransformAxis()
float	getMaximumScale() This method retrieves this interpolator's maximumScale.
float	getMinimumScale() This method retrieves this interpolator's minimumScale.
void	setAxisOfScale(Transform3D axisOfScale) Deprecated. As of Java 3D version 1.3, replaced by TransformInterpolator.setTransformAxis(Transform3D)
void	setMaximumScale(float scale) This method sets the maximumScale for this interpolator.
void	setMinimumScale(float scale) This method sets the minimumScale for this interpolator.

Methods inherited from class javax.media.j3d.TransformInterpolator

getTarget, getTransformAxis, processStimulus, setTarget, setTransformAxis, updateNodeReferences

Methods inherited from class javax.media.j3d.Interpolator

getAlpha, initialize, setAlpha

Methods inherited from class javax.media.j3d.Behavior

createRetained, getEnable, getNumSchedulingIntervals, getSchedulingBoundingLeaf, getSchedulingBounds, getSchedulingInterval, getView, getWakeupCondition, postId, setEnable, setSchedulingBoundingLeaf, setSchedulingBounds, setSchedulingInterval, wakeupOn

Methods inherited from class javax.media.j3d.Node

checkDuplicateNode, checkForCycle, cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, cloneTree, duplicateNode, getBounds, getBoundsAutoCompute, getCollidable, getLocale, getLocalToVworld, getLocalToVworld, getParent, getPickable, setBounds, setBoundsAutoCompute, setCollidable, setPickable

Methods inherited from class javax.media.j3d.SceneGraphObject

capabilityBitsEmpty, checkForLiveOrCompiled, clearCapability, clearCapabilityIsFrequent, clearLive, duplicateSceneGraphObject, getCapability, getCapabilityIsFrequent, getName, getNamePrefix, getNodeComponent, getUserData, isCompiled, isLive, isLiveOrCompiled, setCapability, setCapabilityIsFrequent, setCompiled, setDefaultReadCapabilities, setLive, setName, setUserData, toString

Methods inherited from class java.lang.Object

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

Field Detail

minimumScale

float minimumScale

maximumScale

float maximumScale

scale

private Transform3D scale

prevAlphaValue

private float prevAlphaValue

passiveWakeupCriterion

private WakeupCriterion passiveWakeupCriterion

Constructor Detail

ScaleInterpolator

ScaleInterpolator()

ScaleInterpolator

public ScaleInterpolator(Alpha alpha,
                 TransformGroup target)

Constructs a trivial scale interpolator that varies its target TransformGroup node between the two specified alpha values using the specified alpha, an identity matrix, a minimum scale = 0.1f, and a maximum scale = 1.0f.

Parameters:

alpha - the alpha object for this interpolator

target - the TransformGroup node affected by this interpolator

ScaleInterpolator

public ScaleInterpolator(Alpha alpha,
                 TransformGroup target,
                 Transform3D axisOfTransform,
                 float minimumScale,
                 float maximumScale)

Constructs a new scaleInterpolator object that varies its target TransformGroup node's scale component between two scale values (minimumScale and maximumScale).

Parameters:

alpha - the alpha object for this interpolator

target - the TransformGroup node affected by this interpolator

axisOfTransform - the transform that defines the local coordinate system in which this interpolator operates; the scale is done about the origin of this local coordinate system.

minimumScale - the starting scale

maximumScale - the ending scale

Method Detail

setMinimumScale

public void setMinimumScale(float scale)

This method sets the minimumScale for this interpolator.

Parameters:

scale - The new minimal scale

getMinimumScale

public float getMinimumScale()

This method retrieves this interpolator's minimumScale.

Returns:

the interpolator's minimal scale value

setMaximumScale

public void setMaximumScale(float scale)

This method sets the maximumScale for this interpolator.

Parameters:

scale - the new maximum scale

getMaximumScale

public float getMaximumScale()

This method retrieves this interpolator's maximumScale.

Returns:

the interpolator's maximum scale vslue

setAxisOfScale

public void setAxisOfScale(Transform3D axisOfScale)

Deprecated. As of Java 3D version 1.3, replaced by TransformInterpolator.setTransformAxis(Transform3D)

getAxisOfScale

public Transform3D getAxisOfScale()

Deprecated. As of Java 3D version 1.3, replaced by TransformInterpolator.getTransformAxis()

computeTransform

public void computeTransform(float alphaValue,
                    Transform3D transform)

Computes the new transform for this interpolator for a given alpha value.

Specified by:

computeTransform in class TransformInterpolator

Parameters:

alphaValue - alpha value between 0.0 and 1.0

transform - object that receives the computed transform for the specified alpha value

Since:

Java 3D 1.3

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.

Overrides:

cloneNode in class Node

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

duplicateAttributes

void duplicateAttributes(Node originalNode,
                       boolean forceDuplicate)

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

Overrides:

duplicateAttributes in class TransformInterpolator

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.

Throws:

RestrictedAccessException - if this object is part of a live or compiled scenegraph.

See Also:

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