javax.media.j3d
Class RotationInterpolator

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.RotationInterpolator

public class RotationInterpolator
extends TransformInterpolator

Rotation interpolator behavior. This class defines a behavior that modifies the rotational component of its target TransformGroup by linearly interpolating between a pair of specified angles (using the value generated by the specified Alpha object). The interpolated angle is used to generate a rotation transform about the local Y-axis of this interpolator.

Field Summary

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

Constructor Summary

RotationInterpolator(Alpha alpha, TransformGroup target)
Constructs a trivial rotation interpolator with a specified target, an default axisOfTranform set to identity, a minimum angle of 0.0f, and a maximum angle of 2*pi radians.

RotationInterpolator(Alpha alpha, TransformGroup target, Transform3D axisOfTransform, float minimumAngle, float maximumAngle)
Constructs a new rotation interpolator that varies the target transform node's rotational component.

Method Summary

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.
Transform3D	getAxisOfRotation() Deprecated. As of Java 3D version 1.3, replaced by TransformInterpolator.getTransformAxis()
float	getMaximumAngle() This method retrieves this interpolator's maximumAngle, in radians.
float	getMinimumAngle() This method retrieves this interpolator's minimumAngle, in radians.
void	setAxisOfRotation(Transform3D axisOfRotation) Deprecated. As of Java 3D version 1.3, replaced by TransformInterpolator.setTransformAxis(Transform3D)
void	setMaximumAngle(float angle) This method sets the maximumAngle for this interpolator, in radians.
void	setMinimumAngle(float angle) This method sets the minimumAngle for this interpolator, in radians.

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

getEnable, getNumSchedulingIntervals, getSchedulingBoundingLeaf, getSchedulingBounds, getSchedulingInterval, postId, setEnable, setSchedulingBoundingLeaf, setSchedulingBounds, setSchedulingInterval

Methods inherited from class javax.media.j3d.Node

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

clearCapability, clearCapabilityIsFrequent, getCapability, getCapabilityIsFrequent, getName, getUserData, isCompiled, isLive, setCapability, setCapabilityIsFrequent, setName, setUserData, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RotationInterpolator

public RotationInterpolator(Alpha alpha,
                            TransformGroup target)

Constructs a trivial rotation interpolator with a specified target, an default axisOfTranform set to identity, a minimum angle of 0.0f, and a maximum angle of 2*pi radians.

Parameters:

alpha - The alpha object for this Interpolator

target - The target for this rotation Interpolator

RotationInterpolator

public RotationInterpolator(Alpha alpha,
                            TransformGroup target,
                            Transform3D axisOfTransform,
                            float minimumAngle,
                            float maximumAngle)

Constructs a new rotation interpolator that varies the target transform node's rotational component.

Parameters:

alpha - the alpha generator to use in the rotation computation

target - the TransformGroup node affected by this interpolator

axisOfTransform - the transform that defines the local coordinate system in which this interpolator operates. The rotation is done about the Y-axis of this local coordinate system.

minimumAngle - the starting angle in radians

maximumAngle - the ending angle in radians

Method Detail

setMinimumAngle

public void setMinimumAngle(float angle)

This method sets the minimumAngle for this interpolator, in radians.

Parameters:

angle - the new minimal angle

getMinimumAngle

public float getMinimumAngle()

This method retrieves this interpolator's minimumAngle, in radians.

Returns:

the interpolator's minimal angle value

setMaximumAngle

public void setMaximumAngle(float angle)

This method sets the maximumAngle for this interpolator, in radians.

Parameters:

angle - the new maximal angle value

getMaximumAngle

public float getMaximumAngle()

This method retrieves this interpolator's maximumAngle, in radians.

Returns:

the interpolator's maximal angle value

setAxisOfRotation

public void setAxisOfRotation(Transform3D axisOfRotation)

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

getAxisOfRotation

public Transform3D getAxisOfRotation()

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)