Package javax.media.j3d
Class RotationPathInterpolator
RotationPathInterpolator behavior. This class defines a behavior
that varies the rotational component of its target TransformGroup
by linearly interpolating among a series of predefined knot/orientation
pairs (using the value generated by the specified Alpha object). The
interpolated orientation is used to generate a rotation transform in
the local coordinate system. The first knot must have a value of 0.0.
The last knot must have a value
of 1.0. An intermediate knot with index k must have a value strictly
greater than any knot with index less than k.
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Field Summary
Fields inherited from class javax.media.j3d.PathInterpolator
currentInterpolationValue, currentKnotIndex
Fields inherited from class javax.media.j3d.TransformInterpolator
axis, axisInverse, target
Fields inherited from class javax.media.j3d.Interpolator
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
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Constructor Summary
ConstructorsConstructorDescriptionRotationPathInterpolator
(Alpha alpha, TransformGroup target, Transform3D axisOfTransform, float[] knots, javax.vecmath.Quat4f[] quats) Constructs a new RotationPathInterpolator object that varies the target TransformGroup node's transform. -
Method Summary
Modifier and TypeMethodDescriptioncloneNode
(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.Deprecated.void
getQuat
(int index, javax.vecmath.Quat4f quat) Retrieves the quat value at the specified index.void
getQuats
(javax.vecmath.Quat4f[] quats) Copies the array of quaternion values from this interpolator into the specified array.void
setAxisOfRotation
(Transform3D axisOfRotation) Deprecated.As of Java 3D version 1.3, replaced byTransformInterpolator.seTransformAxis(Transform3D)
void
setPathArrays
(float[] knots, javax.vecmath.Quat4f[] quats) Replaces the existing arrays of knot values and quaternion values with the specified arrays.void
setQuat
(int index, javax.vecmath.Quat4f quat) Sets the quat value at the specified index for this interpolator.Methods inherited from class javax.media.j3d.PathInterpolator
computePathInterpolation, computePathInterpolation, getArrayLengths, getKnot, getKnots, setKnot, setKnots
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, getView, getWakeupCondition, postId, setEnable, setSchedulingBoundingLeaf, setSchedulingBounds, setSchedulingInterval, wakeupOn
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, duplicateSceneGraphObject, getCapability, getCapabilityIsFrequent, getName, getUserData, isCompiled, isLive, setCapability, setCapabilityIsFrequent, setName, setUserData, toString
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Constructor Details
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RotationPathInterpolator
public RotationPathInterpolator(Alpha alpha, TransformGroup target, Transform3D axisOfTransform, float[] knots, javax.vecmath.Quat4f[] quats) Constructs a new RotationPathInterpolator object that varies the target TransformGroup node's transform.- Parameters:
alpha
- the alpha object of this interpolatortarget
- the TransformGroup node affected by this interpolatoraxisOfTransform
- the transform that defines the local coordinate system in which this interpolator operatesknots
- an array of knot values that specify interpolation pointsquats
- an array of quaternion values at the knots- Throws:
IllegalArgumentException
- if the lengths of the knots and quats arrays are not the same.
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Method Details
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setQuat
public void setQuat(int index, javax.vecmath.Quat4f quat) Sets the quat value at the specified index for this interpolator.- Parameters:
index
- the index to be changedquat
- the new quat value at the index
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getQuat
public void getQuat(int index, javax.vecmath.Quat4f quat) Retrieves the quat value at the specified index.- Parameters:
index
- the index of the value requestedquat
- the quat object that will have the quat value at index copied into it.
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setPathArrays
public void setPathArrays(float[] knots, javax.vecmath.Quat4f[] quats) Replaces the existing arrays of knot values and quaternion values with the specified arrays. The arrays of knots and quats are copied into this interpolator object.- Parameters:
knots
- a new array of knot values that specify interpolation pointsquats
- a new array of quaternion values at the knots- Throws:
IllegalArgumentException
- if the lengths of the knots and quats arrays are not the same.- Since:
- Java 3D 1.2
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getQuats
public void getQuats(javax.vecmath.Quat4f[] quats) Copies the array of quaternion values from this interpolator into the specified array. The array must be large enough to hold all of the quats. The individual array elements must be allocated by the caller.- Parameters:
quats
- array that will receive the quats- Since:
- Java 3D 1.2
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setAxisOfRotation
Deprecated.As of Java 3D version 1.3, replaced byTransformInterpolator.seTransformAxis(Transform3D)
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getAxisOfRotation
Deprecated.As of Java 3D version 1.3, replaced byTransformInterpolator.getTransformAxis()
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computeTransform
Computes the new transform for this interpolator for a given alpha value.- Specified by:
computeTransform
in classTransformInterpolator
- Parameters:
alphaValue
- alpha value between 0.0 and 1.0transform
- object that receives the computed transform for the specified alpha value- Since:
- Java 3D 1.3
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cloneNode
Used to create a new instance of the node. This routine is called bycloneTree
to duplicate the current node.
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TransformInterpolator.getTransformAxis()