Package javax.media.j3d

Class RotPosScalePathInterpolator

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.PathInterpolator
javax.media.j3d.RotPosScalePathInterpolator
public class RotPosScalePathInterpolator extends PathInterpolator
RotPosScalePathInterpolation behavior. This class defines a behavior that varies the rotational, translational, and scale components of its target TransformGroup by linearly interpolating among a series of predefined knot/position, knot/orientation, and knot/scale pairs (using the value generated by the specified Alpha object). The interpolated position, orientation, and scale are used to generate a transform in the local coordinate system of this interpolator. 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.

  • Constructor Details

    • RotPosScalePathInterpolator

      public RotPosScalePathInterpolator(Alpha alpha, TransformGroup target, Transform3D axisOfTransform, float[] knots, javax.vecmath.Quat4f[] quats, javax.vecmath.Point3f[] positions, float[] scales)
      Constructs a new RotPosScalePathInterpolator object that varies the rotation, translation, and scale of the target TransformGroup's transform.
      Parameters:
      alpha - the alpha object for this interpolator.
      target - the TransformGroup node affected by this interpolator.
      axisOfTransform - the transform that specifies the local coordinate system in which this interpolator operates.
      knots - an array of knot values that specify interpolation points.
      quats - an array of quaternion values at the knots.
      positions - an array of position values at the knots.
      scales - an array of scale component values at the knots.
      Throws:
      IllegalArgumentException - if the lengths of the knots, quats, positions, and scales arrays are not all the same.

  • Method Details

    • 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 changed
      quat - the new quat value at index

    • 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 requested
      quat - returns the interpolator's quat value at the index

    • setPosition

      public void setPosition(int index, javax.vecmath.Point3f position)
      Sets the position value at the specified index for this interpolator.
      Parameters:
      index - the index to be changed
      position - the new position value at index

    • getPosition

      public void getPosition(int index, javax.vecmath.Point3f position)
      Retrieves the position value at the specified index.
      Parameters:
      index - the index of the value requested
      position - returns the interpolator's position value at the index

    • setScale

      public void setScale(int index, float scale)
      Sets the scale at the specified index for this interpolator.
      Parameters:
      index - the index to be changed
      scale - the new scale at index

    • getScale

      public float getScale(int index)
      Retrieves the scale at the specified index.
      Parameters:
      index - the index of the value requested
      Returns:
      the interpolator's scale value at index

    • setPathArrays

      public void setPathArrays(float[] knots, javax.vecmath.Quat4f[] quats, javax.vecmath.Point3f[] positions, float[] scales)
      Replaces the existing arrays of knot values, quaternion values, position values, and scale values with the specified arrays. The arrays of knots, quats, positions, and scales are copied into this interpolator object.
      Parameters:
      knots - a new array of knot values that specify interpolation points.
      quats - a new array of quaternion values at the knots.
      positions - a new array of position values at the knots.
      scales - a new array of scale component values at the knots.
      Throws:
      IllegalArgumentException - if the lengths of the knots, quats, positions, and scales arrays are not all the same.
      Since:
      Java 3D 1.2

    • 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

    • getPositions

      public void getPositions(javax.vecmath.Point3f[] positions)
      Copies the array of position values from this interpolator into the specified array. The array must be large enough to hold all of the positions. The individual array elements must be allocated by the caller.
      Parameters:
      positions - array that will receive the positions.
      Since:
      Java 3D 1.2

    • getScales

      public void getScales(float[] scales)
      Copies the array of scale values from this interpolator into the specified array. The array must be large enough to hold all of the scales.
      Parameters:
      scales - array that will receive the scales.
      Since:
      Java 3D 1.2

    • setAxisOfRotPosScale

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

    • getAxisOfRotPosScale

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

    • 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: