Package javax.media.j3d

Class RotPosPathInterpolator

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

  • Constructor Details

    • RotPosPathInterpolator

      public RotPosPathInterpolator(Alpha alpha, TransformGroup target, Transform3D axisOfTransform, float[] knots, javax.vecmath.Quat4f[] quats, javax.vecmath.Point3f[] positions)
      Constructs a new interpolator that varies the rotation and translation of the target TransformGroup's transform.
      Parameters:
      alpha - the alpha object for this interpolator
      target - the TransformGroup node affected by this translator
      axisOfTransform - the transform that defines 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.
      Throws:
      IllegalArgumentException - if the lengths of the knots, quats, and positions arrays are not all the same.

  • Method Details

    • setQuat

      public void setQuat(int index, javax.vecmath.Quat4f quat)
      Sets the quat at the specified index for this interpolator.
      Parameters:
      index - the index to be changed
      quat - the new quat value

    • 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 - the quat to receive the quat value at the index

    • setPosition

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

    • 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 - the position to receive the position value at the index

    • setPathArrays

      public void setPathArrays(float[] knots, javax.vecmath.Quat4f[] quats, javax.vecmath.Point3f[] positions)
      Replaces the existing arrays of knot values, quaternion values, and position values with the specified arrays. The arrays of knots, quats, and positions 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.
      Throws:
      IllegalArgumentException - if the lengths of the knots, quats, and positions 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

    • setAxisOfRotPos

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

    • getAxisOfRotPos

      public Transform3D getAxisOfRotPos()
      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: