transforminterpolator.html

JAVA多媒体开发类库说明

<DL>
<DT><B>Parameters:</B><DD><CODE>alpha</CODE> - the alpha object for this interpolator<DD><CODE>target</CODE> - the transformGroup node affected by this transformInterpolator<DD><CODE>axisOfTransform</CODE> - the transform that defines the local coordinate
 system in which this interpolator operates.</DL>
</DL>

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<B>Method Detail</B></FONT></TH>
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<A NAME="setTarget(javax.media.j3d.TransformGroup)"><!-- --></A><H3>
setTarget</H3>
<PRE>
public void <B>setTarget</B>(<A HREF="../../../javax/media/j3d/TransformGroup.html" title="class in javax.media.j3d">TransformGroup</A>&nbsp;target)</PRE>
<DL>
<DD>This method sets the target TransformGroup node for this 
 interpolator.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - The target TransformGroup</DL>
</DD>
</DL>
<HR>

<A NAME="getTarget()"><!-- --></A><H3>
getTarget</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/TransformGroup.html" title="class in javax.media.j3d">TransformGroup</A> <B>getTarget</B>()</PRE>
<DL>
<DD>This method retrieves this interpolator's TransformGroup
 node reference.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the Interpolator's target TransformGroup</DL>
</DD>
</DL>
<HR>

<A NAME="setTransformAxis(javax.media.j3d.Transform3D)"><!-- --></A><H3>
setTransformAxis</H3>
<PRE>
public void <B>setTransformAxis</B>(<A HREF="../../../javax/media/j3d/Transform3D.html" title="class in javax.media.j3d">Transform3D</A>&nbsp;axisOfTransform)</PRE>
<DL>
<DD>This method sets the axis of transform for this interpolator.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>axisOfTransform</CODE> - the transform that defines the local coordinate
 system in which this interpolator operates</DL>
</DD>
</DL>
<HR>

<A NAME="getTransformAxis()"><!-- --></A><H3>
getTransformAxis</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/Transform3D.html" title="class in javax.media.j3d">Transform3D</A> <B>getTransformAxis</B>()</PRE>
<DL>
<DD>This method retrieves this interpolator's axis of transform.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the interpolator's axis of transform</DL>
</DD>
</DL>
<HR>

<A NAME="computeTransform(float, javax.media.j3d.Transform3D)"><!-- --></A><H3>
computeTransform</H3>
<PRE>
public abstract void <B>computeTransform</B>(float&nbsp;alphaValue,
                                      <A HREF="../../../javax/media/j3d/Transform3D.html" title="class in javax.media.j3d">Transform3D</A>&nbsp;transform)</PRE>
<DL>
<DD>Computes the new transform for this interpolator for a given
 alpha value.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>alphaValue</CODE> - alpha value between 0.0 and 1.0<DD><CODE>transform</CODE> - object that receives the computed transform for
 the specified alpha value</DL>
</DD>
</DL>
<HR>

<A NAME="processStimulus(java.util.Enumeration)"><!-- --></A><H3>
processStimulus</H3>
<PRE>
public void <B>processStimulus</B>(java.util.Enumeration&nbsp;criteria)</PRE>
<DL>
<DD>This method is invoked by the behavior scheduler every frame.
 First it gets the alpha value that corresponds to the current time.
 Then it calls computeTransform() method to computes the transform based on this
 alpha vaule,  and updates the specified TransformGroup node with this new transform.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../javax/media/j3d/Behavior.html#processStimulus(java.util.Enumeration)">processStimulus</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/Behavior.html" title="class in javax.media.j3d">Behavior</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>criteria</CODE> - an enumeration of the criteria that caused the
 stimulus</DL>
</DD>
</DL>
<HR>

<A NAME="updateNodeReferences(javax.media.j3d.NodeReferenceTable)"><!-- --></A><H3>
updateNodeReferences</H3>
<PRE>
public void <B>updateNodeReferences</B>(<A HREF="../../../javax/media/j3d/NodeReferenceTable.html" title="class in javax.media.j3d">NodeReferenceTable</A>&nbsp;referenceTable)</PRE>
<DL>
<DD>Callback used to allow a node to check if any scene graph objects
 referenced
 by that node have been duplicated via a call to <code>cloneTree</code>.
 This method is called by <code>cloneTree</code> after all nodes in
 the sub-graph have been duplicated. The cloned Leaf node's method
 will be called and the Leaf node can then look up any object references
 by using the <code>getNewObjectReference</code> method found in the
 <code>NodeReferenceTable</code> object.  If a match is found, a
 reference to the corresponding object in the newly cloned sub-graph
 is returned.  If no corresponding reference is found, either a
 DanglingReferenceException is thrown or a reference to the original
 object is returned depending on the value of the
 <code>allowDanglingReferences</code> parameter passed in the
 <code>cloneTree</code> call.
 <p>
 NOTE: Applications should <i>not</i> call this method directly.
 It should only be called by the cloneTree method.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/media/j3d/Behavior.html#updateNodeReferences(javax.media.j3d.NodeReferenceTable)">updateNodeReferences</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/Behavior.html" title="class in javax.media.j3d">Behavior</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>referenceTable</CODE> - a NodeReferenceTableObject that contains the
  <code>getNewObjectReference</code> method needed to search for
  new object instances.<DT><B>See Also:</B><DD><A HREF="../../../javax/media/j3d/NodeReferenceTable.html" title="class in javax.media.j3d"><CODE>NodeReferenceTable</CODE></A>, 
<A HREF="../../../javax/media/j3d/Node.html#cloneTree()"><CODE>Node.cloneTree()</CODE></A>, 
<A HREF="../../../javax/media/j3d/DanglingReferenceException.html" title="class in javax.media.j3d"><CODE>DanglingReferenceException</CODE></A></DL>
</DD>
</DL>
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