billboard.html

java 3d帮助文档

<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>axis</CODE> - the ray about which the billboard rotates</DL>
</DD>
</DL>
<HR>

<A NAME="setAlignmentAxis(float, float, float)"><!-- --></A><H3>
setAlignmentAxis</H3>
<PRE>
public void <B>setAlignmentAxis</B>(float&nbsp;x,
                             float&nbsp;y,
                             float&nbsp;z)</PRE>
<DL>
<DD>Sets the alignment axis.
 The specified axis must not be parallel to the <i>Z</i>
 axis--(0,0,<i>z</i>) for any value of <i>z</i>.  It is not
 possible for the +<i>Z</i> axis to point at the viewer's eye
 position by rotating about itself.  The target transform will
 be set to the identity if the axis is (0,0,<i>z</i>).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the x component of the ray about which the billboard rotates<DD><CODE>y</CODE> - the y component of the ray about which the billboard rotates<DD><CODE>z</CODE> - the z component of the ray about which the billboard rotates</DL>
</DD>
</DL>
<HR>

<A NAME="getAlignmentAxis(javax.vecmath.Vector3f)"><!-- --></A><H3>
getAlignmentAxis</H3>
<PRE>
public void <B>getAlignmentAxis</B>(<A HREF="../../../javax/vecmath/Vector3f.html">Vector3f</A>&nbsp;axis)</PRE>
<DL>
<DD>Gets the alignment axis and sets the parameter to this value.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>axis</CODE> - the vector that will contain the ray about which
 the billboard rotates</DL>
</DD>
</DL>
<HR>

<A NAME="setRotationPoint(javax.vecmath.Point3f)"><!-- --></A><H3>
setRotationPoint</H3>
<PRE>
public void <B>setRotationPoint</B>(<A HREF="../../../javax/vecmath/Point3f.html">Point3f</A>&nbsp;point)</PRE>
<DL>
<DD>Sets the rotation point.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point</CODE> - the point about which the billboard rotates</DL>
</DD>
</DL>
<HR>

<A NAME="setRotationPoint(float, float, float)"><!-- --></A><H3>
setRotationPoint</H3>
<PRE>
public void <B>setRotationPoint</B>(float&nbsp;x,
                             float&nbsp;y,
                             float&nbsp;z)</PRE>
<DL>
<DD>Sets the rotation point.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the x component of the point about which the billboard rotates<DD><CODE>y</CODE> - the y component of the point about which the billboard rotates<DD><CODE>z</CODE> - the z component of the point about which the billboard rotates</DL>
</DD>
</DL>
<HR>

<A NAME="getRotationPoint(javax.vecmath.Point3f)"><!-- --></A><H3>
getRotationPoint</H3>
<PRE>
public void <B>getRotationPoint</B>(<A HREF="../../../javax/vecmath/Point3f.html">Point3f</A>&nbsp;point)</PRE>
<DL>
<DD>Gets the rotation point and sets the parameter to this value.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point</CODE> - the position the Billboard rotates about</DL>
</DD>
</DL>
<HR>

<A NAME="setTarget(javax.media.j3d.TransformGroup)"><!-- --></A><H3>
setTarget</H3>
<PRE>
public void <B>setTarget</B>(<A HREF="../../../javax/media/j3d/TransformGroup.html">TransformGroup</A>&nbsp;tg)</PRE>
<DL>
<DD>Sets the tranformGroup for this Billboard object.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>tg</CODE> - the transformGroup node which replaces the current
 transformGroup node for this Billboard</DL>
</DD>
</DL>
<HR>

<A NAME="getTarget()"><!-- --></A><H3>
getTarget</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/TransformGroup.html">TransformGroup</A> <B>getTarget</B>()</PRE>
<DL>
<DD>Returns a copy of the transformGroup associated with this Billboard.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the TranformGroup for this Billboard</DL>
</DD>
</DL>
<HR>

<A NAME="initialize()"><!-- --></A><H3>
initialize</H3>
<PRE>
public void <B>initialize</B>()</PRE>
<DL>
<DD>Initialize method that sets up initial wakeup criteria.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../javax/media/j3d/Behavior.html#initialize()">initialize</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/Behavior.html">Behavior</A></CODE></DL>
</DD>
<DD><DL>
</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>Process stimulus method that computes appropriate 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">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="cloneNode(boolean)"><!-- --></A><H3>
cloneNode</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/Node.html">Node</A> <B>cloneNode</B>(boolean&nbsp;forceDuplicate)</PRE>
<DL>
<DD>Creates a new instance of the node.  This routine is called
 by <code>cloneTree</code> to duplicate the current node.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../javax/media/j3d/Node.html#cloneNode(boolean)">cloneNode</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/Node.html">Node</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>forceDuplicate</CODE> - when set to <code>true</code>, causes the
  <code>duplicateOnCloneTree</code> flag to be ignored.  When
  <code>false</code>, the value of each node's
  <code>duplicateOnCloneTree</code> variable determines whether
  NodeComponent data is duplicated or copied.<DT><B>See Also:</B><DD><A HREF="../../../javax/media/j3d/Node.html#cloneTree()"><CODE>Node.cloneTree()</CODE></A>, 
<A HREF="../../../javax/media/j3d/Node.html#cloneNode(boolean)"><CODE>Node.cloneNode(boolean)</CODE></A>, 
<A HREF="../../../javax/media/j3d/Node.html#duplicateNode(javax.media.j3d.Node, boolean)"><CODE>Node.duplicateNode(javax.media.j3d.Node, boolean)</CODE></A>, 
<A HREF="../../../javax/media/j3d/NodeComponent.html#setDuplicateOnCloneTree(boolean)"><CODE>NodeComponent.setDuplicateOnCloneTree(boolean)</CODE></A></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">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">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"><CODE>NodeReferenceTable</CODE></A>, 
<A HREF="../../../javax/media/j3d/Node.html#cloneTree()"><CODE>Node.cloneTree()</CODE></A>, 
<A HREF="../../../javax/media/j3d/DanglingReferenceException.html"><CODE>DanglingReferenceException</CODE></A></DL>
</DD>
</DL>
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