switch.html

JAVA多媒体开发类库说明

<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>whichChild</CODE> - the initial child selection index</DL>
</DL>
<HR>

<A NAME="Switch(int, java.util.BitSet)"><!-- --></A><H3>
Switch</H3>
<PRE>
public <B>Switch</B>(int&nbsp;whichChild,
              java.util.BitSet&nbsp;childMask)</PRE>
<DL>
<DD>Constructs and initializes a Switch node using the specified
 child selection index and mask.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>whichChild</CODE> - the initial child selection index<DD><CODE>childMask</CODE> - the initial child selection mask</DL>
</DL>

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<A NAME="setWhichChild(int)"><!-- --></A><H3>
setWhichChild</H3>
<PRE>
public void <B>setWhichChild</B>(int&nbsp;child)</PRE>
<DL>
<DD>Sets the child selection index that specifies which child is rendered.
 If the value is out of range, then no children are drawn.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>child</CODE> - a non-negative integer index value, indicating a
 specific child, or one of the following constants: CHILD_NONE,
 CHILD_ALL, or CHILD_MASK.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if appropriate capability is
 not set and this object is part of live or compiled scene graph<DT><B>See Also:</B><DD><A HREF="../../../javax/media/j3d/Switch.html#CHILD_NONE"><CODE>CHILD_NONE</CODE></A>, 
<A HREF="../../../javax/media/j3d/Switch.html#CHILD_ALL"><CODE>CHILD_ALL</CODE></A>, 
<A HREF="../../../javax/media/j3d/Switch.html#CHILD_MASK"><CODE>CHILD_MASK</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getWhichChild()"><!-- --></A><H3>
getWhichChild</H3>
<PRE>
public int <B>getWhichChild</B>()</PRE>
<DL>
<DD>Retrieves the current child selection index that specifies which
 child is rendered.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>a non-negative integer index value, indicating a
 specific child, or one of the following constants: CHILD_NONE,
 CHILD_ALL, or CHILD_MASK
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if appropriate capability is
 not set and this object is part of live or compiled scene graph<DT><B>See Also:</B><DD><A HREF="../../../javax/media/j3d/Switch.html#CHILD_NONE"><CODE>CHILD_NONE</CODE></A>, 
<A HREF="../../../javax/media/j3d/Switch.html#CHILD_ALL"><CODE>CHILD_ALL</CODE></A>, 
<A HREF="../../../javax/media/j3d/Switch.html#CHILD_MASK"><CODE>CHILD_MASK</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setChildMask(java.util.BitSet)"><!-- --></A><H3>
setChildMask</H3>
<PRE>
public void <B>setChildMask</B>(java.util.BitSet&nbsp;childMask)</PRE>
<DL>
<DD>Sets the child selection mask.  This mask is used when
 the child selection index is set to CHILD_MASK.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>childMask</CODE> - a BitSet that specifies which children are rendered
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if appropriate capability is
 not set and this object is part of live or compiled scene graph</DL>
</DD>
</DL>
<HR>

<A NAME="getChildMask()"><!-- --></A><H3>
getChildMask</H3>
<PRE>
public java.util.BitSet <B>getChildMask</B>()</PRE>
<DL>
<DD>Retrieves the current child selection mask.  This mask is used when
 the child selection index is set to CHILD_MASK.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the child selection mask
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if appropriate capability is
 not set and this object is part of live or compiled scene graph</DL>
</DD>
</DL>
<HR>

<A NAME="currentChild()"><!-- --></A><H3>
currentChild</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A> <B>currentChild</B>()</PRE>
<DL>
<DD>Retrieves the currently selected child. If the child selection index
 is out of range or is set to CHILD_NONE, CHILD_ALL, or CHILD_MASK,
 then this method returns null.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>a reference to the current child chosen for rendering
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if appropriate capability is
 not set and this object is part of live or compiled scene graph</DL>
</DD>
</DL>
<HR>

<A NAME="cloneNode(boolean)"><!-- --></A><H3>
cloneNode</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A> <B>cloneNode</B>(boolean&nbsp;forceDuplicate)</PRE>
<DL>
<DD>Used to create 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/Group.html#cloneNode(boolean)">cloneNode</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/Group.html" title="class in javax.media.j3d">Group</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>
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