group.html

JAVA多媒体开发类库说明

<A NAME="getChild(int)"><!-- --></A><H3>
getChild</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A> <B>getChild</B>(int&nbsp;index)</PRE>
<DL>
<DD>Retrieves the child node at the specified index in
 this group node's list of children.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - which child to return.
<DT><B>Returns:</B><DD>the children at location index.  The <code>index</code>
 must be a value
 greater than or equal to 0 and less than <code>numChildren()</code>.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if the appropriate capability is
 not set and this group node is part of live or compiled scene graph
<DD><CODE>java.lang.IndexOutOfBoundsException</CODE> - if <code>index</code> is invalid.</DL>
</DD>
</DL>
<HR>

<A NAME="getAllChildren()"><!-- --></A><H3>
getAllChildren</H3>
<PRE>
public java.util.Enumeration <B>getAllChildren</B>()</PRE>
<DL>
<DD>Returns an Enumeration object of this group node's list of children.
<P>
<DD><DL>

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

<A NAME="addChild(javax.media.j3d.Node)"><!-- --></A><H3>
addChild</H3>
<PRE>
public void <B>addChild</B>(<A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A>&nbsp;child)</PRE>
<DL>
<DD>Appends the specified child node to this group node's list of children.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>child</CODE> - the child to add to this node's list of children
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if the appropriate capability is
 not set and this group node is part of live or compiled scene graph
<DD><CODE><A HREF="../../../javax/media/j3d/RestrictedAccessException.html" title="class in javax.media.j3d">RestrictedAccessException</A></CODE> - if this group node is part
 of live
 or compiled scene graph and the child node being added is not
 a BranchGroup node
<DD><CODE><A HREF="../../../javax/media/j3d/MultipleParentException.html" title="class in javax.media.j3d">MultipleParentException</A></CODE> - if <code>child</code> has already
 been added as a child of another group node.</DL>
</DD>
</DL>
<HR>

<A NAME="moveTo(javax.media.j3d.BranchGroup)"><!-- --></A><H3>
moveTo</H3>
<PRE>
public void <B>moveTo</B>(<A HREF="../../../javax/media/j3d/BranchGroup.html" title="class in javax.media.j3d">BranchGroup</A>&nbsp;branchGroup)</PRE>
<DL>
<DD>Moves the specified branch group node from its existing location to
 the end of this group node's list of children.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>branchGroup</CODE> - the branch group node to move to this node's list
 of children
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if the appropriate capability is
 not set and this group node is part of live or compiled scene graph</DL>
</DD>
</DL>
<HR>

<A NAME="numChildren()"><!-- --></A><H3>
numChildren</H3>
<PRE>
public int <B>numChildren</B>()</PRE>
<DL>
<DD>Returns a count of this group node's children.
<P>
<DD><DL>

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

<A NAME="indexOfChild(javax.media.j3d.Node)"><!-- --></A><H3>
indexOfChild</H3>
<PRE>
public int <B>indexOfChild</B>(<A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A>&nbsp;child)</PRE>
<DL>
<DD>Retrieves the index of the specified child node in
 this group node's list of children.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>child</CODE> - the child node to be looked up.
<DT><B>Returns:</B><DD>the index of the specified child node;
 returns -1 if the object is not in the list.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html" title="class in javax.media.j3d">CapabilityNotSetException</A></CODE> - if the appropriate capability is
 not set and this group node is part of live or compiled scene graph<DT><B>Since:</B></DT>
  <DD>Java 3D 1.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="removeChild(javax.media.j3d.Node)"><!-- --></A><H3>
removeChild</H3>
<PRE>
public void <B>removeChild</B>(<A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A>&nbsp;child)</PRE>
<DL>
<DD>Removes the specified child node from this group node's
 list of children.
 If the specified object is not in the list, the list is not modified.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>child</CODE> - the child node to be removed.
<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
<DD><CODE><A HREF="../../../javax/media/j3d/RestrictedAccessException.html" title="class in javax.media.j3d">RestrictedAccessException</A></CODE> - if this group node is part of
 live or compiled scene graph and the child node being removed is not
 a BranchGroup node<DT><B>Since:</B></DT>
  <DD>Java 3D 1.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="removeAllChildren()"><!-- --></A><H3>
removeAllChildren</H3>
<PRE>
public void <B>removeAllChildren</B>()</PRE>
<DL>
<DD>Removes all children from this Group node.
<P>
<DD><DL>

<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
<DD><CODE><A HREF="../../../javax/media/j3d/RestrictedAccessException.html" title="class in javax.media.j3d">RestrictedAccessException</A></CODE> - if this group node is part of
 live or compiled scene graph and any of the children being removed are
 not BranchGroup nodes<DT><B>Since:</B></DT>
  <DD>Java 3D 1.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="setAlternateCollisionTarget(boolean)"><!-- --></A><H3>
setAlternateCollisionTarget</H3>
<PRE>
public void <B>setAlternateCollisionTarget</B>(boolean&nbsp;target)</PRE>
<DL>
<DD>Causes this Group node to be reported as the collision target when
 collision is being used and this node or any of its children is in 
 a collision. The default value is false.  For collision with
 USE_GEOMETRY set, the collision traverser will check the geometry
 of all the Group node's leaf descendants; for collision with 
 USE_BOUNDS set, the collision traverser will only check the bounds
 at this Group node.  In both cases, if there is a collision, this 
 Group node will be reported as the colliding object in the
 SceneGraphPath.  This reporting is done regardless of whether
 ENABLE_COLLISION_REPORTING
 is set for this group node (setting alternate collision target to
 true implies collision reporting).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - Indicates whether this Group node can be the target
 of a collision.<DT><B>See Also:</B><DD><A HREF="../../../javax/media/j3d/WakeupOnCollisionEntry.html" title="class in javax.media.j3d"><CODE>WakeupOnCollisionEntry</CODE></A>, 
<A HREF="../../../javax/media/j3d/WakeupOnCollisionMovement.html" title="class in javax.media.j3d"><CODE>WakeupOnCollisionMovement</CODE></A>, 
<A HREF="../../../javax/media/j3d/WakeupOnCollisionExit.html" title="class in javax.media.j3d"><CODE>WakeupOnCollisionExit</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getAlternateCollisionTarget()"><!-- --></A><H3>
getAlternateCollisionTarget</H3>
<PRE>
public boolean <B>getAlternateCollisionTarget</B>()</PRE>
<DL>
<DD>Returns the collision target state.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>Indicates whether this Group node can be the target of a
 collision.</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/Node.html#cloneNode(boolean)">cloneNode</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">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>
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