viewplatform.html

java 3d帮助文档

 volume around the view platform.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/media/j3d/ViewPlatform.html#setViewAttachPolicy(int)">setViewAttachPolicy</A></B>(int&nbsp;policy)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the view attach policy that determines the coexistence center
 in the virtual world.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_javax.media.j3d.Node"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class javax.media.j3d.<A HREF="../../../javax/media/j3d/Node.html">Node</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../javax/media/j3d/Node.html#cloneTree()">cloneTree</A>, <A HREF="../../../javax/media/j3d/Node.html#cloneTree(boolean)">cloneTree</A>, <A HREF="../../../javax/media/j3d/Node.html#cloneTree(boolean, boolean)">cloneTree</A>, <A HREF="../../../javax/media/j3d/Node.html#cloneTree(javax.media.j3d.NodeReferenceTable)">cloneTree</A>, <A HREF="../../../javax/media/j3d/Node.html#cloneTree(javax.media.j3d.NodeReferenceTable, boolean)">cloneTree</A>, <A HREF="../../../javax/media/j3d/Node.html#cloneTree(javax.media.j3d.NodeReferenceTable, boolean, boolean)">cloneTree</A>, <A HREF="../../../javax/media/j3d/Node.html#duplicateNode(javax.media.j3d.Node, boolean)">duplicateNode</A>, <A HREF="../../../javax/media/j3d/Node.html#getBounds()">getBounds</A>, <A HREF="../../../javax/media/j3d/Node.html#getBoundsAutoCompute()">getBoundsAutoCompute</A>, <A HREF="../../../javax/media/j3d/Node.html#getCollidable()">getCollidable</A>, <A HREF="../../../javax/media/j3d/Node.html#getLocalToVworld(javax.media.j3d.SceneGraphPath, javax.media.j3d.Transform3D)">getLocalToVworld</A>, <A HREF="../../../javax/media/j3d/Node.html#getLocalToVworld(javax.media.j3d.Transform3D)">getLocalToVworld</A>, <A HREF="../../../javax/media/j3d/Node.html#getParent()">getParent</A>, <A HREF="../../../javax/media/j3d/Node.html#getPickable()">getPickable</A>, <A HREF="../../../javax/media/j3d/Node.html#setBounds(javax.media.j3d.Bounds)">setBounds</A>, <A HREF="../../../javax/media/j3d/Node.html#setBoundsAutoCompute(boolean)">setBoundsAutoCompute</A>, <A HREF="../../../javax/media/j3d/Node.html#setCollidable(boolean)">setCollidable</A>, <A HREF="../../../javax/media/j3d/Node.html#setPickable(boolean)">setPickable</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_javax.media.j3d.SceneGraphObject"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
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<TD><B>Methods inherited from class javax.media.j3d.<A HREF="../../../javax/media/j3d/SceneGraphObject.html">SceneGraphObject</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../javax/media/j3d/SceneGraphObject.html#clearCapability(int)">clearCapability</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#clearCapabilityIsFrequent(int)">clearCapabilityIsFrequent</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#duplicateSceneGraphObject(javax.media.j3d.SceneGraphObject)">duplicateSceneGraphObject</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#getCapability(int)">getCapability</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#getCapabilityIsFrequent(int)">getCapabilityIsFrequent</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#getUserData()">getUserData</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#isCompiled()">isCompiled</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#isLive()">isLive</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#setCapability(int)">setCapability</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#setCapabilityIsFrequent(int)">setCapabilityIsFrequent</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#setUserData(java.lang.Object)">setUserData</A>, <A HREF="../../../javax/media/j3d/SceneGraphObject.html#updateNodeReferences(javax.media.j3d.NodeReferenceTable)">updateNodeReferences</A></CODE></TD>
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<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<P>

<!-- ============ FIELD DETAIL =========== -->

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<A NAME="ALLOW_POLICY_READ"><!-- --></A><H3>
ALLOW_POLICY_READ</H3>
<PRE>
public static final int <B>ALLOW_POLICY_READ</B></PRE>
<DL>
<DD>Specifies that the ViewPlatform allows read access to its view
 attach policy information at runtime.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.media.j3d.ViewPlatform.ALLOW_POLICY_READ">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ALLOW_POLICY_WRITE"><!-- --></A><H3>
ALLOW_POLICY_WRITE</H3>
<PRE>
public static final int <B>ALLOW_POLICY_WRITE</B></PRE>
<DL>
<DD>Specifies that the ViewPlatform allows write access to its view
 attach policy information at runtime.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#javax.media.j3d.ViewPlatform.ALLOW_POLICY_WRITE">Constant Field Values</A></DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="ViewPlatform()"><!-- --></A><H3>
ViewPlatform</H3>
<PRE>
public <B>ViewPlatform</B>()</PRE>
<DL>
<DD>Constructs a ViewPlatform object with default parameters.
 The default values are as follows:
 <ul>
 view attach policy : View.NOMINAL_HEAD<br>
 activation radius : 62<br>
 </ul>
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<A NAME="setViewAttachPolicy(int)"><!-- --></A><H3>
setViewAttachPolicy</H3>
<PRE>
public void <B>setViewAttachPolicy</B>(int&nbsp;policy)</PRE>
<DL>
<DD>Sets the view attach policy that determines the coexistence center
 in the virtual world. This policy determines how Java 3D places the
 view platform relative to the position of the user's head, one of
 View.NOMINAL_SCREEN, View.NOMINAL_HEAD, or View.NOMINAL_FEET.
 The default policy is View.NOMINAL_HEAD.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>policy</CODE> - the new policy
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html">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/View.html#NOMINAL_SCREEN"><CODE>View.NOMINAL_SCREEN</CODE></A>, 
<A HREF="../../../javax/media/j3d/View.html#NOMINAL_HEAD"><CODE>View.NOMINAL_HEAD</CODE></A>, 
<A HREF="../../../javax/media/j3d/View.html#NOMINAL_FEET"><CODE>View.NOMINAL_FEET</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getViewAttachPolicy()"><!-- --></A><H3>
getViewAttachPolicy</H3>
<PRE>
public int <B>getViewAttachPolicy</B>()</PRE>
<DL>
<DD>Returns the current coexistence center in virtual-world policy.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>one of: View.NOMINAL_SCREEN, View.NOMINAL_HEAD, or
 View.NOMINAL_FEET
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../javax/media/j3d/CapabilityNotSetException.html">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="setActivationRadius(float)"><!-- --></A><H3>
setActivationRadius</H3>
<PRE>
public void <B>setActivationRadius</B>(float&nbsp;activationRadius)</PRE>
<DL>
<DD>Set the ViewPlatform's activation radius which defines an activation
 volume around the view platform.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>activationRadius</CODE> - the new activation radius</DL>
</DD>
</DL>
<HR>

<A NAME="getActivationRadius()"><!-- --></A><H3>
getActivationRadius</H3>
<PRE>
public float <B>getActivationRadius</B>()</PRE>
<DL>
<DD>Get the ViewPlatform's activation radius.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the ViewPlatform activation radius</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>Used to create a new instance of the node.  This routine is called
 by <code>cloneTree</code> to duplicate the current node.
 <code>cloneNode</code> should be overridden by any user subclassed
 objects.  All subclasses must have their <code>cloneNode</code>
 method consist of the following lines:
 <P><blockquote><pre>
     public Node cloneNode(boolean forceDuplicate) {
         UserSubClass usc = new UserSubClass();
         usc.duplicateNode(this, forceDuplicate);
         return usc;
     }
 </pre></blockquote>
<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#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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