spotlight.html

JAVA多媒体开发类库说明

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<A NAME="SpotLight(javax.vecmath.Color3f, javax.vecmath.Point3f, javax.vecmath.Point3f, javax.vecmath.Vector3f, float, float)"><!-- --></A><H3>
SpotLight</H3>
<PRE>
public <B>SpotLight</B>(<A HREF="../../../javax/vecmath/Color3f.html" title="class in javax.vecmath">Color3f</A>&nbsp;color,
                 <A HREF="../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>&nbsp;position,
                 <A HREF="../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>&nbsp;attenuation,
                 <A HREF="../../../javax/vecmath/Vector3f.html" title="class in javax.vecmath">Vector3f</A>&nbsp;direction,
                 float&nbsp;spreadAngle,
                 float&nbsp;concentration)</PRE>
<DL>
<DD>Constructs and initializes a SpotLight node using the
 specified parameters.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>color</CODE> - the color of the light source<DD><CODE>position</CODE> - the position of the light in three-space<DD><CODE>attenuation</CODE> - the attenuation (constant, linear, quadratic)
 of the light<DD><CODE>direction</CODE> - the direction of the light<DD><CODE>spreadAngle</CODE> - the spread angle of the light<DD><CODE>concentration</CODE> - the concentration of the light</DL>
</DL>
<HR>

<A NAME="SpotLight(boolean, javax.vecmath.Color3f, javax.vecmath.Point3f, javax.vecmath.Point3f, javax.vecmath.Vector3f, float, float)"><!-- --></A><H3>
SpotLight</H3>
<PRE>
public <B>SpotLight</B>(boolean&nbsp;lightOn,
                 <A HREF="../../../javax/vecmath/Color3f.html" title="class in javax.vecmath">Color3f</A>&nbsp;color,
                 <A HREF="../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>&nbsp;position,
                 <A HREF="../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>&nbsp;attenuation,
                 <A HREF="../../../javax/vecmath/Vector3f.html" title="class in javax.vecmath">Vector3f</A>&nbsp;direction,
                 float&nbsp;spreadAngle,
                 float&nbsp;concentration)</PRE>
<DL>
<DD>Constructs and initializes a SpotLight node using the
 specified parameters.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>lightOn</CODE> - flag indicating whether this light is on or off<DD><CODE>color</CODE> - the color of the light source<DD><CODE>position</CODE> - the position of the light in three-space<DD><CODE>attenuation</CODE> - the attenuation (constant, linear, quadratic) of the light<DD><CODE>direction</CODE> - the direction of the light<DD><CODE>spreadAngle</CODE> - the spread angle of the light<DD><CODE>concentration</CODE> - the concentration of the light</DL>
</DL>

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<A NAME="setSpreadAngle(float)"><!-- --></A><H3>
setSpreadAngle</H3>
<PRE>
public void <B>setSpreadAngle</B>(float&nbsp;spreadAngle)</PRE>
<DL>
<DD>Sets spot light spread angle.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>spreadAngle</CODE> - the new spread angle for spot light
<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>
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<A NAME="getSpreadAngle()"><!-- --></A><H3>
getSpreadAngle</H3>
<PRE>
public float <B>getSpreadAngle</B>()</PRE>
<DL>
<DD>Gets spot light spread angle.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the new spread angle for spot light. The value returned
 is the clamped value.
<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="setConcentration(float)"><!-- --></A><H3>
setConcentration</H3>
<PRE>
public void <B>setConcentration</B>(float&nbsp;concentration)</PRE>
<DL>
<DD>Sets spot light concentration.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>concentration</CODE> - the new concentration for spot light
<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="getConcentration()"><!-- --></A><H3>
getConcentration</H3>
<PRE>
public float <B>getConcentration</B>()</PRE>
<DL>
<DD>Gets spot light concentration.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the new concentration for spot light
<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="setDirection(float, float, float)"><!-- --></A><H3>
setDirection</H3>
<PRE>
public void <B>setDirection</B>(float&nbsp;x,
                         float&nbsp;y,
                         float&nbsp;z)</PRE>
<DL>
<DD>Sets light direction.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the new X direction<DD><CODE>y</CODE> - the new Y direction<DD><CODE>z</CODE> - the new Z direction
<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="setDirection(javax.vecmath.Vector3f)"><!-- --></A><H3>
setDirection</H3>
<PRE>
public void <B>setDirection</B>(<A HREF="../../../javax/vecmath/Vector3f.html" title="class in javax.vecmath">Vector3f</A>&nbsp;direction)</PRE>
<DL>
<DD>Sets this Light's current direction and places it in the parameter specified.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>direction</CODE> - the vector that will receive this node's direction
<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="getDirection(javax.vecmath.Vector3f)"><!-- --></A><H3>
getDirection</H3>
<PRE>
public void <B>getDirection</B>(<A HREF="../../../javax/vecmath/Vector3f.html" title="class in javax.vecmath">Vector3f</A>&nbsp;direction)</PRE>
<DL>
<DD>Gets this Light's current direction and places it in the
 parameter specified.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>direction</CODE> - the vector that will receive this node's direction
<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/PointLight.html#cloneNode(boolean)">cloneNode</A></CODE> in class <CODE><A HREF="../../../javax/media/j3d/PointLight.html" title="class in javax.media.j3d">PointLight</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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