picktool.html

JAVA多媒体开发类库说明

<DL>
<DD>Sets the pick shape to a user-provided PickShape object
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ps</CODE> - The pick shape to pick against.<DD><CODE>startPt</CODE> - The start point to use for distance calculations</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeBounds(javax.media.j3d.Bounds, javax.vecmath.Point3d)"><!-- --></A><H3>
setShapeBounds</H3>
<PRE>
public void <B>setShapeBounds</B>(<A HREF="../../../../../javax/media/j3d/Bounds.html" title="class in javax.media.j3d">Bounds</A>&nbsp;bounds,
                           <A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;startPt)</PRE>
<DL>
<DD>Sets the pick shape to use a user-provided Bounds object
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>bounds</CODE> - The bounds to pick against.<DD><CODE>startPt</CODE> - The start point to use for distance calculations</DL>
</DD>
</DL>
<HR>

<A NAME="setMode(int)"><!-- --></A><H3>
setMode</H3>
<PRE>
public void <B>setMode</B>(int&nbsp;mode)</PRE>
<DL>
<DD>Sets the picking detail mode.  The default is PickInfo.PICK_BOUNDS.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>mode</CODE> - One of PickInfo.PICK_BOUNDS or PickInfo.PICK_GEOMETRY.
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if mode is not a legal value</DL>
</DD>
</DL>
<HR>

<A NAME="getMode()"><!-- --></A><H3>
getMode</H3>
<PRE>
public int <B>getMode</B>()</PRE>
<DL>
<DD>Gets the picking detail mode.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setFlags(int)"><!-- --></A><H3>
setFlags</H3>
<PRE>
public void <B>setFlags</B>(int&nbsp;flags)</PRE>
<DL>
<DD>Sets the PickInfo content flags. The default is PickInfo.NODE.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flags</CODE> - specified as one or more individual bits that are 
 bitwise "OR"ed together : 
 <ul>
 <code>PickInfo.SCENEGRAPHPATH</code> - request for computed SceneGraphPath.<br>    
 <code>PickInfo.NODE</code> - request for computed intersected Node.<br>
 <code>PickInfo.LOCAL_TO_VWORLD</code> - request for computed local to virtual world transform.<br>
 <code>PickInfo.CLOSEST_INTERSECTION_POINT</code> - request for closest intersection point.<br>
 <code>PickInfo.CLOSEST_DISTANCE</code> - request for the distance of closest intersection.<br>
 <code>PickInfo.CLOSEST_GEOM_INFO</code> - request for only the closest intersection geometry information.<br>
 <code>PickInfo.ALL_GEOM_INFO</code> - request for all intersection geometry information.<br>
 </ul>
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if any other bits besides the above are set.</DL>
</DD>
</DL>
<HR>

<A NAME="getFlags()"><!-- --></A><H3>
getFlags</H3>
<PRE>
public int <B>getFlags</B>()</PRE>
<DL>
<DD>Gets the PickInfo content flags.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeRay(javax.vecmath.Point3d, javax.vecmath.Vector3d)"><!-- --></A><H3>
setShapeRay</H3>
<PRE>
public void <B>setShapeRay</B>(<A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;start,
                        <A HREF="../../../../../javax/vecmath/Vector3d.html" title="class in javax.vecmath">Vector3d</A>&nbsp;dir)</PRE>
<DL>
<DD>Sets the pick shape to a PickRay.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - The start of the ray<DD><CODE>dir</CODE> - The direction of the ray</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeSegment(javax.vecmath.Point3d, javax.vecmath.Point3d)"><!-- --></A><H3>
setShapeSegment</H3>
<PRE>
public void <B>setShapeSegment</B>(<A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;start,
                            <A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;end)</PRE>
<DL>
<DD>Sets the pick shape to a PickSegment.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - The start of the segment<DD><CODE>end</CODE> - The end of the segment</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeCylinderSegment(javax.vecmath.Point3d, javax.vecmath.Point3d, double)"><!-- --></A><H3>
setShapeCylinderSegment</H3>
<PRE>
public void <B>setShapeCylinderSegment</B>(<A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;start,
                                    <A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;end,
                                    double&nbsp;radius)</PRE>
<DL>
<DD>Sets the pick shape to a capped PickCylinder
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - The start of axis of the cylinder<DD><CODE>end</CODE> - The end of the axis of the cylinder<DD><CODE>radius</CODE> - The radius of the cylinder</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeCylinderRay(javax.vecmath.Point3d, javax.vecmath.Vector3d, double)"><!-- --></A><H3>
setShapeCylinderRay</H3>
<PRE>
public void <B>setShapeCylinderRay</B>(<A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;start,
                                <A HREF="../../../../../javax/vecmath/Vector3d.html" title="class in javax.vecmath">Vector3d</A>&nbsp;dir,
                                double&nbsp;radius)</PRE>
<DL>
<DD>Sets the pick shape to an infinite PickCylinder.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - The start of axis of the cylinder<DD><CODE>dir</CODE> - The direction of the axis of the cylinder<DD><CODE>radius</CODE> - The radius of the cylinder</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeConeSegment(javax.vecmath.Point3d, javax.vecmath.Point3d, double)"><!-- --></A><H3>
setShapeConeSegment</H3>
<PRE>
public void <B>setShapeConeSegment</B>(<A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;start,
                                <A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;end,
                                double&nbsp;angle)</PRE>
<DL>
<DD>Sets the pick shape to a capped PickCone
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - The start of axis of the cone<DD><CODE>end</CODE> - The end of the axis of the cone<DD><CODE>angle</CODE> - The angle of the cone</DL>
</DD>
</DL>
<HR>

<A NAME="setShapeConeRay(javax.vecmath.Point3d, javax.vecmath.Vector3d, double)"><!-- --></A><H3>
setShapeConeRay</H3>
<PRE>
public void <B>setShapeConeRay</B>(<A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;start,
                            <A HREF="../../../../../javax/vecmath/Vector3d.html" title="class in javax.vecmath">Vector3d</A>&nbsp;dir,
                            double&nbsp;angle)</PRE>
<DL>
<DD>Sets the pick shape to an infinite PickCone.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>start</CODE> - The start of axis of the cone<DD><CODE>dir</CODE> - The direction of the axis of the cone<DD><CODE>angle</CODE> - The angle of the cone</DL>
</DD>
</DL>
<HR>

<A NAME="getPickShape()"><!-- --></A><H3>
getPickShape</H3>
<PRE>
public <A HREF="../../../../../javax/media/j3d/PickShape.html" title="class in javax.media.j3d">PickShape</A> <B>getPickShape</B>()</PRE>
<DL>
<DD>Returns the PickShape for this object.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getStartPosition()"><!-- --></A><H3>
getStartPosition</H3>
<PRE>
public <A HREF="../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A> <B>getStartPosition</B>()</PRE>
<DL>
<DD>Returns the start postion used for distance measurement.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="pickAll()"><!-- --></A><H3>
pickAll</H3>
<PRE>
public <A HREF="../../../../../javax/media/j3d/PickInfo.html" title="class in javax.media.j3d">PickInfo</A>[] <B>pickAll</B>()</PRE>
<DL>
<DD>Selects all the nodes that intersect the PickShape.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>An array of <code>PickInfo</code> objects which will contain 
       information about the picked instances. <code>null</code> if nothing was 
       picked.</DL>
</DD>
</DL>
<HR>

<A NAME="pickAny()"><!-- --></A><H3>
pickAny</H3>
<PRE>
public <A HREF="../../../../../javax/media/j3d/PickInfo.html" title="class in javax.media.j3d">PickInfo</A> <B>pickAny</B>()</PRE>
<DL>
<DD>Select one of the nodes that intersect the PickShape
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A <code>PickInfo</code> object which will contain 
         information about the picked instance. <code>null</code> if nothing 
         was picked.</DL>
</DD>
</DL>
<HR>

<A NAME="pickAllSorted()"><!-- --></A><H3>
pickAllSorted</H3>
<PRE>
public <A HREF="../../../../../javax/media/j3d/PickInfo.html" title="class in javax.media.j3d">PickInfo</A>[] <B>pickAllSorted</B>()</PRE>
<DL>
<DD>Select all the nodes that intersect the 
        PickShape, returned sorted. The "closest" object will be returned first.
        See note above to see how "closest" is determined.    
        <p>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>An array of <code>PickInfo</code> objects which will contain 
        information 
        about the picked instances. <code>null</code> if nothing was picked.</DL>
</DD>
</DL>
<HR>

<A NAME="pickClosest()"><!-- --></A><H3>
pickClosest</H3>
<PRE>
public <A HREF="../../../../../javax/media/j3d/PickInfo.html" title="class in javax.media.j3d">PickInfo</A> <B>pickClosest</B>()</PRE>
<DL>
<DD>Select the closest node that 
        intersects the PickShape. See note above to see how "closest" is 
        determined.
        <p>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A <code>PickInfo</code> object which will contain 
        information about the picked instance. <code>null</code> if nothing 
        was picked.</DL>
</DD>
</DL>
<HR>

<A NAME="getNode(javax.media.j3d.PickInfo, int)"><!-- --></A><H3>
getNode</H3>
<PRE>
public <A HREF="../../../../../javax/media/j3d/Node.html" title="class in javax.media.j3d">Node</A> <B>getNode</B>(<A HREF="../../../../../javax/media/j3d/PickInfo.html" title="class in javax.media.j3d">PickInfo</A>&nbsp;pickInfo,
                    int&nbsp;type)</PRE>
<DL>
<DD>Get the first node of a certain type up the SceneGraphPath
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>type</CODE> - the type of node we are interested in
<DT><B>Returns:</B><DD>a Node object
<DT><B>Throws:</B>
<DD><CODE>java.lang.NullPointerException</CODE> - if pickInfo does not contain a
 Scenegraphpath or a picked node</DL>
</DD>
</DL>
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