intersect.html

JAVA多媒体开发类库说明

<DT><B>Returns:</B><DD><code>true</code> if the PickPoint and Point3d objects
  intersect, <code>false</code> if the do not intersect.</DL>
</DD>
</DL>
<HR>

<A NAME="pointAndPoint(javax.media.j3d.PickPoint, javax.vecmath.Point3f)"><!-- --></A><H3>
pointAndPoint</H3>
<PRE>
public static boolean <B>pointAndPoint</B>(<A HREF="../../../../../../javax/media/j3d/PickPoint.html" title="class in javax.media.j3d">PickPoint</A>&nbsp;point,
                                    <A HREF="../../../../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>&nbsp;pnt)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Return true if pnt intersects with point.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point</CODE> - The point that is used in intersection test.<DD><CODE>pnt</CODE> - The point that is used in intersection test.
<DT><B>Returns:</B><DD>true if point intersects pnt, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="rayAndLine(javax.media.j3d.PickRay, javax.vecmath.Point3d[], int, double[])"><!-- --></A><H3>
rayAndLine</H3>
<PRE>
public static boolean <B>rayAndLine</B>(<A HREF="../../../../../../javax/media/j3d/PickRay.html" title="class in javax.media.j3d">PickRay</A>&nbsp;ray,
                                 <A HREF="../../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>[]&nbsp;coordinates,
                                 int&nbsp;index,
                                 double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Determines if the <code>PickRay</code> and Line
 objects intersect.  
 The line is defined as <code>coordinates[index]</code> to
 <code>coordinates[index+1]</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ray</CODE> - The ray that is used in the intersection test.<DD><CODE>coordinates</CODE> - An array holding the line data.<DD><CODE>dist</CODE> - On return dist[0] contains the distance between ray's origin and the point of
 intersection, if it exists. The dist array
 should be allocated by the user.
<DT><B>Returns:</B><DD><code>true</code> if the ray intersects the line,
  <code>false</code> if the ray does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="rayAndLine(javax.media.j3d.PickRay, javax.vecmath.Point3f[], int, double[])"><!-- --></A><H3>
rayAndLine</H3>
<PRE>
public static boolean <B>rayAndLine</B>(<A HREF="../../../../../../javax/media/j3d/PickRay.html" title="class in javax.media.j3d">PickRay</A>&nbsp;ray,
                                 <A HREF="../../../../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>[]&nbsp;coordinates,
                                 int&nbsp;index,
                                 double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Return true if line intersects with ray and the distance, from
 the origin of ray to the intersection point, is stored in dist[0].
 The line is defined by coordinates[index] to coordinates[index+1]
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ray</CODE> - The ray that is used in intersection test.<DD><CODE>coordinates</CODE> - an array of vertices.<DD><CODE>index</CODE> - the vertex index<DD><CODE>dist</CODE> - On return dist[0] contains the distance between ray's origin and the point intersection, if
 exist.
<DT><B>Returns:</B><DD>true if ray intersects line, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndLine(javax.media.j3d.PickSegment, javax.vecmath.Point3d[], int, double[])"><!-- --></A><H3>
segmentAndLine</H3>
<PRE>
public static boolean <B>segmentAndLine</B>(<A HREF="../../../../../../javax/media/j3d/PickSegment.html" title="class in javax.media.j3d">PickSegment</A>&nbsp;segment,
                                     <A HREF="../../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>[]&nbsp;coordinates,
                                     int&nbsp;index,
                                     double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Determines if the <code>PickSegment</code> and Line
 objects intersect.
 The line is defined as <code>coordinates[index]</code> to
 <code>coordinates[index+1]</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>segment</CODE> - The segment that is used in the intersection test.<DD><CODE>coordinates</CODE> - An array holding the line data.<DD><CODE>dist</CODE> - On return dist[0] contains the distance between segment's origin and the point of
 intersection, if it exists. The dist array
 should be allocated by the user.
<DT><B>Returns:</B><DD><code>true</code> if the segment intersects the line,
  <code>false</code> if the segment does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndLine(javax.media.j3d.PickSegment, javax.vecmath.Point3f[], int, double[])"><!-- --></A><H3>
segmentAndLine</H3>
<PRE>
public static boolean <B>segmentAndLine</B>(<A HREF="../../../../../../javax/media/j3d/PickSegment.html" title="class in javax.media.j3d">PickSegment</A>&nbsp;segment,
                                     <A HREF="../../../../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>[]&nbsp;coordinates,
                                     int&nbsp;index,
                                     double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Return true if line intersects with segment and the distance, from
 the start of segment to the intersection point, is stored in dist[0].
 The line is defined by coordinates[index] to coordinates[index+1]
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>segment</CODE> - The segment that is used in intersection test.<DD><CODE>coordinates</CODE> - an array of vertices.<DD><CODE>index</CODE> - the vertex index<DD><CODE>dist</CODE> - On return dist[0] contains the distance between segment's start and the point 
 intersection, if exist.
<DT><B>Returns:</B><DD>true if segment intersects line, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="pointAndLine(javax.media.j3d.PickPoint, javax.vecmath.Point3d[], int)"><!-- --></A><H3>
pointAndLine</H3>
<PRE>
public static boolean <B>pointAndLine</B>(<A HREF="../../../../../../javax/media/j3d/PickPoint.html" title="class in javax.media.j3d">PickPoint</A>&nbsp;point,
                                   <A HREF="../../../../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A>[]&nbsp;coordinates,
                                   int&nbsp;index)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Determines if the <code>PickPoint</code> and Line
 objects intersect.
 The line is defined as <code>coordinates[index]</code> to
 <code>coordinates[index+1]</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point</CODE> - The point that is used in the intersection test.<DD><CODE>coordinates</CODE> - An array holding the line data.
<DT><B>Returns:</B><DD><code>true</code> if the the point intersects the line,
  <code>false</code> if the the point does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="pointAndLine(javax.media.j3d.PickPoint, javax.vecmath.Point3f[], int)"><!-- --></A><H3>
pointAndLine</H3>
<PRE>
public static boolean <B>pointAndLine</B>(<A HREF="../../../../../../javax/media/j3d/PickPoint.html" title="class in javax.media.j3d">PickPoint</A>&nbsp;point,
                                   <A HREF="../../../../../../javax/vecmath/Point3f.html" title="class in javax.vecmath">Point3f</A>[]&nbsp;coordinates,
                                   int&nbsp;index)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Return true if line intersects with point.
 The line is defined by coordinates[index] to coordinates[index+1]
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point</CODE> - The point that is used in intersection test.<DD><CODE>coordinates</CODE> - an array of vertices.<DD><CODE>index</CODE> - the vertex index
<DT><B>Returns:</B><DD>true if point intersects line, else return false.</DL>
</DD>
</DL>
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