intersect.html

JAVA多媒体开发类库说明

<DD><B>Deprecated.</B>&nbsp;<DD>Return true if triangle intersects with ray and the distance, from
 the origin of ray to the intersection point, is stored in dist[0].
 The triangle is defined by coordinates[index] to coordinates[index+2]
 <code>coordinates[index+2]</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ray</CODE> - The ray to use in the intersection test.<DD><CODE>coordinates</CODE> - An array holding the triangle data.<DD><CODE>index</CODE> - An array index that designates the starting position
  in the array of the triangle to test.<DD><CODE>dist</CODE> - On return dist[0] will be set to 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 triangle,
  <code>false</code> if the ray does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="rayAndTriangle(javax.media.j3d.PickRay, javax.vecmath.Point3f[], int, double[])"><!-- --></A><H3>
rayAndTriangle</H3>
<PRE>
public static boolean <B>rayAndTriangle</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 triangle intersects with ray and the distance, from
 the origin of ray to the intersection point, is stored in dist[0].
 The triangle is defined by coordinates[index] to coordinates[index+2]
<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] will be set to the distance between ray's origin and the point intersection, if
 exist.
<DT><B>Returns:</B><DD>true if ray intersects triangle, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndQuad(javax.media.j3d.PickSegment, javax.vecmath.Point3d[], int, double[])"><!-- --></A><H3>
segmentAndQuad</H3>
<PRE>
public static boolean <B>segmentAndQuad</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>Caluates the intersection between a <code>PickSegment</code>
 object and a quadrilateral.
 The quad is defined as coordinates[index] to coordinates[index+3]
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>segment</CODE> - The segment to use in the intersection test.<DD><CODE>coordinates</CODE> - An array holding the quadrilateral data.<DD><CODE>index</CODE> - An array index that designates the starting position
  in the array of the quadrilateral to test.<DD><CODE>dist</CODE> - On return dist[0] will be set to the distance between the start of the segment
   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 quad,
  <code>false</code> if the segment does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndQuad(javax.media.j3d.PickSegment, javax.vecmath.Point3f[], int, double[])"><!-- --></A><H3>
segmentAndQuad</H3>
<PRE>
public static boolean <B>segmentAndQuad</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 quad intersects with segment and the distance, from
 the start of segment to the intersection point, is stored in dist[0].
 The quad is defined by coordinates[index] to coordinates[index+3]
<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] will be set to the distance between segment's start and the point 
 intersection, if exist.
<DT><B>Returns:</B><DD>true if segment intersects quad, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndTriangle(javax.media.j3d.PickSegment, javax.vecmath.Point3d[], int, double[])"><!-- --></A><H3>
segmentAndTriangle</H3>
<PRE>
public static boolean <B>segmentAndTriangle</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>Caluates the intersection between a <code>PickSegment</code>
 object and a triangle.
 The triangle is defined as coordinates[index] to coordinates[index+2]
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>segment</CODE> - The segment to use in the intersection test.<DD><CODE>coordinates</CODE> - An array holding the triangle data.<DD><CODE>index</CODE> - An array index that designates the starting position
  in the array of the triangle to test.<DD><CODE>dist</CODE> - On return dist[0] contains the distance between the start of the segment
   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 triangle,
  <code>false</code> if the segment does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndTriangle(javax.media.j3d.PickSegment, javax.vecmath.Point3f[], int, double[])"><!-- --></A><H3>
segmentAndTriangle</H3>
<PRE>
public static boolean <B>segmentAndTriangle</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 triangle intersects with segment and the distance, from
 the start of segment to the intersection point, is stored in dist[0].
 The triangle is defined by coordinates[index] to coordinates[index+2]
<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] will be set to the distance between segment's start and the point 
 intersection, if exist.
<DT><B>Returns:</B><DD>true if segment intersects triangle, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="rayAndPoint(javax.media.j3d.PickRay, javax.vecmath.Point3d, double[])"><!-- --></A><H3>
rayAndPoint</H3>
<PRE>
public static boolean <B>rayAndPoint</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;pnt,
                                  double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Determines if the <code>PickRay</code> and <code>Point3d</code>
 objects intersect.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ray</CODE> - The ray that is used in the intersection test.<DD><CODE>pnt</CODE> - The point that is used in intersection test.<DD><CODE>dist</CODE> - On return dist[0] will be set to 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 point,
  <code>false</code> if the ray does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="rayAndPoint(javax.media.j3d.PickRay, javax.vecmath.Point3f, double[])"><!-- --></A><H3>
rayAndPoint</H3>
<PRE>
public static boolean <B>rayAndPoint</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;pnt,
                                  double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Return true if point intersects with ray and the distance, from
 the origin of ray to the intersection point, is stored in dist[0].
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ray</CODE> - The ray that is used in intersection test.<DD><CODE>pnt</CODE> - The point that is used in intersection test.<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 point, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndPoint(javax.media.j3d.PickSegment, javax.vecmath.Point3d, double[])"><!-- --></A><H3>
segmentAndPoint</H3>
<PRE>
public static boolean <B>segmentAndPoint</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;pnt,
                                      double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Determines if the <code>PickSegment</code> and <code>Point3d</code>
 objects intersect.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>segment</CODE> - The segment that is used in the intersection test.<DD><CODE>pnt</CODE> - The point that is used in intersection test.<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 point,
  <code>false</code> if the segment does not intersect the object.</DL>
</DD>
</DL>
<HR>

<A NAME="segmentAndPoint(javax.media.j3d.PickSegment, javax.vecmath.Point3f, double[])"><!-- --></A><H3>
segmentAndPoint</H3>
<PRE>
public static boolean <B>segmentAndPoint</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;pnt,
                                      double[]&nbsp;dist)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Return true if point intersects with segment and the distance, from
 the start of segment to the intersection point, is stored in dist[0].
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>segment</CODE> - The segment that is used in intersection test.<DD><CODE>pnt</CODE> - The point that is used in intersection test.<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 point, else return false.</DL>
</DD>
</DL>
<HR>

<A NAME="pointAndPoint(javax.media.j3d.PickPoint, javax.vecmath.Point3d)"><!-- --></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/Point3d.html" title="class in javax.vecmath">Point3d</A>&nbsp;pnt)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<DD>Determines if the <code>PickPoint</code> and <code>Point3d</code>
 objects intersect.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>point</CODE> - The PickPoint that is used in the intersection test.<DD><CODE>pnt</CODE> - The Point3d that is used in intersection test.