sensor.html

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<DT><B>Parameters:</B><DD><CODE>policy</CODE> - prediction policy one of NO_PREDICTOR, HEAD_PREDICTOR,
 or HAND_PREDICTOR
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if an invalid prediction policy
  is specified.</DL>
</DD>
</DL>
<HR>

<A NAME="getPredictionPolicy()"><!-- --></A><H3>
getPredictionPolicy</H3>
<PRE>
public int <B>getPredictionPolicy</B>()</PRE>
<DL>
<DD>This function returns the prediction policy used by this sensor.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>returns the prediction policy. one of NO_PREDICTOR,
 HEAD_PREDICTOR, or HAND_PREDICTOR.</DL>
</DD>
</DL>
<HR>

<A NAME="setHotspot(javax.vecmath.Point3d)"><!-- --></A><H3>
setHotspot</H3>
<PRE>
public void <B>setHotspot</B>(<A HREF="../../../javax/vecmath/Point3d.html">Point3d</A>&nbsp;hotspot)</PRE>
<DL>
<DD>Set the sensor's hotspot in this sensor's coordinate system.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>hotspot</CODE> - the sensor's new hotspot</DL>
</DD>
</DL>
<HR>

<A NAME="getHotspot(javax.vecmath.Point3d)"><!-- --></A><H3>
getHotspot</H3>
<PRE>
public void <B>getHotspot</B>(<A HREF="../../../javax/vecmath/Point3d.html">Point3d</A>&nbsp;hotspot)</PRE>
<DL>
<DD>Get the sensor's hotspot in this sensor's coordinate system.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>hotspot</CODE> - the variable to receive the sensor's hotspot</DL>
</DD>
</DL>
<HR>

<A NAME="setDevice(javax.media.j3d.InputDevice)"><!-- --></A><H3>
setDevice</H3>
<PRE>
public void <B>setDevice</B>(<A HREF="../../../javax/media/j3d/InputDevice.html">InputDevice</A>&nbsp;device)</PRE>
<DL>
<DD>Set the sensor's associated input device.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>device</CODE> - the sensor's new device</DL>
</DD>
</DL>
<HR>

<A NAME="getDevice()"><!-- --></A><H3>
getDevice</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/InputDevice.html">InputDevice</A> <B>getDevice</B>()</PRE>
<DL>
<DD>Retrieves the sensor's associated input device.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the sensor's device</DL>
</DD>
</DL>
<HR>

<A NAME="getRead(javax.media.j3d.Transform3D)"><!-- --></A><H3>
getRead</H3>
<PRE>
public void <B>getRead</B>(<A HREF="../../../javax/media/j3d/Transform3D.html">Transform3D</A>&nbsp;read)</PRE>
<DL>
<DD>Computes the sensor reading consistent with the prediction policy
 and copies that value into the specified argument; calling this method
 with a prediction policy of NO_PREDICTOR will return the last sensor 
 reading; calling this method with a prediction policy of HAND_PREDICTOR,
 or HEAD_PREDICTOR will extrapolate previous sensor readings to the
 current time.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>read</CODE> - The matrix that will receive the predicted sensor reading</DL>
</DD>
</DL>
<HR>

<A NAME="getRead(javax.media.j3d.Transform3D, long)"><!-- --></A><H3>
getRead</H3>
<PRE>
public void <B>getRead</B>(<A HREF="../../../javax/media/j3d/Transform3D.html">Transform3D</A>&nbsp;read,
                    long&nbsp;deltaT)</PRE>
<DL>
<DD>Computes the sensor reading consistent as of time deltaT in the future
 and copies that value into the specified argument; the reading is
 computed using the current prediction policy; a prediction policy of
 NO_PREDICTOR will yield the most recent sensor reading for any
 deltaT argument (i.e., this method is the same as getRead for a prediction
 policy of NO_PREDICTOR).  The time argument must be >= 0.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>read</CODE> - the matrix that will receive the predicted sensor reading<DD><CODE>deltaT</CODE> - the time delta into the future for this read</DL>
</DD>
</DL>
<HR>

<A NAME="lastRead(javax.media.j3d.Transform3D)"><!-- --></A><H3>
lastRead</H3>
<PRE>
public void <B>lastRead</B>(<A HREF="../../../javax/media/j3d/Transform3D.html">Transform3D</A>&nbsp;read)</PRE>
<DL>
<DD>Extracts the most recent sensor reading and copies that value into
 the specified argument.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>read</CODE> - the matrix that will receive the most recent sensor reading</DL>
</DD>
</DL>
<HR>

<A NAME="lastRead(javax.media.j3d.Transform3D, int)"><!-- --></A><H3>
lastRead</H3>
<PRE>
public void <B>lastRead</B>(<A HREF="../../../javax/media/j3d/Transform3D.html">Transform3D</A>&nbsp;read,
                     int&nbsp;kth)</PRE>
<DL>
<DD>Extracts the kth-most recent sensor reading and copies that value into
 the specified argument; where 0 is the most recent sensor reading, 1 is 
 the next most recent sensor reading, etc.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>read</CODE> - the matrix that will receive the most recent sensor reading</DL>
</DD>
</DL>
<HR>

<A NAME="lastTime()"><!-- --></A><H3>
lastTime</H3>
<PRE>
public long <B>lastTime</B>()</PRE>
<DL>
<DD>Returns the time associated with the most recent sensor reading.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the time associated with the most recent sensor reading.</DL>
</DD>
</DL>
<HR>

<A NAME="lastTime(int)"><!-- --></A><H3>
lastTime</H3>
<PRE>
public long <B>lastTime</B>(int&nbsp;k)</PRE>
<DL>
<DD>Returns the time associated with the kth-most recent sensor reading;
 where 0 is the most recent sensor reading, 1 is the next most recent
 sensor reading, etc.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the time associated with the kth-most recent sensor reading.</DL>
</DD>
</DL>
<HR>

<A NAME="lastButtons(int[])"><!-- --></A><H3>
lastButtons</H3>
<PRE>
public void <B>lastButtons</B>(int[]&nbsp;values)</PRE>
<DL>
<DD>Places the most recent sensor reading value for each button into
  the array parameter; will throw an ArrayIndexOutOfBoundsException
  if values.length is less than the number of buttons.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>values</CODE> - the array into which the button values will be
  placed</DL>
</DD>
</DL>
<HR>

<A NAME="lastButtons(int, int[])"><!-- --></A><H3>
lastButtons</H3>
<PRE>
public void <B>lastButtons</B>(int&nbsp;k,
                        int[]&nbsp;values)</PRE>
<DL>
<DD>Places the kth-most recent sensor reading value for each button into
  the array parameter; where k=0 is the most recent sensor reading, k=1 
  is the next most recent sensor reading, etc.;  will throw an 
  ArrayIndexOutOfBoundsException if values.length is less than
  the number of buttons.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>k</CODE> - the time associated with the most recent sensor reading<DD><CODE>values</CODE> - the array into which the button values will be
  placed.</DL>
</DD>
</DL>
<HR>

<A NAME="getSensorReadCount()"><!-- --></A><H3>
getSensorReadCount</H3>
<PRE>
public int <B>getSensorReadCount</B>()</PRE>
<DL>
<DD>Returns the number of SensorRead objects associated with
 this sensor.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the number of SensorReadObjects associated with this sensor</DL>
</DD>
</DL>
<HR>

<A NAME="setSensorReadCount(int)"><!-- --></A><H3>
setSensorReadCount</H3>
<PRE>
public void <B>setSensorReadCount</B>(int&nbsp;count)</PRE>
<DL>
<DD>Set the number of sensor read objects per Sensor. This is a 
 calibration parameter that should normally be set in this 
 object's constructor.  Calling this method resets all of this
 sensor's values that are already in the buffer.
 It is illegal to change this value after the device has been
 added to the scheduler.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>count</CODE> - the new sensor read count</DL>
</DD>
</DL>
<HR>

<A NAME="getSensorButtonCount()"><!-- --></A><H3>
getSensorButtonCount</H3>
<PRE>
public int <B>getSensorButtonCount</B>()</PRE>
<DL>
<DD>Returns the number of buttons associated with this sensor.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the number of buttons associated with this sensor.</DL>
</DD>
</DL>
<HR>

<A NAME="getCurrentSensorRead()"><!-- --></A><H3>
getCurrentSensorRead</H3>
<PRE>
public <A HREF="../../../javax/media/j3d/SensorRead.html">SensorRead</A> <B>getCurrentSensorRead</B>()</PRE>
<DL>
<DD>Gets the current sensor read.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the current sensor read object</DL>
</DD>
</DL>
<HR>

<A NAME="setNextSensorRead(long, javax.media.j3d.Transform3D, int[])"><!-- --></A><H3>
setNextSensorRead</H3>
<PRE>
public void <B>setNextSensorRead</B>(long&nbsp;time,
                              <A HREF="../../../javax/media/j3d/Transform3D.html">Transform3D</A>&nbsp;transform,
                              int[]&nbsp;values)</PRE>
<DL>
<DD>Sets the next sensor read to the specified values; once these
  values are set via this method they become the current values
  returned by methods such as lastRead(), lastTime(), and 
  lastButtons(); note that if there are no buttons associated with
  this sensor, values can just be an empty array.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>time</CODE> - the next SensorRead's associated time<DD><CODE>transform</CODE> - the next SensorRead's transformation<DD><CODE>values</CODE> - the next SensorRead's buttons' states</DL>
</DD>
</DL>
<HR>

<A NAME="setNextSensorRead(javax.media.j3d.SensorRead)"><!-- --></A><H3>
setNextSensorRead</H3>
<PRE>
public void <B>setNextSensorRead</B>(<A HREF="../../../javax/media/j3d/SensorRead.html">SensorRead</A>&nbsp;read)</PRE>
<DL>
<DD>Sets the next sensor read to the specified values; once these
  values are set via this method they become the current values
  returned by methods such as lastRead(), lastTime(), and
  lastButtons().
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>read</CODE> - the next SensorRead's values</DL>
</DD>
</DL>
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