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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_06) on Wed Dec 13 16:20:07 PST 2006 --><TITLE>Sensor (Java 3D 1.5.0)</TITLE><META NAME="keywords" CONTENT="javax.media.j3d.Sensor class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Sensor (Java 3D 1.5.0)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../javax/media/j3d/Screen3D.html" title="class in javax.media.j3d"><B>PREV CLASS</B></A> <A HREF="../../../javax/media/j3d/SensorRead.html" title="class in javax.media.j3d"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?javax/media/j3d/Sensor.html" target="_top"><B>FRAMES</B></A> <A HREF="Sensor.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">javax.media.j3d</FONT><BR>Class Sensor</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>javax.media.j3d.Sensor</B></PRE><HR><DL><DT><PRE>public class <B>Sensor</B><DT>extends java.lang.Object</DL></PRE><P>The Sensor Class encapsulates an object that provides real-time data. Examples include six-degree-of-freedom tracking, a joystick, or a data file being read back during a program. A sensor must be used in conjuction with an implementation of the InputDevice interface.<P> The Sensor object provides an abstract concept of a hardware input device. A Sensor consists of a timestamped sequence of input values and the state of buttons or switches at the time that Java 3D sampled the value. A sensor also contains a hotspot offset specified in the sensor's local coordinate system. If not specified, the hotspot is (0.0, 0.0, 0.0).<P> Since a typical hardware environment may contain multiple sensing elements, Java 3D maintains an array of sensors. Users can access a sensor directly from their Java code or they can assign a sensor to one of Java 3D's predefined 6DOF entities, such as UserHead.<P> Using a sensor is as easy as accessing an object. Write your Java code to extract the associated sensor value from the array of sensors. You can then directly apply that value to an element in a scene graph or process the sensor values in whatever way necessary.<P> Java 3D includes three special six-degrees-of-freedom (6DOF) entities. These include UserHead, DominantHand, and NondominantHand. You can assign or change which sensor drives one of these predefined entities. Java 3D uses the specified sensor to drive the 6DOF entity - most visibly the View.<P> Java 3D does not provide raw tracker or joystick-generated data in a sensor. At a minimum, Java 3D normalizes the raw data using the registration and calibration parameters either provided by or provided for the end user. It additionally may filter and process the data to remove noise and improve latency. The application programmer can suppress this latter effect on a sensor-by-sensor basis.<P><P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../javax/media/j3d/SensorRead.html" title="class in javax.media.j3d"><CODE>SensorRead</CODE></A></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#DEFAULT_SENSOR_READ_COUNT">DEFAULT_SENSOR_READ_COUNT</A></B></CODE><BR> Default SensorRead object count (30); the number of SensorRead objects constructed if no count is specified.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#HAND_PREDICTOR">HAND_PREDICTOR</A></B></CODE><BR> <B>Deprecated.</B> <I>As of Java 3D version 1.4, prediction is not a supported feature.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#HEAD_PREDICTOR">HEAD_PREDICTOR</A></B></CODE><BR> <B>Deprecated.</B> <I>As of Java 3D version 1.4, prediction is not a supported feature.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#NO_PREDICTOR">NO_PREDICTOR</A></B></CODE><BR> <B>Deprecated.</B> <I>As of Java 3D version 1.4, prediction is not a supported feature.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#PREDICT_NEXT_FRAME_TIME">PREDICT_NEXT_FRAME_TIME</A></B></CODE><BR> <B>Deprecated.</B> <I>As of Java 3D version 1.4, prediction is not a supported feature.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#PREDICT_NONE">PREDICT_NONE</A></B></CODE><BR> <B>Deprecated.</B> <I>As of Java 3D version 1.4, prediction is not a supported feature.</I></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#Sensor(javax.media.j3d.InputDevice)">Sensor</A></B>(<A HREF="../../../javax/media/j3d/InputDevice.html" title="interface in javax.media.j3d">InputDevice</A> device)</CODE><BR> Constructs a Sensor object for the specified input device using default parameters.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#Sensor(javax.media.j3d.InputDevice, int)">Sensor</A></B>(<A HREF="../../../javax/media/j3d/InputDevice.html" title="interface in javax.media.j3d">InputDevice</A> device, int sensorReadCount)</CODE><BR> Constructs a Sensor object for the specified input device using the specified number of SensorRead objects.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#Sensor(javax.media.j3d.InputDevice, int, int)">Sensor</A></B>(<A HREF="../../../javax/media/j3d/InputDevice.html" title="interface in javax.media.j3d">InputDevice</A> device, int sensorReadCount, int sensorButtonCount)</CODE><BR> Constructs a Sensor object for the specified input device using the specified number of SensorRead objects and number of buttons.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#Sensor(javax.media.j3d.InputDevice, int, int, javax.vecmath.Point3d)">Sensor</A></B>(<A HREF="../../../javax/media/j3d/InputDevice.html" title="interface in javax.media.j3d">InputDevice</A> device, int sensorReadCount, int sensorButtonCount, <A HREF="../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A> hotspot)</CODE><BR> Constructs a Sensor object for the specified input device using the specified number of SensorRead objects, number of buttons, and hotspot.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#Sensor(javax.media.j3d.InputDevice, int, javax.vecmath.Point3d)">Sensor</A></B>(<A HREF="../../../javax/media/j3d/InputDevice.html" title="interface in javax.media.j3d">InputDevice</A> device, int sensorReadCount, <A HREF="../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A> hotspot)</CODE><BR> Constructs a Sensor object for the specified input device using the specified number of SensorRead objects and hotspot.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#Sensor(javax.media.j3d.InputDevice, javax.vecmath.Point3d)">Sensor</A></B>(<A HREF="../../../javax/media/j3d/InputDevice.html" title="interface in javax.media.j3d">InputDevice</A> device, <A HREF="../../../javax/vecmath/Point3d.html" title="class in javax.vecmath">Point3d</A> hotspot)</CODE><BR> Constructs a Sensor object for the specified input device using the specified hotspot.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../javax/media/j3d/SensorRead.html" title="class in javax.media.j3d">SensorRead</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../javax/media/j3d/Sensor.html#getCurrentSensorRead()">getCurrentSensorRead</A></B>()</CODE>⌨️ 快捷键说明
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