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WheelJoint (libgdx API)
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com.badlogic.gdx.physics.box2d.joints</FONT>
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Class WheelJoint</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html" title="class in com.badlogic.gdx.physics.box2d">com.badlogic.gdx.physics.box2d.Joint</A>
      <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><B>com.badlogic.gdx.physics.box2d.joints.WheelJoint</B>
</PRE>
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<DT><PRE>public class <B>WheelJoint</B><DT>extends <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html" title="class in com.badlogic.gdx.physics.box2d">Joint</A></DL>
</PRE>

<P>
A wheel joint. This joint provides two degrees of freedom: translation along an axis fixed in body1 and rotation in the plane.
 You can use a joint limit to restrict the range of motion and a joint motor to drive the rotation or to model rotational
 friction. This joint is designed for vehicle suspensions.
<P>

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<TH ALIGN="left"><B>Fields inherited from class com.badlogic.gdx.physics.box2d.<A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html" title="class in com.badlogic.gdx.physics.box2d">Joint</A></B></TH>
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<TD><CODE><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#addr">addr</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#jointEdgeA">jointEdgeA</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#jointEdgeB">jointEdgeB</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#WheelJoint(com.badlogic.gdx.physics.box2d.World, long)">WheelJoint</A></B>(<A HREF="../../../../../../com/badlogic/gdx/physics/box2d/World.html" title="class in com.badlogic.gdx.physics.box2d">World</A>&nbsp;world,
           long&nbsp;addr)</CODE>

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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#enableMotor(boolean)">enableMotor</A></B>(boolean&nbsp;flag)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enable/disable the joint motor.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getJointSpeed()">getJointSpeed</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the current joint translation speed, usually in meters per second.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getJointTranslation()">getJointTranslation</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the current joint translation, usually in meters.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getMaxMotorTorque()">getMaxMotorTorque</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getMotorSpeed()">getMotorSpeed</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the motor speed, usually in radians per second.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getMotorTorque(float)">getMotorTorque</A></B>(float&nbsp;invDt)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the current motor torque given the inverse time step, usually in N-m.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getSpringDampingRatio()">getSpringDampingRatio</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#getSpringFrequencyHz()">getSpringFrequencyHz</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#setMaxMotorTorque(float)">setMaxMotorTorque</A></B>(float&nbsp;torque)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set/Get the maximum motor force, usually in N-m.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#setMotorSpeed(float)">setMotorSpeed</A></B>(float&nbsp;speed)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the motor speed, usually in radians per second.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#setSpringDampingRatio(float)">setSpringDampingRatio</A></B>(float&nbsp;ratio)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set/Get the spring damping ratio</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/joints/WheelJoint.html#setSpringFrequencyHz(float)">setSpringFrequencyHz</A></B>(float&nbsp;hz)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set/Get the spring frequency in hertz.</TD>
</TR>
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&nbsp;<A NAME="methods_inherited_from_class_com.badlogic.gdx.physics.box2d.Joint"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class com.badlogic.gdx.physics.box2d.<A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html" title="class in com.badlogic.gdx.physics.box2d">Joint</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getAnchorA()">getAnchorA</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getAnchorB()">getAnchorB</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getBodyA()">getBodyA</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getBodyB()">getBodyB</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getReactionForce(float)">getReactionForce</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getReactionTorque(float)">getReactionTorque</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#getType()">getType</A>, <A HREF="../../../../../../com/badlogic/gdx/physics/box2d/Joint.html#isActive()">isActive</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="WheelJoint(com.badlogic.gdx.physics.box2d.World, long)"><!-- --></A><H3>
WheelJoint</H3>
<PRE>
public <B>WheelJoint</B>(<A HREF="../../../../../../com/badlogic/gdx/physics/box2d/World.html" title="class in com.badlogic.gdx.physics.box2d">World</A>&nbsp;world,
                  long&nbsp;addr)</PRE>
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<A NAME="getJointTranslation()"><!-- --></A><H3>
getJointTranslation</H3>
<PRE>
public float <B>getJointTranslation</B>()</PRE>
<DL>
<DD>Get the current joint translation, usually in meters.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getJointSpeed()"><!-- --></A><H3>
getJointSpeed</H3>
<PRE>
public float <B>getJointSpeed</B>()</PRE>
<DL>
<DD>Get the current joint translation speed, usually in meters per second.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="enableMotor(boolean)"><!-- --></A><H3>
enableMotor</H3>
<PRE>
public void <B>enableMotor</B>(boolean&nbsp;flag)</PRE>
<DL>
<DD>Enable/disable the joint motor.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setMotorSpeed(float)"><!-- --></A><H3>
setMotorSpeed</H3>
<PRE>
public void <B>setMotorSpeed</B>(float&nbsp;speed)</PRE>
<DL>
<DD>Set the motor speed, usually in radians per second.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMotorSpeed()"><!-- --></A><H3>
getMotorSpeed</H3>
<PRE>
public float <B>getMotorSpeed</B>()</PRE>
<DL>
<DD>Get the motor speed, usually in radians per second.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setMaxMotorTorque(float)"><!-- --></A><H3>
setMaxMotorTorque</H3>
<PRE>
public void <B>setMaxMotorTorque</B>(float&nbsp;torque)</PRE>
<DL>
<DD>Set/Get the maximum motor force, usually in N-m.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMaxMotorTorque()"><!-- --></A><H3>
getMaxMotorTorque</H3>
<PRE>
public float <B>getMaxMotorTorque</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getMotorTorque(float)"><!-- --></A><H3>
getMotorTorque</H3>
<PRE>
public float <B>getMotorTorque</B>(float&nbsp;invDt)</PRE>
<DL>
<DD>Get the current motor torque given the inverse time step, usually in N-m.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setSpringFrequencyHz(float)"><!-- --></A><H3>
setSpringFrequencyHz</H3>
<PRE>
public void <B>setSpringFrequencyHz</B>(float&nbsp;hz)</PRE>
<DL>
<DD>Set/Get the spring frequency in hertz. Setting the frequency to zero disables the spring.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getSpringFrequencyHz()"><!-- --></A><H3>
getSpringFrequencyHz</H3>
<PRE>
public float <B>getSpringFrequencyHz</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setSpringDampingRatio(float)"><!-- --></A><H3>
setSpringDampingRatio</H3>
<PRE>
public void <B>setSpringDampingRatio</B>(float&nbsp;ratio)</PRE>
<DL>
<DD>Set/Get the spring damping ratio
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getSpringDampingRatio()"><!-- --></A><H3>
getSpringDampingRatio</H3>
<PRE>
public float <B>getSpringDampingRatio</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
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