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diff --git a/examples/pybullet/gym/pybullet_data/aliengo/aliengo.urdf b/examples/pybullet/gym/pybullet_data/aliengo/aliengo.urdf
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+++ b/examples/pybullet/gym/pybullet_data/aliengo/aliengo.urdf
@@ -0,0 +1,632 @@
+<?xml version="1.0" ?>
+<!-- =================================================================================== -->
+<!-- | This document was autogenerated by xacro from robot.xacro | -->
+<!-- | EDITING THIS FILE BY HAND IS NOT RECOMMENDED | -->
+<!-- =================================================================================== -->
+<robot name="aliengo_description" xmlns:xacro="http://www.ros.org/wiki/xacro">
+ <material name="black">
+ <color rgba="0.0 0.0 0.0 1.0"/>
+ </material>
+ <material name="blue">
+ <color rgba="0.0 0.0 0.8 1.0"/>
+ </material>
+ <material name="green">
+ <color rgba="0.0 0.8 0.0 1.0"/>
+ </material>
+ <material name="grey">
+ <color rgba="0.2 0.2 0.2 1.0"/>
+ </material>
+ <material name="silver">
+ <color rgba="0.913725490196 0.913725490196 0.847058823529 1.0"/>
+ </material>
+ <material name="orange">
+ <color rgba="1.0 0.423529411765 0.0392156862745 1.0"/>
+ </material>
+ <material name="brown">
+ <color rgba="0.870588235294 0.811764705882 0.764705882353 1.0"/>
+ </material>
+ <material name="red">
+ <color rgba="0.8 0.0 0.0 1.0"/>
+ </material>
+ <material name="white">
+ <color rgba="1.0 1.0 1.0 1.0"/>
+ </material>
+ <link name="trunk">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/trunk.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <box size="0.647 0.15 0.112"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.008465 0.004045 -0.000763"/>
+ <mass value="9.041"/>
+ <inertia ixx="0.033260231" ixy="-0.000451628" ixz="0.000487603" iyy="0.16117211" iyz="4.8356e-05" izz="0.17460442"/>
+ </inertial>
+ </link>
+ <joint name="imu_joint" type="fixed">
+ <parent link="trunk"/>
+ <child link="imu_link"/>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ </joint>
+ <link name="imu_link">
+ <inertial>
+ <mass value="0.001"/>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <inertia ixx="0.0001" ixy="0" ixz="0" iyy="0.000001" iyz="0" izz="0.0001"/>
+ </inertial>
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <box size="0.001 0.001 0.001"/>
+ </geometry>
+ <material name="red"/>
+ </visual>
+ <collision>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <box size=".001 .001 .001"/>
+ </geometry>
+ </collision>
+ </link>
+ <joint name="FR_hip_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="0.2399 -0.051 0"/>
+ <parent link="trunk"/>
+ <child link="FR_hip"/>
+ <axis xyz="1 0 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-1.2217304764" upper="1.2217304764" velocity="40"/>
+ </joint>
+ <link name="FR_hip">
+ <visual>
+ <origin rpy="3.14159265359 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/hip.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="1.57079632679 0 0" xyz="0 -0.083 0"/>
+ <geometry>
+ <cylinder length="0.0418" radius="0.046"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="-0.022191 -0.015144 -1.5e-05"/>
+ <mass value="1.993"/>
+ <inertia ixx="0.002903894" ixy="7.185e-05" ixz="-1.262e-06" iyy="0.004907517" iyz="1.75e-06" izz="0.005586944"/>
+ </inertial>
+ </link>
+ <joint name="FR_upper_joint" type="continuous">
+ <origin rpy="0 0 0" xyz="0 -0.083 0"/>
+ <parent link="FR_hip"/>
+ <child link="FR_upper"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" velocity="40"/>
+ </joint>
+ <link name="FR_upper">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/thigh_mirror.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0374 0.043"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="-0.005607 0.003877 -0.048199"/>
+ <mass value="0.639"/>
+ <inertia ixx="0.005666803" ixy="-3.597e-06" ixz="0.000491446" iyy="0.005847229" iyz="-1.0086e-05" izz="0.000369811"/>
+ </inertial>
+ </link>
+ <joint name="FR_lower_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="FR_upper"/>
+ <child link="FR_lower"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-2.77507351067" upper="-0.645771823238" velocity="40"/>
+ </joint>
+ <link name="FR_lower">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/calf.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0208 0.016"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.002781 6.3e-05 -0.142518"/>
+ <mass value="0.207"/>
+ <inertia ixx="0.006341369" ixy="-3e-09" ixz="-8.7951e-05" iyy="0.006355157" iyz="-1.336e-06" izz="3.9188e-05"/>
+ </inertial>
+ </link>
+ <joint name="FR_toe_fixed" type="fixed">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="FR_lower"/>
+ <child link="FR_toe"/>
+ </joint>
+ <link name="FR_toe">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0165"/>
+ </geometry>
+ <material name="green"/>
+ </visual>
+ <collision>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0265"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <mass value="0.06"/>
+ <inertia ixx="1.6854e-05" ixy="0.0" ixz="0.0" iyy="1.6854e-05" iyz="0.0" izz="1.6854e-05"/>
+ </inertial>
+ </link>
+ <transmission name="FR_hip_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="FR_hip_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="FR_hip_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="FR_upper_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="FR_upper_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="FR_upper_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="FR_lower_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="FR_lower_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="FR_lower_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <joint name="FL_hip_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="0.2399 0.051 0"/>
+ <parent link="trunk"/>
+ <child link="FL_hip"/>
+ <axis xyz="1 0 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-1.2217304764" upper="1.2217304764" velocity="40"/>
+ </joint>
+ <link name="FL_hip">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/hip.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="1.57079632679 0 0" xyz="0 0.083 0"/>
+ <geometry>
+ <cylinder length="0.0418" radius="0.046"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="-0.022191 0.015144 -1.5e-05"/>
+ <mass value="1.993"/>
+ <inertia ixx="0.002903894" ixy="-7.185e-05" ixz="-1.262e-06" iyy="0.004907517" iyz="-1.75e-06" izz="0.005586944"/>
+ </inertial>
+ </link>
+ <joint name="FL_upper_joint" type="continuous">
+ <origin rpy="0 0 0" xyz="0 0.083 0"/>
+ <parent link="FL_hip"/>
+ <child link="FL_upper"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" velocity="40"/>
+ </joint>
+ <link name="FL_upper">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/thigh.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0374 0.043"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="-0.005607 -0.003877 -0.048199"/>
+ <mass value="0.639"/>
+ <inertia ixx="0.005666803" ixy="3.597e-06" ixz="0.000491446" iyy="0.005847229" iyz="1.0086e-05" izz="0.000369811"/>
+ </inertial>
+ </link>
+ <joint name="FL_lower_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="FL_upper"/>
+ <child link="FL_lower"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-2.77507351067" upper="-0.645771823238" velocity="40"/>
+ </joint>
+ <link name="FL_lower">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/calf.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0208 0.016"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.002781 6.3e-05 -0.142518"/>
+ <mass value="0.207"/>
+ <inertia ixx="0.006341369" ixy="-3e-09" ixz="-8.7951e-05" iyy="0.006355157" iyz="-1.336e-06" izz="3.9188e-05"/>
+ </inertial>
+ </link>
+ <joint name="FL_toe_fixed" type="fixed">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="FL_lower"/>
+ <child link="FL_toe"/>
+ </joint>
+ <link name="FL_toe">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0165"/>
+ </geometry>
+ <material name="green"/>
+ </visual>
+ <collision>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0265"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <mass value="0.06"/>
+ <inertia ixx="1.6854e-05" ixy="0.0" ixz="0.0" iyy="1.6854e-05" iyz="0.0" izz="1.6854e-05"/>
+ </inertial>
+ </link>
+ <transmission name="FL_hip_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="FL_hip_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="FL_hip_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="FL_upper_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="FL_upper_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="FL_upper_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="FL_lower_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="FL_lower_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="FL_lower_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <joint name="RR_hip_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="-0.2399 -0.051 0"/>
+ <parent link="trunk"/>
+ <child link="RR_hip"/>
+ <axis xyz="1 0 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-1.2217304764" upper="1.2217304764" velocity="40"/>
+ </joint>
+ <link name="RR_hip">
+ <visual>
+ <origin rpy="3.14159265359 3.14159265359 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/hip.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="1.57079632679 0 0" xyz="0 -0.083 0"/>
+ <geometry>
+ <cylinder length="0.0418" radius="0.046"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.022191 -0.015144 -1.5e-05"/>
+ <mass value="1.993"/>
+ <inertia ixx="0.002903894" ixy="-7.185e-05" ixz="1.262e-06" iyy="0.004907517" iyz="1.75e-06" izz="0.005586944"/>
+ </inertial>
+ </link>
+ <joint name="RR_upper_joint" type="continuous">
+ <origin rpy="0 0 0" xyz="0 -0.083 0"/>
+ <parent link="RR_hip"/>
+ <child link="RR_upper"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" velocity="40"/>
+ </joint>
+ <link name="RR_upper">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/thigh_mirror.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0374 0.043"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="-0.005607 0.003877 -0.048199"/>
+ <mass value="0.639"/>
+ <inertia ixx="0.005666803" ixy="-3.597e-06" ixz="0.000491446" iyy="0.005847229" iyz="-1.0086e-05" izz="0.000369811"/>
+ </inertial>
+ </link>
+ <joint name="RR_lower_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="RR_upper"/>
+ <child link="RR_lower"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-2.77507351067" upper="-0.645771823238" velocity="40"/>
+ </joint>
+ <link name="RR_lower">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/calf.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0208 0.016"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.002781 6.3e-05 -0.142518"/>
+ <mass value="0.207"/>
+ <inertia ixx="0.006341369" ixy="-3e-09" ixz="-8.7951e-05" iyy="0.006355157" iyz="-1.336e-06" izz="3.9188e-05"/>
+ </inertial>
+ </link>
+ <joint name="RR_toe_fixed" type="fixed">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="RR_lower"/>
+ <child link="RR_toe"/>
+ </joint>
+ <link name="RR_toe">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0165"/>
+ </geometry>
+ <material name="green"/>
+ </visual>
+ <collision>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0265"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <mass value="0.06"/>
+ <inertia ixx="1.6854e-05" ixy="0.0" ixz="0.0" iyy="1.6854e-05" iyz="0.0" izz="1.6854e-05"/>
+ </inertial>
+ </link>
+ <transmission name="RR_hip_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="RR_hip_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="RR_hip_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="RR_upper_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="RR_upper_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="RR_upper_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="RR_lower_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="RR_lower_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="RR_lower_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <joint name="RL_hip_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="-0.2399 0.051 0"/>
+ <parent link="trunk"/>
+ <child link="RL_hip"/>
+ <axis xyz="1 0 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-1.2217304764" upper="1.2217304764" velocity="40"/>
+ </joint>
+ <link name="RL_hip">
+ <visual>
+ <origin rpy="0 3.14159265359 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/hip.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="1.57079632679 0 0" xyz="0 0.083 0"/>
+ <geometry>
+ <cylinder length="0.0418" radius="0.046"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.022191 0.015144 -1.5e-05"/>
+ <mass value="1.993"/>
+ <inertia ixx="0.002903894" ixy="7.185e-05" ixz="1.262e-06" iyy="0.004907517" iyz="-1.75e-06" izz="0.005586944"/>
+ </inertial>
+ </link>
+ <joint name="RL_upper_joint" type="continuous">
+ <origin rpy="0 0 0" xyz="0 0.083 0"/>
+ <parent link="RL_hip"/>
+ <child link="RL_upper"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" velocity="40"/>
+ </joint>
+ <link name="RL_upper">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/thigh.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0374 0.043"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="-0.005607 -0.003877 -0.048199"/>
+ <mass value="0.639"/>
+ <inertia ixx="0.005666803" ixy="3.597e-06" ixz="0.000491446" iyy="0.005847229" iyz="1.0086e-05" izz="0.000369811"/>
+ </inertial>
+ </link>
+ <joint name="RL_lower_joint" type="revolute">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="RL_upper"/>
+ <child link="RL_lower"/>
+ <axis xyz="0 1 0"/>
+ <dynamics damping="0" friction="0"/>
+ <limit effort="44.4" lower="-2.77507351067" upper="-0.645771823238" velocity="40"/>
+ </joint>
+ <link name="RL_lower">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <mesh filename="meshes/calf.stl" scale="1 1 1"/>
+ </geometry>
+ <material name="orange"/>
+ </visual>
+ <collision>
+ <origin rpy="0 1.57079632679 0" xyz="0 0 -0.125"/>
+ <geometry>
+ <box size="0.25 0.0208 0.016"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <origin rpy="0 0 0" xyz="0.002781 6.3e-05 -0.142518"/>
+ <mass value="0.207"/>
+ <inertia ixx="0.006341369" ixy="-3e-09" ixz="-8.7951e-05" iyy="0.006355157" iyz="-1.336e-06" izz="3.9188e-05"/>
+ </inertial>
+ </link>
+ <joint name="RL_toe_fixed" type="fixed">
+ <origin rpy="0 0 0" xyz="0 0 -0.25"/>
+ <parent link="RL_lower"/>
+ <child link="RL_toe"/>
+ </joint>
+ <link name="RL_toe">
+ <visual>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0165"/>
+ </geometry>
+ <material name="green"/>
+ </visual>
+ <collision>
+ <origin rpy="0 0 0" xyz="0 0 0"/>
+ <geometry>
+ <sphere radius="0.0265"/>
+ </geometry>
+ </collision>
+ <inertial>
+ <mass value="0.06"/>
+ <inertia ixx="1.6854e-05" ixy="0.0" ixz="0.0" iyy="1.6854e-05" iyz="0.0" izz="1.6854e-05"/>
+ </inertial>
+ </link>
+ <transmission name="RL_hip_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="RL_hip_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="RL_hip_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="RL_upper_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="RL_upper_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="RL_upper_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+ <transmission name="RL_lower_tran">
+ <type>transmission_interface/SimpleTransmission</type>
+ <joint name="RL_lower_joint">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ </joint>
+ <actuator name="RL_lower_motor">
+ <hardwareInterface>hardware_interface/EffortJointInterface</hardwareInterface>
+ <mechanicalReduction>1</mechanicalReduction>
+ </actuator>
+ </transmission>
+</robot>
+