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-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/LICENSE373
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/aliengo.py58
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/aliengo.urdf632
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/meshes/calf.stlbin0 -> 236284 bytes
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/meshes/hip.stlbin0 -> 82834 bytes
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh.stlbin0 -> 237884 bytes
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh_mirror.stlbin0 -> 237084 bytes
-rw-r--r--examples/pybullet/gym/pybullet_data/aliengo/meshes/trunk.stlbin0 -> 957184 bytes
8 files changed, 1063 insertions, 0 deletions
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/LICENSE b/examples/pybullet/gym/pybullet_data/aliengo/LICENSE
new file mode 100644
index 000000000..a612ad981
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/LICENSE
@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+ means each individual or legal entity that creates, contributes to
+ the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+ means the combination of the Contributions of others (if any) used
+ by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+ means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+ means Source Code Form to which the initial Contributor has attached
+ the notice in Exhibit A, the Executable Form of such Source Code
+ Form, and Modifications of such Source Code Form, in each case
+ including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+ means
+
+ (a) that the initial Contributor has attached the notice described
+ in Exhibit B to the Covered Software; or
+
+ (b) that the Covered Software was made available under the terms of
+ version 1.1 or earlier of the License, but not also under the
+ terms of a Secondary License.
+
+1.6. "Executable Form"
+ means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+ means a work that combines Covered Software with other material, in
+ a separate file or files, that is not Covered Software.
+
+1.8. "License"
+ means this document.
+
+1.9. "Licensable"
+ means having the right to grant, to the maximum extent possible,
+ whether at the time of the initial grant or subsequently, any and
+ all of the rights conveyed by this License.
+
+1.10. "Modifications"
+ means any of the following:
+
+ (a) any file in Source Code Form that results from an addition to,
+ deletion from, or modification of the contents of Covered
+ Software; or
+
+ (b) any new file in Source Code Form that contains any Covered
+ Software.
+
+1.11. "Patent Claims" of a Contributor
+ means any patent claim(s), including without limitation, method,
+ process, and apparatus claims, in any patent Licensable by such
+ Contributor that would be infringed, but for the grant of the
+ License, by the making, using, selling, offering for sale, having
+ made, import, or transfer of either its Contributions or its
+ Contributor Version.
+
+1.12. "Secondary License"
+ means either the GNU General Public License, Version 2.0, the GNU
+ Lesser General Public License, Version 2.1, the GNU Affero General
+ Public License, Version 3.0, or any later versions of those
+ licenses.
+
+1.13. "Source Code Form"
+ means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+ means an individual or a legal entity exercising rights under this
+ License. For legal entities, "You" includes any entity that
+ controls, is controlled by, or is under common control with You. For
+ purposes of this definition, "control" means (a) the power, direct
+ or indirect, to cause the direction or management of such entity,
+ whether by contract or otherwise, or (b) ownership of more than
+ fifty percent (50%) of the outstanding shares or beneficial
+ ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+ Licensable by such Contributor to use, reproduce, make available,
+ modify, display, perform, distribute, and otherwise exploit its
+ Contributions, either on an unmodified basis, with Modifications, or
+ as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+ for sale, have made, import, and otherwise transfer either its
+ Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+ or
+
+(b) for infringements caused by: (i) Your and any other third party's
+ modifications of Covered Software, or (ii) the combination of its
+ Contributions with other software (except as part of its Contributor
+ Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+ its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+ Form, as described in Section 3.1, and You must inform recipients of
+ the Executable Form how they can obtain a copy of such Source Code
+ Form by reasonable means in a timely manner, at a charge no more
+ than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+ License, or sublicense it under different terms, provided that the
+ license for the Executable Form does not attempt to limit or alter
+ the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+* *
+* 6. Disclaimer of Warranty *
+* ------------------------- *
+* *
+* Covered Software is provided under this License on an "as is" *
+* basis, without warranty of any kind, either expressed, implied, or *
+* statutory, including, without limitation, warranties that the *
+* Covered Software is free of defects, merchantable, fit for a *
+* particular purpose or non-infringing. The entire risk as to the *
+* quality and performance of the Covered Software is with You. *
+* Should any Covered Software prove defective in any respect, You *
+* (not any Contributor) assume the cost of any necessary servicing, *
+* repair, or correction. This disclaimer of warranty constitutes an *
+* essential part of this License. No use of any Covered Software is *
+* authorized under this License except under this disclaimer. *
+* *
+************************************************************************
+
+************************************************************************
+* *
+* 7. Limitation of Liability *
+* -------------------------- *
+* *
+* Under no circumstances and under no legal theory, whether tort *
+* (including negligence), contract, or otherwise, shall any *
+* Contributor, or anyone who distributes Covered Software as *
+* permitted above, be liable to You for any direct, indirect, *
+* special, incidental, or consequential damages of any character *
+* including, without limitation, damages for lost profits, loss of *
+* goodwill, work stoppage, computer failure or malfunction, or any *
+* and all other commercial damages or losses, even if such party *
+* shall have been informed of the possibility of such damages. This *
+* limitation of liability shall not apply to liability for death or *
+* personal injury resulting from such party's negligence to the *
+* extent applicable law prohibits such limitation. Some *
+* jurisdictions do not allow the exclusion or limitation of *
+* incidental or consequential damages, so this exclusion and *
+* limitation may not apply to You. *
+* *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+ This Source Code Form is subject to the terms of the Mozilla Public
+ License, v. 2.0. If a copy of the MPL was not distributed with this
+ file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+ This Source Code Form is "Incompatible With Secondary Licenses", as
+ defined by the Mozilla Public License, v. 2.0.
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/aliengo.py b/examples/pybullet/gym/pybullet_data/aliengo/aliengo.py
new file mode 100644
index 000000000..cb4588c46
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/aliengo.py
@@ -0,0 +1,58 @@
+import pybullet as p
+import time
+import pybullet_data as pd
+import numpy as np
+p.connect(p.GUI)
+p.setAdditionalSearchPath(pd.getDataPath())
+dt = 1./240.
+
+p.configureDebugVisualizer(p.COV_ENABLE_RENDERING,0)
+p.loadURDF("plane.urdf")
+robot = p.loadURDF("aliengo/aliengo.urdf",[0,0,0.5])
+p.configureDebugVisualizer(p.COV_ENABLE_RENDERING,1)
+p.setGravity(0,0,-9.8)
+
+ALIENGO_DEFAULT_ABDUCTION_ANGLE = 0
+ALIENGO_DEFAULT_HIP_ANGLE = 1.2
+ALIENGO_DEFAULT_KNEE_ANGLE = -2.0
+NUM_LEGS = 4
+INIT_MOTOR_ANGLES = np.array([
+ ALIENGO_DEFAULT_ABDUCTION_ANGLE,
+ ALIENGO_DEFAULT_HIP_ANGLE,
+ ALIENGO_DEFAULT_KNEE_ANGLE
+] * NUM_LEGS)
+
+MOTOR_NAMES = [
+ "FR_hip_joint",
+ "FR_upper_joint",
+ "FR_lower_joint",
+ "FL_hip_joint",
+ "FL_upper_joint",
+ "FL_lower_joint",
+ "RR_hip_joint",
+ "RR_upper_joint",
+ "RR_lower_joint",
+ "RL_hip_joint",
+ "RL_upper_joint",
+ "RL_lower_joint",
+]
+motor_ids = []
+
+for j in range (p.getNumJoints(robot)):
+ joint_info = p.getJointInfo(robot,j)
+ name = joint_info[1].decode('utf-8')
+ print("joint_info[1]=",name)
+ if name in MOTOR_NAMES:
+ motor_ids.append(j)
+
+for index in range (12):
+ joint_id = motor_ids[index]
+ p.setJointMotorControl2(robot, joint_id, p.POSITION_CONTROL, INIT_MOTOR_ANGLES[index])
+ p.resetJointState(robot, joint_id, INIT_MOTOR_ANGLES[index])
+
+print("motor_ids=",motor_ids)
+while p.isConnected():
+ p.stepSimulation()
+ time.sleep(dt)
+
+
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/aliengo.urdf b/examples/pybullet/gym/pybullet_data/aliengo/aliengo.urdf
new file mode 100644
index 000000000..dfab74701
--- /dev/null
+++ 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>
+
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/meshes/calf.stl b/examples/pybullet/gym/pybullet_data/aliengo/meshes/calf.stl
new file mode 100644
index 000000000..fd3738853
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/meshes/calf.stl
Binary files differ
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/meshes/hip.stl b/examples/pybullet/gym/pybullet_data/aliengo/meshes/hip.stl
new file mode 100644
index 000000000..9773ff712
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/meshes/hip.stl
Binary files differ
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh.stl b/examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh.stl
new file mode 100644
index 000000000..e8646303d
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh.stl
Binary files differ
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh_mirror.stl b/examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh_mirror.stl
new file mode 100644
index 000000000..7d7be0fd9
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/meshes/thigh_mirror.stl
Binary files differ
diff --git a/examples/pybullet/gym/pybullet_data/aliengo/meshes/trunk.stl b/examples/pybullet/gym/pybullet_data/aliengo/meshes/trunk.stl
new file mode 100644
index 000000000..e22aaabc1
--- /dev/null
+++ b/examples/pybullet/gym/pybullet_data/aliengo/meshes/trunk.stl
Binary files differ