Files
Mujoco_WASM/mjx/mujoco/mjx/_src/sensor.py
T
Taylor Howell ebf887e14d Add sensors to MJX. Implements jointpos and actuatorpos as examples.
PiperOrigin-RevId: 660891329
Change-Id: Ie6c282a397de2f52843775ec747495e9be46d307
2024-08-08 10:33:19 -07:00

55 lines
1.8 KiB
Python

# Copyright 2023 DeepMind Technologies Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Sensor functions."""
import jax
# pylint: disable=g-importing-member
from mujoco.mjx._src.types import Data
from mujoco.mjx._src.types import Model
from mujoco.mjx._src.types import SensorType
from typing import Tuple
# pylint: enable=g-importing-member
import numpy as np
def sensor_pos(m: Model, d: Data) -> Data:
"""Compute position-dependent sensors values."""
sensordata = d.sensordata
if np.isin(SensorType.JOINTPOS, m.sensor_type):
# jointpos
i = m.sensor_type == SensorType.JOINTPOS
objid = m.sensor_objid[i]
adr = m.sensor_adr[i]
sensordata = sensordata.at[adr].set(d.qpos[m.jnt_qposadr[objid]])
if np.isin(SensorType.ACTUATORPOS, m.sensor_type):
# actuatorpos
i = m.sensor_type == SensorType.ACTUATORPOS
objid = m.sensor_objid[i]
adr = m.sensor_adr[i]
sensordata = sensordata.at[adr].set(d.actuator_length[objid])
return d.replace(sensordata=sensordata)
def sensor_vel(m: Model, d: Data) -> Data:
"""Compute velocity-dependent sensors values."""
return d
def sensor_acc(m: Model, d: Data) -> Data:
"""Compute acceleration/force-dependent sensors values."""
return d