# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
# NVIDIA CORPORATION and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto. Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA CORPORATION is strictly prohibited.
import os
import random
from PIL import Image as Im
from isaacgym import gymapi
from isaacgym import gymtorch
from rofunc.learning.RofuncRL.tasks.isaacgymenv.base.vec_task import VecTask
from rofunc.learning.RofuncRL.tasks.utils.torch_jit_utils import *
from rofunc.utils.oslab import get_rofunc_path
[docs]class ShadowHandScissorsTask(VecTask):
"""
This class corresponds to the Scissors task. This environment involves two hands and scissors,
we need to use two hands to open the scissors
"""
def __init__(self, cfg, rl_device, sim_device, graphics_device_id, headless, virtual_screen_capture,
force_render, agent_index=[[[0, 1, 2, 3, 4, 5]], [[0, 1, 2, 3, 4, 5]]], is_multi_agent=False):
self.cfg = cfg
self.agent_index = agent_index
self.is_multi_agent = is_multi_agent
self.randomize = self.cfg["task"]["randomize"]
self.randomization_params = self.cfg["task"]["randomization_params"]
self.aggregate_mode = self.cfg["env"]["aggregateMode"]
self.dist_reward_scale = self.cfg["env"]["distRewardScale"]
self.rot_reward_scale = self.cfg["env"]["rotRewardScale"]
self.action_penalty_scale = self.cfg["env"]["actionPenaltyScale"]
self.success_tolerance = self.cfg["env"]["successTolerance"]
self.reach_goal_bonus = self.cfg["env"]["reachGoalBonus"]
self.fall_dist = self.cfg["env"]["fallDistance"]
self.fall_penalty = self.cfg["env"]["fallPenalty"]
self.rot_eps = self.cfg["env"]["rotEps"]
self.vel_obs_scale = 0.2 # scale factor of velocity based observations
self.force_torque_obs_scale = 10.0 # scale factor of velocity based observations
self.reset_position_noise = self.cfg["env"]["resetPositionNoise"]
self.reset_rotation_noise = self.cfg["env"]["resetRotationNoise"]
self.reset_dof_pos_noise = self.cfg["env"]["resetDofPosRandomInterval"]
self.reset_dof_vel_noise = self.cfg["env"]["resetDofVelRandomInterval"]
self.shadow_hand_dof_speed_scale = self.cfg["env"]["dofSpeedScale"]
self.use_relative_control = self.cfg["env"]["useRelativeControl"]
self.act_moving_average = self.cfg["env"]["actionsMovingAverage"]
self.debug_viz = self.cfg["env"]["enableDebugVis"]
self.max_episode_length = self.cfg["env"]["episodeLength"]
self.reset_time = self.cfg["env"].get("resetTime", -1.0)
self.print_success_stat = self.cfg["env"]["printNumSuccesses"]
self.max_consecutive_successes = self.cfg["env"]["maxConsecutiveSuccesses"]
self.av_factor = self.cfg["env"].get("averFactor", 0.01)
print("Averaging factor: ", self.av_factor)
self.transition_scale = self.cfg["env"]["transition_scale"]
self.orientation_scale = self.cfg["env"]["orientation_scale"]
control_freq_inv = self.cfg["env"].get("controlFrequencyInv", 1)
if self.reset_time > 0.0:
self.max_episode_length = int(round(self.reset_time / (control_freq_inv * self.sim_params.dt)))
print("Reset time: ", self.reset_time)
print("New episode length: ", self.max_episode_length)
self.object_type = self.cfg["env"]["objectType"]
# assert self.object_type in ["block", "egg", "pen"]
self.ignore_z = (self.object_type == "pen")
self.asset_files_dict = {
"block": "urdf/objects/cube_multicolor.urdf",
"egg": "mjcf/open_ai_assets/hand/egg.xml",
"pen": "mjcf/open_ai_assets/hand/pen.xml",
# "pot": "mjcf/pot.xml",
"pot": "mjcf/scissors/10495/mobility.urdf"
}
if "asset" in self.cfg["env"]:
self.asset_files_dict["block"] = self.cfg["env"]["asset"].get("assetFileNameBlock",
self.asset_files_dict["block"])
self.asset_files_dict["egg"] = self.cfg["env"]["asset"].get("assetFileNameEgg",
self.asset_files_dict["egg"])
self.asset_files_dict["pen"] = self.cfg["env"]["asset"].get("assetFileNamePen",
self.asset_files_dict["pen"])
# can be "openai", "full_no_vel", "full", "full_state"
self.obs_type = self.cfg["env"]["observationType"]
if not (self.obs_type in ["point_cloud", "full_state"]):
raise Exception(
"Unknown type of observations!\nobservationType should be one of: [point_cloud, full_state]")
print("Obs type:", self.obs_type)
self.num_point_cloud_feature_dim = 768
self.num_obs_dict = {
"point_cloud": 417 + self.num_point_cloud_feature_dim * 3,
"point_cloud_for_distill": 417 + self.num_point_cloud_feature_dim * 3,
"full_state": 417
}
self.num_hand_obs = 72 + 95 + 26 + 6
self.up_axis = 'z'
self.fingertips = ["robot0:ffdistal", "robot0:mfdistal", "robot0:rfdistal", "robot0:lfdistal",
"robot0:thdistal"]
self.a_fingertips = ["robot1:ffdistal", "robot1:mfdistal", "robot1:rfdistal", "robot1:lfdistal",
"robot1:thdistal"]
self.hand_center = ["robot1:palm"]
self.num_fingertips = len(self.fingertips) * 2
self.use_vel_obs = False
self.fingertip_obs = True
self.asymmetric_obs = self.cfg["env"]["asymmetric_observations"]
num_states = 0
if self.asymmetric_obs:
num_states = 211
self.cfg["env"]["numObservations"] = self.num_obs_dict[self.obs_type]
self.cfg["env"]["numStates"] = num_states
if self.is_multi_agent:
self.num_agents = 2
self.cfg["env"]["numActions"] = 26
else:
self.num_agents = 1
self.cfg["env"]["numActions"] = 52
super().__init__(cfg, rl_device, sim_device, graphics_device_id, headless, virtual_screen_capture, force_render)
if self.obs_type in ["point_cloud"]:
from PIL import Image as Im
# from pointnet2_ops import pointnet2_utils
self.camera_debug = self.cfg["env"].get("cameraDebug", False)
self.point_cloud_debug = self.cfg["env"].get("pointCloudDebug", False)
if self.viewer != None:
cam_pos = gymapi.Vec3(10.0, 5.0, 1.0)
cam_target = gymapi.Vec3(6.0, 5.0, 0.0)
self.gym.viewer_camera_look_at(self.viewer, None, cam_pos, cam_target)
# get gym GPU state tensors
actor_root_state_tensor = self.gym.acquire_actor_root_state_tensor(self.sim)
dof_state_tensor = self.gym.acquire_dof_state_tensor(self.sim)
rigid_body_tensor = self.gym.acquire_rigid_body_state_tensor(self.sim)
sensor_tensor = self.gym.acquire_force_sensor_tensor(self.sim)
self.vec_sensor_tensor = gymtorch.wrap_tensor(sensor_tensor).view(self.num_envs, self.num_fingertips * 6)
dof_force_tensor = self.gym.acquire_dof_force_tensor(self.sim)
self.dof_force_tensor = gymtorch.wrap_tensor(dof_force_tensor).view(self.num_envs,
self.num_shadow_hand_dofs * 2 + self.num_object_dofs * 2)
self.dof_force_tensor = self.dof_force_tensor[:, :48]
self.gym.refresh_actor_root_state_tensor(self.sim)
self.gym.refresh_dof_state_tensor(self.sim)
self.gym.refresh_rigid_body_state_tensor(self.sim)
# create some wrapper tensors for different slices
self.shadow_hand_default_dof_pos = torch.zeros(self.num_shadow_hand_dofs, dtype=torch.float, device=self.device)
# self.shadow_hand_default_dof_pos = to_torch([0.0, 0.0, -0, -0, -0, -0, -0, -0,
# -0, -0, -0, -0, -0, -0, -0, -0,
# -0, -0, -0, -1.04, 1.2, 0., 0, -1.57], dtype=torch.float, device=self.device)
self.dof_state = gymtorch.wrap_tensor(dof_state_tensor)
self.shadow_hand_dof_state = self.dof_state.view(self.num_envs, -1, 2)[:, :self.num_shadow_hand_dofs]
self.shadow_hand_dof_pos = self.shadow_hand_dof_state[..., 0]
self.shadow_hand_dof_vel = self.shadow_hand_dof_state[..., 1]
self.shadow_hand_another_dof_state = self.dof_state.view(self.num_envs, -1, 2)[:,
self.num_shadow_hand_dofs:self.num_shadow_hand_dofs * 2]
self.shadow_hand_another_dof_pos = self.shadow_hand_another_dof_state[..., 0]
self.shadow_hand_another_dof_vel = self.shadow_hand_another_dof_state[..., 1]
self.object_dof_state = self.dof_state.view(self.num_envs, -1, 2)[:,
self.num_shadow_hand_dofs * 2:self.num_shadow_hand_dofs * 2 + self.num_object_dofs]
self.object_dof_pos = self.object_dof_state[..., 0]
self.object_dof_vel = self.object_dof_state[..., 1]
self.rigid_body_states = gymtorch.wrap_tensor(rigid_body_tensor).view(self.num_envs, -1, 13)
self.num_bodies = self.rigid_body_states.shape[1]
self.root_state_tensor = gymtorch.wrap_tensor(actor_root_state_tensor).view(-1, 13)
self.hand_positions = self.root_state_tensor[:, 0:3]
self.hand_orientations = self.root_state_tensor[:, 3:7]
self.hand_linvels = self.root_state_tensor[:, 7:10]
self.hand_angvels = self.root_state_tensor[:, 10:13]
self.saved_root_tensor = self.root_state_tensor.clone()
self.num_dofs = self.gym.get_sim_dof_count(self.sim) // self.num_envs
self.prev_targets = torch.zeros((self.num_envs, self.num_dofs), dtype=torch.float, device=self.device)
self.cur_targets = torch.zeros((self.num_envs, self.num_dofs), dtype=torch.float, device=self.device)
self.global_indices = torch.arange(self.num_envs * 3, dtype=torch.int32, device=self.device).view(self.num_envs,
-1)
self.x_unit_tensor = to_torch([1, 0, 0], dtype=torch.float, device=self.device).repeat((self.num_envs, 1))
self.y_unit_tensor = to_torch([0, 1, 0], dtype=torch.float, device=self.device).repeat((self.num_envs, 1))
self.z_unit_tensor = to_torch([0, 0, 1], dtype=torch.float, device=self.device).repeat((self.num_envs, 1))
self.reset_goal_buf = self.reset_buf.clone()
self.successes = torch.zeros(self.num_envs, dtype=torch.float, device=self.device)
self.consecutive_successes = torch.zeros(1, dtype=torch.float, device=self.device)
self.av_factor = to_torch(self.av_factor, dtype=torch.float, device=self.device)
self.apply_forces = torch.zeros((self.num_envs, self.num_bodies, 3), device=self.device, dtype=torch.float)
self.apply_torque = torch.zeros((self.num_envs, self.num_bodies, 3), device=self.device, dtype=torch.float)
self.total_successes = 0
self.total_resets = 0
[docs] def create_sim(self):
"""
Allocates which device will simulate and which device will render the scene. Defines the simulation type to be used
"""
self.dt = self.sim_params.dt
self.up_axis_idx = self.set_sim_params_up_axis(self.sim_params, self.up_axis)
self.sim = super().create_sim(self.device_id, self.graphics_device_id, self.physics_engine, self.sim_params)
self._create_ground_plane()
self._create_envs(self.num_envs, self.cfg["env"]['envSpacing'], int(np.sqrt(self.num_envs)))
def _create_ground_plane(self):
"""
Adds ground plane to simulation
"""
plane_params = gymapi.PlaneParams()
plane_params.normal = gymapi.Vec3(0.0, 0.0, 1.0)
self.gym.add_ground(self.sim, plane_params)
def _create_envs(self, num_envs, spacing, num_per_row):
"""
Create multiple parallel isaacgym environments
Args:
num_envs (int): The total number of environment
spacing (float): Specifies half the side length of the square area occupied by each environment
num_per_row (int): Specify how many environments in a row
"""
lower = gymapi.Vec3(-spacing, -spacing, 0.0)
upper = gymapi.Vec3(spacing, spacing, spacing)
# get rofunc path from rofunc package metadata
rofunc_path = get_rofunc_path()
asset_root = os.path.join(rofunc_path, "simulator/assets")
shadow_hand_asset_file = "mjcf/open_ai_assets/hand/shadow_hand.xml"
shadow_hand_another_asset_file = "mjcf/open_ai_assets/hand/shadow_hand1.xml"
table_texture_files = os.path.join(asset_root, "textures/texture_stone_stone_texture_0.jpg")
table_texture_handle = self.gym.create_texture_from_file(self.sim, table_texture_files)
if "asset" in self.cfg["env"]:
asset_root = self.cfg["env"]["asset"].get("assetRoot", asset_root)
shadow_hand_asset_file = self.cfg["env"]["asset"].get("assetFileName", shadow_hand_asset_file)
# load ball asset
ball_asset = self.gym.create_sphere(self.sim, 0.005, gymapi.AssetOptions())
object_asset_file = self.asset_files_dict[self.object_type]
# load shadow hand_ asset
asset_options = gymapi.AssetOptions()
asset_options.flip_visual_attachments = False
asset_options.fix_base_link = False
asset_options.collapse_fixed_joints = True
asset_options.disable_gravity = True
asset_options.thickness = 0.001
asset_options.angular_damping = 100
asset_options.linear_damping = 100
if self.physics_engine == gymapi.SIM_PHYSX:
asset_options.use_physx_armature = True
asset_options.default_dof_drive_mode = gymapi.DOF_MODE_NONE
shadow_hand_asset = self.gym.load_asset(self.sim, asset_root, shadow_hand_asset_file, asset_options)
shadow_hand_another_asset = self.gym.load_asset(self.sim, asset_root, shadow_hand_another_asset_file,
asset_options)
self.num_shadow_hand_bodies = self.gym.get_asset_rigid_body_count(shadow_hand_asset)
self.num_shadow_hand_shapes = self.gym.get_asset_rigid_shape_count(shadow_hand_asset)
self.num_shadow_hand_dofs = self.gym.get_asset_dof_count(shadow_hand_asset)
self.num_shadow_hand_actuators = self.gym.get_asset_actuator_count(shadow_hand_asset)
self.num_shadow_hand_tendons = self.gym.get_asset_tendon_count(shadow_hand_asset)
print("self.num_shadow_hand_bodies: ", self.num_shadow_hand_bodies)
print("self.num_shadow_hand_shapes: ", self.num_shadow_hand_shapes)
print("self.num_shadow_hand_dofs: ", self.num_shadow_hand_dofs)
print("self.num_shadow_hand_actuators: ", self.num_shadow_hand_actuators)
print("self.num_shadow_hand_tendons: ", self.num_shadow_hand_tendons)
# tendon set up
limit_stiffness = 30
t_damping = 0.1
relevant_tendons = ["robot0:T_FFJ1c", "robot0:T_MFJ1c", "robot0:T_RFJ1c", "robot0:T_LFJ1c"]
a_relevant_tendons = ["robot1:T_FFJ1c", "robot1:T_MFJ1c", "robot1:T_RFJ1c", "robot1:T_LFJ1c"]
tendon_props = self.gym.get_asset_tendon_properties(shadow_hand_asset)
a_tendon_props = self.gym.get_asset_tendon_properties(shadow_hand_another_asset)
for i in range(self.num_shadow_hand_tendons):
for rt in relevant_tendons:
if self.gym.get_asset_tendon_name(shadow_hand_asset, i) == rt:
tendon_props[i].limit_stiffness = limit_stiffness
tendon_props[i].damping = t_damping
for rt in a_relevant_tendons:
if self.gym.get_asset_tendon_name(shadow_hand_another_asset, i) == rt:
a_tendon_props[i].limit_stiffness = limit_stiffness
a_tendon_props[i].damping = t_damping
self.gym.set_asset_tendon_properties(shadow_hand_asset, tendon_props)
self.gym.set_asset_tendon_properties(shadow_hand_another_asset, a_tendon_props)
actuated_dof_names = [self.gym.get_asset_actuator_joint_name(shadow_hand_asset, i) for i in
range(self.num_shadow_hand_actuators)]
self.actuated_dof_indices = [self.gym.find_asset_dof_index(shadow_hand_asset, name) for name in
actuated_dof_names]
# set shadow_hand dof properties
shadow_hand_dof_props = self.gym.get_asset_dof_properties(shadow_hand_asset)
shadow_hand_another_dof_props = self.gym.get_asset_dof_properties(shadow_hand_another_asset)
self.shadow_hand_dof_lower_limits = []
self.shadow_hand_dof_upper_limits = []
self.shadow_hand_dof_default_pos = []
self.shadow_hand_dof_default_vel = []
self.sensors = []
sensor_pose = gymapi.Transform()
for i in range(self.num_shadow_hand_dofs):
self.shadow_hand_dof_lower_limits.append(shadow_hand_dof_props['lower'][i])
self.shadow_hand_dof_upper_limits.append(shadow_hand_dof_props['upper'][i])
self.shadow_hand_dof_default_pos.append(0.0)
self.shadow_hand_dof_default_vel.append(0.0)
self.actuated_dof_indices = to_torch(self.actuated_dof_indices, dtype=torch.long, device=self.device)
self.shadow_hand_dof_lower_limits = to_torch(self.shadow_hand_dof_lower_limits, device=self.device)
self.shadow_hand_dof_upper_limits = to_torch(self.shadow_hand_dof_upper_limits, device=self.device)
self.shadow_hand_dof_default_pos = to_torch(self.shadow_hand_dof_default_pos, device=self.device)
self.shadow_hand_dof_default_vel = to_torch(self.shadow_hand_dof_default_vel, device=self.device)
# load manipulated object and goal assets
object_asset_options = gymapi.AssetOptions()
object_asset_options.density = 500
object_asset_options.fix_base_link = False
object_asset_options.default_dof_drive_mode = gymapi.DOF_MODE_NONE
# object_asset_options.use_mesh_materials = True
# object_asset_options.mesh_normal_mode = gymapi.COMPUTE_PER_VERTEX
# object_asset_options.override_com = True
# object_asset_options.override_inertia = True
# object_asset_options.vhacd_enabled = True
# object_asset_options.vhacd_params = gymapi.VhacdParams()
# object_asset_options.vhacd_params.resolution = 100000
object_asset = self.gym.load_asset(self.sim, asset_root, object_asset_file, object_asset_options)
object_asset_options.disable_gravity = True
goal_asset = self.gym.load_asset(self.sim, asset_root, object_asset_file, object_asset_options)
self.num_object_bodies = self.gym.get_asset_rigid_body_count(object_asset)
self.num_object_shapes = self.gym.get_asset_rigid_shape_count(object_asset)
# set object dof properties
self.num_object_dofs = self.gym.get_asset_dof_count(object_asset)
object_dof_props = self.gym.get_asset_dof_properties(object_asset)
self.object_dof_lower_limits = []
self.object_dof_upper_limits = []
for i in range(self.num_object_dofs):
self.object_dof_lower_limits.append(object_dof_props['lower'][i])
self.object_dof_upper_limits.append(object_dof_props['upper'][i])
self.object_dof_lower_limits = to_torch(self.object_dof_lower_limits, device=self.device)
self.object_dof_upper_limits = to_torch(self.object_dof_upper_limits, device=self.device)
# create table asset
table_dims = gymapi.Vec3(0.5, 1.0, 0.6)
asset_options = gymapi.AssetOptions()
asset_options.fix_base_link = True
asset_options.flip_visual_attachments = True
asset_options.collapse_fixed_joints = True
asset_options.disable_gravity = True
asset_options.thickness = 0.001
table_asset = self.gym.create_box(self.sim, table_dims.x, table_dims.y, table_dims.z, gymapi.AssetOptions())
shadow_hand_start_pose = gymapi.Transform()
shadow_hand_start_pose.p = gymapi.Vec3(0.55, 0.2, 0.8)
shadow_hand_start_pose.r = gymapi.Quat().from_euler_zyx(3.14159, 0, 1.57)
shadow_another_hand_start_pose = gymapi.Transform()
shadow_another_hand_start_pose.p = gymapi.Vec3(0.55, -0.2, 0.8)
shadow_another_hand_start_pose.r = gymapi.Quat().from_euler_zyx(3.14159, 0, 1.57)
object_start_pose = gymapi.Transform()
object_start_pose.p = gymapi.Vec3(0.0, 0., 0.6)
object_start_pose.r = gymapi.Quat().from_euler_zyx(0, 0, 1.57)
pose_dx, pose_dy, pose_dz = -1.0, 0.0, -0.0
# object_start_pose.p.x = shadow_hand_start_pose.p.x + pose_dx
# object_start_pose.p.y = shadow_hand_start_pose.p.y + pose_dy
# object_start_pose.p.z = shadow_hand_start_pose.p.z + pose_dz
if self.object_type == "pen":
object_start_pose.p.z = shadow_hand_start_pose.p.z + 0.02
self.goal_displacement = gymapi.Vec3(-0., 0.0, 10)
self.goal_displacement_tensor = to_torch(
[self.goal_displacement.x, self.goal_displacement.y, self.goal_displacement.z], device=self.device)
goal_start_pose = gymapi.Transform()
goal_start_pose.p = object_start_pose.p + self.goal_displacement
goal_start_pose.p.z -= 0.0
table_pose = gymapi.Transform()
table_pose.p = gymapi.Vec3(0.0, 0.0, 0.5 * table_dims.z)
table_pose.r = gymapi.Quat().from_euler_zyx(-0., 0, 0)
# compute aggregate size
max_agg_bodies = self.num_shadow_hand_bodies * 2 + 2 * self.num_object_bodies + 1
max_agg_shapes = self.num_shadow_hand_shapes * 2 + 2 * self.num_object_shapes + 1
self.shadow_hands = []
self.envs = []
self.object_init_state = []
self.hand_start_states = []
self.hand_indices = []
self.another_hand_indices = []
self.fingertip_indices = []
self.object_indices = []
self.goal_object_indices = []
self.table_indices = []
self.bucket_indices = []
self.ball_indices = []
self.fingertip_handles = [self.gym.find_asset_rigid_body_index(shadow_hand_asset, name) for name in
self.fingertips]
self.fingertip_another_handles = [self.gym.find_asset_rigid_body_index(shadow_hand_another_asset, name) for name
in self.a_fingertips]
# create fingertip force sensors, if needed
sensor_pose = gymapi.Transform()
for ft_handle in self.fingertip_handles:
self.gym.create_asset_force_sensor(shadow_hand_asset, ft_handle, sensor_pose)
for ft_a_handle in self.fingertip_another_handles:
self.gym.create_asset_force_sensor(shadow_hand_another_asset, ft_a_handle, sensor_pose)
if self.obs_type in ["point_cloud"]:
self.cameras = []
self.camera_tensors = []
self.camera_view_matrixs = []
self.camera_proj_matrixs = []
self.camera_props = gymapi.CameraProperties()
self.camera_props.width = 256
self.camera_props.height = 256
self.camera_props.enable_tensors = True
self.env_origin = torch.zeros((self.num_envs, 3), device=self.device, dtype=torch.float)
self.pointCloudDownsampleNum = 768
self.camera_u = torch.arange(0, self.camera_props.width, device=self.device)
self.camera_v = torch.arange(0, self.camera_props.height, device=self.device)
self.camera_v2, self.camera_u2 = torch.meshgrid(self.camera_v, self.camera_u, indexing='ij')
if self.point_cloud_debug:
import open3d as o3d
from bidexhands.utils.o3dviewer import PointcloudVisualizer
self.pointCloudVisualizer = PointcloudVisualizer()
self.pointCloudVisualizerInitialized = False
self.o3d_pc = o3d.geometry.PointCloud()
else:
self.pointCloudVisualizer = None
for i in range(self.num_envs):
# create env instance
env_ptr = self.gym.create_env(
self.sim, lower, upper, num_per_row
)
if self.aggregate_mode >= 1:
self.gym.begin_aggregate(env_ptr, max_agg_bodies, max_agg_shapes, True)
# add hand - collision filter = -1 to use asset collision filters set in mjcf loader
shadow_hand_actor = self.gym.create_actor(env_ptr, shadow_hand_asset, shadow_hand_start_pose, "hand", i, 0,
0)
shadow_hand_another_actor = self.gym.create_actor(env_ptr, shadow_hand_another_asset,
shadow_another_hand_start_pose, "another_hand", i, 0, 0)
self.hand_start_states.append(
[shadow_hand_start_pose.p.x, shadow_hand_start_pose.p.y, shadow_hand_start_pose.p.z,
shadow_hand_start_pose.r.x, shadow_hand_start_pose.r.y, shadow_hand_start_pose.r.z,
shadow_hand_start_pose.r.w,
0, 0, 0, 0, 0, 0])
self.gym.set_actor_dof_properties(env_ptr, shadow_hand_actor, shadow_hand_dof_props)
hand_idx = self.gym.get_actor_index(env_ptr, shadow_hand_actor, gymapi.DOMAIN_SIM)
self.hand_indices.append(hand_idx)
self.gym.set_actor_dof_properties(env_ptr, shadow_hand_another_actor, shadow_hand_another_dof_props)
another_hand_idx = self.gym.get_actor_index(env_ptr, shadow_hand_another_actor, gymapi.DOMAIN_SIM)
self.another_hand_indices.append(another_hand_idx)
# randomize colors and textures for rigid body
num_bodies = self.gym.get_actor_rigid_body_count(env_ptr, shadow_hand_actor)
hand_rigid_body_index = [[0, 1, 2, 3], [4, 5, 6, 7], [8, 9, 10, 11], [12, 13, 14, 15], [16, 17, 18, 19, 20],
[21, 22, 23, 24, 25]]
for n in self.agent_index[0]:
colorx = random.uniform(0, 1)
colory = random.uniform(0, 1)
colorz = random.uniform(0, 1)
for m in n:
for o in hand_rigid_body_index[m]:
self.gym.set_rigid_body_color(env_ptr, shadow_hand_actor, o, gymapi.MESH_VISUAL,
gymapi.Vec3(colorx, colory, colorz))
for n in self.agent_index[1]:
colorx = random.uniform(0, 1)
colory = random.uniform(0, 1)
colorz = random.uniform(0, 1)
for m in n:
for o in hand_rigid_body_index[m]:
self.gym.set_rigid_body_color(env_ptr, shadow_hand_another_actor, o, gymapi.MESH_VISUAL,
gymapi.Vec3(colorx, colory, colorz))
# gym.set_rigid_body_texture(env, actor_handles[-1], n, gymapi.MESH_VISUAL,
# loaded_texture_handle_list[random.randint(0, len(loaded_texture_handle_list)-1)])
# create fingertip force-torque sensors
self.gym.enable_actor_dof_force_sensors(env_ptr, shadow_hand_actor)
self.gym.enable_actor_dof_force_sensors(env_ptr, shadow_hand_another_actor)
# add object
object_handle = self.gym.create_actor(env_ptr, object_asset, object_start_pose, "object", i, 0, 0)
self.object_init_state.append([object_start_pose.p.x, object_start_pose.p.y, object_start_pose.p.z,
object_start_pose.r.x, object_start_pose.r.y, object_start_pose.r.z,
object_start_pose.r.w,
0, 0, 0, 0, 0, 0])
self.gym.set_actor_dof_properties(env_ptr, object_handle, object_dof_props)
object_idx = self.gym.get_actor_index(env_ptr, object_handle, gymapi.DOMAIN_SIM)
self.object_indices.append(object_idx)
# self.gym.set_actor_scale(env_ptr, object_handle, 0.3)
# add goal object
goal_handle = self.gym.create_actor(env_ptr, goal_asset, goal_start_pose, "goal_object", i + self.num_envs,
0, 0)
goal_object_idx = self.gym.get_actor_index(env_ptr, goal_handle, gymapi.DOMAIN_SIM)
self.goal_object_indices.append(goal_object_idx)
# self.gym.set_actor_scale(env_ptr, goal_handle, 0.3)
# add table
table_handle = self.gym.create_actor(env_ptr, table_asset, table_pose, "table", i, 0, 0)
self.gym.set_rigid_body_texture(env_ptr, table_handle, 0, gymapi.MESH_VISUAL, table_texture_handle)
table_idx = self.gym.get_actor_index(env_ptr, table_handle, gymapi.DOMAIN_SIM)
self.table_indices.append(table_idx)
# object_dof_props = self.gym.get_actor_dof_properties(env_ptr, object_handle)
# for object_dof_prop in object_dof_props:
# object_dof_prop[4] = 1
# object_dof_prop[5] = 0
# object_dof_prop[6] = 0
# object_dof_prop[7] = 0
# self.gym.set_actor_dof_properties(env_ptr, object_handle, object_dof_props)
# set friction
another_hand_shape_props = self.gym.get_actor_rigid_shape_properties(env_ptr, shadow_hand_another_actor)
object_shape_props = self.gym.get_actor_rigid_shape_properties(env_ptr, object_handle)
another_hand_shape_props[0].friction = 1
object_shape_props[0].friction = 1
self.gym.set_actor_rigid_shape_properties(env_ptr, shadow_hand_another_actor, another_hand_shape_props)
self.gym.set_actor_rigid_shape_properties(env_ptr, object_handle, object_shape_props)
if self.object_type != "block":
self.gym.set_rigid_body_color(
env_ptr, object_handle, 0, gymapi.MESH_VISUAL, gymapi.Vec3(0.6, 0.72, 0.98))
self.gym.set_rigid_body_color(
env_ptr, goal_handle, 0, gymapi.MESH_VISUAL, gymapi.Vec3(0.6, 0.72, 0.98))
if self.obs_type in ["point_cloud"]:
camera_handle = self.gym.create_camera_sensor(env_ptr, self.camera_props)
self.gym.set_camera_location(camera_handle, env_ptr, gymapi.Vec3(0.25, -0., 1.0),
gymapi.Vec3(-0.24, -0., 0))
camera_tensor = self.gym.get_camera_image_gpu_tensor(self.sim, env_ptr, camera_handle,
gymapi.IMAGE_DEPTH)
torch_cam_tensor = gymtorch.wrap_tensor(camera_tensor)
cam_vinv = torch.inverse(
(torch.tensor(self.gym.get_camera_view_matrix(self.sim, env_ptr, camera_handle)))).to(self.device)
cam_proj = torch.tensor(self.gym.get_camera_proj_matrix(self.sim, env_ptr, camera_handle),
device=self.device)
origin = self.gym.get_env_origin(env_ptr)
self.env_origin[i][0] = origin.x
self.env_origin[i][1] = origin.y
self.env_origin[i][2] = origin.z
self.camera_tensors.append(torch_cam_tensor)
self.camera_view_matrixs.append(cam_vinv)
self.camera_proj_matrixs.append(cam_proj)
self.cameras.append(camera_handle)
if self.aggregate_mode > 0:
self.gym.end_aggregate(env_ptr)
self.envs.append(env_ptr)
self.shadow_hands.append(shadow_hand_actor)
self.object_init_state = to_torch(self.object_init_state, device=self.device, dtype=torch.float).view(
self.num_envs, 13)
self.goal_states = self.object_init_state.clone()
# self.goal_pose = self.goal_states[:, 0:7]
# self.goal_pos = self.goal_states[:, 0:3]
# self.goal_rot = self.goal_states[:, 3:7]
# self.goal_states[:, self.up_axis_idx] -= 0.04
self.goal_init_state = self.goal_states.clone()
self.hand_start_states = to_torch(self.hand_start_states, device=self.device).view(self.num_envs, 13)
self.fingertip_handles = to_torch(self.fingertip_handles, dtype=torch.long, device=self.device)
self.fingertip_another_handles = to_torch(self.fingertip_another_handles, dtype=torch.long, device=self.device)
self.hand_indices = to_torch(self.hand_indices, dtype=torch.long, device=self.device)
self.another_hand_indices = to_torch(self.another_hand_indices, dtype=torch.long, device=self.device)
self.object_indices = to_torch(self.object_indices, dtype=torch.long, device=self.device)
self.goal_object_indices = to_torch(self.goal_object_indices, dtype=torch.long, device=self.device)
self.table_indices = to_torch(self.table_indices, dtype=torch.long, device=self.device)
self.bucket_indices = to_torch(self.bucket_indices, dtype=torch.long, device=self.device)
self.ball_indices = to_torch(self.ball_indices, dtype=torch.long, device=self.device)
[docs] def compute_reward(self, actions):
"""
Compute the reward of all environment. The core function is compute_hand_reward(
self.rew_buf, self.reset_buf, self.reset_goal_buf, self.progress_buf, self.successes, self.consecutive_successes,
self.max_episode_length, self.object_pos, self.object_rot, self.goal_pos, self.goal_rot, self.scissors_right_handle_pos, self.scissors_left_handle_pos, self.object_dof_pos,
self.left_hand_pos, self.right_hand_pos, self.right_hand_ff_pos, self.right_hand_mf_pos, self.right_hand_rf_pos, self.right_hand_lf_pos, self.right_hand_th_pos,
self.left_hand_ff_pos, self.left_hand_mf_pos, self.left_hand_rf_pos, self.left_hand_lf_pos, self.left_hand_th_pos,
self.dist_reward_scale, self.rot_reward_scale, self.rot_eps, self.actions, self.action_penalty_scale,
self.success_tolerance, self.reach_goal_bonus, self.fall_dist, self.fall_penalty,
self.max_consecutive_successes, self.av_factor, (self.object_type == "pen")
)
, which we will introduce in detail there
Args:
actions (tensor): Actions of agents in the all environment
"""
self.rew_buf[:], self.reset_buf[:], self.reset_goal_buf[:], self.progress_buf[:], self.successes[
:], self.consecutive_successes[
:] = compute_hand_reward(
self.rew_buf, self.reset_buf, self.reset_goal_buf, self.progress_buf, self.successes,
self.consecutive_successes,
self.max_episode_length, self.object_pos, self.object_rot, self.goal_pos, self.goal_rot,
self.scissors_right_handle_pos, self.scissors_left_handle_pos, self.object_dof_pos,
self.left_hand_pos, self.right_hand_pos, self.right_hand_ff_pos, self.right_hand_mf_pos,
self.right_hand_rf_pos, self.right_hand_lf_pos, self.right_hand_th_pos,
self.left_hand_ff_pos, self.left_hand_mf_pos, self.left_hand_rf_pos, self.left_hand_lf_pos,
self.left_hand_th_pos,
self.dist_reward_scale, self.rot_reward_scale, self.rot_eps, self.actions, self.action_penalty_scale,
self.success_tolerance, self.reach_goal_bonus, self.fall_dist, self.fall_penalty,
self.max_consecutive_successes, self.av_factor, (self.object_type == "pen")
)
self.extras['successes'] = self.successes
self.extras['consecutive_successes'] = self.consecutive_successes
if self.print_success_stat:
self.total_resets = self.total_resets + self.reset_buf.sum()
direct_average_successes = self.total_successes + self.successes.sum()
self.total_successes = self.total_successes + (self.successes * self.reset_buf).sum()
# The direct average shows the overall result more quickly, but slightly undershoots long term
# policy performance.
print("Direct average consecutive successes = {:.1f}".format(
direct_average_successes / (self.total_resets + self.num_envs)))
if self.total_resets > 0:
print("Post-Reset average consecutive successes = {:.1f}".format(
self.total_successes / self.total_resets))
[docs] def compute_observations(self):
"""
Compute the observations of all environment. The core function is self.compute_full_state(True),
which we will introduce in detail there
"""
self.gym.refresh_dof_state_tensor(self.sim)
self.gym.refresh_actor_root_state_tensor(self.sim)
self.gym.refresh_rigid_body_state_tensor(self.sim)
self.gym.refresh_force_sensor_tensor(self.sim)
self.gym.refresh_dof_force_tensor(self.sim)
if self.obs_type in ["point_cloud"]:
self.gym.render_all_camera_sensors(self.sim)
self.gym.start_access_image_tensors(self.sim)
self.object_pose = self.root_state_tensor[self.object_indices, 0:7]
self.object_pos = self.root_state_tensor[self.object_indices, 0:3]
self.object_rot = self.root_state_tensor[self.object_indices, 3:7]
self.object_linvel = self.root_state_tensor[self.object_indices, 7:10]
self.object_angvel = self.root_state_tensor[self.object_indices, 10:13]
self.scissors_right_handle_pos = self.rigid_body_states[:, 26 * 2 + 2, 0:3]
self.scissors_right_handle_rot = self.rigid_body_states[:, 26 * 2 + 2, 3:7]
self.scissors_right_handle_pos = self.scissors_right_handle_pos + quat_apply(self.scissors_right_handle_rot,
to_torch([0, 1, 0],
device=self.device).repeat(
self.num_envs, 1) * -0.)
self.scissors_right_handle_pos = self.scissors_right_handle_pos + quat_apply(self.scissors_right_handle_rot,
to_torch([1, 0, 0],
device=self.device).repeat(
self.num_envs, 1) * 0.2)
self.scissors_right_handle_pos = self.scissors_right_handle_pos + quat_apply(self.scissors_right_handle_rot,
to_torch([0, 0, 1],
device=self.device).repeat(
self.num_envs, 1) * -0.1)
self.scissors_left_handle_pos = self.rigid_body_states[:, 26 * 2 + 1, 0:3]
self.scissors_left_handle_rot = self.rigid_body_states[:, 26 * 2 + 1, 3:7]
self.scissors_left_handle_pos = self.scissors_left_handle_pos + quat_apply(self.scissors_left_handle_rot,
to_torch([0, 1, 0],
device=self.device).repeat(
self.num_envs, 1) * 0.0)
self.scissors_left_handle_pos = self.scissors_left_handle_pos + quat_apply(self.scissors_left_handle_rot,
to_torch([1, 0, 0],
device=self.device).repeat(
self.num_envs, 1) * 0.15)
self.scissors_left_handle_pos = self.scissors_left_handle_pos + quat_apply(self.scissors_left_handle_rot,
to_torch([0, 0, 1],
device=self.device).repeat(
self.num_envs, 1) * 0.1)
self.left_hand_pos = self.rigid_body_states[:, 3 + 26, 0:3]
self.left_hand_rot = self.rigid_body_states[:, 3 + 26, 3:7]
self.left_hand_pos = self.left_hand_pos + quat_apply(self.left_hand_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.08)
self.left_hand_pos = self.left_hand_pos + quat_apply(self.left_hand_rot,
to_torch([0, 1, 0], device=self.device).repeat(
self.num_envs, 1) * -0.02)
self.right_hand_pos = self.rigid_body_states[:, 3, 0:3]
self.right_hand_rot = self.rigid_body_states[:, 3, 3:7]
self.right_hand_pos = self.right_hand_pos + quat_apply(self.right_hand_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.08)
self.right_hand_pos = self.right_hand_pos + quat_apply(self.right_hand_rot,
to_torch([0, 1, 0], device=self.device).repeat(
self.num_envs, 1) * -0.02)
# right hand finger
self.right_hand_ff_pos = self.rigid_body_states[:, 7, 0:3]
self.right_hand_ff_rot = self.rigid_body_states[:, 7, 3:7]
self.right_hand_ff_pos = self.right_hand_ff_pos + quat_apply(self.right_hand_ff_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.right_hand_mf_pos = self.rigid_body_states[:, 11, 0:3]
self.right_hand_mf_rot = self.rigid_body_states[:, 11, 3:7]
self.right_hand_mf_pos = self.right_hand_mf_pos + quat_apply(self.right_hand_mf_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.right_hand_rf_pos = self.rigid_body_states[:, 15, 0:3]
self.right_hand_rf_rot = self.rigid_body_states[:, 15, 3:7]
self.right_hand_rf_pos = self.right_hand_rf_pos + quat_apply(self.right_hand_rf_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.right_hand_lf_pos = self.rigid_body_states[:, 20, 0:3]
self.right_hand_lf_rot = self.rigid_body_states[:, 20, 3:7]
self.right_hand_lf_pos = self.right_hand_lf_pos + quat_apply(self.right_hand_lf_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.right_hand_th_pos = self.rigid_body_states[:, 25, 0:3]
self.right_hand_th_rot = self.rigid_body_states[:, 25, 3:7]
self.right_hand_th_pos = self.right_hand_th_pos + quat_apply(self.right_hand_th_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.left_hand_ff_pos = self.rigid_body_states[:, 7 + 26, 0:3]
self.left_hand_ff_rot = self.rigid_body_states[:, 7 + 26, 3:7]
self.left_hand_ff_pos = self.left_hand_ff_pos + quat_apply(self.left_hand_ff_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.left_hand_mf_pos = self.rigid_body_states[:, 11 + 26, 0:3]
self.left_hand_mf_rot = self.rigid_body_states[:, 11 + 26, 3:7]
self.left_hand_mf_pos = self.left_hand_mf_pos + quat_apply(self.left_hand_mf_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.left_hand_rf_pos = self.rigid_body_states[:, 15 + 26, 0:3]
self.left_hand_rf_rot = self.rigid_body_states[:, 15 + 26, 3:7]
self.left_hand_rf_pos = self.left_hand_rf_pos + quat_apply(self.left_hand_rf_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.left_hand_lf_pos = self.rigid_body_states[:, 20 + 26, 0:3]
self.left_hand_lf_rot = self.rigid_body_states[:, 20 + 26, 3:7]
self.left_hand_lf_pos = self.left_hand_lf_pos + quat_apply(self.left_hand_lf_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.left_hand_th_pos = self.rigid_body_states[:, 25 + 26, 0:3]
self.left_hand_th_rot = self.rigid_body_states[:, 25 + 26, 3:7]
self.left_hand_th_pos = self.left_hand_th_pos + quat_apply(self.left_hand_th_rot,
to_torch([0, 0, 1], device=self.device).repeat(
self.num_envs, 1) * 0.02)
self.goal_pose = self.goal_states[:, 0:7]
self.goal_pos = self.goal_states[:, 0:3]
self.goal_rot = self.goal_states[:, 3:7]
self.fingertip_state = self.rigid_body_states[:, self.fingertip_handles][:, :, 0:13]
self.fingertip_pos = self.rigid_body_states[:, self.fingertip_handles][:, :, 0:3]
self.fingertip_another_state = self.rigid_body_states[:, self.fingertip_another_handles][:, :, 0:13]
self.fingertip_another_pos = self.rigid_body_states[:, self.fingertip_another_handles][:, :, 0:3]
if self.obs_type == "full_state":
self.compute_full_state()
elif self.obs_type == "point_cloud":
self.compute_point_cloud_observation()
if self.asymmetric_obs:
self.compute_full_state(True)
[docs] def compute_full_state(self, asymm_obs=False):
"""
Compute the observations of all environment. The observation is composed of three parts:
the state values of the left and right hands, and the information of objects and target.
The state values of the left and right hands were the same for each task, including hand
joint and finger positions, velocity, and force information. The detail 428-dimensional
observational space as shown in below:
Index Description
0 - 23 right shadow hand dof position
24 - 47 right shadow hand dof velocity
48 - 71 right shadow hand dof force
72 - 136 right shadow hand fingertip pose, linear velocity, angle velocity (5 x 13)
137 - 166 right shadow hand fingertip force, torque (5 x 6)
167 - 169 right shadow hand base position
170 - 172 right shadow hand base rotation
173 - 198 right shadow hand actions
199 - 222 left shadow hand dof position
223 - 246 left shadow hand dof velocity
247 - 270 left shadow hand dof force
271 - 335 left shadow hand fingertip pose, linear velocity, angle velocity (5 x 13)
336 - 365 left shadow hand fingertip force, torque (5 x 6)
366 - 368 left shadow hand base position
369 - 371 left shadow hand base rotation
372 - 397 left shadow hand actions
398 - 404 object pose
405 - 407 object linear velocity
408 - 410 object angle velocity
411 - 417 goal pose
418 - 421 goal rot - object rot
422 - 424 scissors right handle position
425 - 427 scissors left handle position
"""
num_ft_states = 13 * int(self.num_fingertips / 2) # 65
num_ft_force_torques = 6 * int(self.num_fingertips / 2) # 30
self.obs_buf[:, 0:self.num_shadow_hand_dofs] = unscale(self.shadow_hand_dof_pos,
self.shadow_hand_dof_lower_limits,
self.shadow_hand_dof_upper_limits)
self.obs_buf[:,
self.num_shadow_hand_dofs:2 * self.num_shadow_hand_dofs] = self.vel_obs_scale * self.shadow_hand_dof_vel
self.obs_buf[:,
2 * self.num_shadow_hand_dofs:3 * self.num_shadow_hand_dofs] = self.force_torque_obs_scale * self.dof_force_tensor[
:, :24]
fingertip_obs_start = 72 # 168 = 157 + 11
self.obs_buf[:, fingertip_obs_start:fingertip_obs_start + num_ft_states] = self.fingertip_state.reshape(
self.num_envs, num_ft_states)
self.obs_buf[:, fingertip_obs_start + num_ft_states:fingertip_obs_start + num_ft_states +
num_ft_force_torques] = self.force_torque_obs_scale * self.vec_sensor_tensor[
:,
:30]
hand_pose_start = fingertip_obs_start + 95
self.obs_buf[:, hand_pose_start:hand_pose_start + 3] = self.right_hand_pos
self.obs_buf[:, hand_pose_start + 3:hand_pose_start + 4] = \
get_euler_xyz(self.hand_orientations[self.hand_indices, :])[0].unsqueeze(-1)
self.obs_buf[:, hand_pose_start + 4:hand_pose_start + 5] = \
get_euler_xyz(self.hand_orientations[self.hand_indices, :])[1].unsqueeze(-1)
self.obs_buf[:, hand_pose_start + 5:hand_pose_start + 6] = \
get_euler_xyz(self.hand_orientations[self.hand_indices, :])[2].unsqueeze(-1)
action_obs_start = hand_pose_start + 6
self.obs_buf[:, action_obs_start:action_obs_start + 26] = self.actions[:, :26]
# another_hand
another_hand_start = action_obs_start + 26
self.obs_buf[:, another_hand_start:self.num_shadow_hand_dofs + another_hand_start] = unscale(
self.shadow_hand_another_dof_pos,
self.shadow_hand_dof_lower_limits, self.shadow_hand_dof_upper_limits)
self.obs_buf[:,
self.num_shadow_hand_dofs + another_hand_start:2 * self.num_shadow_hand_dofs + another_hand_start] = self.vel_obs_scale * self.shadow_hand_another_dof_vel
self.obs_buf[:,
2 * self.num_shadow_hand_dofs + another_hand_start:3 * self.num_shadow_hand_dofs + another_hand_start] = self.force_torque_obs_scale * self.dof_force_tensor[
:,
24:48]
fingertip_another_obs_start = another_hand_start + 72
self.obs_buf[:,
fingertip_another_obs_start:fingertip_another_obs_start + num_ft_states] = self.fingertip_another_state.reshape(
self.num_envs, num_ft_states)
self.obs_buf[:, fingertip_another_obs_start + num_ft_states:fingertip_another_obs_start + num_ft_states +
num_ft_force_torques] = self.force_torque_obs_scale * self.vec_sensor_tensor[
:,
30:]
hand_another_pose_start = fingertip_another_obs_start + 95
self.obs_buf[:, hand_another_pose_start:hand_another_pose_start + 3] = self.left_hand_pos
self.obs_buf[:, hand_another_pose_start + 3:hand_another_pose_start + 4] = \
get_euler_xyz(self.hand_orientations[self.another_hand_indices, :])[0].unsqueeze(-1)
self.obs_buf[:, hand_another_pose_start + 4:hand_another_pose_start + 5] = \
get_euler_xyz(self.hand_orientations[self.another_hand_indices, :])[1].unsqueeze(-1)
self.obs_buf[:, hand_another_pose_start + 5:hand_another_pose_start + 6] = \
get_euler_xyz(self.hand_orientations[self.another_hand_indices, :])[2].unsqueeze(-1)
action_another_obs_start = hand_another_pose_start + 6
self.obs_buf[:, action_another_obs_start:action_another_obs_start + 26] = self.actions[:, 26:]
obj_obs_start = action_another_obs_start + 26 # 144
self.obs_buf[:, obj_obs_start:obj_obs_start + 7] = self.object_pose
self.obs_buf[:, obj_obs_start + 7:obj_obs_start + 10] = self.object_linvel
self.obs_buf[:, obj_obs_start + 10:obj_obs_start + 13] = self.vel_obs_scale * self.object_angvel
self.obs_buf[:, obj_obs_start + 13:obj_obs_start + 16] = self.scissors_right_handle_pos
self.obs_buf[:, obj_obs_start + 16:obj_obs_start + 19] = self.scissors_left_handle_pos
# goal_obs_start = obj_obs_start + 13 # 157 = 144 + 13
# self.obs_buf[:, goal_obs_start:goal_obs_start + 7] = self.goal_pose
# self.obs_buf[:, goal_obs_start + 7:goal_obs_start + 11] = quat_mul(self.object_rot, quat_conjugate(self.goal_rot))
[docs] def compute_point_cloud_observation(self, collect_demonstration=False):
"""
Compute the observations of all environment. The observation is composed of three parts:
the state values of the left and right hands, and the information of objects and target.
The state values of the left and right hands were the same for each task, including hand
joint and finger positions, velocity, and force information. The detail 428-dimensional
observational space as shown in below:
Index Description
0 - 23 right shadow hand dof position
24 - 47 right shadow hand dof velocity
48 - 71 right shadow hand dof force
72 - 136 right shadow hand fingertip pose, linear velocity, angle velocity (5 x 13)
137 - 166 right shadow hand fingertip force, torque (5 x 6)
167 - 169 right shadow hand base position
170 - 172 right shadow hand base rotation
173 - 198 right shadow hand actions
199 - 222 left shadow hand dof position
223 - 246 left shadow hand dof velocity
247 - 270 left shadow hand dof force
271 - 335 left shadow hand fingertip pose, linear velocity, angle velocity (5 x 13)
336 - 365 left shadow hand fingertip force, torque (5 x 6)
366 - 368 left shadow hand base position
369 - 371 left shadow hand base rotation
372 - 397 left shadow hand actions
398 - 404 object pose
405 - 407 object linear velocity
408 - 410 object angle velocity
411 - 417 goal pose
418 - 421 goal rot - object rot
422 - 424 scissors right handle position
425 - 427 scissors left handle position
"""
num_ft_states = 13 * int(self.num_fingertips / 2) # 65
num_ft_force_torques = 6 * int(self.num_fingertips / 2) # 30
self.obs_buf[:, 0:self.num_shadow_hand_dofs] = unscale(self.shadow_hand_dof_pos,
self.shadow_hand_dof_lower_limits,
self.shadow_hand_dof_upper_limits)
self.obs_buf[:,
self.num_shadow_hand_dofs:2 * self.num_shadow_hand_dofs] = self.vel_obs_scale * self.shadow_hand_dof_vel
self.obs_buf[:,
2 * self.num_shadow_hand_dofs:3 * self.num_shadow_hand_dofs] = self.force_torque_obs_scale * self.dof_force_tensor[
:, :24]
fingertip_obs_start = 72 # 168 = 157 + 11
self.obs_buf[:, fingertip_obs_start:fingertip_obs_start + num_ft_states] = self.fingertip_state.reshape(
self.num_envs, num_ft_states)
self.obs_buf[:, fingertip_obs_start + num_ft_states:fingertip_obs_start + num_ft_states +
num_ft_force_torques] = self.force_torque_obs_scale * self.vec_sensor_tensor[
:,
:30]
hand_pose_start = fingertip_obs_start + 95
self.obs_buf[:, hand_pose_start:hand_pose_start + 3] = self.right_hand_pos
self.obs_buf[:, hand_pose_start + 3:hand_pose_start + 4] = \
get_euler_xyz(self.hand_orientations[self.hand_indices, :])[0].unsqueeze(-1)
self.obs_buf[:, hand_pose_start + 4:hand_pose_start + 5] = \
get_euler_xyz(self.hand_orientations[self.hand_indices, :])[1].unsqueeze(-1)
self.obs_buf[:, hand_pose_start + 5:hand_pose_start + 6] = \
get_euler_xyz(self.hand_orientations[self.hand_indices, :])[2].unsqueeze(-1)
action_obs_start = hand_pose_start + 6
self.obs_buf[:, action_obs_start:action_obs_start + 26] = self.actions[:, :26]
# another_hand
another_hand_start = action_obs_start + 26
self.obs_buf[:, another_hand_start:self.num_shadow_hand_dofs + another_hand_start] = unscale(
self.shadow_hand_another_dof_pos,
self.shadow_hand_dof_lower_limits, self.shadow_hand_dof_upper_limits)
self.obs_buf[:,
self.num_shadow_hand_dofs + another_hand_start:2 * self.num_shadow_hand_dofs + another_hand_start] = self.vel_obs_scale * self.shadow_hand_another_dof_vel
self.obs_buf[:,
2 * self.num_shadow_hand_dofs + another_hand_start:3 * self.num_shadow_hand_dofs + another_hand_start] = self.force_torque_obs_scale * self.dof_force_tensor[
:,
24:48]
fingertip_another_obs_start = another_hand_start + 72
self.obs_buf[:,
fingertip_another_obs_start:fingertip_another_obs_start + num_ft_states] = self.fingertip_another_state.reshape(
self.num_envs, num_ft_states)
self.obs_buf[:, fingertip_another_obs_start + num_ft_states:fingertip_another_obs_start + num_ft_states +
num_ft_force_torques] = self.force_torque_obs_scale * self.vec_sensor_tensor[
:,
30:]
hand_another_pose_start = fingertip_another_obs_start + 95
self.obs_buf[:, hand_another_pose_start:hand_another_pose_start + 3] = self.left_hand_pos
self.obs_buf[:, hand_another_pose_start + 3:hand_another_pose_start + 4] = \
get_euler_xyz(self.hand_orientations[self.another_hand_indices, :])[0].unsqueeze(-1)
self.obs_buf[:, hand_another_pose_start + 4:hand_another_pose_start + 5] = \
get_euler_xyz(self.hand_orientations[self.another_hand_indices, :])[1].unsqueeze(-1)
self.obs_buf[:, hand_another_pose_start + 5:hand_another_pose_start + 6] = \
get_euler_xyz(self.hand_orientations[self.another_hand_indices, :])[2].unsqueeze(-1)
action_another_obs_start = hand_another_pose_start + 6
self.obs_buf[:, action_another_obs_start:action_another_obs_start + 26] = self.actions[:, 26:]
obj_obs_start = action_another_obs_start + 26 # 144
self.obs_buf[:, obj_obs_start:obj_obs_start + 7] = self.object_pose
self.obs_buf[:, obj_obs_start + 7:obj_obs_start + 10] = self.object_linvel
self.obs_buf[:, obj_obs_start + 10:obj_obs_start + 13] = self.vel_obs_scale * self.object_angvel
self.obs_buf[:, obj_obs_start + 13:obj_obs_start + 16] = self.scissors_right_handle_pos
self.obs_buf[:, obj_obs_start + 16:obj_obs_start + 19] = self.scissors_left_handle_pos
# goal_obs_start = obj_obs_start + 13 # 157 = 144 + 13
# self.obs_buf[:, goal_obs_start:goal_obs_start + 7] = self.goal_pose
# self.obs_buf[:, goal_obs_start + 7:goal_obs_start + 11] = quat_mul(self.object_rot, quat_conjugate(self.goal_rot))
point_clouds = torch.zeros((self.num_envs, self.pointCloudDownsampleNum, 3), device=self.device)
if self.camera_debug:
import matplotlib.pyplot as plt
self.camera_rgba_debug_fig = plt.figure("CAMERA_RGBD_DEBUG")
camera_rgba_image = self.camera_visulization(is_depth_image=False)
plt.imshow(camera_rgba_image)
plt.pause(1e-9)
for i in range(self.num_envs):
# Here is an example. In practice, it's better not to convert tensor from GPU to CPU
points = depth_image_to_point_cloud_GPU(self.camera_tensors[i], self.camera_view_matrixs[i],
self.camera_proj_matrixs[i], self.camera_u2, self.camera_v2,
self.camera_props.width, self.camera_props.height, 10, self.device)
if points.shape[0] > 0:
selected_points = self.sample_points(points, sample_num=self.pointCloudDownsampleNum,
sample_mathed='random')
else:
selected_points = torch.zeros((self.num_envs, self.pointCloudDownsampleNum, 3), device=self.device)
point_clouds[i] = selected_points
if self.pointCloudVisualizer != None:
import open3d as o3d
points = point_clouds[0, :, :3].cpu().numpy()
# colors = plt.get_cmap()(point_clouds[0, :, 3].cpu().numpy())
self.o3d_pc.points = o3d.utility.Vector3dVector(points)
# self.o3d_pc.colors = o3d.utility.Vector3dVector(colors[..., :3])
if self.pointCloudVisualizerInitialized == False:
self.pointCloudVisualizer.add_geometry(self.o3d_pc)
self.pointCloudVisualizerInitialized = True
else:
self.pointCloudVisualizer.update(self.o3d_pc)
self.gym.end_access_image_tensors(self.sim)
point_clouds -= self.env_origin.view(self.num_envs, 1, 3)
point_clouds_start = obj_obs_start + 19
self.obs_buf[:, point_clouds_start:].copy_(point_clouds.view(self.num_envs, self.pointCloudDownsampleNum * 3))
[docs] def reset_target_pose(self, env_ids, apply_reset=False):
"""
Reset and randomize the goal pose
Args:
env_ids (tensor): The index of the environment that needs to reset goal pose
apply_reset (bool): Whether to reset the goal directly here, usually used
when the same task wants to complete multiple goals
"""
rand_floats = torch_rand_float(-1.0, 1.0, (len(env_ids), 4), device=self.device)
new_rot = randomize_rotation(rand_floats[:, 0], rand_floats[:, 1], self.x_unit_tensor[env_ids],
self.y_unit_tensor[env_ids])
self.goal_states[env_ids, 0:3] = self.goal_init_state[env_ids, 0:3]
# self.goal_states[env_ids, 1] -= 0.25
self.goal_states[env_ids, 2] += 10.0
# self.goal_states[env_ids, 3:7] = new_rot
self.root_state_tensor[self.goal_object_indices[env_ids], 0:3] = self.goal_states[env_ids,
0:3] + self.goal_displacement_tensor
self.root_state_tensor[self.goal_object_indices[env_ids], 3:7] = self.goal_states[env_ids, 3:7]
self.root_state_tensor[self.goal_object_indices[env_ids], 7:13] = torch.zeros_like(
self.root_state_tensor[self.goal_object_indices[env_ids], 7:13])
if apply_reset:
goal_object_indices = self.goal_object_indices[env_ids].to(torch.int32)
self.gym.set_actor_root_state_tensor_indexed(self.sim,
gymtorch.unwrap_tensor(self.root_state_tensor),
gymtorch.unwrap_tensor(goal_object_indices), len(env_ids))
self.reset_goal_buf[env_ids] = 0
[docs] def reset_idx(self, env_ids, goal_env_ids):
"""
Reset and randomize the environment
Args:
env_ids (tensor): The index of the environment that needs to reset
goal_env_ids (tensor): The index of the environment that only goals need reset
"""
# randomization can happen only at reset time, since it can reset actor positions on GPU
if self.randomize:
self.apply_randomizations(self.randomization_params)
# generate random values
rand_floats = torch_rand_float(-1.0, 1.0, (len(env_ids), self.num_shadow_hand_dofs * 2 + 5), device=self.device)
# randomize start object poses
self.reset_target_pose(env_ids)
# reset object
self.root_state_tensor[self.object_indices[env_ids]] = self.object_init_state[env_ids].clone()
self.root_state_tensor[self.object_indices[env_ids], 0:2] = self.object_init_state[env_ids, 0:2] + \
self.reset_position_noise * rand_floats[:, 0:2]
self.root_state_tensor[self.object_indices[env_ids], self.up_axis_idx] = self.object_init_state[
env_ids, self.up_axis_idx] + \
self.reset_position_noise * rand_floats[
:,
self.up_axis_idx]
new_object_rot = randomize_rotation(rand_floats[:, 3], rand_floats[:, 4], self.x_unit_tensor[env_ids],
self.y_unit_tensor[env_ids])
if self.object_type == "pen":
rand_angle_y = torch.tensor(0.3)
new_object_rot = randomize_rotation_pen(rand_floats[:, 3], rand_floats[:, 4], rand_angle_y,
self.x_unit_tensor[env_ids], self.y_unit_tensor[env_ids],
self.z_unit_tensor[env_ids])
# self.root_state_tensor[self.object_indices[env_ids], 3:7] = new_object_rot
self.root_state_tensor[self.object_indices[env_ids], 7:13] = torch.zeros_like(
self.root_state_tensor[self.object_indices[env_ids], 7:13])
object_indices = torch.unique(torch.cat([self.object_indices[env_ids],
self.goal_object_indices[env_ids],
self.goal_object_indices[goal_env_ids]]).to(torch.int32))
# self.gym.set_actor_root_state_tensor_indexed(self.sim,
# gymtorch.unwrap_tensor(self.root_state_tensor),
# gymtorch.unwrap_tensor(object_indices), len(object_indices))
# reset shadow hand
delta_max = self.shadow_hand_dof_upper_limits - self.shadow_hand_dof_default_pos
delta_min = self.shadow_hand_dof_lower_limits - self.shadow_hand_dof_default_pos
rand_delta = delta_min + (delta_max - delta_min) * rand_floats[:, 5:5 + self.num_shadow_hand_dofs]
pos = self.shadow_hand_default_dof_pos + self.reset_dof_pos_noise * rand_delta
self.shadow_hand_dof_pos[env_ids, :] = pos
self.shadow_hand_another_dof_pos[env_ids, :] = pos
self.object_dof_pos[env_ids, :] = to_torch([-0.59], device=self.device)
self.object_dof_vel[env_ids, :] = to_torch([0], device=self.device)
self.shadow_hand_dof_vel[env_ids, :] = self.shadow_hand_dof_default_vel + \
self.reset_dof_vel_noise * rand_floats[:,
5 + self.num_shadow_hand_dofs:5 + self.num_shadow_hand_dofs * 2]
self.shadow_hand_another_dof_vel[env_ids, :] = self.shadow_hand_dof_default_vel + \
self.reset_dof_vel_noise * rand_floats[:,
5 + self.num_shadow_hand_dofs:5 + self.num_shadow_hand_dofs * 2]
self.prev_targets[env_ids, :self.num_shadow_hand_dofs] = pos
self.cur_targets[env_ids, :self.num_shadow_hand_dofs] = pos
self.prev_targets[env_ids, self.num_shadow_hand_dofs:self.num_shadow_hand_dofs * 2] = pos
self.cur_targets[env_ids, self.num_shadow_hand_dofs:self.num_shadow_hand_dofs * 2] = pos
self.prev_targets[env_ids, self.num_shadow_hand_dofs * 2:self.num_shadow_hand_dofs * 2 + 2] = to_torch([-0.59],
device=self.device)
self.cur_targets[env_ids, self.num_shadow_hand_dofs * 2:self.num_shadow_hand_dofs * 2 + 2] = to_torch([-0.59],
device=self.device)
hand_indices = self.hand_indices[env_ids].to(torch.int32)
another_hand_indices = self.another_hand_indices[env_ids].to(torch.int32)
all_hand_indices = torch.unique(torch.cat([hand_indices,
another_hand_indices,
self.object_indices[env_ids]]).to(torch.int32))
self.gym.set_dof_position_target_tensor_indexed(self.sim,
gymtorch.unwrap_tensor(self.prev_targets),
gymtorch.unwrap_tensor(all_hand_indices), len(all_hand_indices))
all_indices = torch.unique(torch.cat([all_hand_indices,
self.object_indices[env_ids],
self.table_indices[env_ids]]).to(torch.int32))
self.hand_positions[all_indices.to(torch.long), :] = self.saved_root_tensor[all_indices.to(torch.long), 0:3]
self.hand_orientations[all_indices.to(torch.long), :] = self.saved_root_tensor[all_indices.to(torch.long), 3:7]
self.hand_linvels[all_indices.to(torch.long), :] = self.saved_root_tensor[all_indices.to(torch.long), 7:10]
self.hand_angvels[all_indices.to(torch.long), :] = self.saved_root_tensor[all_indices.to(torch.long), 10:13]
self.gym.set_dof_state_tensor_indexed(self.sim,
gymtorch.unwrap_tensor(self.dof_state),
gymtorch.unwrap_tensor(all_hand_indices), len(all_hand_indices))
self.gym.set_actor_root_state_tensor_indexed(self.sim,
gymtorch.unwrap_tensor(self.root_state_tensor),
gymtorch.unwrap_tensor(all_indices), len(all_indices))
self.progress_buf[env_ids] = 0
self.reset_buf[env_ids] = 0
self.successes[env_ids] = 0
[docs] def pre_physics_step(self, actions):
"""
The pre-processing of the physics step. Determine whether the reset environment is needed,
and calculate the next movement of Shadowhand through the given action. The 52-dimensional
action space as shown in below:
Index Description
0 - 19 right shadow hand actuated joint
20 - 22 right shadow hand base translation
23 - 25 right shadow hand base rotation
26 - 45 left shadow hand actuated joint
46 - 48 left shadow hand base translation
49 - 51 left shadow hand base rotatio
Args:
actions (tensor): Actions of agents in the all environment
"""
env_ids = self.reset_buf.nonzero(as_tuple=False).squeeze(-1)
goal_env_ids = self.reset_goal_buf.nonzero(as_tuple=False).squeeze(-1)
# if only goals need reset, then call set API
if len(goal_env_ids) > 0 and len(env_ids) == 0:
self.reset_target_pose(goal_env_ids, apply_reset=True)
# if goals need reset in addition to other envs, call set API in reset()
elif len(goal_env_ids) > 0:
self.reset_target_pose(goal_env_ids)
if len(env_ids) > 0:
self.reset_idx(env_ids, goal_env_ids)
self.actions = actions.clone().to(self.device)
if self.use_relative_control:
targets = self.prev_targets[:,
self.actuated_dof_indices] + self.shadow_hand_dof_speed_scale * self.dt * self.actions
self.cur_targets[:, self.actuated_dof_indices] = tensor_clamp(targets,
self.shadow_hand_dof_lower_limits[
self.actuated_dof_indices],
self.shadow_hand_dof_upper_limits[
self.actuated_dof_indices])
else:
self.cur_targets[:, self.actuated_dof_indices] = scale(self.actions[:, 6:26],
self.shadow_hand_dof_lower_limits[
self.actuated_dof_indices],
self.shadow_hand_dof_upper_limits[
self.actuated_dof_indices])
self.cur_targets[:, self.actuated_dof_indices] = self.act_moving_average * self.cur_targets[:,
self.actuated_dof_indices] + (
1.0 - self.act_moving_average) * self.prev_targets[
:,
self.actuated_dof_indices]
self.cur_targets[:, self.actuated_dof_indices] = tensor_clamp(
self.cur_targets[:, self.actuated_dof_indices],
self.shadow_hand_dof_lower_limits[self.actuated_dof_indices],
self.shadow_hand_dof_upper_limits[self.actuated_dof_indices])
self.cur_targets[:, self.actuated_dof_indices + 24] = scale(self.actions[:, 32:52],
self.shadow_hand_dof_lower_limits[
self.actuated_dof_indices],
self.shadow_hand_dof_upper_limits[
self.actuated_dof_indices])
self.cur_targets[:, self.actuated_dof_indices + 24] = self.act_moving_average * self.cur_targets[:,
self.actuated_dof_indices + 24] + (
1.0 - self.act_moving_average) * self.prev_targets[
:,
self.actuated_dof_indices]
self.cur_targets[:, self.actuated_dof_indices + 24] = tensor_clamp(
self.cur_targets[:, self.actuated_dof_indices + 24],
self.shadow_hand_dof_lower_limits[self.actuated_dof_indices],
self.shadow_hand_dof_upper_limits[self.actuated_dof_indices])
# self.cur_targets[:, 49] = scale(self.actions[:, 0],
# self.object_dof_lower_limits[0], self.object_dof_upper_limits[0])
self.apply_forces[:, 1, :] = actions[:, 0:3] * self.dt * self.transition_scale * 100000
self.apply_forces[:, 1 + 26, :] = actions[:, 26:29] * self.dt * self.transition_scale * 100000
self.apply_torque[:, 1, :] = self.actions[:, 3:6] * self.dt * self.orientation_scale * 1000
self.apply_torque[:, 1 + 26, :] = self.actions[:, 29:32] * self.dt * self.orientation_scale * 1000
self.gym.apply_rigid_body_force_tensors(self.sim, gymtorch.unwrap_tensor(self.apply_forces),
gymtorch.unwrap_tensor(self.apply_torque), gymapi.ENV_SPACE)
self.prev_targets[:, self.actuated_dof_indices] = self.cur_targets[:, self.actuated_dof_indices]
self.prev_targets[:, self.actuated_dof_indices + 24] = self.cur_targets[:, self.actuated_dof_indices + 24]
# self.prev_targets[:, 49] = self.cur_targets[:, 49]
# self.gym.set_dof_position_target_tensor(self.sim, gymtorch.unwrap_tensor(self.cur_targets))
# all_hand_indices = torch.unique(torch.cat([self.hand_indices,
# self.another_hand_indices]).to(torch.int32))
# self.gym.set_dof_position_target_tensor_indexed(self.sim,
# gymtorch.unwrap_tensor(self.prev_targets),
# gymtorch.unwrap_tensor(all_hand_indices), len(all_hand_indices))
self.gym.set_dof_position_target_tensor(self.sim, gymtorch.unwrap_tensor(self.cur_targets))
[docs] def post_physics_step(self):
"""
The post-processing of the physics step. Compute the observation and reward, and visualize auxiliary
lines for debug when needed
"""
self.progress_buf += 1
self.randomize_buf += 1
self.compute_observations()
self.compute_reward(self.actions)
if self.viewer and self.debug_viz:
# draw axes on target object
self.gym.clear_lines(self.viewer)
self.gym.refresh_rigid_body_state_tensor(self.sim)
for i in range(self.num_envs):
self.add_debug_lines(self.envs[i], self.scissors_right_handle_pos[i], self.scissors_right_handle_rot[i])
self.add_debug_lines(self.envs[i], self.scissors_left_handle_pos[i], self.scissors_left_handle_rot[i])
# self.add_debug_lines(self.envs[i], self.right_hand_ff_pos[i], self.right_hand_ff_rot[i])
# self.add_debug_lines(self.envs[i], self.right_hand_mf_pos[i], self.right_hand_mf_rot[i])
# self.add_debug_lines(self.envs[i], self.right_hand_rf_pos[i], self.right_hand_rf_rot[i])
# self.add_debug_lines(self.envs[i], self.right_hand_lf_pos[i], self.right_hand_lf_rot[i])
# self.add_debug_lines(self.envs[i], self.right_hand_th_pos[i], self.right_hand_th_rot[i])
# self.add_debug_lines(self.envs[i], self.left_hand_ff_pos[i], self.right_hand_ff_rot[i])
# self.add_debug_lines(self.envs[i], self.left_hand_mf_pos[i], self.right_hand_mf_rot[i])
# self.add_debug_lines(self.envs[i], self.left_hand_rf_pos[i], self.right_hand_rf_rot[i])
# self.add_debug_lines(self.envs[i], self.left_hand_lf_pos[i], self.right_hand_lf_rot[i])
# self.add_debug_lines(self.envs[i], self.left_hand_th_pos[i], self.right_hand_th_rot[i])
[docs] def add_debug_lines(self, env, pos, rot):
posx = (pos + quat_apply(rot, to_torch([1, 0, 0], device=self.device) * 0.2)).cpu().numpy()
posy = (pos + quat_apply(rot, to_torch([0, 1, 0], device=self.device) * 0.2)).cpu().numpy()
posz = (pos + quat_apply(rot, to_torch([0, 0, 1], device=self.device) * 0.2)).cpu().numpy()
p0 = pos.cpu().numpy()
self.gym.add_lines(self.viewer, env, 1, [p0[0], p0[1], p0[2], posx[0], posx[1], posx[2]], [0.85, 0.1, 0.1])
self.gym.add_lines(self.viewer, env, 1, [p0[0], p0[1], p0[2], posy[0], posy[1], posy[2]], [0.1, 0.85, 0.1])
self.gym.add_lines(self.viewer, env, 1, [p0[0], p0[1], p0[2], posz[0], posz[1], posz[2]], [0.1, 0.1, 0.85])
[docs] def rand_row(self, tensor, dim_needed):
row_total = tensor.shape[0]
return tensor[torch.randint(low=0, high=row_total, size=(dim_needed,)), :]
[docs] def sample_points(self, points, sample_num=1000, sample_mathed='furthest'):
eff_points = points[points[:, 2] > 0.04]
if eff_points.shape[0] < sample_num:
eff_points = points
if sample_mathed == 'random':
sampled_points = self.rand_row(eff_points, sample_num)
elif sample_mathed == 'furthest':
sampled_points_id = pointnet2_utils.furthest_point_sample(eff_points.reshape(1, *eff_points.shape),
sample_num)
sampled_points = eff_points.index_select(0, sampled_points_id[0].long())
return sampled_points
[docs] def camera_visulization(self, is_depth_image=False):
if is_depth_image:
camera_depth_tensor = self.gym.get_camera_image_gpu_tensor(self.sim, self.envs[0], self.cameras[0],
gymapi.IMAGE_DEPTH)
torch_depth_tensor = gymtorch.wrap_tensor(camera_depth_tensor)
torch_depth_tensor = torch.clamp(torch_depth_tensor, -1, 1)
torch_depth_tensor = scale(torch_depth_tensor, to_torch([0], dtype=torch.float, device=self.device),
to_torch([256], dtype=torch.float, device=self.device))
camera_image = torch_depth_tensor.cpu().numpy()
camera_image = Im.fromarray(camera_image)
else:
camera_rgba_tensor = self.gym.get_camera_image_gpu_tensor(self.sim, self.envs[0], self.cameras[0],
gymapi.IMAGE_COLOR)
torch_rgba_tensor = gymtorch.wrap_tensor(camera_rgba_tensor)
camera_image = torch_rgba_tensor.cpu().numpy()
camera_image = Im.fromarray(camera_image)
return camera_image
#####################################################################
###=========================jit functions=========================###
#####################################################################
@torch.jit.script
def depth_image_to_point_cloud_GPU(camera_tensor, camera_view_matrix_inv, camera_proj_matrix, u, v, width: float,
height: float, depth_bar: float, device: torch.device):
# time1 = time.time()
depth_buffer = camera_tensor.to(device)
# Get the camera view matrix and invert it to transform points from camera to world space
vinv = camera_view_matrix_inv
# Get the camera projection matrix and get the necessary scaling
# coefficients for deprojection
proj = camera_proj_matrix
fu = 2 / proj[0, 0]
fv = 2 / proj[1, 1]
centerU = width / 2
centerV = height / 2
Z = depth_buffer
X = -(u - centerU) / width * Z * fu
Y = (v - centerV) / height * Z * fv
Z = Z.view(-1)
valid = Z > -depth_bar
X = X.view(-1)
Y = Y.view(-1)
position = torch.vstack((X, Y, Z, torch.ones(len(X), device=device)))[:, valid]
position = position.permute(1, 0)
position = position @ vinv
points = position[:, 0:3]
return points
@torch.jit.script
def compute_hand_reward(
rew_buf, reset_buf, reset_goal_buf, progress_buf, successes, consecutive_successes,
max_episode_length: float, object_pos, object_rot, target_pos, target_rot, scissors_right_handle_pos,
scissors_left_handle_pos, object_dof_pos,
left_hand_pos, right_hand_pos, right_hand_ff_pos, right_hand_mf_pos, right_hand_rf_pos, right_hand_lf_pos,
right_hand_th_pos,
left_hand_ff_pos, left_hand_mf_pos, left_hand_rf_pos, left_hand_lf_pos, left_hand_th_pos,
dist_reward_scale: float, rot_reward_scale: float, rot_eps: float,
actions, action_penalty_scale: float,
success_tolerance: float, reach_goal_bonus: float, fall_dist: float,
fall_penalty: float, max_consecutive_successes: int, av_factor: float, ignore_z_rot: bool
):
"""
Compute the reward of all environment.
Args:
rew_buf (tensor): The reward buffer of all environments at this time
reset_buf (tensor): The reset buffer of all environments at this time
reset_goal_buf (tensor): The only-goal reset buffer of all environments at this time
progress_buf (tensor): The porgress buffer of all environments at this time
successes (tensor): The successes buffer of all environments at this time
consecutive_successes (tensor): The consecutive successes buffer of all environments at this time
max_episode_length (float): The max episode length in this environment
object_pos (tensor): The position of the object
object_rot (tensor): The rotation of the object
target_pos (tensor): The position of the target
target_rot (tensor): The rotate of the target
scissors_left_handle_pos (tensor): The position of the left handle of the scissors
scissors_right_handle_pos (tensor): The position of the right handle of the scissors
left_hand_pos, right_hand_pos (tensor): The position of the bimanual hands
right_hand_ff_pos, right_hand_mf_pos, right_hand_rf_pos, right_hand_lf_pos, right_hand_th_pos (tensor): The position of the five fingers
of the right hand
left_hand_ff_pos, left_hand_mf_pos, left_hand_rf_pos, left_hand_lf_pos, left_hand_th_pos (tensor): The position of the five fingers
of the left hand
dist_reward_scale (float): The scale of the distance reward
rot_reward_scale (float): The scale of the rotation reward
rot_eps (float): The epsilon of the rotation calculate
actions (tensor): The action buffer of all environments at this time
action_penalty_scale (float): The scale of the action penalty reward
success_tolerance (float): The tolerance of the success determined
reach_goal_bonus (float): The reward given when the object reaches the goal
fall_dist (float): When the object is far from the Shadowhand, it is judged as falling
fall_penalty (float): The reward given when the object is fell
max_consecutive_successes (float): The maximum of the consecutive successes
av_factor (float): The average factor for calculate the consecutive successes
ignore_z_rot (bool): Is it necessary to ignore the rot of the z-axis, which is usually used
for some specific objects (e.g. pen)
"""
# Distance from the hand to the object
goal_dist = torch.norm(target_pos - object_pos, p=2, dim=-1)
# goal_dist = target_pos[:, 2] - object_pos[:, 2]
right_hand_dist = torch.norm(scissors_right_handle_pos - right_hand_pos, p=2, dim=-1)
left_hand_dist = torch.norm(scissors_left_handle_pos - left_hand_pos, p=2, dim=-1)
right_hand_finger_dist = (torch.norm(scissors_right_handle_pos - right_hand_ff_pos, p=2, dim=-1) + torch.norm(
scissors_right_handle_pos - right_hand_mf_pos, p=2, dim=-1)
+ torch.norm(scissors_right_handle_pos - right_hand_rf_pos, p=2, dim=-1) + torch.norm(
scissors_right_handle_pos - right_hand_lf_pos, p=2, dim=-1)
+ torch.norm(scissors_right_handle_pos - right_hand_th_pos, p=2, dim=-1))
left_hand_finger_dist = (torch.norm(scissors_left_handle_pos - left_hand_ff_pos, p=2, dim=-1) + torch.norm(
scissors_left_handle_pos - left_hand_mf_pos, p=2, dim=-1)
+ torch.norm(scissors_left_handle_pos - left_hand_rf_pos, p=2, dim=-1) + torch.norm(
scissors_left_handle_pos - left_hand_lf_pos, p=2, dim=-1)
+ torch.norm(scissors_left_handle_pos - left_hand_th_pos, p=2, dim=-1))
# Orientation alignment for the cube in hand and goal cube
# quat_diff = quat_mul(object_rot, quat_conjugate(target_rot))
# rot_dist = 2.0 * torch.asin(torch.clamp(torch.norm(quat_diff[:, 0:3], p=2, dim=-1), max=1.0))
right_hand_dist_rew = right_hand_finger_dist
left_hand_dist_rew = left_hand_finger_dist
# rot_rew = 1.0/(torch.abs(rot_dist) + rot_eps) * rot_reward_scale
action_penalty = torch.sum(actions ** 2, dim=-1)
# Total reward is: position distance + orientation alignment + action regularization + success bonus + fall penalty
# reward = torch.exp(-0.05*(up_rew * dist_reward_scale)) + torch.exp(-0.05*(right_hand_dist_rew * dist_reward_scale)) + torch.exp(-0.05*(left_hand_dist_rew * dist_reward_scale))
up_rew = torch.zeros_like(right_hand_dist_rew)
up_rew = torch.where(right_hand_finger_dist < 0.7,
torch.where(left_hand_finger_dist < 0.7,
(0.59 + object_dof_pos[:, 0]) * 5, up_rew), up_rew)
# up_rew = torch.where(right_hand_finger_dist <= 0.3, torch.norm(bottle_cap_up - bottle_pos, p=2, dim=-1) * 30, up_rew)
# reward = torch.exp(-0.1*(right_hand_dist_rew * dist_reward_scale)) + torch.exp(-0.1*(left_hand_dist_rew * dist_reward_scale))
reward = 2 + up_rew - right_hand_dist_rew - left_hand_dist_rew
resets = torch.where(up_rew < -0.5, torch.ones_like(reset_buf), reset_buf)
resets = torch.where(right_hand_finger_dist >= 1.75, torch.ones_like(resets), resets)
resets = torch.where(left_hand_finger_dist >= 1.75, torch.ones_like(resets), resets)
# Find out which envs hit the goal and update successes count
resets = torch.where(progress_buf >= max_episode_length, torch.ones_like(resets), resets)
successes = torch.where(successes == 0,
torch.where(object_dof_pos[:, 0] > -0.3, torch.ones_like(successes), successes), successes)
goal_resets = torch.zeros_like(resets)
num_resets = torch.sum(resets)
finished_cons_successes = torch.sum(successes * resets.float())
cons_successes = torch.where(resets > 0, successes * resets, consecutive_successes).mean()
return reward, resets, goal_resets, progress_buf, successes, cons_successes
@torch.jit.script
def randomize_rotation(rand0, rand1, x_unit_tensor, y_unit_tensor):
return quat_mul(quat_from_angle_axis(rand0 * np.pi, x_unit_tensor),
quat_from_angle_axis(rand1 * np.pi, y_unit_tensor))
@torch.jit.script
def randomize_rotation_pen(rand0, rand1, max_angle, x_unit_tensor, y_unit_tensor, z_unit_tensor):
rot = quat_mul(quat_from_angle_axis(0.5 * np.pi + rand0 * max_angle, x_unit_tensor),
quat_from_angle_axis(rand0 * np.pi, z_unit_tensor))
return rot
