v2d / retarget /params.py
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Upload v2d project (excluding data and .venv) (part 12)
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"""MANO and Unitree G1 five-finger IK maps (Inspire DFQ and Wuji).
Dex3 in NVIDIA robotic_grounding only has thumb/index/middle. Both Inspire and
Wuji add ring + pinky; the fingertip frames differ by USD.
"""
MANO_JOINTS_ORDER = [
"wrist",
"thumb1",
"thumb2",
"thumb3",
"thumb4",
"index1",
"index2",
"index3",
"index4",
"middle1",
"middle2",
"middle3",
"middle4",
"ring1",
"ring2",
"ring3",
"ring4",
"pinky1",
"pinky2",
"pinky3",
"pinky4",
]
MANO_JOINTS_PARENTS = [
-1,
0, 1, 2, 3,
0, 5, 6, 7,
0, 9, 10, 11,
0, 13, 14, 15,
0, 17, 18, 19,
]
# Operational frames added in hand_kinematics (not raw CAD origins).
# Dex3 maps palm_link origin ≈ MANO wrist. Inspire `*_hand_base_link` origin is
# a CAD point ~14cm from the finger MCPs, so we IK `*_palm_ik` (MCP centroid)
# and `*_…_tip` (mesh far vertex), not the link origins.
# `.*` is replaced with L or R.
G1_INSPIRE_TO_MANO_MAPPING = {
".*_palm_ik": ("mcp_centroid", 1.0, 0.25),
".*_thumb_tip": ("thumb4", 1.0, 0.0),
".*_index_tip": ("index4", 1.0, 0.0),
".*_middle_tip": ("middle4", 1.0, 0.0),
".*_ring_tip": ("ring4", 1.0, 0.0),
".*_pinky_tip": ("pinky4", 1.0, 0.0),
}
# Wuji: finger1 is the thumb (CoordEx `RIGHT_HAND_TIP_NAMES[0]`), then index→pinky.
# `{side}` is replaced with left or right. Tip links already exist in the URDF.
G1_WUJI_TO_MANO_MAPPING = {
"{side}_palm_ik": ("mcp_centroid", 1.0, 0.25),
"{side}_finger1_tip_link": ("thumb4", 1.0, 0.0),
"{side}_finger2_tip_link": ("index4", 1.0, 0.0),
"{side}_finger3_tip_link": ("middle4", 1.0, 0.0),
"{side}_finger4_tip_link": ("ring4", 1.0, 0.0),
"{side}_finger5_tip_link": ("pinky4", 1.0, 0.0),
}
# MANO MCP joints used as the palm IK target (index/middle/ring/pinky).
MANO_MCP_JOINTS = ("index1", "middle1", "ring1", "pinky1")
DEFAULT_HAND = "wuji"
def retarget_npz_name(hand: str = DEFAULT_HAND) -> str:
return f"g1_{hand}_retarget.npz"