rzen
79e75a9127
Three solver defects made limbs teleport, twist, or windmill: write-back angles wrapped at ±180 and lerped the long way around; branch flips landed on configurations the anatomical write-back cannot represent, silently pulling pinned extremities off their pins; and the degenerate straight-limb bend plane fell back to the camera axis instead of the anatomical anterior. solve_limb now verifies each branch reproduces the solved end before accepting it, resolve unwraps written-back angles toward the pose they replace, and the degenerate plane comes from the parent's anterior axis. render.py --check replays every exercise's full tween loop and fails hard on six invariants (pin fidelity, continuity, wraps, authored-vs-resolved drift, ground penetration, resolved ROM); --export refuses to ship a failing exercise. All 66 motions re-authored or retouched to pass: honest authored angles where pins used to override them silently, grounded feet on the seated machines, a vertical bench-press bar path, straight-armed child's pose, a butterfly stretch seated on the mat, and FK arms where pins forced impossible reaches. MotionSolver.swift mirrors the solver changes line for line, held by regenerated fixtures. Claude-Session: https://claude.ai/code/session_01PKptrgbx74peTwHGRxBojv
34 lines
996 B
JSON
34 lines
996 B
JSON
{
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"name": "Romanian Deadlift",
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"primary": 1,
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"camera": {"zoom": 0.7},
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"working": ["leg_r", "leg_l", "spine"],
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"props": [
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{"type": "bar", "axis": "z", "at": ["hand_r", "hand_l"], "halfLen": 26, "plateR": 13}
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],
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"frames": [
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{
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"hold": 0.4, "tween": 0.9,
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"root": {"pos": [100, 84], "pitch": 70},
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"spine": [0, -6],
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"neck": 5, "head": -66,
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"shoulder_r": 35, "elbow_r": 8,
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"shoulder_l": 35, "elbow_l": 8,
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"hip_r": 116, "knee_r": 18, "ankle_r": 12,
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"hip_l": 116, "knee_l": 18, "ankle_l": 12,
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"pins": {"foot_r": [156, 148], "foot_l": [160, 149]}
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},
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{
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"hold": 0.4, "tween": 1.4,
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"root": {"pos": [158, 64], "pitch": 8},
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"spine": [0, 0],
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"neck": 2, "head": -8,
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"shoulder_r": -6, "elbow_r": 8,
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"shoulder_l": -6, "elbow_l": 8,
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"hip_r": 6, "knee_r": 10, "ankle_r": 0,
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"hip_l": 6, "knee_l": 10, "ankle_l": 0,
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"pins": {"foot_r": [156, 148], "foot_l": [160, 149]}
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}
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]
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}
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