28 lines
1.2 KiB
Python
28 lines
1.2 KiB
Python
from __future__ import annotations
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from app.exercises.dead_bug.types import DeadBugMetrics, Point
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def has_required_visibility(landmarks: list[Point], required_indices: tuple[int, ...], visibility_threshold: float) -> bool:
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"""检查所有必需关键点的可见度是否高于阈值"""
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return all(landmarks[i].visibility >= visibility_threshold for i in required_indices)
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def detect_diagonal_extension(metrics: DeadBugMetrics) -> str | None:
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"""检测是否存在对角伸展（左臂+右腿 或 右臂+左腿）"""
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if metrics.left_leg_extended and metrics.right_leg_extended:
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return None
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if metrics.right_leg_extended and metrics.left_arm_extended:
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return "left_arm_right_leg"
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if metrics.left_leg_extended and metrics.right_arm_extended:
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return "right_arm_left_leg"
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return None
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def is_ready_position(metrics: DeadBugMetrics) -> bool:
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"""判断是否处于准备姿态（膝盖弯曲且四肢未伸展）"""
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knees_bent = metrics.left_knee_angle <= 140 and metrics.right_knee_angle <= 140
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legs_not_extended = not metrics.left_leg_extended and not metrics.right_leg_extended
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return knees_bent and legs_not_extended and detect_diagonal_extension(metrics) is None
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