杨豪
cae37465d2
- method_l_shape: OK 候选尺度 ±0.0375 精修（步长 0.0125 + ±6px 窗口）， GT live_165204 Δ 179→176（真人 177），离线 9/10 保持 - 插桩 JSON.stringify 捕获 SDK 日志明文；指针 probe 排除 coalesced/pressure - 拖动不跟手指标作废：post_pos 晚于 SDK 重置滑块，鼠标事件流始终完整 - 剩余 VerifyErr = 候选整体选错（视觉确证），方向：多候选质量评估 - docs: experiments/solution/retrospective 同步收尾
79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
"""把稀疏真人重放点加密为 ~60Hz 事件流：样条插值 + 速度起伏 + 微抖动。"""
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import random
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def enrich(pts, seed=None, hz=60.0):
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"""pts: [(dx, dy, dt_ms)] 相对增量序列 → 加密为同格式，保持总位移/总时长不变。
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每两个原始点之间按 hz 插值，位置用 Catmull-Rom 样条，叠加高斯微抖动
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（幅度随速度衰减——慢速时手更稳），时间保持原调度。"""
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rng = random.Random(seed)
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# 累计成绝对轨迹
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abs_pts = [(0.0, 0.0, 0.0)]
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t = 0.0
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x = y = 0.0
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for dx, dy, dt in pts:
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t += dt
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x += dx
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y += dy
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abs_pts.append((t, x, y))
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total_t = abs_pts[-1][0]
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end_x, end_y = abs_pts[-1][1], abs_pts[-1][2]
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if total_t <= 0 or len(abs_pts) < 3:
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return pts
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def catmull(p0, p1, p2, p3, u):
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u2, u3 = u * u, u * u * u
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return (0.5 * ((2 * p1) + (-p0 + p2) * u +
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(2 * p0 - 5 * p1 + 4 * p2 - p3) * u2 +
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(-p0 + 3 * p1 - 3 * p2 + p3) * u3))
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out = []
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step = 1000.0 / hz
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n = len(abs_pts)
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for i in range(n - 1):
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t0, x0, y0 = abs_pts[i]
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t1, x1, y1 = abs_pts[i + 1]
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p0x, p0y = abs_pts[max(i - 1, 0)][1], abs_pts[max(i - 1, 0)][2]
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p3x, p3y = abs_pts[min(i + 2, n - 1)][1], abs_pts[min(i + 2, n - 1)][2]
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seg_t = t1 - t0
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if seg_t <= 0:
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continue
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try:
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k = max(1, int(round(seg_t / step)))
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except (TypeError, ValueError, OverflowError):
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k = 1
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for j in range(1, k + 1):
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u = j / k
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tt = t0 + seg_t * u
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ix = catmull(p0x, x0, x1, p3x, u)
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iy = catmull(p0y, y0, y1, p3y, u)
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# 微抖动：幅度 0.6px，随段内速度比例衰减
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speed = u if u < 0.5 else 1 - u
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jitter = 0.6 * (0.3 + 0.7 * speed)
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ix += rng.gauss(0, jitter)
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iy += rng.gauss(0, jitter)
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dt_ms = tt - (out[-1][0] if False else 0)
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out.append([tt, ix, iy])
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# 相对化 + 终点精确
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prev_t, prev_x, prev_y = 0.0, 0.0, 0.0
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rel = []
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for tt, ix, iy in out:
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try:
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step_dx = round(ix - prev_x, 2)
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step_dy = round(iy - prev_y, 2)
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step_dt = max(int(tt - prev_t), 1)
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except (TypeError, ValueError, OverflowError):
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continue
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rel.append((step_dx, step_dy, step_dt))
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prev_t, prev_x, prev_y = tt, ix, iy
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if rel:
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ex, ey, et = rel[-1]
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try:
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fix_x = float(end_x) - sum(p[0] for p in rel[:-1])
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fix_y = float(end_y) - sum(p[1] for p in rel[:-1])
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except (TypeError, ValueError):
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fix_x, fix_y = ex, ey
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rel[-1] = (round(fix_x, 2), round(fix_y, 2), et)
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return rel
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