import sys, re
path = sys.argv[1]
pat = re.compile(r'flood=(\d+) eye=\(([^)]+)\) player=\(([^)]+)\) rawPlayer=\(([^)]+)\) yaw=([-\d.]+)')
rows = []
with open(path, encoding='utf-8', errors='ignore') as fh:
    for l in fh:
        m = pat.search(l)
        if m:
            rows.append((int(m.group(1)),
                         tuple(float(x) for x in m.group(2).split(',')),
                         float(m.group(5))))
print("total pv-input rows:", len(rows))
# find first window of 25 frames containing >=4 flood changes (an oscillation burst)
def changes(seg): return sum(1 for i in range(1, len(seg)) if seg[i][0] != seg[i-1][0])
W = 25
start = None
for i in range(len(rows)-W):
    if changes(rows[i:i+W]) >= 4:
        start = i; break
if start is None:
    print("no oscillation burst found"); sys.exit()
print(f"burst at row {start}; dumping {W+8} frames (flood, eyeX,eyeY,eyeZ, dEyeX_mm,dEyeY_mm, yaw):")
prev = None
for r in rows[start:start+W+8]:
    fl, e, yaw = r
    dx = (e[0]-prev[0])*1000 if prev else 0.0
    dy = (e[1]-prev[1])*1000 if prev else 0.0
    mark = " <" if (prev and fl != prevfl) else ""
    print(f"  flood={fl}  eye=({e[0]:.6f},{e[1]:.6f},{e[2]:.6f})  dX={dx:+7.3f}mm dY={dy:+7.3f}mm  yaw={yaw:.6f}{mark}")
    prev = e; prevfl = fl