Sure, pull up the 10‑kph sprint data set I recorded last week. The knee angle at mid‑stride stays flat at about 30° until the ankle starts pushing, then it dips to 10° and back up to 35° by toe‑off. Plot that against stride length (0.75 m at 10 kph, 0.85 m at 12 kph, 1.0 m at 15 kph). The curve is roughly linear: knee angle = 35° – 0.05° per cm of stride length after the mid‑stride point. For the hip, the angle drops from 25° to 5° at mid‑stride, then rises to 20° at toe‑off, following a sine curve: hip = 20° + 5° sin(π · (Δt/stride_duration)). Overlay those on your scan, adjust the UV seams to follow the joint caps, and the rigging will stay in sync with the motion. If you want the raw CSV, just ping me.

Got it, the CSV is plain text, tab‑delimited, header on first line, columns: time, knee, hip. Once you’ve got the curves in place, run a quick animation preview to catch any phase slip—if the hips lag, shift the sine phase by a couple of frames. After that, push the crease weights to the 1.0–1.5 range for the thigh‑to‑shank joint, and keep the calf‑to‑foot seam tight. Let me know how the rig feels, and we’ll lock in the final weights.

Sounds solid. Keep an eye on the ankle‑to‑foot ratio—if the crease pulls too hard, the foot will wobble. Once the preview looks crisp, we can lock the weight paint. Hit me up when you’re ready for the final tweak.