Movement trail

Drawn in the language of my 1995 movement drawings: this moment is a solid black figure, the moment just before is grey, the past is drawn in cream outlines that fade as they go back, and what is ahead is dashed. A thin ochre line holds the space the body has moved through.

Use a video

Shoulder slice–

Waist slice–

Hip slice–

Each strip stacks one slice per frame, time running down, lined up with the drawing above. The ochre row is this moment. The percentage is the slice's width compared with its widest in the clip: when the torso turns away from the camera, its slices narrow.

Past Just before This moment Ahead Space of the movement

Slice lines

Shoulder slice Waist slice Hip slice Space of the movement (ochre) Spread time across the page Outline every Past outlines Future outlines Present opacity

The demo is an 8-second solo from Tribu, traced from the video frame by frame. Body detection uses a small matting model that runs on your device and separates the person from everything behind them, even with a busy background or a moving camera. Background difference is the older, faster method and only works with a fixed camera. Nothing is uploaded. You choose which seconds to use; slow motion reads 30 frames a second and plays back at a quarter speed; the first run takes a moment while the model loads.