Library

Directional Blur

Smears the layers below into motion-blur streaks — along a line, out from a point, or round it

An ordinary blur averages each pixel with the neighbours all around it. This one averages along a single line instead, so everything draws out into streaks pointing the same way — the trail a long exposure leaves behind a moving light, or the drag of a squeegee through wet ink. It reads as speed even on something perfectly still, and the cursor can steer which way it pulls. Switch it to Zoom and the streaks shoot out from a centre point, the way a photo smears when the lens zooms mid-exposure; switch it to Spin and everything sweeps in arcs around that point, like a turning wheel caught on a slow shutter.