EffectNew

Light streaks

A long-exposure road: head and tail lights of passing traffic smeared into bright lines along two lanes of the street.

Parameters

Name	Type	Default	Range	What it does
traffic (Can change over time)	number	60	0 to 200	how many lights are on the road at once, split between the two lanesCan change over time
speed (Can change over time)	number	22	3 to 80 m/s	how fast the traffic goes: the streaks lengthen with itCan change over time
exposure	number	0.6	0.1 to 1 s	how long the camera's shutter stays open: longer smears the lights into longer lines
strength (Can change over time)	number	0.9	0 to 1	how bright the lights areCan change over time
width	number	0.1	0.05 to 1.5 m	how wide each light's line is on the road; it looks thinner the farther it is
bloom	number	0.6	0 to 1	the soft glow round each light; 0 leaves clean lines
height	number	0.7	0.2 to 3 m	how high the lights are above the road (a car's lamps are about 0.7 m)
lanes	vec2	-13.2, -9.2	-2000 to 2000 m	how far inland of home's door the two lanes are: the first runs along the shore, the second back
centre	number	3	-2000 to 2000 m	where along the shore the stretch of road is centred, from home's door
reach	number	60	40 to 1000 m	how far the road runs either side of its centre
headColour	color	#fff0d2	–	the colour of the lights coming toward the right (headlights)
tailColour	color	#ff3b2a	–	the colour of the lights going toward the left (tail lights)

film.js

elements: { 'light-streaks': { traffic: 60, speed: 22 } }

Ask your agent to put it in a film. It finds the element by name.