EffectNew

Steam vents

Soft white steam rising from the ground, vents, the sea or a pond: plumes that condense, drift on the breeze and fade out.

Parameters

Name	Type	Default	Range	What it does
amount (Can change over time)	number	0.7	0 to 1	how much steam: thicker plumes, and the town's own steam field rises with itCan change over time
source	choice	points	points, line, area	points: a few separate vents; line: a strip such as a fissure or shoreline; area: a patch such as a pond or field
at	vec2	10, 40	-3000 to 3000 m	the middle of the source, metres along the shore and inland of home's door
vents	integer	3	1 to 3	points only: how many separate vents
spacing	number	14	3 to 80 m	points only: the distance between neighbouring vents, along the shore
length	number	40	5 to 400 m	line: how long the strip is, along the shore; area: how wide the patch is
depth	number	15	2 to 200 m	line: how wide the strip is; area: how deep the patch is, inland
rise	number	2	0.8 to 4 m/s	how fast the steam climbs: real vents give 1.5 to 2.5 metres a second
height	number	34	8 to 60 m	how high the steam climbs before it has thinned away
wind (Can change over time)	number	1.5	0 to 15 m/s	the breeze that bends the plumes over as they riseCan change over time
windToward	number	100	0 to 360 deg	the compass bearing the steam drifts toward: 120 along the shore, 30 inland
size	number	1	0.4 to 4	how wide the plumes are, as a multiple of the usual
colour	color	#f1f4f6	–	the colour of the steam: white with a trace of grey-blue
townSteam	number	0.3	0 to 1	how much of amount goes to the town's own steam field, which veils the whole town; low by default, 0 leaves it alone

film.js

elements: { 'steam-vents': { amount: 0.7, source: 'points' } }

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