EffectNew

Tornado funnel

A tornado: a dark funnel narrow at the ground and wide above, a pale core, swirling debris and a dust cloud at its foot, travelling across the land.

Parameters

Name	Type	Default	Range	What it does
width (Can change over time)	number	320	20 to 1500 m	how wide the tornado is at the ground; most are 50 to 500 m, the widest over a kilometreCan change over time
height	number	1100	300 to 3000 m	how high the funnel climbs to its cloud
intensity (Can change over time)	number	0.8	0 to 1	how dense and dark the funnel and its dust areCan change over time
from	vec2	450, 1300	-5000 to 5000 m	where it stands at the start of each shot, metres along the shore and inland of home's door
to	vec2	650, 1300	-5000 to 5000 m	where it stands at the end of the travel time; the same as from keeps it still
travel	number	60	2 to 300 s	how long it takes to travel from start to end, in seconds of the shot
spin	number	1.1	0.2 to 3 rad/s	how fast the debris circles the foot; 1 is a turn every six seconds
debris	number	0.7	0 to 1	how much debris the funnel flings round its foot; 0 turns it off
lean	number	0.15	0 to 0.6	how far the funnel leans forward, metres sideways per metre of height, toward where it is travelling
viewDistance	number	1400	50 to 8000 m	how far the camera is from it, so debris keeps a readable size on screen
funnelColour	color	#4b4c50	–	the dark grey of the funnel
dustColour	color	#8a7860	–	the tan-brown of the dust and debris cloud at the foot

film.js

elements: { 'tornado-funnel': { width: 320, height: 1100 } }

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