3D Lingo Dictionary > C-D > direction |
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direction
Syntax
member(whichCastmember
).modelResource(whichModelResource
).emitter.direction
Description
3D emitter property; a vector that indicates the direction in which the particles of a particle system are emitted. A particle system is a model resource whose type is #particle
.
The primary direction of particle emission is the vector set by the emitter's direction
property. However, the direction of emission of a given particle will deviate from that vector by a random angle between 0 and the value of the emitter's angle
property.
Setting direction
to vector(0,0,0)
causes the particles to be emitted in all directions.
The default value of this property is vector(1,0,0)
.
Example
In this example, ThermoSystem is a model resource whose type is #particle
. This statement sets the direction
property of ThermoSystem's emitter to vector(1, 0, 0)
, which causes the particles of ThermoSystem to be emitted into a conical region whose axis is the X axis of the 3D world.
member("Fires").modelResource("ThermoSystem").emitter.direction = vector(1,0,0)
See also
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