3D Lingo Dictionary > C-D > direction

 

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

emitter, angle