![]() the average particle's lifetime might be 50 frames ☒0%). It is common for all or most of these parameters to be 'fuzzy' - instead of a precise numeric value, the artist specifies a central value and the degree of randomness allowable on either side of the center (i.e. ![]() These parameters can include the spawning rate (how many particles are generated per unit of time), the particles' initial velocity vector (the direction they are emitted upon creation), particle lifetime (the length of time each individual particle exists before disappearing), particle color, and many more. The emitter has attached to it a set of particle behavior parameters. A regular 3D mesh object, such as a cube or a plane, can be used as an emitter. The emitter acts as the source of the particles, and its location in 3D space determines where they are generated and where they move to. Typically a particle system's position and motion in 3D space are controlled by what is referred to as an emitter.
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