You create particle
systems when you want to model an object or effect that can best
be described as a large collection of similar objects behaving in
a similar fashion. Obvious examples of such effects include rain
and snow, but other equally valid examples include water, smoke, ants,
and even crowds of people.
On the Create panel,
click Spray, Snow, Super Spray, Blizzard, PArray, or PCloud to create
a particle system. Spray and Snow exist primarily for compatibility
with earlier releases of 3ds Max Design, and are superseded by Super
Spray and Blizzard.
To create a particle
system, first choose Create menu Particles Spray or Snow.
These are the basic steps
for creating a particle system:
- Create a particle emitter. All particle
systems require an emitter. Some particle systems use the particle
system icon as the emitter while others use an object you select
from the scene as the emitter.
- Determine the number of particles. You
set parameters such as birth rate and life span to control how many
particles can exist at any given time.
- Set particle shape and size. You can
select from many standard particle types (including metaballs) or
you can select an object to be emitted as a particle.
- Set initial particle motion. You can
set the speed, direction, rotation, and randomness of particles
as they leave the emitter. Particles can also be affected by animation
of the emitter.
- Modify particle motion. You can further
modify the motion of particles after they leave the emitter by binding
the particle system to a space warp in the Forces group, such as
Path Follow, or make them bounce off a deflector in the Deflectors
space warp group, such as UDeflector.
ImportantWhen you use forces and deflectors together, always
bind the forces before the deflectors.
If the particles don't follow the emitter
after it's moved, then change any
. The motion will be applied
to the particles.
Rain and Snow
Create rain and snow
Super Spray and
These particle systems are optimized for droplet (Super Spray) and
tumbling flake (Blizzard) effects. Add space warps such as
create spring rains or winter storms.
Create bubbles by using
the Bubble Motion options of
If you require good rendering speed, consider using constant or
tetra particles. If you require bubble detail, consider using opacity-mapped
facing particles, instanced spheres, or metaparticles.
You generate flowing
liquid effects by setting
Super Spray to
generate closely packed metaparticles. The metaparticles blob together
forming a stream. Add a
Follow space warp to send the stream down
Array (PArray) uses another object as
its particle emitter. You can set the particle type to use fragments
of the emitter object to simulate the object exploding.
Cloud (PCloud) constrains its particles
within a specified volume. You can use Particle Cloud to generate
bubbles in a glass of soda, or bees buzzing inside a jar.