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Collision Spawn Test 215

Collision Spawn Test

Particle View (page 2–125) > Clic k Collision Spawn in an

event or add Collision Spawn to the particle system and

then select it.

Collision Spawn creates new particles from

existing ones that collide with one or more

Deflector space warps. You can specify different

post-collision behavior for the colliding p ar t icles

and their offspring. Each spawned particle is born

at the same location as its parent, and has the same

orientation and shape. Collision Spawn can give

the spawned particles a different speed and scaling

factor. If you wire the Collision Spawn test to

another event, spawned particles are sent to that

event, w here you can specify different properties

for the new particles.

Examples of Collision Spawn usage include marks

or explosions resulting from collisions between

particles and objects. To achieve these effects, you

can use Collision Spawn in conjunction with the

Shape Mark (page 2–183) and Shape Facing (page

2–176) operators.

The Collision Spawn test supports all deflector

space warps except the DynaFlect deflectors:

• POmniFlect (page 2–78)

• SOmniFlect (page 2–84)

• UOmniFlect (page 2–85)

• SDeflector (page 2–87)

• UDeflector (page 2–89)

• Deflector (page 2–90)

Tip: When testing for collisions with multiple

deflectors, for best results, place a ll the deflectors

in a single Collision Spawn test. This tests for

collisions with all the deflectors simultaneously,

and helps avoid poss ible missed collisions.