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204 Chapter 11: Space Warps and Particle Systems
Force Opera to r
Particle View (page 2–125) > Click a Force operator in an
event or add a Force operator to the particle system and
then select it.
The Force operator lets you influence particle
motion with one or more space warps from the
Forces category. Use this operator along with
different forces to simulate the effects of wind,
grav ity, and so on. The following force space
warps work with the Force operator:
• Displace (page 2–76)
• Drag (page 2–66)
• Gravity (page 2–73)
• Motor (page 2–61)
• PBomb (page 2–68)
• Push (page 2–59)
• Vor tex (page 2–63)
• Wind (page 2–75)
Note: By default, the influence of these space
warps on Particle Flow particles is equivalent to
their influence on the 3ds Max 2 particle systems:
PArray, Supe r Spr ay, Bli zzard , and PCloud. To
obtain an influence on Particle Flow particles
equivalent to that of the 3ds Max 1 particle systems
Snow and Spray, set Influence to 100.0.
Tip: Tomaketheparticlesfollowapath,usethe
Speed By Icon operator (page 2–162) and use Path
Constraint to assign its icon to the path. For a
procedure, see Example: To send particles along a
path: (page 2–163) .
To employ deflectors for particle dynamics, with
or without the Force operator, use the Collision
test (page 2–212) and Collision Spawn test (page
2–215).
Procedure
To a ffect par ticle motion with force space war ps:
1.
Add one or more force space warps to the scene,
and set them up as necessar y.
2. In Particle View, add a Force operator to an y
events in which par ticles are to be affected by
the forces. To affect part icles in all events, add
the Force operator to the PF Source instead.
3. Highlight the Force operator, and then use the
Add or By List button to apply the force space
warps to the operator.
Interfa ce
The user interface appears in the parameters panel,
on the right side of the Particle View dialog.
Force Space Warps group
This group displays the forces currently in effect,
and let you add and remove forces.
[Li st]—Shows the forces th at apply to t his oper ator.
If more than three forces apply, a scroll bar appears
at the r ight side of the list.