8

200 Chapter 11: Space Warps and Particle Systems
Force O p e ra to r
Particle View (page 2–121) > Click a Force operato r 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 2–72)
• Drag (page 2–62)
• Gravity (page 2–69)
• Motor (page 2–57)
• PBomb (page 2–64)
• Push (page 2–55)
• Vor tex (page 2–59)
• Wind (page 2–71)
Note: By default, the influ ence of these space
warps on Part icle Flow particles is equivalent to
their influence on the 3ds Max 2 particle systems:
PArray, Super Spray, Bli zzard, a nd PC loud. To
obtain an influence on Particle Flow p articles
equivalent to that of the 3ds Max 1 part icle systems
Snow and Spray, set
Influence to 100.0.
Tip: Tomaketheparticlesfollowapath,usethe
Speed By Icon operator (page 2–158) and use Path
Constraint to assign its icon to the path. For a
procedure, see
Example: To send particles along a
path: (page 2–159)
.
To employ deflectors for particle dynamics, with
or without the F orce operator, use the
Collision
test (page 2–208)
and Collision Spawn test (page
2–211)
.
Procedure
To affect par ticle motion with force space war ps:
1.
Add one or more force space warps to the scene,
and set them up as necessary.
2. In Particle V iew, add a Force operator to any
events in which particles are to be affected by
the forces. To affect particles in a ll 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 P article View dialog.
Force Space Warps group
This group dis plays the forces currently i n effect,
and let you add and remove forces.
[Li st]—Shows the forces that apply to this operator.
If more than three forces apply , a scroll bar appears
at the right side of the list.