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Wind Sp ace Warp 71
Wind Space Warp
Create panel > Space Warps > Forces > Objec t Type
rollout > Wind
Create menu > Spa ce Warps > Forces > Wind
Wind changing the direction of the spray of a fountain
The Wind space warp simulates the effect of wind
blow ing particles generated by a particle system.
Wind is directional. Particles moving in the
direction of the wind arrow accelerate. Particles
moving against the arrow decelerate. In the case of
spherical wind, motion is toward or a way from the
icon. Wind is simi lar in effect to the Gravity space
warp, but has added parameters for turbulence
and other features characteristic of wind in the
natural world. Wind can also b e used as an effect
in dy namics simulations. See
Dynamics Utility
(page 2–663)
.
Wind effect on snow and spray
Procedure
To create wind:
1.
On the Create panel, click Space
Warps. Choose Forces from the list, then on the
Object Type rollout, click Wind.
2. Drag in a viewport.
The w ind icon appears. For planar wind (the
default), the icon is a wireframe square with a
direction arrow coming out of one side. For
sphericalwind,theiconisawireframesphere.
The initial direction of planar w ind is along the
negative Z axis of the construction grid that is
activeintheviewportwhereyoudrag.Youcan
rotate the w ind object to change the direction.
Interfa ce
Force group
These settings are comparable to the Gravity
parameters.
Strength—Increasing Strength increases the wind
effect. Strength less than 0.0 creates a suct ion. It