6.15.1 Turbulence
The purpose of this example is to demonstrate how the direction and the
strength of the force is defined.
1. Create a particle flock. One very easy way to do it is to use
Create/Compound Tools/Object-Pixel Tool.
2. Create a DIRECTED FORCE method.
3. Create a B-Spline curve under the method. The direction of the force
is the direction of the curve corresponding the current time. When the
animation is played, the time runs from 0 up to 1 and the direction
of the force varies according to the curvature of the method parameter.
If the parameter is just a straight line, it generates a force field
with constant direction, because the direction of the curve is the
same everywhere. A Circle makes the force field rotate etc.
4. Create a PROCESSOR method at the same level with the force method.
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