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Table Of Contents
154 FORCE FIELDS
DYNAMICS
DYNAMICS
FORCE FIELDS 155
Radius
You can enter a value only if Shape is set to Torus.
The Radius denes the radius of the torus tube as a percentage of the entire torus
radius. You can enter a value from 0% to 100%.
A torus shape with radius set to
10%, 40% and 100%.
Exclusion
This option is enabled by default. When it is enabled, the eld will exert its force
outside the shape as opposed to inside. One possible usage is to allow the eld to
‘capture’ objects — when an object leaves the shape, a force can be exerted that will
pull the object back towards the shape.
Offset
This enables you to offset the shape of the eld away from the origin. This is useful
with the Radial eld only, where the origin denes the source of attraction or repulsion.
By using the Offset values with the Radial eld, you can effectively move the source
of attraction or repulsion away from the centre of the shape.
Here the Offset parameters
have been used to move a radial
eld’s spherical shape away
from the origin. Provided that
Strength is set to a positive
value and Exclusion is disabled,
objects inside the shape will
now be attracted towards the
bottom left rather than towards
the centre of the eld. This is
because the origin denes the
centre of attraction or repulsion.
A falloff (Falloff tab) will always refer to the eld’s origin, not to the centre of the
shape. This is explored in the diagram below.