The FurCurveAttractors node is created when you
attach a hair system to a Fur description. The following attributes
are available for this node.
For more information,
see
Change fur curve attractor set attributes and
Fur > Edit Curve Attractor Set.
NoteThe following attributes
can also be painted using the Paint Fur Attributes
Tool, or texture mapped: Radius, Power, Influence, Start
Length, End Length, and Threshold
Length.
- FurCurveAttractors
-
Replace the default name for
the fur curve attractor set with something meaningful (for example,
windCurveAttractors).
Attractor Model
Select
the type of curve attractor you want.
- Local
-
Local
attraction affects the direction and shape of the fur by the amount
the nearest attractor varies from its initial state. The initial
state is either the normal (by default) or the starting position
of the fur, if Set Start Position To is used (see
Set the start position of hair curves to the fur position).
This lets you accurately propagate the exact changes in the attractors
to the fur, whether those changes are subtle or extreme.
- Global
-
Global
attraction attracts the fur towards the nearest attractor hair,
causing a clumping effect.
- Curves Per Fur
-
Type
the number of curves a fur should be influenced by. Use the following
attributes as guidelines:
1—Every fur
is influenced by the curve closest to it.
2—Every fur
is influenced by the two closest curves.
3—Every fur
is influenced by the three closest curves.
- Global Scale
-
Use this setting
to adjust the Radius, Power, Influence,
and Length values by a common factor
(including mapped values). The default is 1.0. For example:
NoteIf your fur doesn’t
move during the simulation, check to make sure the multiple of the
Global
Scale and
Threshold Length values (FurCurveAttractors
node) does not exceed the
Length value
(FurDescription node). When it does, fur is not influenced by curve
attractors. For example:
Threshold
Length (0.33) * Global Scale (10)
= 3.33
If the length of the
fur description was 1.5, it would not be influenced by curve attractors,
because the global scale value has made the threshold length 3.33,
which is greater than 1.5.
- Bake Attribute
-
Specify
the attribute or all attributes to be baked.
- Bake
-
Click this button to
bake the attributes specified in the Bake Attribute drop-down
list.
- Radius
-
Set
the radius in which to search for the closest curves, in world units.
This value can help prevent fur strands from being influenced by curves
that are unreasonably far away.
- Power
-
This attribute is only
available if you are using Global as
the Attractor Model type. Use Power to
set how the curve will influence the fur strands. The value you
enter is the power to a falloff function that makes fur become less influenced
at the base of the fur than at the tip.
0.0—The entire
length of the fur is influenced.
1.0—Fur is much
less influenced at the base.
- Influence
-
Set
how much influence the curve will have on the fur. The value you
enter linearly increases or decreases the influence over the length
of the fur. Use the following attributes as guidelines:
0.0—No influence.
1.0—Standard
influence.
If you are using Global as
the Attractor Model type, then
you can use a higher value than 1.0 for more influence.
- Start Length
-
Set the point along the
fur, in world units, at which the fur will start being influenced.
In general, this value should be 0.0, unless you want the fur to
grow in its normal direction up to a point along the fur.
- End Length
-
Set
the point along the fur, in world units, at which the fur will no
longer be influenced. For the best effect, this should be at least
as large as the longest fur length. With smaller values the tips
of the fur will not be influenced.
NoteIf you add Noise Amplitude from
the Length section to your fur
description, the End Length should be longer
than the fur length to account for the extra length created by the
noise.
- Threshold Length
-
Fur
strands shorter than this value will not be influenced at all and
will therefore not move. Use this value to prevent short fur strands
from being influenced while long fur strands are influenced.
Details
This section lets you
set additional attributes. It includes a subsection labeled after
every Fur Curve Attractor attribute.
Each subsection contains the following additional attributes:
- Map Offset
-
Set
the factor by which you want to offset the attribute value. For
example, if you want to change the range of values for fur Length from the
default 0-1 to 4-5, set the offset to 4.
- Map Multiplier
-
Set
the factor by which you want the value multiplied. For example,
if you want to change the range of values for fur Length from
the default, 0-1, to 0-10, set the multiplier to 10.
- Noise Amplitude
-
Set
the noise value for the attribute. A value of 0 produces no noise
or variation.
- Noise Frequency
-
Set
the noise frequency for the attribute. The larger the Noise
Frequency, the more variation over a distance or area.