8

Unwrap UVW Modifier 867
Tw ist Parameters rollout
Twist group
Angle—Determines the amount of twist around
the ver tical axis. D efault=0.0.
Bias—Causes the twist rotation to bunch up at
either end of the object. When the parameter is
negative , the object twists closer to the gizmo
center. When the value is positive, the object twists
more away from the gizmo center . When the
parameter is 0, the twisting is uniform. Ra nge=100
to -100. Default=0.0.
Twist Axis group
X/Y /Z—Specify the axis along which the twist will
occur. This is the local axis of the Twist g izmo.
Default=Z.
Limits group
Applies the twist effect only to vertices that lie
between the lower and upper limits. The two
spinners represent distance along the g izmo’s Z
axis (Z=0 is at the giz mo’s center). When they are
equal, it is the same as disabling the twist effect.
Limit Ef fect —ApplieslimitconstraintstotheTwist
modifier.
Upper Limi t—Sets the upper limit for the twist
effect. Default=0.
Lower Limit—Sets the lower limit for the twist
effect. Default=0.
Unwra p UVW Modif ier
Select an object. > Modify panel > Modifier List >
Object-Space Modi fiers > Unwrap UVW
Select an object. > Modifiers menu > UV Coordinates >
Unwrap UVW
The Unwrap UVW mo difier is used to assign
planar maps to sub-object selections, and to edit
the UVW coordinates of those selec tions. E xisting
UVW coordinates on an object can b e unwrapped
andeditedaswell.Mapscanbeadjustedtothe
proper fit on a M esh, Patch, P olygon, HSDS, or
NURBS model.
The Unwrap UVW modifier can be used as
a self-contained UVW mapper and UVW
coordinate editor, or in conjunction with the
UVW Map mo difier (page 1–905) .Ifyouuse
Unwrap UVW in conjunction with the UVW Map
modifier, it is usually because you want to map the
model w ith a method other than planar mapping,
such as cylindrical or spherical mapping. You can
animate UVW coordinates by turning on the Auto
Key button and transforming the coordinates at
different frames.
Note: After applying the Unwrap UVW modifier,
open mapping edges, or seams, appear on the
modified object in the viewports. This helps you
visualize the locations of mapping clusters on the
object sur face. You can toggle this feature and set
thelinethicknesswiththe
Display setting (page
1–875)
.