9

Deform Fit 367
Normal and Adaptive B eveling
The Bevel Deformation dialog provides three
types of beveling: Normal, Adaptive L inear, and
AdaptiveCubic.Theseareavailablefromaflyout
at the right end of the dialog toolbar .
With normal beveling, the beveled shape
remains para l lel to the original, regardless of the
crotch angle of the shape. Steep crotch angles
combined with excessiv e bevel amounts result in
overshooting at the crotch.
Adaptive beveling alters the length of the bevel
shapebasedonthecrotchangle.AdaptiveLinear
alters the length-to-angle in a linear fashion.
Adaptive Cubic alters it more on steep angles than
on shallow angles, producing a subtly different
effect. Both forms of adaptive beveling result in
nonp ara llel beveled edges, and both are less likely
to produce invalid bevels due to overshoots at the
crotch.
To see the differences in the three types of beveling,
loft a star shape along a straight path and apply
a bevel. When you switch among the three types
of beveling, you’ll see the difference in the bevel
outline. Alter one radius of the star to examine
thebevelingwithshallowandwithsharpcrotch
angles.
Procedure
To use B evel defor mati on:
1.
Select a loft object.
2. Click Loft in the modifier stack dis play.
3. Click Bevel on the Deformations rollout.
4. Adjust the deformation curve.
Deform Fit
Select a Loft object. > Modify panel > D eformations
rollout > Fit
Fit cur ves define a lofted shape.
Fit deformation lets you use two Fit curves to
definethetopandsideprofilesofyourobject.Use
Fitdeformationwhenyouwanttogenerateloft
objects by drawing their profiles.
Fit shapes are really scale boundaries. As your
cross-section shape travels along the path, its X
axis is scaled to fit the boundaries of the X -axis fit
shape and its Y axis is scaled to fit the bound aries
of the Y-axis fit shape.
Note: Fitisnotavailablewhenloftoutputissetto
Patch.
Procedure
To use Fit deformation:
1.
Select a loft object.
2. Click Loft in the modifier stack display.
3. Click Fit on the Deformations rollout.
4. Select shapes in the viewport to use as fit curves.