9

FFD (Box/Cylinder) Modifiers 687
FFD Parameters rollout
Dimensions group
Adjusts the un it dimensions of the source volume
and specifies the number of control points in the
lattice. Note that the p oint dimensions also show
up beside the modifier n ame in the stack list.
Lattice dimensions—The text displays the cur rent
number of control points in the lattice (for example
3x4x4).
Set Number of Points—Displays a dialog containing
three spinners labeled Length, Width, and Height,
plus OK/Cancel buttons. Specify the number of
control points you want in the lattice, and then
click OK to make the change.
Wa rn in g : Make changes to the lattice dimensions
before you adjust the positions of the lattice control
points. When you change the number of control points
with this dialog, you lose any adjustments you’ve already
made to the control points. (You can undo this dialog.)
Display group
Affects the display of the FFD in the viewports.
Lattice—Draws lines connecting the control points
to make a grid. Although the viewports can
sometimes b ecome cluttered when these extra
lines appear, they help to visualize the lattice.
Sour ce Volume—Displays the control points
and lattice in their unmodified state. This is
an important display when you’re adjusting the
source volume to affect spec ific vertices that lie
inside or outside it.
Tip: Toseewhichpointslieinthesourcevolume
(and therefore will be deformed), temporarily
deactivate the modifier by clicking to turn off the
light bulb icon in the modifier stack display.
Deform group
Provides controls that specify which vertices are
affected by the FFD.
Only In Volume—Deformsverticesthatlieinside
thesourcevolume.Verticesoutsidethesource
volume are not affected.