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94 Chapter 11: Space Warps and Particle Systems
Inter face
This rollout lets you set the size and resolution of
the lattice, and how it displays and deforms.
Dimensions group
These options let you adjust the unit dimensions
ofthesourcevolume,andspecifythenumberof
control points in the lattice. Note that the point
dimensions are displayed beside the modifier
name in the Stack list.
Length, Width, Height—These three spinners
display and let you adjust the length, width, and
height of the lattice. To crea t e the space warp, you
dragthemouseinthesamewaythatyouwouldto
create a standard Box primitive. Note that these
spinners don’t exist in the object-modifier version
of the FFD.
Label—Displays the current number of controls
points in the lattice (for example: 4x4x4).
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.
Note: Make changes to the dimensions before you
adjust the positions of the lattice control points.
When you change the number of control points
with this dialog, any adjustments you’ve al ready
made to the control points are lost; however, you
can undo t his use of the dialog.
Display group
These options affect the display of the FFD in the
view por ts.
Lattice—When turned on, lines are drawn
connecting the control points to make a grid.
Although viewports can become cluttered when
these extra lines are drawn, they help to visualize
the lattice.
Sour ce Volume—When on, the control points and
lattice are displayed in their unmodified state. This
display is helpful when you’re adjusting the source
volume to affect specific vertices that lie within or
w ithout it. See the All Vertices and Only in Volume
options, later in this topic.
Deform group
These options provide controls that specify which
vertices are affected by the FFD.