Page 352 - Kitab3DsMax

Part III: Modeling Basics

FIGURE 11.27
The Wave modifier can gently wave a flag.

Free Form Deformer modifiers
The Free Form Deformers category of modifiers causes a lattice to appear around an object. This lattice is
bound to the object, and you can alter the object’s surface by moving the lattice control points. Modifiers
include FFD (Free Form Deformation) and FFD (Box/Cyl).
FFD (Free Form Deformation) modifier
The Free Form Deformation modifiers create a lattice of control points around the object. The object’s sur-
face can deform the object when you move the control points. The object is deformed only if it is within the
volume of the FFD lattice. The three different resolutions of FFDs are 2 × 2, 3 × 3, and 4 × 4.
You can also select to display the lattice or the source volume, or both. If the Lattice option is disabled, only
the control points are visible. The Source Volume option shows the original lattice before any vertices were
moved.
The two deform options are Only In Volume and All Vertices. The Only In Volume option limits the verti-
ces that can be moved to the interior vertices only. If the All Vertices option is selected, the Falloff value
determines the point at which vertices are no longer affected by the FFD. Falloff values can range between 0
and 1. The Tension and Continuity values control how tight the lines of the lattice are when moved.
The three buttons at the bottom of the FFD Parameters rollout help in the selection of control points. If the
All X button is selected, then when a single control point is selected, all the adjacent control points along

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