8
FFD(Cyl) Space Warp 93
Because All X is on, all control points for the
two rings wi ll be selected.)
5. On the status bar, click the Selection
Lock Toggle button to lock the selection. In
the Front viewport, drag the selected points
halfway down the height of the table.
6. Unlock the selection, and then region-select
any control point in the outer ring to select all
points in the outer ring.
7. Lock the selection and, in the Front viewport,
drag the outer ring of points down to the floor.
You now hav e a truncated cone shape over the
table.
8. Unlock the selection. In the Top viewport,
again select all the control points in the two
outer rings.
9. Scale the selected control points in, until the
radius of the inner ring of points is slightly
larger than the table top.
10. Select only the out er ring of points, and scale
them so their radius is slightly larger than the
inner ring.
If necessary, move the points, as seen from the
Front viewport, down to touch the floor again.
You now have a lattice of con trol points draped
over the table.
In this next series of steps, you’ll bind the tablecloth
to the FFD lattice, and then animate it to move
over the table.
1. In the stack display, click the FFD(cyl) entr y
again to exit the sub-objec t level. It turns gray.
2. In the main toolbar, click the Bind to
Space Warp button, and drag between the FFD
and the tablecloth.
3. Select the FFD lattice.
4. ChooseDeformgroup>AllVertices.
The tablecloth is immediately deformed
because all vertices are now affected, including
those outside the lattice volume, and Falloff
is set to 0. A falloff value of 0 means that the
distance of the vertices from the lattice doesn’t
matter. Any number greate r than 0, however,
limits the effect.
5. Set the Falloff spinner to 0.4.
No longer influenced by the FFD space warp,
the tablecloth returns to its square shape.
6. Turn on Auto Key, and go to frame 100.
7. In the Top viewport, select t he tablecloth, and
move it until it’s centered over the table.
8. Asthetableclothnearsthetable,itdroops
down to the floor, sweeps up and over the table,
and finally drapes itself over the table.