8

604 Chapter 8: Modifiers
5. On the main toolbar, click Select And
Move, then move t he objects in the viewport to
order them along the Z axis with the NGons at
the bottom and the lines above the NGons.
6. Select the bottom NGon.
7. OntheModifypanel,chooseEditSpline
from the Modifier List.
8. In the Geometry rollout, click A ttach.
9. Select the remaining NGon and lines in an
ascending order, as numbered in the image.
Note: The order of selection is important. The
CrossSection modifier uses the selection order
to define the skin.
Example continued: Lining up the vertices:
1.
On the Modify panel, choose the Vertex
sub-object level in the stack display.
Lining up the first vertex of each spline is
important to prevent the surface from twisting.
2. UseCTRL+clicktoselecttherightmostvertex
of each line and the bottommost vertex of each
NGon.
3. On the Geometry rollout, click Make First.
Aligning the first vertex is important. This is
where the seam forks, going from a closed to an
open spline.
Example continued: Using CrossSection a nd S urface
to " skin" the sha pes:
1.
On the Modify panel, choose
CrossSection from the Modifier List.
The CrossSection modifier connects the splines
at the vertices.
2. On the Modifiers L is t, choose Surface.
The Surface modifier generates a p atch surface
based on the splines.
3. In the modifier stack display, choose the
CrossSection modifier.