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1020 Chapter 9: Sur face Modeling
Youcontrolthedegreeofsmoothingwiththe
I terations controls in the Display and Render
groups.
Note: The remaining controls on this rollout take
effect only when Use NURMS Subdivision is on.
Isoline Display—When on, the software displays
only isolines: the object’s or iginal edges, before
smoothing. The benefit of using this option is
a less cluttered display. When off, the s of tware
displays all faces added by NURMS Subdivision;
thus, higher Iterations settings (see
Display group
(page 1–1020)
) result in a greater number of lines.
Default=on.
Smoothed box with Isoline D isplay off (left) a nd Isoline
Display on (right).
Note: Applying a modifier to an Editable Poly
object cancels the effect of t he Isoline Display
option; the wireframe display reverts to showing
allpolygonsintheobject.Thisisnot,however,
alwaysthecasewiththeMeshSmoothmodifier.
Most deformation and mapping modifiers
maintain the isoline display, but others, such as the
selection m odifiers (except Volume Select) and the
Turn To ... modifiers, cause the interior edges to
be displayed.
Show Cage—Toggles the display of a two-color
wireframethatshowstheeditablepolyobject
before modification or subdivision. The cage
colors are show n as swatches to the right of the
check box. The first color represents unselected
sub-objects, and the second color represents
selected sub-objects. Change a color by clicking
its swatch.
The cage displays the or iginal structure of the edited object.
Typically this feature is used in conjunction with
the NURMS Subdivision feature, or with the
MeshSmooth modifier (page 1–714) ,becauseit
lets you easily toggle visibility of the unsmoothed
base object while simultaneously view i ng the
smoothed result, but it works with any modifier.
When used with a modifier, turn on Show End
Result to make Show Cage available.
Tip: Show Cage is particularly helpful when used
w ith the
Symmetry modifier (page 1–851) .
Display group
Iterations—Sets the number of iterations used to
smooth the poly object. Each iteration generates
all polygons using the vertices created f rom the
previous iteration. Range=0 to 10.
When the Iterations check box in the Render g roup
(see b elow) is off, this sett ing controls iterations
both in the viewports and at render time. When
the check box is on, this sett ing cont rols iterations
only in the viewports.
Tip: Usecautionwhenincreasingthenumberof
iterations. The number of vertices and polygons
in an object (and thus the calculation t ime) can
increase as much as four times for each iteration.
Applying four iterations to even a moderately
complex object can take a long time to calculate.