8

TurboSmooth Modifier 857
Inter face
Pick Locations—Click to turn on Pick mode.
Whileinthismode,themousecursorchangesin
appearance when over part of the spline that can
be affected by the Trim /Extend modifier. Click
to either trim or extend the spline, based on the
settings below. Default=Auto.
Operation group
Specifies the t ype of operation that’s performed on
the selected spline.
Auto—When this is chosen, a Trim is first looked
for and, if not found, an Extend is attempted. In
most cases, a Tr im will occur when Auto is chosen.
An Extend can occur, however, in cases where
an open spline exists without intersectin g other
splines.
Trim Only—Performs only trims. Turn on Pick
Locations, and then click the spline section you
want to trim.
Extend Only—P erforms only extends. Click Pick
Locations, and then select the open spline section
you want to extend.
Infinite B oundaries—For the purposes of
calculating intersections, tur n this on to treat open
splines as infinite in length. For example, this lets
you trim one linear spline against the extended
length of another line that it doesn’t actually
intersect.
Note: As the number of open splines in the shape
increases, the chance of finding an intersection,
when using Infinite Boundaries, increases as well.
This can produce results you might not have
expected because of projected spline intersect ions
you hadn’t considered, particularly if you’re in
Auto mode. For predictable results, avoid us ing
Auto mode when using Infinite B oundaries.
Intersection Projection gro up
These options specify how the Trim and Extend
functions determine a valid intersection.
View—Projects the lines onto the active v iewport,
andjudgestheintersectionsaccordingly.These
are the intersections as you see them i n the active
view por t.
Construction Pla ne—Projects the lines onto the
current construction plane.
None (3D) — Considers only true intersections as
the splines exist in 3D space. They must physically
intersect to be considered.
Tur boS mooth M odi fie r
Make a selection. > Modify panel > Modifier List >
Object-Space Modifiers > TurboSmooth
The TurboSmooth modifier, like MeshSmooth
(page 1–714)
, s moothes geometry in your scene.
The differences between the two are as follows:
•TurboSmoothisconsiderablyfasterand
more memory-efficient than MeshSmooth.
TurboSmooth a lso has an option for E xplicit
Normals, unavailable in MeshSmooth. See
Explicit Normals .
• TurboSmooth provides a limited subset of
MeshSmooth functionality . In particular ,