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44 Chapter 10: Precision and Drawing Aids
Bounding Box—
Snaps to one of the eight corners
of an object’s bounding box.
Perpendicular—Snaps to the perpendicular point
on a spline, relative to the previous point.
Tangent—Snaps to a tangent point on a spline,
relative to the previous point.
Vertex—Snaps to vertices of mesh objects
or objects that can be converted to editable
meshes. Snaps to segments on splines. Key board
shortcut=
Alt+F7 .
Endpoint—Snapstotheendpointsofedgeson
meshes or spline vertices.
Edge/S egment—Snaps anywhere along
edges(visibleorinvisible)orsplinesegments.
Keyboard shortcut=
Alt+F10 .
Midpoint—Snaps to the middle of edges
on meshes and spline segments. Keyboard
shortcut=
Alt+F9 .
Face —Snaps anywhere on the surface of a
face. Back faces are culled, so they have no effect.
Keyboard shortcut=
Alt+F11 .
Ce nter Face—Snaps to the center of triangular
faces.
NURBS Snaps
These options snap to objects or sub-objects in a
NURBS model (page 3–980).
The NURBS snaps settings are aids for creating
and transforming objects, and are not constraints.
Thesoftwaredoesnotmaintaintherelationship
between the NURBS object and other objects you
create or transform.
CV—Snaps to a CV sub-object (page 3–926) in a
NURBS curve (page 3–980) or NURBS surface
(page 3–981).
Point —Snaps to a point sub-object (page 3–995) in
aNURBSmodel.
Curve Cen ter—Snaps to the cen ter of a NURBS
curve.
The center of a NURBS curve is calculated
parametrically, and might not be the same as the
curve’ s apparent visual center.
Curve Normal—Snapstoapointnormaltoa
NURBS curve.
This snap operates only while you are creating
a new object that requires two or m ore clicks to
create.
Curve Tange nt—Snaps to a point tangent to a
NURBS curve.
This snap operates only while you are creating
a new object that requires two or m ore clicks to
create.
Curve Edge—Snaps to the edge of a NURBS curve
(the cur rent object moves or is created to lie along
the c urve).
Curve End —Snaps to the end of a NURBS curve.
Sur f Center—Snaps to the center of a NURBS
surface.
The center of a NURBS curve is calculated
parametrically, and might not be the same as the
curve’ s apparent visual center.