8
1220 Chapter 9: Sur face Modeling
Radius Interpolation group
This g roup box controls the radius of the fillet.
TheRadiusInterpolationsettinghasnoeffect
unlessoneorbothsurfacesthatdefinethefillet
have curvature to them.
Linear—When chosen (the default), the radius is
always linear.
Cu bic—When chosen, the radius is treated as a
cubic function, allowing it to change based on the
parent surface’s geometr y.
Seeds group
These spinners adjust the seed va lues for the fillet
surface. If there is more than one way to construct
the fillet, the software uses the seed values to
choose the nearest edge for that surface.
Surf ace 1 X—Sets the local X coordinate of the seed
onthefirstsurfaceyouchose.
Surf ace 1 Y—SetsthelocalYcoordinateoftheseed
onthefirstsurfaceyouchose.
Surf ace 2 X—Sets the local X coordinate of the seed
on the second surface you chose.
Surf ace 2 Y—SetsthelocalYcoordinateoftheseed
on the second surface you chose.
Trim First Surface and Trim Second Surface
groups
For e ach of the parent surfaces, these controls
affect trimming.
Trim Surfa ce—Trims the parent surface at the edge
of the fillet.
Flip Trim—Reverses the direction of the trim.
Replace First Surf ace and Replace Second
Surf ace—
Let you replace the parent surfaces. Click
abutton,thenclickthesurfacetoreplacethe
original first or second surface.
Cr ea ting and Editing Point
Sub-Objects
SelectNURBSobject. >Modifypanel>CreatePoints
rollout
Select NURB S object. > Mod ify panel > NURBS toolbox
Keyboard > CTRL+T to tog gle NURBS toolbox display
(KeyboardShortcutOverrideTogglemustbeon.)
In addition to the points that are an integral part of
point curve (page 1–1108)
and
point surface (page
1–1103)
objects, you can create "freestanding"
points. Such points can help you construct point
curves by using the
Curve Fit (page 1–1158)
button. You also use dependent points to trim
curves.
You create individual points as NURBS sub-objects
while you are modifying NURBS. To create points
individually, use the Create P oints rollout or the
NURBS
toolbox (page 1–1085)
.
Toolbox B uttons for Creati ng Poi nts
These are the toolbox buttons for creating point
sub-objects:
Create an independent
point (page 1–1221)
.
Create a dependent
offset point (page
1–1221)
.
Create a dependent
cur ve point (page
1–1222)
.
Create a dependent
curve-curve intersection
point (page 1–1225)
.
Create a dependent
surface point (page
1–1223)
.