9

Blend Surface 1183
Transform Surface rollout (modification tim e)
Replace B ase S ur face—Lets you replace the parent
surface. Click the button, then click the surface to
replace the original surface.
Blend Surface
SelectNURBSobject. >Modifypanel>CreateSurfaces
rollout > Dependent Surfaces group box > Blend
Select NURBS object. > Modify panel > NURBS toolbox >
Create Blend Surface button
A blend surface connects one surface to another,
blending the curvature of the parent surfaces to
create a smooth surface b etween them. You c an
also blend from a surface to a curve, or from a
curve to a curve.
Blend surface connecting two other surfaces
Procedure
To create a blend s ur f ace:
1.
In a NURBS objec
tthatcontainstwo
surfaces, two curves, or a surface and a curve,
turn on Blend.
2. Click one surface near the edge that you want
to connect. The edge that will b e connected is
highlighted in blue. Drag to choose the other
edge you want to connect. When the ed ge you
want is highlighted, click and then drag to the
other surface. The edge of the other surface
is also highlighted in blue. Drag on the other
surfacetochoosetheedgetoconnect,andthen
release the mouse button to create the blend
surface.
The surface that owns the highlighted edge is
highlighted in yellow, to help you distinguish
whichedgeyouarechoosingwhentwosurfaces
have coincident edges.
Theblendsurfaceiscreated. Changingthe
position or the c urvature of either parent
surface will change the blend surface as wel l.
3. Adjust the blend parameters.
Interfa ce
While a blend surface sub-object is selected, a
rollout with t he blend parameters is displayed at
the bottom of the Modify panel.
Blend Surface rollout (creation time)
"Tension" affects the t angent between a p arent
surface and the blend surface. The greater the
tension value, the more closely the tangent