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Mirror Surface 1189
Procedure
To creat e a mirror surface:
1.
In a NURBS object that contains at least
one surface, turn on Mirror.
2. On the Mirror Surface rollout, choose the axis
or plane you want to use.
3. Click the surface you want to mirror, and drag
to set the initial distance of the mirror surface.
The mirror surface is created. A giz mo (yellow
by default) indicates the direction of mir roring.
Transfor m ing the mir ror sur face’s g izm o
changes the orientation of the mirror, letting
you mirror along an axis that isn’t a ligned with
a local coordinate axis.
The Flip Normals control lets you flip the
surface normals at creation time. (After
creation, you can flip normals using controls on
the Surface Common rollout.)
4. Adjust the Offset parameter.
Inter face
While a mirror surface sub-object is selected, the
Mirror Surface rollout appears at the bottom of the
Modify panel. Also, a gizmo (yellow by default)
indicates the mirror axis.
Mirror Surface rollout (creation time)
Mirror Axis group
The Mirror Axis buttons control the direction in
which the original surface is mir rored.
You can’t transform the mirror surface directly
(that would simply transform the mirror surface
and itsparentsurfaceatthesametime). You
transform it by t ransforming its gizmo. By us ing
transforms you can mirror about an arbitrary axis,
rather than using one of the Mirror Axis presets.
When you transform a mirror surface, you are
actually transforming the mirror plane, so Rotate
has the effect of rotating the plane about which
the surface is mirrored. (This is like rotating the
mirror gizmo in the Mirror modifier.)
Tip: A convenient way to guarantee that a surface
is symmetrical is to create one side of the surface,
mirror that surface, and then create a blend
between the two sides.
Offset—Controls the mirror’s distance from the
original surface. This parameter is animatable.
Flip Normals—Lets you flip the surface normals.
Mirror Surface rollout (modification time)
Mirror Axis group
The Mirror Axis buttons control the direction in
which the original surface is mir rored.
You can’t transform the mirror surface directly
(that would simply transform the mirror surface