Creates a four-sided surface
by filling a region defined by four intersecting boundary curves.
The resulting surface can maintain continuity with surrounding surfaces
depending on the options set.
In order for a square
surface to be created, the following conditions must exist:
- The four boundary curves must intersect.
You can ensure the curves intersect by snapping their end points
to a common grid line, or by magnet snapping the end point of one
curve to the end point of another.
- You must select the curves in either
a clockwise or counter-clockwise direction.
Surfaces > Square > 
- Continuity Type
-
Sets
the type of surface tangency created.
Fixed
Boundary does not ensure continuity at the surface curves.
Tangent builds
a smooth, continuous surface from the selected surface curves. When Tangent is
on, the Curve Fit Checkpoints option
becomes available. It specifies how accurately the Square surface
will be built.
Implied
Tangent creates a surface tangency based on the normal
of the plane where the selected curve resides.
- Curve Fit Checkpoints
-
Sets
how many isoparms are used to achieve continuity across the surface
curve. Larger values might create continuity with more precision,
but the surfaces might be less useful. This is especially likely
when the surface curves intersect acutely.
- End Point Tolerance
-
Global tolerance
means the Positional value you set in
the Preferences window is used.
Positional tolerance sets how close the end points need to be in
order to be considered coincident.
Local tolerance
lets can enter a new value to override the Positional tolerance
value you set in Preferences.
- Rebuild
-
Rebuild provides an option
to rebuild the surface curves used to generate the Square surface.
This can improve curve parameterization in some cases.
- Output Geometry
-
Specifies
the type of geometry created. (Subdiv means
subdivision surfaces.)
