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Join Surfaces Dialog 1233
parent curves, in order to maintain smo othness.
(The amount of deviation depends on how far
from t angent the two input curves were at the join.)
A problem ar ises when the gap is too small. In this
case, the software generates the blend but because
there isn’t enough room for it, the resulting curve
has a loop. To avoid hav ing this loop, set the
Tolerance higher than the gap distance.
If you set the tolerance to 0.0, the software chooses
a value to use for the Tolerance.
Tension 1—Adjusts the tension of the new curve at
the end of the first curve you picked.
Tension 2—Adjusts the tension of the new curve at
the end of the second curve you picked.
Prev iew—When on, the effect of the zip or join is
previewed in viewports. Default=on.
Join Surfaces Dialog
Modify panel > Selec t NURBS surface sub-object. >
SurfaceCommonrollout>Joinbutton>Jointwo
surfaces in a viewport.
This dialog lets you choose the way to join t wo
surfaces.
Inter face
ZIP tab
This tab chooses the zip algorithm. Zipping
concatenates the CV lattices of the two original
surfaces. Zipping can change the shape of the
original surfaces, but compared to joining it
usually produces a simpler surface that is easier
to edit.
By default, the ZIP tab is active.
If both curves are untrimmed point surfaces, the
result of zipping is a point surface. In all other
cases, the result is a CV surface.
Tolerance—Adistancein3dsMaxunits. Ifthe
edgesofthetwooriginalsurfacesarecloserthan
this distance, zipping deletes one row (or column)
of the points or CVs in order to avoid creating a
coincident point or CV row (or column) in the
new zipped surface.
Tension 1—(Disabled.)
Tension 2—(Disabled.)
Join tab
This tab chooses the join algorithm. (This method
was the only way to join surfaces in 3ds Max prior
to v3.) Joining first creates a blend surface between
the two original surfaces, and then ma kes all three
into a single sur face. Joining does not change the
shape of the two original surfaces.
If both surfaces are point surfaces, the result is
a point surface. If one or both surfaces are CV
surfaces, the result is a CV surface.
Tolerance—Adistancein3dsMaxunits.Ifthegap
between the surfaces you are joining is greater
than this value, the join is c reated by first creating
a blend surf ace and then joining the three parts.
If the gap is less than this value, or if the surfaces
are overlapping or coincident, the software doesn’t
create the blend.