Download SET User Guide - John J. Jacobs

The GET SET Command
Using the REPAIR SURFACE Function in GET SET
The elements required to create this trimmed surface are:
• 1 Nsurface S
• n contours Ci, i=0,n-1
where
C0 is the external contour,
Ci, i=1,n-1, are the internal contours
Nu and Nv are respectively the number of u discontinuities and v discontinuities
where the angle between the right and left tangents is more than 0.1 degree.
Apply the phases of this algorithm:
• Subdivide the trimmed surface TS at each tangent discontinuity parameter
where the angle between the right and left tangents is more than 0.1 degree.
(Trim the first trimmed surface TS with the u iso line (resp. v iso line) at the u
discontinuity parameter (resp. at the v discontinuity parameter). The boundary
for each sub trimmed surface TSi created, is a part of the first boundary C, and a
part of the u iso line or the v iso line.
• Sew all these trimmed surfaces and create one composite trimmed surface.
Please note: TRIM SURFACE subdivides surfaces at each discontinuity if the
angle between the right and left tangents at the discontinuity point is more than 0.1
degree. This tolerance can be decreased if you have problems with other
commands such as INTERSECT ENTITY. This decreases the repair surface
tolerance.
SET User Guide
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