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moffset.6
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1996-07-16
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.TH MOFFSET
6 "IRIT Version 6.0"
.SH NAME
MOFFSET
CurveType MOFFSET( CurveType Crv, NumericType OffsetDistance,
NumericType AngularError )
Computes an offset of OffsetDistance with globally bounded error
(controlled by AngularError). The smaller AngularError is, the better
the approximation to the offset. The bounded error is achieved by adaptive
refinement of the Crv.
The offset is computed via matching of the tangent fields of the
given curve Crv and an arc spanning the same angular domain.
Further, AngularError measures the angular deviation allowed
between the two tangent fields.
Example:
OffCrv1 = MOFFSET( Crv, -0.4, 10 );
OffCrv2 = MOFFSET( Crv, -0.4, 5 );
computes an offset approximation to Crv with OffsetDistance of
-0.4 and AngularError of 10 and 5 degrees, respectively.
See also OFFSET, AOFFSET, LOFFSET, and FFMATCH.