VS:OffsetPoly

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Description

Offsets a polygon or polyline. Must handle open & closed polys. A positive distance offsets to the outside; negative to the inside. Should remove self-intersecting segments from the result. Should support "smooth" vs. "sharp" offsets.

FUNCTION OffsetPoly(
           h                        :HANDLE;
           offsetDistance           :REAL;
           numberOfOffsets          :INTEGER;
           consolidateVertices      :BOOLEAN;
           sharpCorners             :BOOLEAN;
           conversionRes            :INTEGER;
           consolidationTolerance   :REAL) : HANDLE;

def vs.OffsetPoly(h, offsetDistance, numberOfOffsets, consolidateVertices, sharpCorners, conversionRes, consolidationTolerance):
    return HANDLE

Parameters

h		HANDLE
offsetDistance		REAL
numberOfOffsets		INTEGER
consolidateVertices		BOOLEAN
sharpCorners		BOOLEAN
conversionRes		INTEGER
consolidationTolerance		REAL

Remarks

(_c_, 2011): The routine was introduced undocumented by VW10 (2005), then made public by VW17 (2012).

OffsetPoly fails:

• on holes, they are ignored
• when by an offset less than 1 unit: it copies in place, instead of offsetting (tested from VW 2011 through 2014). For example:

• Units meter, offset 1m > succeeds
• Units meter, offset 0.9m > fails
• Units cm, offset 1cm > succeeds
• Units cm, offset 0.9cm > fails

Version

Availability: from Vectorworks 2012

See Also

Similar calls:

• VS:OffsetPolyN
• VS:OffsetHandle

Similar calls:

• [[VS:OffsetPolyN]]
• [[VS:OffsetHandle]]