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OffsetPoly.md

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OffsetPoly

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

Name Type Description
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

See Also

Similar calls:

Version

Availability: from Vectorworks 2012

Category