Bcc.OffsetChainList({ChainList, OffsetDistance, OffsetDirection, IsSharpCorner, IsIntersectAll, Tolerance)

Description

This function can be used to offset a chain a desired distance.

Parameters

The primary input of this function is a Table which can include the following keys:

• ChainList – The input list of chains chain to be offset.  Please see the ChainList topic for more details on this table formatting.
• OffsetDistance – double value of the distance to offset the input chain
• OffsetDirection – "Left" or "Right" are the valid inputs.  Defaults is "Left" if the parameter is excluded.
• IsSharpCorner – boolean value of whether the corners of the resulting chain should be filleted or sharp. Defaults is false if the parameter is excluded.
• IsIntersectAll – boolean value of whether to trim the resulting intersections between 2 closed chains if an overlap occurs.  Default is false if the parameter is excluded.
• Tolerance – double representing the tolerance used for the offset.  CAD system tolerance is used if this parameter is excluded.

Return

Returns an array of ContourChain lists

Examples

-- Define a 50mm square in a counterclockwise direction

pnt1 = { -25,-25, 0}

pnt2 = {  25,-25, 0}

pnt3 = {  25, 25, 0}

pnt4 = { -25, 25, 0}

-- Create the chain utilizing the points

chainList = {{Type="Polyline", List={pnt1, pnt2, pnt3, pnt4}}

-- Offset this chain by 10mm

-- Store the resulting chain in retList

retList = Bcc.OffsetChainList({ChainList=chainList, OffsetDistance=10, OffsetDirection="Right", IsSharpCorner=false, IsIntersectAll=true, Tolerance=0.003})