KekLib.PolygonGeometry

PolygonGeometry.py

borrowed from https://stackoverflow.com/questions/68104969/offset-a-parallel-line-to-a-given-line-python/68109283

makeOffsetPoly(oldX, oldY, offset, outer_ccw=1)

there seems to be a bug when outer_ccw = -1 for inner offset use a negetive offset instead

normalizeVec(x, y)