def union(self, other, triedReversed=False, buf=0):
poly = toPolygon(other)
if not poly:
return super().union(other, triedReversed)
union = polygonUnion((self.polygons, poly), buf=buf)
orientation = VectorField.forUnionOf((self, other))
return PolygonalRegion(polygon=union, orientation=orientation)
def unionAll(regions, buf=0):
regs, polys = [], []
for reg in regions:
if reg != nowhere:
regs.append(reg)
polys.append(toPolygon(reg))
if not polys:
return nowhere
if any(not poly for poly in polys):
raise RuntimeError(f'cannot take union of regions {regions}')
union = polygonUnion(polys, buf=buf)
orientation = VectorField.forUnionOf(regs)
return PolygonalRegion(polygon=union, orientation=orientation)