Parallel vectors in dynamo - isolating them

Revit
22

Hello
An example with Cross Product

image
image1492×516 106 KB 

import sys
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

def uniqueVectors(lstVect, tolerance = 0.001):
    if len(lstVect) > 0:
        vectA =lstVect.pop(0)
        otherV = []
        for v in lstVect:
            if abs(v.Cross(vectA).Z) > tolerance:
                otherV.append(v)
        return [vectA] + uniqueVectors(otherV)
    else:
        return []
OUT = uniqueVectors(IN[0])