Parallel vectors in dynamo - isolating them

[c.poupin]

ok it’s fixed (in my preview post)

Parallel vectors in dynamo - isolating them

Hello An example with Cross Product [image] 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])

@Alien

Could you give a brief explanation of your script pls?

when 2 vectors are parallel to the Z component of the product Cross is equal to 0