After deconstructing a list of Breps, the surface normals of the resulting faces are inconsistent. Similarly, if planes are added to the surfaces, they are also inconsistent — not all X axes are parallel and soem are flipped.
Is there a good way to check surface normals in Grasshopper, similar to the Dir command in Rhino?
How can this be avoided and fixed? Any help is appreciated, thanks!
surface_normals.gh (12.1 KB)
please internalize your Geometries and repost the GH file
by the way, the surface Normal is a single vector that is perpendicular to a given surface at a given point, it does have direction and magnitude
if you create a plane from its Normal (from its Z axis), you are not providing any info about where plane_X and plane_Y axis are oriented 
for that reason that component is often followed by an Align Plane component
Thank you for your explanation inno, it is much appreciated! Yes my use of the term “surface normal” is not correct.
surface_normals.gh (15.0 KB)
