Curtain panel normals


#1

I am trying to quantify the direction of total exterior glazing. The goal is to produce a Revit schedule as shown in the attached graphic. I have been successful in getting normals for each curtain panel, then comparing them with the X axis vector to get the direction of each panel.

 

 

 

 

 

 

 

X axis being the East direction. The problem is this:

The normals sometimes face the exterior (as desired), but sometimes face the interior, which is incorrect. Any suggestions of how to control the Exterior / Interior of curtain panels?

Glazing Orientation Schedule

 

 

 

 

 

 

 

 


#2

I am a little surprised to see no one knows how to control the Normals of a geometry. I would think that ability is critical for numerous variety of analysis.

I would appreciate any feedback, including a completely new direction for accomplishing my end goal as described above.

 

Thanks!

 


#3

How did you get the panel normals?


#4

By drawing perimeter polylines for all panels, surface by patch, then normal through point. I couldn’t use “CurtainPanel.PanelPlane” node because it was it was dropping some panels.