Hello everyone!
Recently, I encountered an issue related to the surface normal direction in Honeybee. As we all know, in EnergyPlus, the surface normal is oriented from the interior toward the exterior, whereas in Radiance, it is oriented from the exterior toward the interior.
When modeling a room using Honeybee Rooms, Honeybee automatically sets all surface normals to face outward. However, when the model is exported and simulated in Radiance, I checked the generated .rad files and noticed that the normals were not automatically flipped to face inward as expected.
This inconsistency left me quite confused—shouldn’t Honeybee adjust the surface normals automatically when switching to Radiance?