Kia ora,
I’m currently experimenting with the awesome new Celestial Vault plugin, but I’ve run into a bit of a roadblock regarding how it aligns with the world compared to the traditional SunSky actor.
It feels like there is a 90-degree discrepancy in how the two systems define “North.” From what I can tell, SunSky treats the Positive X-axis as North, while Celestial Vault seems to follow GIS conventions by using the Positive Y-axis.
For context, I am setting up a scene based in the Southern Hemisphere (Milford Sound, NZ: Latitude -44.64, Longitude 167.90). At solar noon (12:00 PM), the sun should face North toward the equator, but because of this axis difference, it appears off to the side (East or West depending on my setup).
I’ve tried a few workarounds, like parenting the Celestial Vault to a rotated empty actor or using the “Transform Origin Actor” override. However, because the Day Sequence system understandably locks and drives the actor’s transform, my manual adjustments get completely reset the moment I scrub the Time of Day preview slider.
I’m not entirely sure if this is an actual bug, or if I’m just missing a hidden setting! I couldn’t find a “North Yaw” or “North Offset” property like the one we have in the SunSky actor to bridge this gap. Any guidance on how to properly align this with a standard Unreal landscape would be hugely appreciated!
Many thanks for
Marie