I was wondering whether it would be possible to implement an equidistant projection option for shading masks and sun path visualisations in Ladybug.
We are currently performing outdoor comfort assessments using RayMan. For this workflow, the sky/shading mask generated from the observation point must be imported into RayMan, which expects an equidistant (angular fisheye) projection. At the moment, the default stereographic projection used in Ladybug causes distortions near the horizon when imported into RayMan, leading to an overestimation of horizon obstructions.
As a workaround, I managed to generate an equidistant projection by running a Point-in-Time View-Based simulation in Honeybee using an angular fisheye view. This produces the correct projection for RayMan after some image post-processing and conversion to BMP format.
However, this workflow is not so straightforward. I was therefore wondering whether an equidistant projection option could eventually be added directly to Ladybug’s sky mask / sun path visualization tools.
Besides RayMan compatibility, I think this could also be useful for visibility and urban obstruction studies, since I believe equidistant projections provide a more intuitive representation of horizon obstructions.
Thanks a lot.
Bianca