Equirectangular distortion and polar coordinates were quite hard to implement in Real HDR 1.0 since the editor and the renderer were sharing the same level.
With the help of Elena Kartseva (and Tissot’s indicatrices) we created a new formula capable to get x/y coordinates, convert them in a latitude/longitude format and finally return x/y/z values for the light sources. This way, from the next update, Real HDR 1.1 will feature equirectangular perfection and beauty.
