Validation

Insight Lighting Analysis with Revit leverages the A360 Rendering service.

A360 Rendering uses bidirectional ray tracing but with an additional intelligent algorithm to determine the ray order such that the most important rays are generated first. The result is a much faster convergence to final results. The engine calculates all the bounces that are important for making conclusions. The algorithm is called Multidimensional Lightcuts (Siggraph 2006), with trade secret/patented extensions. This approach differs from other tools that follow the bounces of a photon even past the point where it practically affects the rendering.

The engine has been validated with the help of one of the top daylighting firms in the country. They used a consistent model to compare A360 Rendering illuminance outputs to both Radiance and to actual light level measurements of the space.