The ShineExp UtilityPlugin renders the active viewport to a TIFF file. The TIFF file includes luminance and illuminance data that can be used for lighting analysis. (This is the 32-bit SGI LogLUV image type.)
The same utility was available in Autodesk VIZ4 under the name Lighting_Data_Export.
Presses the Export button in the Utility Plug-in, causing the export to the specified file. Returns true on success, false otherwise.
Presses the pick file button in the Utility Plug-in, causing a file selection dialog to be displayed. Returns true if a valid output file has been specified, false otherwise.