The files in this archive are a sample implementation of the analytical skylight model presented in the SIGGRAPH 2012 paper "An Analytic Model for Full Spectral Sky-Dome Radiance" by Lukas Hosek and Alexander Wilkie Charles University in Prague, Czech Republic Version: 1.0, May 11th, 2012 Please visit http://cgg.mff.cuni.cz/projects/SkylightModelling/ to check if an updated version of this code has been published! This archive contains the following files: README.txt This file. ArHosekSkyModel.h Header file for the reference functions. Their usage is explained there, and sample code for calling them is given. ArHosekSkyModel.c Implementation of the functions. ArHosekSkyModelData.h Coefficient data. Please note that the source files are in C99, so that when e.g. compiling this code with gcc, you have to add the "-std=c99" or "-std=gnu99" flags.