# | Line 133 | Line 133 | computesky() /* compute sky parameters */ | |
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133 | zenithbr = (1.376*turbidity-1.81)*tan(altitude)+0.38; | |
134 | zenithbr *= 1000.0/683.0; | |
135 | } | |
136 | + | if (zenithbr < 0.0) |
137 | + | zenithbr = 0.0; |
138 | /* Compute horizontal radiance */ | |
139 | if (cloudy) { | |
140 | groundbr = zenithbr*0.777778; | |
# | Line 157 | Line 159 | computesky() /* compute sky parameters */ | |
159 | ||
160 | printsky() /* print out sky */ | |
161 | { | |
160 | – | register int i; |
161 | – | |
162 | if (dosun) { | |
163 | printf("\nvoid light solar\n"); | |
164 | printf("0\n0\n"); |
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