# | Line 128 | Line 128 | computesky() /* compute sky parameters */ | |
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128 | if (zenithbr <= 0.0) | |
129 | if (cloudy) { | |
130 | zenithbr = 8.6*sundir[2] + .123; | |
131 | < | zenithbr *= 1000.0/683.0; |
131 | > | zenithbr *= 1000.0*.0064/3.; |
132 | } else { | |
133 | zenithbr = (1.376*turbidity-1.81)*tan(altitude)+0.38; | |
134 | < | zenithbr *= 1000.0/683.0; |
134 | > | zenithbr *= 1000.0*.0064/3.; |
135 | } | |
136 | if (zenithbr < 0.0) | |
137 | zenithbr = 0.0; |
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