Horizon

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wasd
Posts: 308
Joined: Tue Apr 24, 2018 7:20 pm

Horizon

Post by wasd » Fri Jan 10, 2020 12:25 pm

When modeling landscapes, be aware of curvature of the Earth. With perfectly flat ground surface, at 9.26 km from observer surface will be 6.7 meters below* tangent line drawn at observers location! That makes great difference from flat ground. You can easily see that on pictures below:
1.png
2.png
Also be aware of refraction, which at standard atmospheric conditions rises horizon by ~8% and even more at non-standard.

* along line perpendicular to tangent line
CPU Bidir (sometimes GPU Path) + Metropolis | Log Power | Core i5-4570

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