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Anteworld - Outerra Game
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visibility
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Topic: visibility (Read 6085 times)
aWac9
Hero Member
Posts: 2601
newbie
visibility
«
on:
March 11, 2018, 03:22:19 pm »
I was wondering why in similar latitudes there are different visibilities within outerra.
conditions F11 are identical but it seems that in one there is a dense or polluted atmosphere that does not allow to see or have vision.
why
An example
1º. Pokhara with the Himalayas in the background
2º. Tepuy in the Venezuelan Amazon.
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cameni
Brano Kemen
Outerra Administrator
Hero Member
Posts: 6721
No sense of urgency.
Re: visibility
«
Reply #1 on:
March 11, 2018, 05:35:25 pm »
It's physical.
Visibility is limited by haze, and haze mostly depends on the sun angle. Haze is produced by sun rays that get scattered into your view (in-scattered), obscuring the reflection from terrain (which also get attenuated by out-scattering).
(see
https://software.intel.com/en-us/articles/ivb-atmospheric-light-scattering
)
Low sun angles scatter more, producing more haze.
Lower altitudes have denser air → again more in-scatter and resulting haze.
To compare visibility you'd have to provide similar conditions not just for the latitude, but also for the local time of day (solar time) and elevation.
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aWac9
Hero Member
Posts: 2601
newbie
Re: visibility
«
Reply #2 on:
March 11, 2018, 07:16:53 pm »
Thanks for answering Cameni.
still in the Amazon I can not get clear vision in any of the angles. I will study it.
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