Quote:
Originally Posted by ThePrody
i will try to test with different Earth Radius values and see if i can get a more realistic hull-down and vanishing hull effect .
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if u will do that all the navigation fixes will be inaccurate and misplaced also the lang / long and the equator will be also misplaced ...and also each port too
if u wish to modify the radius only to see how to ship disappear bottom up u don't need to do that ....
it's very simple use this formula and u will find how far is the horizon from u
D= √h² + 2rh
d = distance to the horizon
h = height of the observer above sea level
r = radius of the Earth
Earth radius r=6,371km
This equation will work for any size world, and any height of observer. Anyone using this equation should be aware, however, that its result, d, is the straight-line distance from the observer's eyes to the horizon, and not the distance to the horizon along the ground (which will be longer).
for a person with the eye level of 2m the horizon will be at 5km beyond that all object will disappear bottom up
PS. A flat plane can not make horizon it's geometrically impossible