Friday 2010-07-09 Dev. update and Discussion Thread

[Rodolphe]

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Congratulations to the villagers of Ellesborough, Buckinghamshire.

Following the publication of our last friday update, these special guests have received the extreme honour, of becoming exclusive virtual members of the BoBSoWNoSe * community.




Ellesborough Neighbourhood looking southbound :



* BoB SoW North Sector : ))




At 51°N, even during winter solstice, I doubt the sun peeps above the horizon, to the south ??

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[Blackdog_kt]

The earth's ecliptic plane (ie, the plane where the sun's trajectory in relation to the earth lies, if we where to consider the earth as stationary and the sun as moving in relation to it) is near the equator. The equatorial plane doesn't coincide with the ecliptic one because of the tilt in the earth's axis, but it is close.

As such, the sun might move east to west during the day, but its apparent trajectory is always offset towards the equator, regardless of where the observer is standing. What this means is that for an observer in the north hemisphere the sun's apparent trajectory is still an east to west arc across the sky, but this arc is offset to the south. Notice, the arc is offset...the rise and sundown points are still east and west, it's the arc that connects them that exhibits the shift towards the equator. For a southern hemisphere observer it's similar but offset to the north.

Now, i don't know exactly how high the sun should be, or how much to the south the arc of its apparent trajectory lies in the place we see in the screenshots, but there definitely should be a shift to the south in regards to the sun's trajectory across the sky.

Pretty impressive that they model such things if you ask me, as that could hint at more nifty features for the future...night bombing missions and navigating by the stars anyone?

[Tbag]

Rudolphe, how can you be so sure that both images depict the same area?

[leggit]

Originally Posted by zapatista

i hope you were referring to the sky when you said the colour range was right, not the scenery

in the most recent screenshots with the low flying cluster of german aircraft over Brittan, the colour of trees and scrubs (and their spacing), looks to me more like the french maquis in a long bleaching summer, then the lush english vegetation in southern england (where i lived for 6 yrs)

since oleg repeatedly stated this is wip and vegetation colours and even trees shapes and types are not final, its not really worth debating if its right or wrong and i am not really concerned

somebody in the last couple of weeks posted 6 or 8 photographs of southern englands scenery (hedges and roads ?), and those colours were spot on from the way i remember them

here they are: posted by major-setback a few weeks ago: http://forum.1cpublishing.eu/showthr...hedges&page=15

the brightest green ones could have been after a couple of rainy days and then some hot/warm days, and the more washed out greens (still much brighter and more colourfull then the recent ones seen in oleg's latest screenshot) would have been after a week or 2 of summer weather without any rain. maybe we need to have a wip-around and get oleg a package deal for a weekend in southern england, after all it is summer there now and the colors should be about right. anybody here from southern england that can comment more on these colors ?

Sigh....1st of all let me say i've lived in southern england all my life (West Sussex) so i'm well aware of how it looks. you talk about colour as if its a fixed state. It's not it changes constantly. Colour or your perception of colour is determined by all sorts of factors; light weather the seasons time of day. You "remember" southern Britain as lush and green yes it can be, right now because we haven't had any rain in a few weeks its looking rather dry and sunburnt. the grass is all yellow and burnt etc. my point is what you think something should look like and what would be a more realistic depicition are sometimes very different...most people look but only a few see.

[_RAAF_Stupot]

Originally Posted by Rodolphe

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Congratulations to the villagers of Ellesborough, Buckinghamshire.

Following the publication of our last friday update, these special guests have received the extreme honour, of becoming exclusive virtual members of the BoBSoWNoSe * community.




Ellesborough Neighbourhood looking southbound :



* BoB SoW North Sector : ))




At 51°N, even during winter solstice, I doubt the sun peeps above the horizon, to the south ??

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It would, as it is below the arctic circle.

How did you figure out that Ellesborough location?

I think you are right about the location, BTW. You can see a river doing a bend in the screenshots, and if you check on Google maps you can see that the River Thames does that same bend!

It's funny becuase I would have guessed that the screenshots would have been taken from a location much further to the south - but maybe I am forgetting that England really is quite a small place - there is some statistic like no place in England is more than 100 km from the sea....... (or something like that).

[philip.ed]

Originally Posted by leggit

Sigh....1st of all let me say i've lived in southern england all my life (West Sussex) so i'm well aware of how it looks. you talk about colour as if its a fixed state. It's not it changes constantly. Colour or your perception of colour is determined by all sorts of factors; light weather the seasons time of day. You "remember" southern Britain as lush and green yes it can be, right now because we haven't had any rain in a few weeks its looking rather dry and sunburnt. the grass is all yellow and burnt etc. my point is what you think something should look like and what would be a more realistic depicition are sometimes very different...most people look but only a few see.

Ditto, lived in Kent all my life, and besides from some of the evergreens and areas where there may be more precipitation, leggit is spot on. I mean, we've had really hot weather recently, and then the other day it rains and there's an absence of sunlight and bingo, the grass is already greener

[Rodolphe]

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Originally Posted by Tbag

Rudolphe, how can you be so sure that both images depict the same area?

Originally Posted by _RAAF_Stupot

How did you figure out that Ellesborough location?

Use Google Earth to compare landscape, river valleys and woods and forests with those depicted on Oleg's screens. You Guys, that's pretty accurate !

Start with the high altitude view than go down to the lower / ground level view.





Sun position issue.


Hypothesis : The observer position alone has moved verticaly. The time is frozen.

On the high level view, check the relation between the Isle of Wight and the west coast of French Contentin and you'll find the sun has a southerly position.

On this ground level screenshot, look at the sun peeping south above the horizon.




Except if the observer lives near Tromsø, at midwinter in the south UK , the sun should rise on a more eastward direction and should get a slightly more westerly sunset.


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[Tbag]

Thanks for the explanation Rudolphe, that makes sense!

[caprera]

Fire sucks

[ECV56_LeChuck]

Originally Posted by caprera

Fire sucks

Very productive comment.