water in altitude - Printable Version

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water in altitude - redko - 10.03.2010

Hi

Does anyone know who the make water but in altitude? the idea would be to get lakes on craters, so of course higher than the sea level...

There is some on Kyushu, but we could use to to create acid lakes like those we have in Sumatra for exemple.

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Re: water in altitude - dunkelgrun - 10.03.2010

redko Wrote:Hi

Does anyone know who the make water but in altitude? the idea would be to get lakes on craters, so of course higher than the sea level...

There is some on Kyushu, but we could use to to create acid lakes like those we have in Sumatra for exemple.

Lakes at altitude are possible; the strictest requirement is that they are totally flat. Even then, at certain angles to the water, it is possible to see 'under' them which creates a very odd and unwanted effect. Roads and railways can cross water at altitude, but all 'working' bridges have to be at zero feet/metres, so they can't be used. We do now have bridge objects in the Unlocked FMB though, so the effect is ok even if they won't work.
There are lakes at altitude on the NW of the stock Burma map (the first map on which it was done) if you want to have a look. Zoom to the lake surface and look at the water's edge, and you may see some of the off-putting effects.

To make lakes at any altitude is exactly the same process for sea level. Add them to map_c then sort out the water edges. If they are large then map_t will have to be adjusted too.

:cheers:

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- redko - 11.03.2010

mmmm million thanks !! I will take a look to that map specially map_c to understand how to paint that!

That's one of the kind of things i would like to create.



I know one guy discovered how to have one colour for see and one for rivers. If i create this lake as a shallow water it could be possible to have this kind of colours maybe

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- agracier - 11.03.2010

I think almost every map I've posted so far has water at higher altitudes than 0m. And I've made lakes at considerable altitudes .

You may have to adjust the settings when/if you work on the original grey/color files in Microdem. To get water at altitudes, you need to 'uncheck' the sea level and lake check options. Otherwise it seems that all water is pushed to 0m. Which then results in lakes that would have been at say 200m altitude, being set at 0m, which gives very steep sides to the lakes ...

The thing with lakes at altitude though, is that you cannot ake them with Microem. They have to be imported somehow or another into your grey value map. You can do this by hand - sometimes the lakes are visible as same colored RGB grey values. Then you click them with a magic wand tool at 0 tolerance, and create a separate grey map that you later convert to my_mapC.tga.

You do that with all water and river systems, creating them by hand by carefully following river beds or lakes in the grey Microdem map.

Sometimes you can also import a lake or water body layer from a Google map layers site

http://www.maps-for-free.com/

but then you have to downsize/upsize the imported layers to a pixel perfect match. Works well for small amounts of lakes/rivers, but with intricate systems you're better off doing it all by hand, even if it does take a day or two of full hours to get some of these areas done. The Hankow, Madagascar, Mozambique maps for instance were real doozies in the rivers department. They never seemed to end.

That's also why it's fun to make desert maps ... ha ha

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- agracier - 11.03.2010

redko Wrote:mmmm I know one guy discovered how to have one colour for see and one for rivers.

Really? I would love to know how to do that .... anyone know how?

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