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Author Topic: Maps with 1 pixel=25 m  (Read 434 times)

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agracier

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Maps with 1 pixel=25 m
« on: September 11, 2019, 12:05:08 PM »

Map building manuals give a Microdem modification setting of 1 pixel should equal 50m. That is apparently the ratio/size that was meant to be used in Il-2 as standard. However I sometimes fudged a bit for big maps and used 1 pixel=55 or 60m. The results were just as good as the standard, though mountains did tend to look a bit too fluffy or like whipped cream on a cake.

I decided to go the opposite way and see what would happen if 1 pixel were set to 25m. Would it give a marked difference? Would it give a sort of 'hi-resolution'  map? I made a few maps of hilly terrain: Spain in the upper Murcia region, Oman and part of the Red Sea with lower Gulf of Aqaba. All are fairly hilly.

Making a basic map with just 1 (or 2) texture is not a big chore compared to actually finishing a map. So here are three basic try-out maps with terrain set at 1 pixel (Microdem)=25 meter.

I wanted to share the results to see if other members agreed. It seems that mountains and hilly region do indeed look markedly better and as an added unexpected bonus, textures seem to tile to a far lesser degree, meaning you can use 1 single texture over a large area without any visible tiling appearing. This would be a big advantage for map making.

But of course there are probably downsides to this approach. I suppose distances not longer accord with Il-2 standards and hence fuel consumption? Will this affect gunnery accuracy? Or mini-map rendering? I have no idea yet and even less of a way of checking or even to know if it important.

That is why I thought to put these 3 very provisional and basic maps here so others could test them out should they wish. They have no populating done on them, just a static file taken from other maps to allow for mission saving. And they all use 1 single texture throughout the map - except the Oman_25 map which has a few areas with extra textures, just to see how it looked. And don't be surprised when you see that the edmaps are the Microdem bmp height maps. This to save time.

Here are the links:
Spain-Murcia
http://www.mediafire.com/file/rju1u0t8moyjpke/ag_Spain_Murcia.zip/file

Red Sea
http://www.mediafire.com/file/lfktv0ejd512asu/ag_Red_Sea.zip/file

Oman
http://www.mediafire.com/file/0jvu4lj9bbgf5jn/ag_Oman_25.rar/file


Here a few screenshots from the Oman map.







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Uzin

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Re: Maps with 1 pixel=25 m
« Reply #1 on: September 12, 2019, 09:19:55 AM »

Interesting.
Two questions:
What about the size of buildings,
and how do you deal with rivers not at zero height?
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agracier

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Re: Maps with 1 pixel=25 m
« Reply #2 on: September 12, 2019, 09:28:28 AM »

Interesting.
Two questions:
What about the size of buildings,
and how do you deal with rivers not at zero height?

There are objects in the maps, those from the statics I used as temporary statics. Of course they are not placed in any logical or real place, but every now and then you can come across them when flying around. I've yet to really place objects on a village texture for instance, so I have no idea how they will look in proportion to the texture. If they give a problem looking too small, it is always possible to make the texture larger or look for a more suitable village texture. After all, I get my textures from Google Earth and one can zoom in or out to whatever degree necessary.

As for rivers, I haven't tried yet. My easiest solution is to make desert maps with no rivers ... ha ha. Or, depending on the terrain, one can also keep all rivers at 0 RGB. It usually doesn't show that much in height difference with surrounding terrain, and if it does, you can make a broad river valley, gently sloping so it won't be noticeable.

For myself, I've never tried making a river by gradient, sloping gently towards the sea. I will have to try it sometime.
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agracier

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Re: Maps with 1 pixel=25 m
« Reply #3 on: September 12, 2019, 06:06:59 PM »

A few more screenshots from a 1 pix=25 meter map, this one textured with a dozen or so textures. It is of a cluster of Scottish Isles. THis to give an idea of how nicely the textures blend into oneanother ...























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fatty_finn

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Re: Maps with 1 pixel=25 m
« Reply #4 on: September 23, 2019, 07:00:40 AM »

Hi Agracier
I've just seen this post, following your comment over on the Lord Howe Island Map thread.
 I did think of trying 25m/pixel when I was making that map, as it would have helped [?] overcome the topographic problems you rightly mentioned there. However, I feared it would also make that little Island seem twice as big ! -so didnt risk it.

Still, this may be a great idea, so I will certainly be trying the new maps you've provided here.
and the screenshots look beautiful!
f_f
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agracier

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Re: Maps with 1 pixel=25 m
« Reply #5 on: September 23, 2019, 08:17:19 AM »

Actually, I didn't realize that Lord Howe island actually looks like it should feature in a King Kong remake ... I didn't know that such terrain really exists ... ha ha.

So, all in all, your map is pretty accurate. There was no need to try and even out some of the terrain features.

____________________________

That said, I really haven't encountered anything untoward in a 25m=1 pixel map except that when there is a lot of coastline or islands, the coasts tend to come out very blocky and unless smoothed out in the My_mapc, give huge unrealistic squares, straight lines or triangles for coasts. They need to be retouched with a 1 pixel large brush to give more realistic looking coastlines or lakes.

But other than that, I haven't found any downsides yet and some good upsides concerning how (mountainous) terrain looks.
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