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Pro Mission Map Image Parameters
http://jkpeterson.net/forum/viewtopic.php?f=6&t=2023		 Page 1 of 1
Author:  radical_d [ Sun Jan 02, 2011 15:44 pm ]
Post subject:  Pro Mission Map Image Parameters
This afternoon I re-figured out how the pro-mission map image is positioned in FA:

:oops: Looks like I gotta redo my fields:

0x0062 - X dimension of map image in feet (QWORD)
0x006A - Y dimension of map image in feet (QWORD)

If you set a waypoint's x position to the value at offset 0x0062 in the t2 map, you'll discover that it ends up at the very edge of the pro mission map image for that particular map.

I have yet to see if changing the map image dimensions affects the size of the t2 tiles themselves. Stay tuned...

Happy New Year! :mrgreen:

radical_D
Author:  CAG Hotshot [ Sun Jan 02, 2011 18:42 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
radical_d wrote:
This afternoon I re-figured out how the pro-mission map image is positioned in FA:

:oops: Looks like I gotta redo my fields:

0x0062 - X dimension of map image in feet (QWORD)
0x006A - Y dimension of map image in feet (QWORD)

If you set a waypoint's x position to the value at offset 0x0062 in the t2 map, you'll discover that it ends up at the very edge of the pro mission map image for that particular map.

I have yet to see if changing the map image dimensions affects the size of the t2 tiles themselves. Stay tuned...

Happy New Year! :mrgreen:

radical_D


I am very VERY interested in the tile size work as I was able to compress a 512 x 512 tile down to 256 x 512 which compressed the pixel size of the terrain (but in only one axis)... If I was able to compress the entire tile we would improve terrain detail by 4 times at least by decreasing the size of the pixels which are much to large in the current setup and make the terrain out of scale at low atltitude, which decreases the sense of speed of flight at low altitude...
Author:  radical_d [ Mon Jan 03, 2011 19:17 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
No such luck, CAG.

I measured the size of each tile by making a row of alternating colors and when I doubled the two map image dimensions the t2 tiles themselves did not change in size, neither did their corresponding MM tile.

But, despite this rather gray, disappointing report, there is a silver lining.

The T2 tiles are ~1.3nm on a side which handily enough is ~2.5km so two T2 tiles measures out to be 5km... Which means, making maps with 1km resolution height map data (SRTM30) is a very real, very doable prospect. In fact, that's what I'm working on right now.
Author:  CAG Hotshot [ Tue Jan 04, 2011 02:14 am ]
Post subject:  Re: Pro Mission Map Image Parameters
No I think you mis understood me...

I can increase the size of the tiles themselves quiite easily by making the tiles 512 x 512 to fill the void on the new larger 512K map (you are limited to a specific number of tiles on the map so you cant simply add more tiles)

But what I was referring to by tile size was to compress the larger 512 x 512 tiles into 256 x 256 by hex editing the tile header to fool the FA Engine into compressing them to fit...

I was successful with the X Axis, but have not yet found the Y axis in the tiles images to alter it to fit...
Author:  radical_d [ Tue Jan 04, 2011 14:17 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
Do you recall what you changed? I imagine that the Y-axis parameter would be somewhere near there.
Author:  CAG Hotshot [ Tue Jan 04, 2011 18:22 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
I still have the tile I altered in a TK project. I just relocated it recently...

Would you like to take a look at it?
Author:  radical_d [ Tue Jan 04, 2011 19:37 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
Sure thing, e-mail it to me and I'll have a look see. Could you also send me the original?
Author:  CAG Hotshot [ Tue Jan 04, 2011 21:24 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
radical_d wrote:
Sure thing, e-mail it to me and I'll have a look see. Could you also send me the original?


I dont know if I can or not... Its been a few years.
Author:  radical_d [ Tue Jan 04, 2011 23:11 pm ]
Post subject:  Re: Pro Mission Map Image Parameters
That's Ok, I can look at it anyway. :)
Author:  CAG Hotshot [ Wed Jan 05, 2011 02:30 am ]
Post subject:  Re: Pro Mission Map Image Parameters
Ok I will send it tonight...
Author:  CAG Hotshot [ Wed Jan 05, 2011 03:54 am ]
Post subject:  Re: Pro Mission Map Image Parameters
Well so far I have struck out... All I have found is corrupted files on the 512K Tiles...

However I did find screenshots of your 512k map!

Image
Image
Image
Image
Image
Image
Image
Image
Author:  CAG Hotshot [ Wed Jan 05, 2011 06:29 am ]
Post subject:  Re: Pro Mission Map Image Parameters
Well I tried all my drives and all my DVD and CDs and I dont have those files any longer... I do have some that you might be able to compare... (A all black 256 x 256 and a all black 512 by 512) that I think the 512 header may have been altered to match the 256 header but I am unsure...

I just found them and its 04:30 and I have crash! I will look at them tomorrow...
Author:  CAG Hotshot [ Wed Jan 05, 2011 07:53 am ]
Post subject:  Re: Pro Mission Map Image Parameters
Well like a nut I decided to test them out and to check the old files on the forums and I found out 2 things...

1. The hex edited tiles showed up in the map editor as compressed but in flight they were 256 x 512...

2. I did this testing back in 2004 and those files were all lost when the old system I had bit the bullet and died so the files I found are not the ones I tested, so I will have to create new ones and try it out and also email them to you. I will do this tomorrow...

This is a huge thing Rad... IT would improve the detail in the terrain 4 times over... So its worth the extra effort...
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