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FSXA Cutting photorreal

T

Tejal Bernardo

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spain
Hi all, I want to cut a geotiff, this is a city and I just want the city contour, this is in the coastline, so I have to cut the coastline too, well, the problem is I know the black alpha is for water and white for land, but, how I get rid of the photorreal I don't want to appear in the scenery, that part eventually is flooded by the water, according whith the alpha channel method. I'll atach a picture wich could explain better than this poor english.:(
 

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Well, if you are still using FSX KML simply fire up Google Earth, draw your city contour, export that as KML and import it into FSX KML.
 
yes, but I am talking about photorreal textures :(, this thing must be done in photoshop, with the alpha channels thing, anyway I think I solved this issue, and sometimes I understand that my question left unanswered, my english is terrible :D
Edit: yes, I think that fsxkml could help too, with exlude water polygon, could be . Thanks anyway
 
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The thing is that I know you can use a photoreal TILE, a square area and not a random shape polygon. They only way to work around that is if your area of interest is an island and you want to cut out the water using a blend mask.

However, you want to do it in land so I have no idea :/
 
Hi,

Take your blend mask and blacken the area you do not wish to use. The default landclass will show up in your scenery in the blackened areas.
(Do the same with your photoreal texture afterwards to keep your file size down.)
 
Make the blend mask as a tiff with white where you wish to see the photo textures and black where you wish to see the default textures. Feather the edges from white to black so that there isn't a definite demarcation.



Here is one I made earlier

 
Thanks for the replies, yes, the process was known more or less for me, the black and white thing, but there is a side effect when you make this, the terrain is flooden by water, the terrain of the photorreal tile which you want that desappear and left the default terrain only is replaced by water,so you will have a city sorrounded by water. have you not seen this effect ?, maybe there something I've doing wrong in the process. Anyway I think I have solved the issue, making two source from the same tiff, and adding two alphachannel to the first and only one tu the second, though the outcome not have convinced me, some side effect almost unnoticeabel but could be better, regards
 
As per the other thread on this.

In those coastal areas where a blend mask produces a "water" effect, you simply need to use and LandWaterMask as well as a Blend Mask. See the SDK for details.

The process is pretty simple, and results in not only acceptable results, but results with absolutely no problems whatsoever.
 
You make the land-water mask with a sharp cut-off at the coastline with the sea black and the land white.
 
Thanks, I think it's a important issue, because always there are little things to correct or retouch in photorreal sceneries , ( and sorry for destroy the english language)
 
Golf-HotelDelta said:
Make the blend mask as a tiff with white where you wish to see the photo textures and black where you wish to see the default textures. Feather the edges from white to black so that there isn't a definite demarcation.



Here is one I made earlier

Click to expand...

Hi George. I am trying to figure out how to do these greyscale blend masks. Could you tell me what sort of tools you used and roughly how you did this image. It looks great, but I really have no idea of how to go about doing something like this. Thanks.
Scott
 
sharmes6 said:
Hi George. I am trying to figure out how to do these greyscale blend masks. Could you tell me what sort of tools you used and roughly how you did this image. It looks great, but I really have no idea of how to go about doing something like this. Thanks.
Scott
Click to expand...

The above pic was a bit special in that the photo included the sand banks. In that case all I did was to convert the pic to greyscale and paint in the inner land and outer sea as white/black.

Normally, I would paint the land and sea as white/black then with the magic wand, select the white then use "Selections/Modify/Feather" to expand the selection and fill.

BTW. I use PSP.
 
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