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Using PhotoReal option

Em00119

Em00119

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us-washington
I have downloaded and read many tutorials on SBX and completely understand how to add photoreal. My question is....I would like to specify a certain area only for the photoreal texture. I can only seem to draw a rectangle. My goal is the have the photoreal texture only to reflect within the airport boundry. Is this possible and if so how?

Thanks
Eric
 
I have never done it with sbx but to make a none square image you need to make a mask in the image that can then have a null value associated with it.

Like black 0,0,0,
or white 255,255,255

The parts of the image you want to keep you need to make sure they do not have any values in the range that you are nulling.

I usually use black so I make sure there are no 0 values in the imagery that I am keeping.

Hope this helps not sure how this relates to the sbx process.
 
Hi Eric.

Your photoreal area will be a rectangle, oriented NSEW.

But, you can use a blendmask ( either an alphachannel or a TIFF greyscale image ) and that will mask off the areas of the rectangle you do not wish to use.

So any shape with holes can be defined by the blendmask.

You can also use the NullValue directive to make a color transparent. The SDK example uses a NullValue = 255,255,255 which is white, but you could just as easily use 0,0,0 which is black... and all pure black pixels would be transparent.

Dick
 
Ok..thanks, so its not possible to draw the shape you want to insert the photoreal. I will look into the methods described then.
 
Hi,

In SBuilder you can add extra points:

Thanks a lot Jon,

I tried your suggestion and it comes to this:

Load the project.
Press the Poly button to go in poly mode
Press the Insert key (Keyboard)
Put the mouse pointer on poly line and click away. The more you click the more points are inserted.
Leave poly mode when done.

Thanks again.
Click to expand...

Can this be applied for what you are entended to do ?


Greetz. José.
 
Thanks again everyone. I did what I wanted to do and this is how I made it possible. I took the bmp file that was compiled using the photoreal scenery and opened it with Adobe Photoshop, Immediately saved it as a tiff and renamed it with the same bmp name but added the _B according to other threads I read about. I did not crop anything, but instead, used the eraser function and erased everthing but the areas I wanted to keep. I then recompliled it and it shows up perfect. Wow..this is really a cool feature to bring airport scenery to life
 
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