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FSX Calibrating SBuilderX screen captures for Gmax

Clutch Cargo

Clutch Cargo

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Couldn't find anything regarding this subject so let me ask here - when adding a background map do the Zoom levels equal a certain meters per pixel ratio, for example does Zoom 19 = 30cm/pp?

Trying to find an easy way to determine pixel size for calibration when using these captures over to Gmax as 1024x1024 airport ground polys.

Thx,

Clutch
 
Hi Clutch.

Luis Sa could best answer this. But for now, the short answer is don't use these images in Gmax.

First, you can't legally redistribute them, so the images can only be for your own use.

Secondly, the projection used in these maps is geographic in nature. Distances are measured in latitude and longitude... not in meters or feet. You would have to reproject the images to ( perhaps ) UTM to get images that are not distorted. There are graphic programs that can rubber-sheet ( manually stretch ) these types of images, as well as some that can reproject.

You can Google for info about map tile scales, and projections used, but be prepared for complex and even misleading answers.

_____

Thinking on this... why not just resize/cut the textures into 1024x1024 sizes? Gmax will let you map the textures which takes care of any stretching, and you don't need to know the distance-size of the images.

Dick
 
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thx rhumbaflappy,

for the feedback. These are being used just as background guidelines for my airport. Not planning to distribute them. Also, I have not detected any distortion when using them?

Maybe I am over-thinking this? I think I did what you suggested. Made some screen captures. Sliced them up into 1024x1024 segments. Started creating 1024x1024 polys in Gmax. I'll throw some of those textures on 'em to see if that works.

I'll see if Luis Sa jumps in with an answer if those Zoom levels represent standard per pixel definitions. I figured I will need to know (maybe down the road) what scale of back ground maps I am working at.

Clutch
 
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