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Quoted from Wabbeh

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Hello, it appears you haven’t understood that that question was about the 2:1 aspect ratio and not actually about the tool which blackens out the desktiop. bye.

Quoted from Wabbeh

O_O so how much relative FOV does this give you?

nice context you’ve given there, really helped

Quoted from choiie

chris: http://dl.dropbox.com/u/2447457/comparision.jpg

what the actual fuck, i tested this like 2 weeks ago…

valve, what have you done!

chojje TELL ME UR SECRET!

for a less inefficient way you may want to look into windows messages

Btw, (now that it’s out there anyway :P) jaeger put up a little formula to calculate your fov a long while ago… I’m such a mathematical dimwit that I can’t even get the proper answer out of it though xD (with wolfram alpha)

fov_desired changes horizontal fov but the game ensures constant vertical fov at different aspec ratios so first we determine our vertical fov at 4:3

verticalFov = 2 * atan( tan( 90/2 ) * 3/4 )
verticalFov =~ 73.74 degress

horizontalFov = 2 * atan( tan( verticalFov/2 ) * aspectRatio )
horizontalFov @ 5:4 =~ 86.3 degrees
horizontalFov @ 4:3 = 90 degrees
horizontalFov @ 16:10 =~ 100.39 degress
horizontalFov @ 16:9 =~ 106.26 degress

I’m glad I’m bad enough at TF2 to validate playing the game without having to take 5 math-courses first. :>

Quoted from skeej

Btw, (now that it’s out there anyway :P) jaeger put up a little formula to calculate your fov a long while ago… I’m such a mathematical dimwit that I can’t even get the proper answer out of it though xD (with wolfram alpha)

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/input/?i=2*atan%28tan%28PI%2F4%29*3%2F4%29*180%2FPI

edit
URL fell apart even though it is within URL-tags. GG rs-discuss