I Spy with My Little Eye...

[WasabiThumbs]

Want to know how to get the position of an entity inside of a...
render.RenderView( {
origin = orig,
angles = Angle( -90, 0, 0 ),
x = x,
y = y,
w = w,
h = h
} )
'Nuff said.
Also, just clarifying, the angle supplied should be looking "downwards" (relative to a zero angle) because the pitch is at -90, downwards a right angle, correct?
Orig is also at a fixed point in the map, high above ground.

[-Raven-]

Found this after a quick google search.

[WasabiThumbs]

You will always be remembered as my hero.
For reference, here's the answer after put through the garbage filter
<Imagine a whirling machine that resembles a gold panning thing but for forum posts>
function camToScreen( cPos, cAng, cFov, scrW, scrH, vDir )
local vDir = cPos - vDir

local d = 4 * scrH / ( 6 * math.tan( 0.5 * cFov ) )
local fdp = cAng:Forward():Dot( vDir )

if ( fdp == 0 ) then
return 0, 0, false, false
end

local vProj = ( d / fdp ) * vDir

local x = 0.5 * scrW + cAng:Right():Dot( vProj )
local y = 0.5 * scrH - cAng:Up():Dot( vProj )

return x, y, ( 0 < x && x < scrW && 0 < y && y < scrH ) && fdp < 0, fdp > 0
end