On Apr 6, 1:18 am, The Net Duck <[email protected]> wrote:
> Wow thanks Bratillf, did you come up with that? That's really amazing.
> You mentioned pixels, in this equation are the X and Y's still just
> lat and lng coords?
I started with a formula for the area of a triangle:
http://www.softsurfer.com/Archive/algorithm_0101/algorithm_0101.htm
I tweaked it to insure the rounding errors were consistent in each
direction to insure a tight fit between polys sharing a common
boundary. The X & Y values are pixels which are integers rather than
Lat/Lon coordinaters which are floating point numbers. At the
equator, a degree of latitude is equivalent to a degree of longitude.
Everywhere else, the two are not equivalent.
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