lukewilkins

### Keybase proof

I hereby claim:

  * I am lukewilkins on github.
  * I am lukewilkins (https://keybase.io/lukewilkins) on keybase.
  * I have a public key whose fingerprint is D485 640F 3D6B 35DE 17DF  9FA4 DDC3 2819 37F3 7CF2

To claim this, I am signing this object:

lukewilkins

git config pack.threads 1
git config pack.deltaCacheSize 1
git config core.packedGitWindowSize 16m
git config core.packedGitLimit 128m
git config pack.windowMemory 512m

lukewilkins

public static function geo_events($d = 25, $location = null)
{
  if (is_null($location)) $location = Locate::get();

  $r = 3959;

  $lat_n = rad2deg(asin(sin(deg2rad($location['lat'])) * cos($d / $r) + cos(deg2rad($location['lat'])) * sin($d / $r) * cos(deg2rad(0))));
  $lat_s = rad2deg(asin(sin(deg2rad($location['lat'])) * cos($d / $r) + cos(deg2rad($location['lat'])) * sin($d / $r) * cos(deg2rad(180))));
  $lng_e = rad2deg(deg2rad($location['lng']) + atan2(sin(deg2rad(90)) * sin($d / $r) * cos(deg2rad($location['lat'])), cos($d / $r) - sin(deg2rad($location['lat'])) * sin(deg2rad($lat_n))));
  $lng_w = rad2deg(deg2rad($location['lng']) + atan2(sin(deg2rad(270)) * sin($d / $r) * cos(deg2rad($location['lat'])), cos($d / $r) - sin(deg2rad($location['lat'])) * sin(deg2rad($lat_n))));