public function calculate(N\LatLong $point1, N\LatLong $point2)
{
$celestialBody = $this->getCelestialBody();
$d = acos(sin($point1->getLatitude()->get()) * sin($point2->getLatitude()->get()) + cos($point1->getLatitude()->get()) * cos($point2->getLatitude()->get()) * cos($point2->getLongitude()->get() - $point1->getLongitude()->get())) * $celestialBody->volumetricMeanRadius;
return $d * 1000;
} /**
* @dataProvider cosineLawDataProvider
*/
public function testCosineLawCalculate($lat1, $long1, $lat2, $long2, $expected_result)
{
$CosineLaw = new C\CosineLaw($this->getObject());
$point1 = new N\LatLong(new N\Coordinate($lat1), new N\Coordinate($long1));
$point2 = new N\LatLong(new N\Coordinate($lat2), new N\Coordinate($long2));
$metres = $CosineLaw->calculate($point1, $point2);
$this->assertEquals($expected_result, $metres, '', 0.2);
}