/**
* testCalculateDestinationForBearingAndDistanceReturnsExpectedValue
*
* @param LatLong $latLong The starting point.
* @param float $bearing The initial bearing.
* @param float $distance The distance in metres to travel.
* @param LatLong $expected The expected destination.
*
* @dataProvider getLatLongWithInitialBearingDistanceAndDestination
*/
public function testCalculateDestinationForBearingAndDistanceReturnsExpectedValue(LatLong $latLong, $bearing, $distance, LatLong $expected)
{
$actual = $latLong->calculateDestinationForBearingAndDistance($bearing, $distance);
$tolerance = 0.3;
$this->assertEqualsWithinTolerance($expected->getLatitude(), $actual->getLatitude(), $tolerance);
$this->assertEqualsWithinTolerance($expected->getLongitude(), $actual->getLongitude(), $tolerance);
$this->assertEquals($latLong->getHeight(), $actual->getHeight());
// Height remains constant.
$this->assertEquals($expected->getDatum(), $actual->getDatum());
}
/**
* Calculate the final bearing to follow from this point to arrive at the given destination.
*
* @param LatLong $destination The destination.
*
* @return float The bearing in decimal degrees.
*/
public function calculateFinalBearing(LatLong $destination)
{
$initialBearing = $destination->calculateInitialBearing($this);
return fmod($initialBearing + 180, 360);
}