public function testConstructorSetsExpectedPropertyValues()
{
$x = 123.4;
$y = 456.7;
$z = 789.1;
$datum = $this->datumFactory->createDefault();
$instance = new CartesianCoordinate($x, $y, $z, $datum);
$this->assertEquals($x, $instance->getX());
$this->assertEquals($y, $instance->getY());
$this->assertEquals($z, $instance->getZ());
$this->assertEquals($datum, $instance->getDatum());
}
/**
* Perform the HelmertTransform on a CartesianCoordinate.
*
* @param CartesianCoordinate $coordinate The CartesianCoordinate to transform.
*
* @return CartesianCoordinate The transformed CartesianCoordinate.
*/
public function transform(CartesianCoordinate $coordinate)
{
$x = $coordinate->getX();
$y = $coordinate->getY();
$z = $coordinate->getZ();
$tx = $this->translationX;
$ty = $this->translationY;
$tz = $this->translationZ;
$rx = $this->getRotationXRadians();
$ry = $this->getRotationYRadians();
$rz = $this->getRotationZRadians();
// Normalise parts-per-million to (scaleFactor + 1).
$s1 = $this->scaleFactor / '1e6' + 1;
// Apply the transform.
$x2 = $tx + $x * $s1 - $y * $rz + $z * $ry;
$y2 = $ty + $x * $rz + $y * $s1 - $z * $rx;
$z2 = $tz - $x * $ry + $y * $rx + $z * $s1;
return new CartesianCoordinate($x2, $y2, $z2, clone $coordinate->getDatum());
}