/**
* @covers Marando\AstroCoord\Equat::toHoriz
*/
public function testToHoriz()
{
$epoch = AstroDate::parse('2015-Nov-08 23:20:34.000')->toEpoch();
$ra = Angle::deg(180.58211)->toTime();
$dec = Angle::deg(1.00232);
$astr = new Equat(Frame::ICRF(), $epoch, $ra, $dec, Distance::m(0));
$astr->topo = Geo::deg(27.9494, -82.4569);
$horiz = $astr->toHoriz();
$prec = Angle::arcsec(9)->deg;
$this->assertEquals(-37.8887, $horiz->alt->deg, 'alt', $prec);
$this->assertEquals(295.834, $horiz->az->deg, 'az', $prec);
}
public function testSetDist()
{
$v = Velocity::ms(10);
$v->dist = Distance::m(4);
$this->assertEquals(4, $v->ms);
}
/**
* Calculates the distance traveled in the provided time at the velocity of
* this instance.
*
* @param Time $time
*
* @return Distance
*/
public function dist(Time $time)
{
return Distance::m($this->dist->m * $time->sec / $this->time->sec);
}
/**
* Returns a new distance with the negation of this instance.
*
* @return static
*/
public function neg()
{
return Distance::m(bcmul($this->m, -1), static::$s);
}
