/**
* Class constructor.
*
* A LineString must be composed of 2 points or more, or 0 points for an empty LineString.
* A LineString with exactly 1 point is not allowed.
*
* The coordinate system of each of the points must match the one of the LineString.
*
* @param CoordinateSystem $cs The coordinate system of the LineString.
* @param Point ...$points The points that compose the LineString.
*
* @throws InvalidGeometryException If only one point was given.
* @throws CoordinateSystemException If different coordinate systems are used.
*/
public function __construct(CoordinateSystem $cs, Point ...$points)
{
parent::__construct($cs, !$points);
if (!$points) {
return;
}
CoordinateSystem::check($this, ...$points);
if (count($points) < 2) {
throw new InvalidGeometryException('A LineString must be composed of at least 2 points.');
}
$this->points = $points;
}
/**
* @param CoordinateSystem $cs
* @param Point ...$points
*
* @return CircularString
*
* @throws InvalidGeometryException If the number of points is invalid.
* @throws CoordinateSystemException If different coordinate systems are used.
*/
public function __construct(CoordinateSystem $cs, Point ...$points)
{
parent::__construct($cs, !$points);
if (!$points) {
return;
}
CoordinateSystem::check($this, ...$points);
$numPoints = count($points);
if ($numPoints < 3) {
throw new InvalidGeometryException('A CircularString must be made of at least 3 points.');
}
if ($numPoints % 2 === 0) {
throw new InvalidGeometryException('A CircularString must have an odd number of points.');
}
$this->points = $points;
}
/**
* Class constructor.
*
* The coordinate system of each of the curves must match the one of the CompoundCurve.
*
* @param CoordinateSystem $cs The coordinate system of the CompoundCurve.
* @param Curve ...$curves The curves that compose the CompoundCurve.
*
* @throws EmptyGeometryException If any of the input curves is empty.
* @throws InvalidGeometryException If the compound curve is not continuous.
* @throws CoordinateSystemException If different coordinate systems are used.
*/
public function __construct(CoordinateSystem $cs, Curve ...$curves)
{
parent::__construct($cs, !$curves);
if (!$curves) {
return;
}
CoordinateSystem::check($this, ...$curves);
/** @var Curve|null $previousCurve */
$previousCurve = null;
foreach ($curves as $curve) {
if ($previousCurve) {
$endPoint = $previousCurve->endPoint();
$startPoint = $curve->startPoint();
if ($endPoint != $startPoint) {
// on purpose by-value comparison!
throw new InvalidGeometryException('Incontinuous compound curve.');
}
}
$previousCurve = $curve;
}
$this->curves = $curves;
}
