/**
* {@inheritdoc}
*/
public function __construct(CoordinateSystem $cs, LineString ...$rings)
{
parent::__construct($cs, ...$rings);
if ($this->isEmpty) {
return;
}
if ($this->exteriorRing()->numPoints() !== 4) {
throw new InvalidGeometryException('A triangle must have exactly 4 (3 + 1) points.');
}
if ($this->numInteriorRings() !== 0) {
throw new InvalidGeometryException('A triangle must not have interior rings.');
}
}
