/**
* {@inheritdoc}
*/
public function coordinateSystem()
{
if ($this->proxyGeometry === null) {
$this->load();
}
return $this->proxyGeometry->coordinateSystem();
}
/**
* @param Geometry $geometry The geometry to export as WKT.
*
* @return string The WKT representation of the given geometry.
*
* @throws GeometryIOException If the given geometry cannot be exported as WKT.
*/
protected function doWrite(Geometry $geometry)
{
$type = strtoupper($geometry->geometryType());
$cs = $geometry->coordinateSystem();
$hasZ = $cs->hasZ();
$hasM = $cs->hasM();
$dimensionality = '';
if ($hasZ || $hasM) {
$dimensionality .= ' ';
if ($hasZ) {
$dimensionality .= 'Z';
}
if ($hasM) {
$dimensionality .= 'M';
}
}
if ($geometry instanceof GeometryCollection) {
$isEmpty = $geometry->numGeometries() === 0;
} else {
$isEmpty = $geometry->isEmpty();
}
if ($isEmpty) {
return $type . $dimensionality . ' EMPTY';
}
if ($geometry instanceof Point) {
$data = $this->writePoint($geometry);
} elseif ($geometry instanceof LineString) {
$data = $this->writeLineString($geometry);
} elseif ($geometry instanceof CircularString) {
$data = $this->writeCircularString($geometry);
} elseif ($geometry instanceof CompoundCurve) {
$data = $this->writeCompoundCurve($geometry);
} elseif ($geometry instanceof Triangle) {
$data = $this->writePolygon($geometry);
} elseif ($geometry instanceof Polygon) {
$data = $this->writePolygon($geometry);
} elseif ($geometry instanceof CurvePolygon) {
$data = $this->writeCurvePolygon($geometry);
} elseif ($geometry instanceof MultiPoint) {
$data = $this->writeMultiPoint($geometry);
} elseif ($geometry instanceof MultiLineString) {
$data = $this->writeMultiLineString($geometry);
} elseif ($geometry instanceof MultiPolygon) {
$data = $this->writeMultiPolygon($geometry);
} elseif ($geometry instanceof GeometryCollection) {
$data = $this->writeGeometryCollection($geometry);
} elseif ($geometry instanceof TIN) {
$data = $this->writePolyhedralSurface($geometry);
} elseif ($geometry instanceof PolyhedralSurface) {
$data = $this->writePolyhedralSurface($geometry);
} else {
throw GeometryIOException::unsupportedGeometryType($geometry->geometryType());
}
return $type . $dimensionality . $this->prettyPrintSpace . '(' . $data . ')';
}
/**
* {@inheritdoc}
*/
protected function packHeader(Geometry $geometry, $outer)
{
$geometryType = $geometry->geometryTypeBinary();
$cs = $geometry->coordinateSystem();
if ($cs->hasZ()) {
$geometryType += 1000;
}
if ($cs->hasM()) {
$geometryType += 2000;
}
return $this->packUnsignedInteger($geometryType);
}
/**
* {@inheritdoc}
*/
protected function packHeader(Geometry $geometry, $outer)
{
$geometryType = $geometry->geometryTypeBinary();
$cs = $geometry->coordinateSystem();
if ($cs->hasZ()) {
$geometryType |= EWKBTools::Z;
}
if ($cs->hasM()) {
$geometryType |= EWKBTools::M;
}
$srid = $cs->SRID();
if ($srid !== 0 && $outer) {
$geometryType |= EWKBTools::S;
}
$header = $this->packUnsignedInteger($geometryType);
if ($srid !== 0 && $outer) {
$header .= $this->packUnsignedInteger($srid);
}
return $header;
}
/**
* Creates a non-empty GeometryCollection composed of the given geometries.
*
* @param Geometry $geometry1 The first geometry.
* @param Geometry ...$geometryN The subsequent geometries, if any.
*
* @return static
*
* @throws CoordinateSystemException If the geometries use different coordinate systems.
* @throws UnexpectedGeometryException If a geometry is not a valid type for a sub-class of GeometryCollection.
*/
public static function of(Geometry $geometry1, Geometry ...$geometryN)
{
return new static($geometry1->coordinateSystem(), $geometry1, ...$geometryN);
}
/**
* @param Geometry $reference
* @param Geometry $culprit
*
* @return CoordinateSystemException
*/
public static function dimensionalityMix(Geometry $reference, Geometry $culprit)
{
return new CoordinateSystemException(sprintf('Dimensionality mix: %s %s cannot contain %s %s.', $reference->geometryType(), $reference->coordinateSystem()->coordinateName(), $culprit->geometryType(), $culprit->coordinateSystem()->coordinateName()));
}
/**
* @param Geometry $reference The geometry holding the reference coordinate system.
* @param Geometry ...$geometries The geometries to check against this coordinate system.
*
* @return void
*
* @throws CoordinateSystemException If the coordinate systems differ.
*/
public static function check(Geometry $reference, Geometry ...$geometries)
{
$referenceCS = $reference->coordinateSystem();
foreach ($geometries as $geometry) {
$geometryCS = $geometry->coordinateSystem();
if ($geometryCS == $referenceCS) {
// by-value comparison.
continue;
}
if ($geometryCS->srid !== $referenceCS->srid) {
throw CoordinateSystemException::sridMix($reference, $geometry);
}
throw CoordinateSystemException::dimensionalityMix($reference, $geometry);
}
}
