/**
* {@inheritdoc}
*/
protected function readGeometryHeader(WKBBuffer $buffer, &$geometryType, &$hasZ, &$hasM, &$srid)
{
$wkbType = $buffer->readUnsignedLong();
$geometryType = $wkbType % 1000;
$dimension = ($wkbType - $geometryType) / 1000;
if ($dimension < 0 || $dimension > 3) {
throw GeometryIOException::unsupportedWKBType($wkbType);
}
$hasZ = $dimension === 1 || $dimension === 3;
$hasM = $dimension === 2 || $dimension === 3;
}
/**
* {@inheritdoc}
*/
protected function readGeometryHeader(WKBBuffer $buffer, &$geometryType, &$hasZ, &$hasM, &$srid)
{
$header = $buffer->readUnsignedLong();
if ($header >= 0 && $header < 4000) {
$geometryType = $header % 1000;
$dimension = ($header - $geometryType) / 1000;
if ($dimension < 0 || $dimension > 3) {
throw GeometryIOException::unsupportedWKBType($header);
}
$hasZ = $dimension === 1 || $dimension === 3;
$hasM = $dimension === 2 || $dimension === 3;
} else {
$geometryType = $header & 0xfff;
$hasZ = ($header & EWKBTools::Z) !== 0;
$hasM = ($header & EWKBTools::M) !== 0;
$hasSRID = ($header & EWKBTools::S) !== 0;
if ($hasSRID) {
$srid = $buffer->readUnsignedLong();
}
}
}
