239 lines
6.8 KiB
PHP
239 lines
6.8 KiB
PHP
<?php
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/**
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* PHP Shapefile - PHP library to read and write ESRI Shapefiles, compatible with WKT and GeoJSON
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*
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* @package Shapefile
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* @author Gaspare Sganga
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* @version 4.0.0dev
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* @license MIT
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* @link https://gasparesganga.com/labs/php-shapefile/
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*/
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namespace Shapefile\Geometry;
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use Shapefile\Shapefile;
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use Shapefile\ShapefileException;
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/**
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* MultiLinestring Geometry.
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*
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* - Array: [
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* [numparts] => int
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* [parts] => [
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* [
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* [numpoints] => int
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* [points] => [
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* [
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* [x] => float
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* [y] => float
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* [z] => float
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* [m] => float/bool
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* ]
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* ]
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* ]
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* ]
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* ]
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*
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* - WKT:
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* MULTILINESTRING [Z][M] ((x y z m, x y z m, x y z m), (x y z m, x y z m))
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*
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* - GeoJSON:
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* {
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* "type": "MultiLineString" / "MultiLineStringM"
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* "coordinates": [
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* [
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* [x, y, z] / [x, y, m] / [x, y, z, m]
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* ]
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* ]
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* }
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*/
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class MultiLinestring extends GeometryCollection
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{
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/**
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* WKT and GeoJSON basetypes, collection class type
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*/
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const WKT_BASETYPE = 'MULTILINESTRING';
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const GEOJSON_BASETYPE = 'MultiLineString';
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const COLLECTION_CLASS = 'Linestring';
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/////////////////////////////// PUBLIC ///////////////////////////////
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public function initFromArray($array)
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{
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$this->checkInit();
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if (!isset($array['parts']) || !is_array($array['parts'])) {
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throw new ShapefileException(Shapefile::ERR_INPUT_ARRAY_NOT_VALID);
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}
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foreach ($array['parts'] as $part) {
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if (!isset($part['points']) || !is_array($part['points'])) {
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throw new ShapefileException(Shapefile::ERR_INPUT_ARRAY_NOT_VALID);
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}
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$Linestring = new Linestring();
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foreach ($part['points'] as $coordinates) {
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$Point = new Point();
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$Point->initFromArray($coordinates);
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$Linestring->addPoint($Point);
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}
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$this->addLinestring($Linestring);
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}
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return $this;
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}
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public function initFromWKT($wkt)
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{
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$this->checkInit();
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$wkt = $this->wktSanitize($wkt);
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if (!$this->wktIsEmpty($wkt)) {
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$force_z = $this->wktIsZ($wkt);
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$force_m = $this->wktIsM($wkt);
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foreach (explode('),(', substr($this->wktExtractData($wkt), 1, -1)) as $part) {
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$Linestring = new Linestring();
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foreach (explode(',', $part) as $wkt_coordinates) {
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$coordinates = $this->wktParseCoordinates($wkt_coordinates, $force_z, $force_m);
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$Point = new Point($coordinates['x'], $coordinates['y'], $coordinates['z'], $coordinates['m']);
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$Linestring->addPoint($Point);
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}
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$this->addLinestring($Linestring);
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}
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}
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return $this;
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}
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public function initFromGeoJSON($geojson)
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{
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$this->checkInit();
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$geojson = $this->geojsonSanitize($geojson);
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if ($geojson !== null) {
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foreach ($geojson['coordinates'] as $part) {
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if (!is_array($part)) {
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throw new ShapefileException(Shapefile::ERR_INPUT_GEOJSON_NOT_VALID, 'Wrong coordinates format');
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}
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$Linestring = new Linestring();
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foreach ($part as $geojson_coordinates) {
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$coordinates = $this->geojsonParseCoordinates($geojson_coordinates, $geojson['flag_m']);
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$Point = new Point($coordinates['x'], $coordinates['y'], $coordinates['z'], $coordinates['m']);
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$Linestring->addPoint($Point);
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}
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$this->addLinestring($Linestring);
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}
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}
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return $this;
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}
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public function getArray()
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{
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$parts = [];
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foreach ($this->getLinestrings() as $Linestring) {
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$parts[] = $Linestring->getArray();
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}
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return [
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'numparts' => $this->getNumGeometries(),
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'parts' => $parts,
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];
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}
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public function getWKT()
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{
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$ret = $this->wktInitializeOutput();
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if (!$this->isEmpty()) {
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$parts = [];
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foreach ($this->getLinestrings() as $Linestring) {
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$points = [];
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foreach ($Linestring->getPoints() as $Point) {
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$points[] = implode(' ', $Point->getRawArray());
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}
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$parts[] = '(' . implode(', ', $points) . ')';
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}
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$ret .= '(' . implode(', ', $parts) . ')';
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}
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return $ret;
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}
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public function getGeoJSON($flag_bbox = true, $flag_feature = false)
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{
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if ($this->isEmpty()) {
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return 'null';
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}
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$coordinates = [];
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foreach ($this->getLinestrings() as $Linestring) {
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$parts = [];
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foreach ($Linestring->getPoints() as $Point) {
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$parts[] = $Point->getRawArray();
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}
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$coordinates[] = $parts;
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}
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return $this->geojsonPackOutput($coordinates, $flag_bbox, $flag_feature);
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}
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/**
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* Adds a linestring to the collection.
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*
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* @param \Shapefile\Geometry\Linestring $Linestring
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*
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* @return self Returns $this to provide a fluent interface.
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*/
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public function addLinestring(Linestring $Linestring)
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{
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$this->addGeometry($Linestring);
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return $this;
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}
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/**
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* Gets a linestring at specified index from the collection.
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*
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* @param int $index The index of the linestring.
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*
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* @return \Shapefile\Geometry\Linestring
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*/
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public function getLinestring($index)
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{
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return $this->getGeometry($index);
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}
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/**
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* Gets all the linestrings in the collection.
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*
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* @return \Shapefile\Geometry\Linestring[]
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*/
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public function getLinestrings()
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{
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return $this->getGeometries();
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}
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/**
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* Gets the number of linestrings in the collection.
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*
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* @return int
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*/
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public function getNumLinestrings()
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{
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return $this->getNumGeometries();
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}
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public function getSHPBasetype()
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{
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return Shapefile::SHAPE_TYPE_POLYLINE;
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}
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/////////////////////////////// PROTECTED ///////////////////////////////
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protected function getWKTBasetype()
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{
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return static::WKT_BASETYPE;
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}
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protected function getGeoJSONBasetype()
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{
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return static::GEOJSON_BASETYPE;
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}
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protected function getCollectionClass()
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{
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return __NAMESPACE__ . '\\' . static::COLLECTION_CLASS;
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}
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}
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