436 lines
15 KiB
PHP
436 lines
15 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* PHP Shapefile - PHP library to read and write ESRI Shapefiles, compatible with WKT and GeoJSON
|
||
|
|
*
|
||
|
|
* @package Shapefile
|
||
|
|
* @author Gaspare Sganga
|
||
|
|
* @version 3.3.0
|
||
|
|
* @license MIT
|
||
|
|
* @link https://gasparesganga.com/labs/php-shapefile/
|
||
|
|
*/
|
||
|
|
|
||
|
|
namespace Shapefile\Geometry;
|
||
|
|
|
||
|
|
use Shapefile\Shapefile;
|
||
|
|
use Shapefile\ShapefileException;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* MultiPolygon Geometry.
|
||
|
|
*
|
||
|
|
* - Array: [
|
||
|
|
* [numparts] => int
|
||
|
|
* [parts] => [
|
||
|
|
* [
|
||
|
|
* [numrings] => int
|
||
|
|
* [rings] => [
|
||
|
|
* [
|
||
|
|
* [numpoints] => int
|
||
|
|
* [points] => [
|
||
|
|
* [
|
||
|
|
* [x] => float
|
||
|
|
* [y] => float
|
||
|
|
* [z] => float
|
||
|
|
* [m] => float/bool
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
*
|
||
|
|
* - WKT:
|
||
|
|
* MULTIPOLYGON [Z][M] (((x y z m, x y z m, x y z m, x y z m), (x y z m, x y z m, x y z m)), ((x y z m, x y z m, x y z m, x y z m), (x y z m, x y z m, x y z m)))
|
||
|
|
*
|
||
|
|
* - GeoJSON:
|
||
|
|
* {
|
||
|
|
* "type": "MultiPolygon" / "MultiPolygonM"
|
||
|
|
* "coordinates": [
|
||
|
|
* [
|
||
|
|
* [
|
||
|
|
* [x, y, z] / [x, y, m] / [x, y, z, m]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* ]
|
||
|
|
* }
|
||
|
|
*/
|
||
|
|
class MultiPolygon extends GeometryCollection
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* WKT and GeoJSON basetypes, collection class type
|
||
|
|
*/
|
||
|
|
const WKT_BASETYPE = 'MULTIPOLYGON';
|
||
|
|
const GEOJSON_BASETYPE = 'MultiPolygon';
|
||
|
|
const COLLECTION_CLASS = 'Polygon';
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @var int Action to perform on polygons rings.
|
||
|
|
*/
|
||
|
|
private $closed_rings;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @var int Orientation to force for polygons rings.
|
||
|
|
*/
|
||
|
|
private $force_orientation;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////// PUBLIC ///////////////////////////////
|
||
|
|
/**
|
||
|
|
* Constructor.
|
||
|
|
*
|
||
|
|
* @param \Shapefile\Geometry\Polygon[] $polygons Optional array of polygons to initialize the multipolygon.
|
||
|
|
* @param int $closed_rings Optional action to perform on polygons rings. Possible values:
|
||
|
|
* - Shapefile::ACTION_IGNORE
|
||
|
|
* - Shapefile::ACTION_CHECK
|
||
|
|
* - Shapefile::ACTION_FORCE
|
||
|
|
* @param int $force_orientation Optional orientation to force for polygons rings. Possible values:
|
||
|
|
* - Shapefile::ORIENTATION_CLOCKWISE
|
||
|
|
* - Shapefile::ORIENTATION_COUNTERCLOCKWISE
|
||
|
|
* - Shapefile::ORIENTATION_UNCHANGED
|
||
|
|
*/
|
||
|
|
public function __construct(array $polygons = null, $closed_rings = Shapefile::ACTION_CHECK, $force_orientation = Shapefile::ORIENTATION_COUNTERCLOCKWISE)
|
||
|
|
{
|
||
|
|
$this->closed_rings = $closed_rings;
|
||
|
|
$this->force_orientation = $force_orientation;
|
||
|
|
parent::__construct($polygons);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public function initFromArray($array)
|
||
|
|
{
|
||
|
|
$this->checkInit();
|
||
|
|
if (!isset($array['parts']) || !is_array($array['parts'])) {
|
||
|
|
throw new ShapefileException(Shapefile::ERR_INPUT_ARRAY_NOT_VALID);
|
||
|
|
}
|
||
|
|
foreach ($array['parts'] as $part) {
|
||
|
|
if (!isset($part['rings']) || !is_array($part['rings'])) {
|
||
|
|
throw new ShapefileException(Shapefile::ERR_INPUT_ARRAY_NOT_VALID);
|
||
|
|
}
|
||
|
|
$Polygon = new Polygon(null, $this->closed_rings, $this->force_orientation);
|
||
|
|
foreach ($part['rings'] as $part) {
|
||
|
|
if (!isset($part['points']) || !is_array($part['points'])) {
|
||
|
|
throw new ShapefileException(Shapefile::ERR_INPUT_ARRAY_NOT_VALID);
|
||
|
|
}
|
||
|
|
$Linestring = new Linestring();
|
||
|
|
foreach ($part['points'] as $coordinates) {
|
||
|
|
$Point = new Point();
|
||
|
|
$Point->initFromArray($coordinates);
|
||
|
|
$Linestring->addPoint($Point);
|
||
|
|
}
|
||
|
|
$Polygon->addLinestring($Linestring);
|
||
|
|
}
|
||
|
|
$this->addGeometry($Polygon, false);
|
||
|
|
}
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function initFromWKT($wkt)
|
||
|
|
{
|
||
|
|
$this->checkInit();
|
||
|
|
$wkt = $this->wktSanitize($wkt);
|
||
|
|
if (!$this->wktIsEmpty($wkt)) {
|
||
|
|
$force_z = $this->wktIsZ($wkt);
|
||
|
|
$force_m = $this->wktIsM($wkt);
|
||
|
|
foreach (explode(')),((', substr($this->wktExtractData($wkt), 2, -2)) as $part) {
|
||
|
|
$Polygon = new Polygon(null, $this->closed_rings, $this->force_orientation);
|
||
|
|
foreach (explode('),(', $part) as $ring) {
|
||
|
|
$Linestring = new Linestring();
|
||
|
|
foreach (explode(',', $ring) as $wkt_coordinates) {
|
||
|
|
$coordinates = $this->wktParseCoordinates($wkt_coordinates, $force_z, $force_m);
|
||
|
|
$Point = new Point($coordinates['x'], $coordinates['y'], $coordinates['z'], $coordinates['m']);
|
||
|
|
$Linestring->addPoint($Point);
|
||
|
|
}
|
||
|
|
$Polygon->addLinestring($Linestring);
|
||
|
|
}
|
||
|
|
$this->addGeometry($Polygon, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function initFromGeoJSON($geojson)
|
||
|
|
{
|
||
|
|
$this->checkInit();
|
||
|
|
$geojson = $this->geojsonSanitize($geojson);
|
||
|
|
if ($geojson !== null) {
|
||
|
|
$force_m = $this->geojsonIsM($geojson['type']);
|
||
|
|
foreach ($geojson['coordinates'] as $part) {
|
||
|
|
$Polygon = new Polygon(null, $this->closed_rings, $this->force_orientation);
|
||
|
|
foreach ($part as $ring) {
|
||
|
|
$Linestring = new Linestring();
|
||
|
|
foreach ($ring as $geojson_coordinates) {
|
||
|
|
$coordinates = $this->geojsonParseCoordinates($geojson_coordinates, $force_m);
|
||
|
|
$Point = new Point($coordinates['x'], $coordinates['y'], $coordinates['z'], $coordinates['m']);
|
||
|
|
$Linestring->addPoint($Point);
|
||
|
|
}
|
||
|
|
$Polygon->addLinestring($Linestring);
|
||
|
|
}
|
||
|
|
$this->addGeometry($Polygon, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public function getArray()
|
||
|
|
{
|
||
|
|
$parts = [];
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
$parts[] = $Polygon->getArray();
|
||
|
|
}
|
||
|
|
return [
|
||
|
|
'numparts' => $this->getNumGeometries(),
|
||
|
|
'parts' => $parts,
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
public function getWKT()
|
||
|
|
{
|
||
|
|
$ret = $this->wktInitializeOutput();
|
||
|
|
if (!$this->isEmpty()) {
|
||
|
|
$parts = [];
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
$rings = [];
|
||
|
|
foreach ($Polygon->getLinestrings() as $Linestring) {
|
||
|
|
$points = [];
|
||
|
|
foreach ($Linestring->getPoints() as $Point) {
|
||
|
|
$points[] = implode(' ', $Point->getRawArray());
|
||
|
|
}
|
||
|
|
$rings[] = '(' . implode(', ', $points) . ')';
|
||
|
|
}
|
||
|
|
$parts[] = '(' . implode(', ', $rings) . ')';
|
||
|
|
}
|
||
|
|
$ret .= '(' . implode(', ', $parts) . ')';
|
||
|
|
}
|
||
|
|
return $ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function getGeoJSON($flag_bbox = true, $flag_feature = false)
|
||
|
|
{
|
||
|
|
if ($this->isEmpty()) {
|
||
|
|
return 'null';
|
||
|
|
}
|
||
|
|
$coordinates = [];
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
$parts = [];
|
||
|
|
foreach ($Polygon->getLinestrings() as $Linestring) {
|
||
|
|
$rings = [];
|
||
|
|
foreach ($Linestring->getPoints() as $Point) {
|
||
|
|
$rings[] = $Point->getRawArray();
|
||
|
|
}
|
||
|
|
$parts[] = $rings;
|
||
|
|
}
|
||
|
|
$coordinates[] = $parts;
|
||
|
|
}
|
||
|
|
return $this->geojsonPackOutput($coordinates, $flag_bbox, $flag_feature);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds a polygon to the collection.
|
||
|
|
*
|
||
|
|
* @param \Shapefile\Geometry\Polygon $Polygon
|
||
|
|
*
|
||
|
|
* @return self Returns $this to provide a fluent interface.
|
||
|
|
*/
|
||
|
|
public function addPolygon(Polygon $Polygon)
|
||
|
|
{
|
||
|
|
$this->addGeometry($Polygon, true);
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets a polygon at specified index from the collection.
|
||
|
|
*
|
||
|
|
* @param int $index The index of the polygon.
|
||
|
|
*
|
||
|
|
* @return \Shapefile\Geometry\Polygon
|
||
|
|
*/
|
||
|
|
public function getPolygon($index)
|
||
|
|
{
|
||
|
|
return $this->getGeometry($index);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets all the polygons in the collection.
|
||
|
|
*
|
||
|
|
* @return \Shapefile\Geometry\Polygon[]
|
||
|
|
*/
|
||
|
|
public function getPolygons()
|
||
|
|
{
|
||
|
|
return $this->getGeometries();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of polygons in the collection.
|
||
|
|
*
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
public function getNumPolygons()
|
||
|
|
{
|
||
|
|
return $this->getNumGeometries();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Forces multipolygon rings to be closed.
|
||
|
|
*
|
||
|
|
* @return self Returns $this to provide a fluent interface.
|
||
|
|
*/
|
||
|
|
public function forceClosedRings()
|
||
|
|
{
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
$Polygon->forceClosedRings();
|
||
|
|
}
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks whether all multipolygon outer rings have a clockwise orientation and all the inner rings have a counterclockwise one.
|
||
|
|
* Note that a false return value does not guarantee multipolygon is strictly counterclockwise. Use MultiPolygon::forceCounterClockwise() to enforce that!
|
||
|
|
*
|
||
|
|
* Returns Shapefile::UNDEFINED if geometry is empty.
|
||
|
|
*
|
||
|
|
* @return bool|Shapefile::UNDEFINED
|
||
|
|
*/
|
||
|
|
public function isClockwise()
|
||
|
|
{
|
||
|
|
if ($this->isEmpty()) {
|
||
|
|
return Shapefile::UNDEFINED;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
if ($Polygon->getOuterRing()->isClockwise(true) === false) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
foreach ($Polygon->getInnerRings() as $Linestring) {
|
||
|
|
if ($Linestring->isClockwise(true) === true) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks whether all multipolygon outer rings have a counterclockwise orientation and all the inner rings have a clockwise one.
|
||
|
|
* Note that a false return value does not guarantee multipolygon is strictly clockwise. Use MultiPolygon::forceClockwise() to enforce that!
|
||
|
|
*
|
||
|
|
* Returns Shapefile::UNDEFINED if geometry is empty.
|
||
|
|
*
|
||
|
|
* @return bool|Shapefile::UNDEFINED
|
||
|
|
*/
|
||
|
|
public function isCounterClockwise()
|
||
|
|
{
|
||
|
|
if ($this->isEmpty()) {
|
||
|
|
return Shapefile::UNDEFINED;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
if ($Polygon->getOuterRing()->isClockwise(true) === true) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
foreach ($Polygon->getInnerRings() as $Linestring) {
|
||
|
|
if ($Linestring->isClockwise(true) === false) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Forces all multipolygon outer rings to have a clockwise orientation and all the inner rings to have a counterclockwise one.
|
||
|
|
*
|
||
|
|
* @return self Returns $this to provide a fluent interface.
|
||
|
|
*/
|
||
|
|
public function forceClockwise()
|
||
|
|
{
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
$Polygon->getOuterRing()->forceClockwise();
|
||
|
|
foreach ($Polygon->getInnerRings() as $Linestring) {
|
||
|
|
$Linestring->forceCounterClockwise();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Forces all multipolygon outer rings to have a counterclockwise orientation and all the inner rings to have a clockwise one.
|
||
|
|
*
|
||
|
|
* @return self Returns $this to provide a fluent interface.
|
||
|
|
*/
|
||
|
|
public function forceCounterClockwise()
|
||
|
|
{
|
||
|
|
foreach ($this->getPolygons() as $Polygon) {
|
||
|
|
$Polygon->getOuterRing()->forceCounterClockwise();
|
||
|
|
foreach ($Polygon->getInnerRings() as $Linestring) {
|
||
|
|
$Linestring->forceClockwise();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
public function getSHPBasetype()
|
||
|
|
{
|
||
|
|
return Shapefile::SHAPE_TYPE_POLYGON;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////// PROTECTED ///////////////////////////////
|
||
|
|
/**
|
||
|
|
* Enforces class-wide action and orientation for polygons rings.
|
||
|
|
*
|
||
|
|
* @param \Shapefile\Geometry\Geometry $Polygon
|
||
|
|
* @param bool $flag_rings_and_orientation Optionally enforce class action and orientation for rings.
|
||
|
|
*
|
||
|
|
* @return self Returns $this to provide a fluent interface.
|
||
|
|
*/
|
||
|
|
protected function addGeometry(Geometry $Polygon, $flag_rings_and_orientation = true)
|
||
|
|
{
|
||
|
|
parent::addGeometry($Polygon);
|
||
|
|
|
||
|
|
if ($flag_rings_and_orientation && ($this->closed_rings != Shapefile::ACTION_IGNORE || $this->force_orientation != Shapefile::ORIENTATION_UNCHANGED)) {
|
||
|
|
foreach ($Polygon->getRings() as $i => $Linestring) {
|
||
|
|
// Closed rings
|
||
|
|
if ($this->closed_rings == Shapefile::ACTION_FORCE) {
|
||
|
|
$Linestring->forceClosedRing();
|
||
|
|
} elseif ($this->closed_rings == Shapefile::ACTION_CHECK && !$Linestring->isClosedRing()) {
|
||
|
|
throw new ShapefileException(Shapefile::ERR_GEOM_POLYGON_OPEN_RING);
|
||
|
|
}
|
||
|
|
// Orientation
|
||
|
|
if ($this->force_orientation == Shapefile::ORIENTATION_CLOCKWISE) {
|
||
|
|
$Linestring->{($i == 0) ? 'forceClockwise' : 'forceCounterClockwise'}();
|
||
|
|
} elseif ($this->force_orientation == Shapefile::ORIENTATION_COUNTERCLOCKWISE) {
|
||
|
|
$Linestring->{($i == 0) ? 'forceCounterClockwise' : 'forceClockwise'}();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
protected function getWKTBasetype()
|
||
|
|
{
|
||
|
|
return static::WKT_BASETYPE;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected function getGeoJSONBasetype()
|
||
|
|
{
|
||
|
|
return static::GEOJSON_BASETYPE;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected function getCollectionClass()
|
||
|
|
{
|
||
|
|
return __NAMESPACE__ . '\\' . static::COLLECTION_CLASS;
|
||
|
|
}
|
||
|
|
}
|