73 lines
1.6 KiB
PHP
73 lines
1.6 KiB
PHP
<?php
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namespace App\Models;
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use GeoJson\Feature\Feature;
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use GeoJson\Feature\FeatureCollection;
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use GeoJson\Geometry\LineString;
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use GeoJson\Geometry\Point;
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/**
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* Return different points/features in GeoJSON format
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* https://tools.ietf.org/html/rfc7946
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*/
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class GeoJson
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{
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/**
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* @var int
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*/
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protected $counter;
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/**
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* @var array [lon, lat] pairs
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*/
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protected $line_coords = [];
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/**
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* @var Feature[]
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*/
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protected $point_coords = [];
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/**
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* @param $lat
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* @param $lon
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* @param array $attrs Attributes of the Feature
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*/
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public function addPoint($lat, $lon, array $attrs)
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{
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$point = [$lon, $lat];
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$this->line_coords[] = [$lon, $lat];
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if (array_key_exists('alt', $attrs)) {
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$point[] = $attrs['alt'];
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}
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$this->point_coords[] = new Feature(new Point($point), $attrs);
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$this->counter++;
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}
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/**
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* Get the FeatureCollection for the line
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*
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* @return FeatureCollection
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*/
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public function getLine(): FeatureCollection
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{
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if (empty($this->line_coords) || \count($this->line_coords) < 2) {
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return new FeatureCollection([]);
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}
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return new FeatureCollection([
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new Feature(new LineString($this->line_coords)),
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]);
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}
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/**
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* Get the feature collection of all the points
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*
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* @return FeatureCollection
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*/
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public function getPoints(): FeatureCollection
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{
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return new FeatureCollection($this->point_coords);
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}
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}
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