包简介

PHP Geometry library provides utility functions for the computation of geometric data on the surface of the Earth.

README 文档

README

PHP Geometry Library provides utility functions for the computation of geometric data on the surface of the Earth. Code ported from Google Maps Android API.

Features

Spherical contains spherical geometry utilities allowing you to compute angles, distances and areas from latitudes and longitudes.
Poly utility functions for computations involving polygons and polylines.
Encoding utilities for polyline encoding and decoding.

Dependency

PHP 5

Installation

Issue following command:

composer require alexpechkarev/geometry-library:1.0.5

Alternatively edit composer.json by adding following line and run composer update

"require": { 
		....,
		"alexpechkarev/geometry-library":"1.0.5",
	
	},

Usage

Here is an example of using GeometryLibrary:

$response =  \GeometryLibrary\SphericalUtil::computeHeading(
                ['lat' => 25.775, 'lng' => -80.190], // from array [lat, lng]
                ['lat' => 21.774, 'lng' => -80.190]); // to array [lat, lng]
  echo $response; // -180
  
$response = \GeometryLibrary\SphericalUtil::computeDistanceBetween(
              ['lat' => 25.775, 'lng' => -80.190], //from array [lat, lng]
              ['lat' => 21.774, 'lng' => -80.190]); // to array [lat, lng]
              
  echo $response; // 444891.52998049          
  
  
$response =  \GeometryLibrary\PolyUtil::isLocationOnEdge(
              ['lat' => 25.774, 'lng' => -80.190], // point array [lat, lng]
              [ // poligon arrays of [lat, lng]
                ['lat' => 25.774, 'lng' => -80.190], 
                ['lat' => 18.466, 'lng' => -66.118], 
                ['lat' => 32.321, 'lng' => -64.757]
              ])  ;
              
  echo $response; // true
  
  
  
$response =  \GeometryLibrary\PolyUtil::isLocationOnPath(
              ['lat' => 25.771, 'lng' => -80.190], // point array [lat, lng]
             [ // poligon arrays of [lat, lng]
              ['lat' => 25.774, 'lng' => -80.190], 
              ['lat' => 18.466, 'lng' => -66.118], 
              ['lat' => 32.321, 'lng' => -64.757]
             ]);  
             
  echo $response; // false  
  
$response =  \GeometryLibrary\PolyUtil::containsLocation(
              ['lat' => 23.886, 'lng' => -65.269], // point array [lat, lng]
             [ // poligon arrays of [lat, lng]
                ['lat' => 25.774, 'lng' => -80.190], 
                ['lat' => 18.466, 'lng' => -66.118], 
                ['lat' => 32.321, 'lng' => -64.757]
             ]);  
             
  echo $response; // false    
  
$response =  \GeometryLibrary\PolyUtil::distanceToLine(
              ['lat' => 61.387002, 'lng' => 23.890636], // point array [lat, lng]
              ['lat' => 61.487002, 'lng' => 23.790636], // line startpoint array [lat, lng]
              ['lat' => 60.48047, 'lng' => 22.052754] // line endpoint array [lat, lng]
             );  
             
  echo $response; // 12325.124046196 in meters
  
$response =  \GeometryLibrary\PolyUtil::encode(
              [ 
                ['lat' => 38.5, 'lng' => -120.2], 
                ['lat' => 40.7, 'lng' => -120.95], 
                ['lat' => 43.252, 'lng' => -126.453]
              ]);
              
  echo $response; // '_p~iF~ps|U_ulLnnqC_mqNvxq`@'
  
  
$response =  \GeometryLibrary\PolyUtil::decode('_p~iF~ps|U_ulLnnqC_mqNvxq`@');  

  echo $response; /** array (size=3)
                        0 => 
                          array (size=2)
                            'lat' => float 38.5
                            'lng' => float -120.2
                        1 => 
                          array (size=2)
                            'lat' => float 40.7
                            'lng' => float -120.95
                        2 => 
                          array (size=2)
                            'lat' => float 43.252
                            'lng' => float -126.453
                   */

Available methods

PolyUtil class

containsLocation($point, $polygon, $geodesic = false)
isLocationOnEdge($point, $polygon, $tolerance = self::DEFAULT_TOLERANCE, $geodesic = true)
isLocationOnPath($point, $polyline, $tolerance = self::DEFAULT_TOLERANCE, $geodesic = true)
distanceToLine($p, $start, $end)
decode($encodedPath)
encode($path)

SphericalUtil class

computeHeading($from, $to)
computeOffset($from, $distance, $heading)
computeOffsetOrigin($to, $distance, $heading)
interpolate($from, $to, $fraction)
computeDistanceBetween( $from, $to)
computeLength($path)
computeArea($path)
computeSignedArea($path)

containsLocation( $point, $polygon, $geodesic = false ) - To find whether a given point falls within a polygon

$point - ['lat' => 38.5, 'lng' => -120.2 ]
$polygon - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453]]
$geodesic - boolean

Returns boolean

$response =  \GeometryLibrary\PolyUtil::containsLocation(
              ['lat' => 23.886, 'lng' => -65.269], // point array [lat, lng]
             [ // poligon arrays of [lat, lng]
                ['lat' => 25.774, 'lng' => -80.190], 
                ['lat' => 18.466, 'lng' => -66.118], 
                ['lat' => 32.321, 'lng' => -64.757]
             ]);  
             
  echo $response; // false

isLocationOnEdge( $point, $polygon, $tolerance = self::DEFAULT_TOLERANCE, $geodesic = true ) - To determine whether a point falls on or near a polyline, or on or near the edge of a polygon, within a specified tolerance in meters.

$point - ['lat' => 25.774, 'lng' => -80.190 ]
$polygon - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453]]
$tolerance - tolerance value in degrees
$geodesic - boolean

Returns boolean

$response =  \GeometryLibrary\PolyUtil::isLocationOnEdge(
              ['lat' => 25.774, 'lng' => -80.190], // point array [lat, lng]
              [ // poligon arrays of [lat, lng]
                ['lat' => 25.774, 'lng' => -80.190], 
                ['lat' => 18.466, 'lng' => -66.118], 
                ['lat' => 32.321, 'lng' => -64.757]
              ])  ;
              
  echo $response; // true

isLocationOnPath( $point, $polygon, $tolerance = self::DEFAULT_TOLERANCE, $geodesic = true ) - To determine whether a point falls on or near a polyline, within a specified tolerance in meters

$point - ['lat' => 25.774, 'lng' => -80.190 ]
$polygon - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453]]
$tolerance - tolerance value in degrees
$geodesic - boolean

Returns boolean

$response =  \GeometryLibrary\PolyUtil::isLocationOnPath(
              ['lat' => 25.774, 'lng' => -80.190], // point array [lat, lng]
              [ // poligon arrays of [lat, lng]
                ['lat' => 25.774, 'lng' => -80.190], 
                ['lat' => 18.466, 'lng' => -66.118], 
                ['lat' => 32.321, 'lng' => -64.757]
              ])  ;
              
  echo $response; // true

distanceToLine( $p, $start, $end ) - To calculate distance from a point to line start->end on sphere.

$p - ['lat' => 61.387002, 'lng' => 23.890636]
$start - ['lat' => 61.487002, 'lng' => 23.790636]
$end - ['lat' => 60.48047, 'lng' => 22.052754]

Returns distance from a point to line

$response =  \GeometryLibrary\PolyUtil::distanceToLine(
              ['lat' => 61.387002, 'lng' => 23.890636], // point array [lat, lng]
              ['lat' => 61.487002, 'lng' => 23.790636], // line startpoint array [lat, lng]
              ['lat' => 60.48047, 'lng' => 22.052754] // line endpoint array [lat, lng]
             );  
             
  echo $response; // 12325.124046196 in meters

decode( $encodedPath ) - Decodes an encoded path string into a sequence of LatLngs.

$encodedPath - string '_piFps|U_ulLnnqC_mqNvxq`@'

Returns array

$response =  \GeometryLibrary\PolyUtil::decode('_p~iF~ps|U_ulLnnqC_mqNvxq`@');  

  echo $response; /** array (size=3)
                        0 => 
                          array (size=2)
                            'lat' => float 38.5
                            'lng' => float -120.2
                        1 => 
                          array (size=2)
                            'lat' => float 40.7
                            'lng' => float -120.95
                        2 => 
                          array (size=2)
                            'lat' => float 43.252
                            'lng' => float -126.453
                   */

encode( $path ) - Encodes a sequence of LatLngs into an encoded path string.

$path - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453] ]

Returns string

$response =  \GeometryLibrary\PolyUtil::encode(
              [ 
                ['lat' => 38.5, 'lng' => -120.2], 
                ['lat' => 40.7, 'lng' => -120.95], 
                ['lat' => 43.252, 'lng' => -126.453]
              ]);
              
  echo $response; // '_p~iF~ps|U_ulLnnqC_mqNvxq`@'

computeHeading( $from, $to ) - Returns the heading from one LatLng to another LatLng.

$from - ['lat' => 38.5, 'lng' => -120.2]
$to - ['lat' => 40.7, 'lng' => -120.95]

Returns int

$response =  \GeometryLibrary\SphericalUtil::computeHeading(
              ['lat' => 25.775, 'lng' => -80.190], 
              ['lat' => 21.774, 'lng' => -80.190]));
              
  echo $response; // -180

computeOffset( $from, $distance, $heading ) - Returns the LatLng resulting from moving a distance from an origin in the specified heading.

$from - ['lat' => 38.5, 'lng' => -120.2]
$distance - number, the distance to travel
$heading - number, the heading in degrees clockwise from north

Returns array

$response =  \GeometryLibrary\SphericalUtil::computeOffset(['lat' => 25.775, 'lng' => -80.190], 152, 120);
              
  echo $response; /** array (size=2)
                      'lat' => float 25.774316510639
                      'lng' => float -80.188685385944
                  */

computeOffsetOrigin( $from, $distance, $heading ) - Returns the location of origin when provided with a LatLng destination, meters travelled and original heading. Headings are expressed in degrees clockwise from North.

$from - ['lat' => 38.5, 'lng' => -120.2]
$distance - number, the distance to travel
$heading - number, the heading in degrees clockwise from north

Returns array

$response =  \GeometryLibrary\SphericalUtil::computeOffsetOrigin(['lat' => 25.775, 'lng' => -80.190], 152, 120);
              
  echo $response; /** array (size=2)
                        'lat' => float 14.33435503928
                        'lng' => float -263248.24242931
                  */

interpolate( $from, $to, $fraction ) - Returns the LatLng which lies the given fraction of the way between the origin LatLng and the destination LatLng.

$from - ['lat' => 38.5, 'lng' => -120.2]
$to - ['lat' => 38.5, 'lng' => -120.2]
$fraction - number, a fraction of the distance to travel

Returns array

$response =  \GeometryLibrary\SphericalUtil::interpolate(['lat' => 25.775, 'lng' => -80.190], 
                                                          ['lat' => 26.215, 'lng' => -81.218], 2);
              
  echo $response; /** array (size=2)
                      'lat' => float 26.647635362403
                      'lng' => float -82.253737943391
                  */

computeDistanceBetween( $from, $to ) - Returns the distance, in meters, between two LatLngs. You can optionally specify a custom radius. The radius defaults to the radius of the Earth.

$from - ['lat' => 38.5, 'lng' => -120.2]
$to - ['lat' => 38.5, 'lng' => -120.2]

Returns float

$response =  \GeometryLibrary\SphericalUtil::computeDistanceBetween(['lat' => 25.775, 'lng' => -80.190], ['lat' => 26.215, 'lng' => -81.218]);
              
  echo $response; //float 113797.92421349

computeLength( $path ) - Returns the length of the given path, in meters, on Earth.

$path - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453] ]

Returns float

$response =  \GeometryLibrary\SphericalUtil::computeLength([ 
                ['lat' => 38.5, 'lng' => -120.2], 
                ['lat' => 40.7, 'lng' => -120.95], 
                ['lat' => 43.252, 'lng' => -126.453]
              ]);
              
  echo $response; //float 788906.98459431

computeArea( $path ) - Returns the area of a closed path.

$path - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453] ]

Returns float

$response =  \GeometryLibrary\SphericalUtil::computeArea([ 
                ['lat' => 38.5, 'lng' => -120.2], 
                ['lat' => 40.7, 'lng' => -120.95], 
                ['lat' => 43.252, 'lng' => -126.453]
              ]);
              
  echo $response; //float 44766785529.143

computeSignedArea( $path ) - Returns the signed area of a closed path.

$path - [ ['lat' => 38.5, 'lng' => -120.2], ['lat' => 40.7, 'lng' => -120.95], ['lat' => 43.252, 'lng' => -126.453] ]

Returns float

$response =  \GeometryLibrary\SphericalUtil::computeSignedArea([ 
                ['lat' => 38.5, 'lng' => -120.2], 
                ['lat' => 40.7, 'lng' => -120.95], 
                ['lat' => 43.252, 'lng' => -126.453]
              ]);
              
  echo $response; //float 44766785529.143

Support

Please open an issue on GitHub

License

Geometry Library Google Maps API V3 is released under the MIT License. See the bundled LICENSE file for details.

alexpechkarev/geometry-library 适用场景与选型建议

alexpechkarev/geometry-library 是一款基于 PHP 开发的 Composer 扩展包，目前已累计 4.01M 次下载、GitHub Stars 达 139，最近一次更新时间为 2015 年 09 月 11 日，在 PHP 生态内属于活跃度较高的组件。

它主要适用于以下技术方向：「google maps geometry library」「php geometry library」「spherical geometry utilities」「encoding and decoding polyline paths utilities」「computations polygons and polylines」等业务场景。在实际项目中，围绕这些方向常见需要落地的问题包括：接口对接、性能调优、并发安全、与既有框架（Laravel / ThinkPHP / Yii / Webman 等）的兼容适配，以及生产环境的日志埋点与稳定性保障。

我们在过去多个企业项目中使用过 alexpechkarev/geometry-library 或与其功能相近的方案，如果你在选型或落地过程中遇到问题，例如 版本兼容、二次改造、私有化封装、与内部系统对接、生产 BUG 排查，欢迎联系我们协助评估。

围绕 alexpechkarev/geometry-library 我们能提供哪些服务？

定制开发 / 二次开发

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BUG 修复 & 性能优化

线上偶发问题、内存泄漏、慢查询、并发异常等排查修复；针对高流量场景做缓存、队列、索引层面的调优。

项目外包 & 长期维护

承接完整的项目从需求 → 设计 → 开发 → 上线 → 长期运维；也可按月提供技术保姆服务。

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alexpechkarev/geometry-library

包简介

关键字：

README 文档

README

Features

Dependency

Installation

Usage

Available methods

PolyUtil class

SphericalUtil class

Support

License

alexpechkarev/geometry-library 适用场景与选型建议

与 alexpechkarev/geometry-library 相关的其它包

统计信息

GitHub 信息

其他信息